I have several EPROMs from the 1980s that I would like to copy so that
I will have backups. I see all sorts of readers/programmers online and
on eBay but I don't know what to avoid or buy. I have EPROMs that I
can practice with. They are good as far as I know but the info in them
is for a different machine. So I was thinking I could copy one, then
program a new one with the copied data, and then compare the two to
make sure all the data was copied correctly. I am assuming that the
software I use to copy and write will also have the ability to compare
the two devices. I may be wrong. In about a month the machine I am
most worried about will be free for long enough for me to do the
copying process. I do know how to handle the boards properly to avoid
static and other damage and I do have a nice tool made for removing
and inserting the devices. Any advice or suggestions?
Thanks,
Eric

On 2017/11/30 9:33 AM, wrote:
I have several EPROMs from the 1980s that I would like to copy so that
I will have backups. I see all sorts of readers/programmers online and
on eBay but I don't know what to avoid or buy. I have EPROMs that I
can practice with. They are good as far as I know but the info in them
is for a different machine. So I was thinking I could copy one, then
program a new one with the copied data, and then compare the two to
make sure all the data was copied correctly. I am assuming that the
software I use to copy and write will also have the ability to compare
the two devices. I may be wrong. In about a month the machine I am
most worried about will be free for long enough for me to do the
copying process. I do know how to handle the boards properly to avoid
static and other damage and I do have a nice tool made for removing
and inserting the devices. Any advice or suggestions?
Thanks,
Eric


Hi Eric,

It all depends on the chip. For example - 2716s - most Eprom programmers
can still read those, however if you have 2532s that is harder to find a
reader for. 2732s, 2764s, and later almost any inexpensive device (Wilem
for example) will read those.

If you have 2708s then you will have to buy a legacy Eprom programmer to
read those unless you are adept at making interface modules - you have
to provide +12 and -5 for 2708s. Earlier still devices, and PROMs again
need more specialized reader/programmers.

Most of the 70s games are archived and not too hard to find via MAME.
Which games are you trying to back up?

Or you can talk to someone like my shop where we can read and program
devices right back to 1702As so we could read your chips and give you a
copy of the archive. Not free I'm afraid! Cost depends on the device read.

John :-#)#

--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

On 30.11.2017 18:33, wrote:
I have several EPROMs from the 1980s that I would like to copy so
that I will have backups. I see all sorts of readers/programmers
online and on eBay but I don't know what to avoid or buy. I have
EPROMs that I can practice with. They are good as far as I know but
the info in them is for a different machine. So I was thinking I
could copy one, then program a new one with the copied data, and
then compare the two to make sure all the data was copied correctly.
I am assuming that the software I use to copy and write will also
have the ability to compare the two devices. I may be wrong. In about
a month the machine I am most worried about will be free for long
enough for me to do the copying process. I do know how to handle the
boards properly to avoid static and other damage and I do have a nice
tool made for removing and inserting the devices. Any advice or
suggestions? Thanks, Eric

As John said already, the most important part is the device support.
Manufacturers of various EPROM programmers will typically publish long
lists of devices that their programmer is designed to support. First
make sure that the devices (EPROMs) you need to read are supported by
the programmer you intend to buy. Often commonly available "popular"
devices were made by multiple manufacturers and were known by various
similar names, so when looking up device types in a list, it may make
sense to look up the other known compatible type names too. However
beware that there are some devices by certain manufacturers that are
known to be "quirky" and that some theoretically "compatible" devices
need not always be fully compatible. In the most cases a "compatible"
device will at least be compatible enough to read identically, but when
it comes to programming them, beware - there be dragons in the details.

As for any particular programmer, I can't really recommend much due to
the lack of experience. I've used a MiniPro TL866A in the recent past
and found it to be built and working reasonably well. However, I only
had recently made serial EEPROMs and Flash-PROMs to program, nothing
from before the 2000s, let alone 1980s, so no experience with them.
Anyway, here is the device support list of the MiniPro TL866A:

http://www.autoelectric.cn/minipro/M...upportList.txt

Note that some of these devices are micro controllers (AVR, PIC) with
serial interfaces, for these the TL866A (but not the similar TL866CS)
has an in-circuit serial programming interface available via a second
port. Apart for it (the ICSP) these 2 programmers operate identically.

Dimitrij

On 11/30/2017 9:33 AM, wrote:
I have several EPROMs from the 1980s that I would like to copy so that
I will have backups. I see all sorts of readers/programmers online and
on eBay but I don't know what to avoid or buy. I have EPROMs that I
can practice with. They are good as far as I know but the info in them
is for a different machine. So I was thinking I could copy one, then
program a new one with the copied data, and then compare the two to
make sure all the data was copied correctly. I am assuming that the
software I use to copy and write will also have the ability to compare
the two devices. I may be wrong. In about a month the machine I am
most worried about will be free for long enough for me to do the
copying process. I do know how to handle the boards properly to avoid
static and other damage and I do have a nice tool made for removing
and inserting the devices. Any advice or suggestions?
Thanks,
Eric

Rule number one...if it ain't broke, don't fix it.
Yeah, right...

It's critically dependent on the EXACT devices you're trying
to program.

If you can read the prom, you can save the data without burning
a new one.

But, it's always good to fully test the process so you will know
it works when you need it.

A prom that verifies in the programmer may not work in the target system
at speed.

Compaq made a laptop in the 90's that had a flash bios.
It would randomly quit booting. If you read the eprom slowly
in the programmer and reprogrammed the same eprom with the same
data you'd just read from it it would work again...until the next time
it broke.
Using a new eprom didn't help. They had left the program enable line
floating when not in use and it would slowly degrade the bits.
The lesson here is that a prom that verifies in the programmer does
not guarantee a working system.

I'm a big fan of rule number one.

On Thu, 30 Nov 2017 11:56:10 -0800, John Robertson
wrote:

On 2017/11/30 9:33 AM, wrote:
I have several EPROMs from the 1980s that I would like to copy so that
I will have backups. I see all sorts of readers/programmers online and
on eBay but I don't know what to avoid or buy. I have EPROMs that I
can practice with. They are good as far as I know but the info in them
is for a different machine. So I was thinking I could copy one, then
program a new one with the copied data, and then compare the two to
make sure all the data was copied correctly. I am assuming that the
software I use to copy and write will also have the ability to compare
the two devices. I may be wrong. In about a month the machine I am
most worried about will be free for long enough for me to do the
copying process. I do know how to handle the boards properly to avoid
static and other damage and I do have a nice tool made for removing
and inserting the devices. Any advice or suggestions?
Thanks,
Eric


Hi Eric,

It all depends on the chip. For example - 2716s - most Eprom programmers
can still read those, however if you have 2532s that is harder to find a
reader for. 2732s, 2764s, and later almost any inexpensive device (Wilem
for example) will read those.

If you have 2708s then you will have to buy a legacy Eprom programmer to
read those unless you are adept at making interface modules - you have
to provide +12 and -5 for 2708s. Earlier still devices, and PROMs again
need more specialized reader/programmers.

Most of the 70s games are archived and not too hard to find via MAME.
Which games are you trying to back up?

Or you can talk to someone like my shop where we can read and program
devices right back to 1702As so we could read your chips and give you a
copy of the archive. Not free I'm afraid! Cost depends on the device read.

John :-#)#
The machine in question is a CNC lathe with a Fanuc control. Neither
Fanuc or Miyano, the lathe manufacturer, have any more EPROMs.
Eric

On Thu, 30 Nov 2017 13:26:14 -0800, mike wrote:

On 11/30/2017 9:33 AM, wrote:
I have several EPROMs from the 1980s that I would like to copy so that
I will have backups. I see all sorts of readers/programmers online and
on eBay but I don't know what to avoid or buy. I have EPROMs that I
can practice with. They are good as far as I know but the info in them
is for a different machine. So I was thinking I could copy one, then
program a new one with the copied data, and then compare the two to
make sure all the data was copied correctly. I am assuming that the
software I use to copy and write will also have the ability to compare
the two devices. I may be wrong. In about a month the machine I am
most worried about will be free for long enough for me to do the
copying process. I do know how to handle the boards properly to avoid
static and other damage and I do have a nice tool made for removing
and inserting the devices. Any advice or suggestions?
Thanks,
Eric

Rule number one...if it ain't broke, don't fix it.
Yeah, right...

It's critically dependent on the EXACT devices you're trying
to program.

If you can read the prom, you can save the data without burning
a new one.

But, it's always good to fully test the process so you will know
it works when you need it.

A prom that verifies in the programmer may not work in the target system
at speed.

Compaq made a laptop in the 90's that had a flash bios.
It would randomly quit booting. If you read the eprom slowly
in the programmer and reprogrammed the same eprom with the same
data you'd just read from it it would work again...until the next time
it broke.
Using a new eprom didn't help. They had left the program enable line
floating when not in use and it would slowly degrade the bits.
The lesson here is that a prom that verifies in the programmer does
not guarantee a working system.

I'm a big fan of rule number one.
The problem is that if it does break it will be hard to find
replacements. I wanna be pro-active and have spares.
Eric

On 2017/11/30 3:09 PM, wrote:
On Thu, 30 Nov 2017 11:56:10 -0800, John Robertson
wrote:

On 2017/11/30 9:33 AM, wrote:
I have several EPROMs from the 1980s that I would like to copy so that
I will have backups. I see all sorts of readers/programmers online and
on eBay but I don't know what to avoid or buy. I have EPROMs that I
can practice with. They are good as far as I know but the info in them
is for a different machine. So I was thinking I could copy one, then
program a new one with the copied data, and then compare the two to
make sure all the data was copied correctly. I am assuming that the
software I use to copy and write will also have the ability to compare
the two devices. I may be wrong. In about a month the machine I am
most worried about will be free for long enough for me to do the
copying process. I do know how to handle the boards properly to avoid
static and other damage and I do have a nice tool made for removing
and inserting the devices. Any advice or suggestions?
Thanks,
Eric


Hi Eric,

It all depends on the chip. For example - 2716s - most Eprom programmers
can still read those, however if you have 2532s that is harder to find a
reader for. 2732s, 2764s, and later almost any inexpensive device (Wilem
for example) will read those.

If you have 2708s then you will have to buy a legacy Eprom programmer to
read those unless you are adept at making interface modules - you have
to provide +12 and -5 for 2708s. Earlier still devices, and PROMs again
need more specialized reader/programmers.

Most of the 70s games are archived and not too hard to find via MAME.
Which games are you trying to back up?

Or you can talk to someone like my shop where we can read and program
devices right back to 1702As so we could read your chips and give you a
copy of the archive. Not free I'm afraid! Cost depends on the device read.

John :-#)#
The machine in question is a CNC lathe with a Fanuc control. Neither
Fanuc or Miyano, the lathe manufacturer, have any more EPROMs.
Eric


So, what are the part numbers of the EPROMs? Chances are it is fairly
modern, and indeed you want to archive those!

I'd archive them for you if you want to make me a small injection mold
or two (ducking).

John :-#)#

--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

On 2017/11/30 3:12 PM, John Robertson wrote:
On 2017/11/30 3:09 PM, wrote:
On Thu, 30 Nov 2017 11:56:10 -0800, John Robertson
wrote:

On 2017/11/30 9:33 AM, wrote:
I have several EPROMs from the 1980s that I would like to copy so that
I will have backups. I see all sorts of readers/programmers online and
on eBay but I don't know what to avoid or buy. I have EPROMs that I
can practice with. They are good as far as I know but the info in them
is for a different machine. So I was thinking I could copy one, then
program a new one with the copied data, and then compare the two to
make sure all the data was copied correctly. I am assuming that the
software I use to copy and write will also have the ability to compare
the two devices. I may be wrong. In about a month the machine I am
most worried about will be free for long enough for me to do the
copying process. I do know how to handle the boards properly to avoid
static and other damage and I do have a nice tool made for removing
and inserting the devices.Â* Any advice or suggestions?
Thanks,
Eric


Hi Eric,

It all depends on the chip. For example - 2716s - most Eprom programmers
can still read those, however if you have 2532s that is harder to find a
reader for. 2732s, 2764s, and later almost any inexpensive device (Wilem
for example) will read those.

If you have 2708s then you will have to buy a legacy Eprom programmer to
read those unless you are adept at making interface modules - you have
to provide +12 and -5 for 2708s. Earlier still devices, and PROMs again
need more specialized reader/programmers.

Most of the 70s games are archived and not too hard to find via MAME.
Which games are you trying to back up?

Or you can talk to someone like my shop where we can read and program
devices right back to 1702As so we could read your chips and give you a
copy of the archive. Not free I'm afraid! Cost depends on the device
read.

John :-#)#
The machine in question is a CNC lathe with a Fanuc control. Neither
Fanuc or Miyano, the lathe manufacturer, have any more EPROMs.
Eric


So, what are the part numbers of the EPROMs? Chances are it is fairly
modern, and indeed you want to archive those!

I'd archive them for you if you want to make me a small injection mold
or two (ducking).

John :-#)#


Charge retention was estimated to be over 50 years back in the early 80s
(see link article), but you are well over halfway through that period
and it certainly is a good idea to archive them!

http://ieeexplore.ieee.org/iel6/8298/25930/01156517.pdf

John :-#)#

--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

On Thu, 30 Nov 2017 15:12:01 -0800, John Robertson
wrote:

On 2017/11/30 3:09 PM, wrote:
On Thu, 30 Nov 2017 11:56:10 -0800, John Robertson
wrote:

On 2017/11/30 9:33 AM, wrote:
I have several EPROMs from the 1980s that I would like to copy so that
I will have backups. I see all sorts of readers/programmers online and
on eBay but I don't know what to avoid or buy. I have EPROMs that I
can practice with. They are good as far as I know but the info in them
is for a different machine. So I was thinking I could copy one, then
program a new one with the copied data, and then compare the two to
make sure all the data was copied correctly. I am assuming that the
software I use to copy and write will also have the ability to compare
the two devices. I may be wrong. In about a month the machine I am
most worried about will be free for long enough for me to do the
copying process. I do know how to handle the boards properly to avoid
static and other damage and I do have a nice tool made for removing
and inserting the devices. Any advice or suggestions?
Thanks,
Eric


Hi Eric,

It all depends on the chip. For example - 2716s - most Eprom programmers
can still read those, however if you have 2532s that is harder to find a
reader for. 2732s, 2764s, and later almost any inexpensive device (Wilem
for example) will read those.

If you have 2708s then you will have to buy a legacy Eprom programmer to
read those unless you are adept at making interface modules - you have
to provide +12 and -5 for 2708s. Earlier still devices, and PROMs again
need more specialized reader/programmers.

Most of the 70s games are archived and not too hard to find via MAME.
Which games are you trying to back up?

Or you can talk to someone like my shop where we can read and program
devices right back to 1702As so we could read your chips and give you a
copy of the archive. Not free I'm afraid! Cost depends on the device read.

John :-#)#
The machine in question is a CNC lathe with a Fanuc control. Neither
Fanuc or Miyano, the lathe manufacturer, have any more EPROMs.
Eric


So, what are the part numbers of the EPROMs? Chances are it is fairly
modern, and indeed you want to archive those!

I'd archive them for you if you want to make me a small injection mold
or two (ducking).

John :-#)#
Greetings John,
I'll get part numbers tomorrow and post them. All the EPROMs in my
Fanuc controls are, I think, the same part.
After I read the EPROMs I would also like to look at what is
written in them. In particular some of them have ladders. I spoke with
Miyano, who wrote the ladders for the lathe, and they don't have any
records of what was written. But I'm not sure if I am going to need
special software to make sense of what was written.
I want to do this because the Miyano lathe didn't come with a rapid
override switch or a spindle override switch. Or even a spindle stop
switch that works when the lathe is running a program. These features
are all options for the control and the machine tool maker decides
which ones to use.
The machine moves very fast in rapid, has a 15 hp spindle, and
crashes are nerve wracking. This machine is the only CNC machine I
have seen that does not have a rapid override. Setups with a new
program always make me nervous.

Thanks,
Eric

On 2017/11/30 6:29 PM, wrote:
On Thu, 30 Nov 2017 15:12:01 -0800, John Robertson
wrote:

On 2017/11/30 3:09 PM, wrote:
On Thu, 30 Nov 2017 11:56:10 -0800, John Robertson
wrote:

On 2017/11/30 9:33 AM, wrote:
I have several EPROMs from the 1980s that I would like to copy so that
I will have backups. I see all sorts of readers/programmers online and
on eBay but I don't know what to avoid or buy. I have EPROMs that I
can practice with. They are good as far as I know but the info in them
is for a different machine. So I was thinking I could copy one, then
program a new one with the copied data, and then compare the two to
make sure all the data was copied correctly. I am assuming that the
software I use to copy and write will also have the ability to compare
the two devices. I may be wrong. In about a month the machine I am
most worried about will be free for long enough for me to do the
copying process. I do know how to handle the boards properly to avoid
static and other damage and I do have a nice tool made for removing
and inserting the devices. Any advice or suggestions?
Thanks,
Eric


Hi Eric,

It all depends on the chip. For example - 2716s - most Eprom programmers
can still read those, however if you have 2532s that is harder to find a
reader for. 2732s, 2764s, and later almost any inexpensive device (Wilem
for example) will read those.

If you have 2708s then you will have to buy a legacy Eprom programmer to
read those unless you are adept at making interface modules - you have
to provide +12 and -5 for 2708s. Earlier still devices, and PROMs again
need more specialized reader/programmers.

Most of the 70s games are archived and not too hard to find via MAME.
Which games are you trying to back up?

Or you can talk to someone like my shop where we can read and program
devices right back to 1702As so we could read your chips and give you a
copy of the archive. Not free I'm afraid! Cost depends on the device read.

John :-#)#
The machine in question is a CNC lathe with a Fanuc control. Neither
Fanuc or Miyano, the lathe manufacturer, have any more EPROMs.
Eric


So, what are the part numbers of the EPROMs? Chances are it is fairly
modern, and indeed you want to archive those!

I'd archive them for you if you want to make me a small injection mold
or two (ducking).

John :-#)#
Greetings John,
I'll get part numbers tomorrow and post them. All the EPROMs in my
Fanuc controls are, I think, the same part.
After I read the EPROMs I would also like to look at what is
written in them. In particular some of them have ladders. I spoke with
Miyano, who wrote the ladders for the lathe, and they don't have any
records of what was written. But I'm not sure if I am going to need
special software to make sense of what was written.
I want to do this because the Miyano lathe didn't come with a rapid
override switch or a spindle override switch. Or even a spindle stop
switch that works when the lathe is running a program. These features
are all options for the control and the machine tool maker decides
which ones to use.
The machine moves very fast in rapid, has a 15 hp spindle, and
crashes are nerve wracking. This machine is the only CNC machine I
have seen that does not have a rapid override. Setups with a new
program always make me nervous.

Thanks,
Eric


So, the EPROMs hold lookup tables, that are like the old automated looms
shown a long time ago on the Connections (BBC) series?

https://www.youtube.com/watch?v=itd-4lMoXgI

Some of the EPROMs will be operating code, others may be your ladders.
Would need to know the CPU these run under - probably 8-bit like 6502 or
Z80 if early 80s.

Sounds a bit fun.

A couple of fellows I knew back in the 80s and 90s had some rather large
CNC lathes, and mill machines that ran on paper tape. I tried to help
them keep them running but in the end I just didn't know enough (and
this was prior to 1995 - the internet could have saved them) to keep
them going and they shut the shop down as they could not afford newer
equipment. Always felt sad about that. However Honeywell offered zero
support (other than schematics) and they could not find anyone else
remotely interested in trying to help. Nice guys too.

Things were different pre-1995!

John :-#(#

On 11/30/2017 3:10 PM, wrote:

I'm a big fan of rule number one.
The problem is that if it does break it will be hard to find
replacements. I wanna be pro-active and have spares.
Eric

I understand the desire.
I can't count the number of times I started with one good gizmo
and one bad gizmo and ended up with two bad gizmos. Was not the
desired result.
Good luck.

Some companies make copies from a samplefor some "cents".


a écrit :
I have several EPROMs from the 1980s that I would like to copy so that
I will have backups. I see all sorts of readers/programmers online and
on eBay but I don't know what to avoid or buy. I have EPROMs that I
can practice with. They are good as far as I know but the info in them
is for a different machine. So I was thinking I could copy one, then
program a new one with the copied data, and then compare the two to
make sure all the data was copied correctly. I am assuming that the
software I use to copy and write will also have the ability to compare
the two devices. I may be wrong. In about a month the machine I am
most worried about will be free for long enough for me to do the
copying process. I do know how to handle the boards properly to avoid
static and other damage and I do have a nice tool made for removing
and inserting the devices. Any advice or suggestions?
Thanks,
Eric

On 11/30/2017 09:29 PM, wrote:
On Thu, 30 Nov 2017 15:12:01 -0800, John Robertson
wrote:

On 2017/11/30 3:09 PM, wrote:
On Thu, 30 Nov 2017 11:56:10 -0800, John Robertson
wrote:

On 2017/11/30 9:33 AM, wrote:
I have several EPROMs from the 1980s that I would like to copy so that
I will have backups. I see all sorts of readers/programmers online and
on eBay but I don't know what to avoid or buy. I have EPROMs that I
can practice with. They are good as far as I know but the info in them
is for a different machine. So I was thinking I could copy one, then
program a new one with the copied data, and then compare the two to
make sure all the data was copied correctly. I am assuming that the
software I use to copy and write will also have the ability to compare
the two devices. I may be wrong. In about a month the machine I am
most worried about will be free for long enough for me to do the
copying process. I do know how to handle the boards properly to avoid
static and other damage and I do have a nice tool made for removing
and inserting the devices. Any advice or suggestions?
Thanks,
Eric


Hi Eric,

It all depends on the chip. For example - 2716s - most Eprom programmers
can still read those, however if you have 2532s that is harder to find a
reader for. 2732s, 2764s, and later almost any inexpensive device (Wilem
for example) will read those.

If you have 2708s then you will have to buy a legacy Eprom programmer to
read those unless you are adept at making interface modules - you have
to provide +12 and -5 for 2708s. Earlier still devices, and PROMs again
need more specialized reader/programmers.

Most of the 70s games are archived and not too hard to find via MAME.
Which games are you trying to back up?

Or you can talk to someone like my shop where we can read and program
devices right back to 1702As so we could read your chips and give you a
copy of the archive. Not free I'm afraid! Cost depends on the device read.

John :-#)#
The machine in question is a CNC lathe with a Fanuc control. Neither
Fanuc or Miyano, the lathe manufacturer, have any more EPROMs.
Eric


So, what are the part numbers of the EPROMs? Chances are it is fairly
modern, and indeed you want to archive those!

I'd archive them for you if you want to make me a small injection mold
or two (ducking).

John :-#)#
Greetings John,
I'll get part numbers tomorrow and post them. All the EPROMs in my
Fanuc controls are, I think, the same part.
After I read the EPROMs I would also like to look at what is
written in them. In particular some of them have ladders. I spoke with
Miyano, who wrote the ladders for the lathe, and they don't have any
records of what was written. But I'm not sure if I am going to need
special software to make sense of what was written.
I want to do this because the Miyano lathe didn't come with a rapid
override switch or a spindle override switch. Or even a spindle stop
switch that works when the lathe is running a program. These features
are all options for the control and the machine tool maker decides
which ones to use.
The machine moves very fast in rapid, has a 15 hp spindle, and
crashes are nerve wracking. This machine is the only CNC machine I
have seen that does not have a rapid override. Setups with a new
program always make me nervous.

Thanks,
Eric


If all you want to do is read out the contents of a parallel EPROM and
save it an Arduino-type uP should be good enough to do that with a
little circuit design and code - hook cascaded binary counters to the
address lines, hook data lines to the Arduino, step through each address
one by one and log the data to PC over USB/serial connection.

You could then concatenate the data into a .bin file and use a program
like Binwalk to analyze the firmware and find the code and data
sections. A disassembler like Ida could probably then spit out a basic
disassembly with C-like structure if the code is for a processor it
supports.


https://gbhackers.com/analyzing-embedded-files-and-executable-code-with-frimware-images-binwalk/

https://www.hex-rays.com/products/ida/processors.shtml

On Mon, 4 Dec 2017 12:46:12 -0500, bitrex
wrote:

On 11/30/2017 09:29 PM, wrote:
On Thu, 30 Nov 2017 15:12:01 -0800, John Robertson
wrote:

On 2017/11/30 3:09 PM, wrote:
On Thu, 30 Nov 2017 11:56:10 -0800, John Robertson
wrote:

On 2017/11/30 9:33 AM, wrote:
I have several EPROMs from the 1980s that I would like to copy so that
I will have backups. I see all sorts of readers/programmers online and
on eBay but I don't know what to avoid or buy. I have EPROMs that I
can practice with. They are good as far as I know but the info in them
is for a different machine. So I was thinking I could copy one, then
program a new one with the copied data, and then compare the two to
make sure all the data was copied correctly. I am assuming that the
software I use to copy and write will also have the ability to compare
the two devices. I may be wrong. In about a month the machine I am
most worried about will be free for long enough for me to do the
copying process. I do know how to handle the boards properly to avoid
static and other damage and I do have a nice tool made for removing
and inserting the devices. Any advice or suggestions?
Thanks,
Eric


Hi Eric,

It all depends on the chip. For example - 2716s - most Eprom programmers
can still read those, however if you have 2532s that is harder to find a
reader for. 2732s, 2764s, and later almost any inexpensive device (Wilem
for example) will read those.

If you have 2708s then you will have to buy a legacy Eprom programmer to
read those unless you are adept at making interface modules - you have
to provide +12 and -5 for 2708s. Earlier still devices, and PROMs again
need more specialized reader/programmers.

Most of the 70s games are archived and not too hard to find via MAME.
Which games are you trying to back up?

Or you can talk to someone like my shop where we can read and program
devices right back to 1702As so we could read your chips and give you a
copy of the archive. Not free I'm afraid! Cost depends on the device read.

John :-#)#
The machine in question is a CNC lathe with a Fanuc control. Neither
Fanuc or Miyano, the lathe manufacturer, have any more EPROMs.
Eric


So, what are the part numbers of the EPROMs? Chances are it is fairly
modern, and indeed you want to archive those!

I'd archive them for you if you want to make me a small injection mold
or two (ducking).

John :-#)#
Greetings John,
I'll get part numbers tomorrow and post them. All the EPROMs in my
Fanuc controls are, I think, the same part.
After I read the EPROMs I would also like to look at what is
written in them. In particular some of them have ladders. I spoke with
Miyano, who wrote the ladders for the lathe, and they don't have any
records of what was written. But I'm not sure if I am going to need
special software to make sense of what was written.
I want to do this because the Miyano lathe didn't come with a rapid
override switch or a spindle override switch. Or even a spindle stop
switch that works when the lathe is running a program. These features
are all options for the control and the machine tool maker decides
which ones to use.
The machine moves very fast in rapid, has a 15 hp spindle, and
crashes are nerve wracking. This machine is the only CNC machine I
have seen that does not have a rapid override. Setups with a new
program always make me nervous.

Thanks,
Eric


If all you want to do is read out the contents of a parallel EPROM and
save it an Arduino-type uP should be good enough to do that with a
little circuit design and code - hook cascaded binary counters to the
address lines, hook data lines to the Arduino, step through each address
one by one and log the data to PC over USB/serial connection.

You could then concatenate the data into a .bin file and use a program
like Binwalk to analyze the firmware and find the code and data
sections. A disassembler like Ida could probably then spit out a basic
disassembly with C-like structure if the code is for a processor it
supports.


https://gbhackers.com/analyzing-embedded-files-and-executable-code-with-frimware-images-binwalk/

https://www.hex-rays.com/products/ida/processors.shtml
I'm sure you could do everything you describe above but in this case I
really need something that is basically plug and play. But thanks
anyway.
Eric

On Fri, 1 Dec 2017 00:33:14 -0800, John Robertson
wrote:

On 2017/11/30 6:29 PM, wrote:
On Thu, 30 Nov 2017 15:12:01 -0800, John Robertson
wrote:

On 2017/11/30 3:09 PM, wrote:
On Thu, 30 Nov 2017 11:56:10 -0800, John Robertson
wrote:

On 2017/11/30 9:33 AM, wrote:
I have several EPROMs from the 1980s that I would like to copy so that
I will have backups. I see all sorts of readers/programmers online and
on eBay but I don't know what to avoid or buy. I have EPROMs that I
can practice with. They are good as far as I know but the info in them
is for a different machine. So I was thinking I could copy one, then
program a new one with the copied data, and then compare the two to
make sure all the data was copied correctly. I am assuming that the
software I use to copy and write will also have the ability to compare
the two devices. I may be wrong. In about a month the machine I am
most worried about will be free for long enough for me to do the
copying process. I do know how to handle the boards properly to avoid
static and other damage and I do have a nice tool made for removing
and inserting the devices. Any advice or suggestions?
Thanks,
Eric


Hi Eric,

It all depends on the chip. For example - 2716s - most Eprom programmers
can still read those, however if you have 2532s that is harder to find a
reader for. 2732s, 2764s, and later almost any inexpensive device (Wilem
for example) will read those.

If you have 2708s then you will have to buy a legacy Eprom programmer to
read those unless you are adept at making interface modules - you have
to provide +12 and -5 for 2708s. Earlier still devices, and PROMs again
need more specialized reader/programmers.

Most of the 70s games are archived and not too hard to find via MAME.
Which games are you trying to back up?

Or you can talk to someone like my shop where we can read and program
devices right back to 1702As so we could read your chips and give you a
copy of the archive. Not free I'm afraid! Cost depends on the device read.

John :-#)#
The machine in question is a CNC lathe with a Fanuc control. Neither
Fanuc or Miyano, the lathe manufacturer, have any more EPROMs.
Eric


So, what are the part numbers of the EPROMs? Chances are it is fairly
modern, and indeed you want to archive those!

I'd archive them for you if you want to make me a small injection mold
or two (ducking).

John :-#)#
Greetings John,
I'll get part numbers tomorrow and post them. All the EPROMs in my
Fanuc controls are, I think, the same part.
After I read the EPROMs I would also like to look at what is
written in them. In particular some of them have ladders. I spoke with
Miyano, who wrote the ladders for the lathe, and they don't have any
records of what was written. But I'm not sure if I am going to need
special software to make sense of what was written.
I want to do this because the Miyano lathe didn't come with a rapid
override switch or a spindle override switch. Or even a spindle stop
switch that works when the lathe is running a program. These features
are all options for the control and the machine tool maker decides
which ones to use.
The machine moves very fast in rapid, has a 15 hp spindle, and
crashes are nerve wracking. This machine is the only CNC machine I
have seen that does not have a rapid override. Setups with a new
program always make me nervous.

Thanks,
Eric


So, the EPROMs hold lookup tables, that are like the old automated looms
shown a long time ago on the Connections (BBC) series?

https://www.youtube.com/watch?v=itd-4lMoXgI

Some of the EPROMs will be operating code, others may be your ladders.
Would need to know the CPU these run under - probably 8-bit like 6502 or
Z80 if early 80s.

Sounds a bit fun.

A couple of fellows I knew back in the 80s and 90s had some rather large
CNC lathes, and mill machines that ran on paper tape. I tried to help
them keep them running but in the end I just didn't know enough (and
this was prior to 1995 - the internet could have saved them) to keep
them going and they shut the shop down as they could not afford newer
equipment. Always felt sad about that. However Honeywell offered zero
support (other than schematics) and they could not find anyone else
remotely interested in trying to help. Nice guys too.

Things were different pre-1995!

John :-#(#
GEEZ! I forgot to post the EPROM part numbers. They are all 2532
devices. Most are made by TI but a couple are Hitachi.
Thanks,
Eric

wrote:
On Fri, 1 Dec 2017 00:33:14 -0800, John Robertson
wrote:

On 2017/11/30 6:29 PM, wrote:
On Thu, 30 Nov 2017 15:12:01 -0800, John Robertson
wrote:

On 2017/11/30 3:09 PM, wrote:
On Thu, 30 Nov 2017 11:56:10 -0800, John Robertson
wrote:

On 2017/11/30 9:33 AM, wrote:
I have several EPROMs from the 1980s that I would like to copy so that
I will have backups. I see all sorts of readers/programmers online and
on eBay but I don't know what to avoid or buy. I have EPROMs that I
can practice with. They are good as far as I know but the info in them
is for a different machine. So I was thinking I could copy one, then
program a new one with the copied data, and then compare the two to
make sure all the data was copied correctly. I am assuming that the
software I use to copy and write will also have the ability to compare
the two devices. I may be wrong. In about a month the machine I am
most worried about will be free for long enough for me to do the
copying process. I do know how to handle the boards properly to avoid
static and other damage and I do have a nice tool made for removing
and inserting the devices. Any advice or suggestions?
Thanks,
Eric


Hi Eric,

It all depends on the chip. For example - 2716s - most Eprom programmers
can still read those, however if you have 2532s that is harder to find a
reader for. 2732s, 2764s, and later almost any inexpensive device (Wilem
for example) will read those.

If you have 2708s then you will have to buy a legacy Eprom programmer to
read those unless you are adept at making interface modules - you have
to provide +12 and -5 for 2708s. Earlier still devices, and PROMs again
need more specialized reader/programmers.

Most of the 70s games are archived and not too hard to find via MAME.
Which games are you trying to back up?

Or you can talk to someone like my shop where we can read and program
devices right back to 1702As so we could read your chips and give you a
copy of the archive. Not free I'm afraid! Cost depends on the device read.

John :-#)#
The machine in question is a CNC lathe with a Fanuc control. Neither
Fanuc or Miyano, the lathe manufacturer, have any more EPROMs.
Eric


So, what are the part numbers of the EPROMs? Chances are it is fairly
modern, and indeed you want to archive those!

I'd archive them for you if you want to make me a small injection mold
or two (ducking).

John :-#)#
Greetings John,
I'll get part numbers tomorrow and post them. All the EPROMs in my
Fanuc controls are, I think, the same part.
After I read the EPROMs I would also like to look at what is
written in them. In particular some of them have ladders. I spoke with
Miyano, who wrote the ladders for the lathe, and they don't have any
records of what was written. But I'm not sure if I am going to need
special software to make sense of what was written.
I want to do this because the Miyano lathe didn't come with a rapid
override switch or a spindle override switch. Or even a spindle stop
switch that works when the lathe is running a program. These features
are all options for the control and the machine tool maker decides
which ones to use.
The machine moves very fast in rapid, has a 15 hp spindle, and
crashes are nerve wracking. This machine is the only CNC machine I
have seen that does not have a rapid override. Setups with a new
program always make me nervous.

Thanks,
Eric


So, the EPROMs hold lookup tables, that are like the old automated looms
shown a long time ago on the Connections (BBC) series?

https://www.youtube.com/watch?v=itd-4lMoXgI

Some of the EPROMs will be operating code, others may be your ladders.
Would need to know the CPU these run under - probably 8-bit like 6502 or
Z80 if early 80s.

Sounds a bit fun.

A couple of fellows I knew back in the 80s and 90s had some rather large
CNC lathes, and mill machines that ran on paper tape. I tried to help
them keep them running but in the end I just didn't know enough (and
this was prior to 1995 - the internet could have saved them) to keep
them going and they shut the shop down as they could not afford newer
equipment. Always felt sad about that. However Honeywell offered zero
support (other than schematics) and they could not find anyone else
remotely interested in trying to help. Nice guys too.

Things were different pre-1995!

John :-#(#
GEEZ! I forgot to post the EPROM part numbers. They are all 2532
devices. Most are made by TI but a couple are Hitachi.


You can find adapters designed for Commodore 64 computers to change
the 2532 wiring to 2732. They can be built with a couple IC sockets and
a couple jumpers.

On 2017/12/04 4:28 PM, wrote:
On Fri, 1 Dec 2017 00:33:14 -0800, John Robertson
wrote:

On 2017/11/30 6:29 PM, wrote:
On Thu, 30 Nov 2017 15:12:01 -0800, John Robertson
wrote:

On 2017/11/30 3:09 PM, wrote:
On Thu, 30 Nov 2017 11:56:10 -0800, John Robertson
wrote:

On 2017/11/30 9:33 AM, wrote:
I have several EPROMs from the 1980s that I would like to copy so that
I will have backups. I see all sorts of readers/programmers online and
on eBay but I don't know what to avoid or buy. I have EPROMs that I
can practice with. They are good as far as I know but the info in them
is for a different machine. So I was thinking I could copy one, then
program a new one with the copied data, and then compare the two to
make sure all the data was copied correctly. I am assuming that the
software I use to copy and write will also have the ability to compare
the two devices. I may be wrong. In about a month the machine I am
most worried about will be free for long enough for me to do the
copying process. I do know how to handle the boards properly to avoid
static and other damage and I do have a nice tool made for removing
and inserting the devices. Any advice or suggestions?
Thanks,
Eric


Hi Eric,

It all depends on the chip. For example - 2716s - most Eprom programmers
can still read those, however if you have 2532s that is harder to find a
reader for. 2732s, 2764s, and later almost any inexpensive device (Wilem
for example) will read those.

If you have 2708s then you will have to buy a legacy Eprom programmer to
read those unless you are adept at making interface modules - you have
to provide +12 and -5 for 2708s. Earlier still devices, and PROMs again
need more specialized reader/programmers.

Most of the 70s games are archived and not too hard to find via MAME.
Which games are you trying to back up?

Or you can talk to someone like my shop where we can read and program
devices right back to 1702As so we could read your chips and give you a
copy of the archive. Not free I'm afraid! Cost depends on the device read.

John :-#)#
The machine in question is a CNC lathe with a Fanuc control. Neither
Fanuc or Miyano, the lathe manufacturer, have any more EPROMs.
Eric


So, what are the part numbers of the EPROMs? Chances are it is fairly
modern, and indeed you want to archive those!

I'd archive them for you if you want to make me a small injection mold
or two (ducking).

John :-#)#
Greetings John,
I'll get part numbers tomorrow and post them. All the EPROMs in my
Fanuc controls are, I think, the same part.
After I read the EPROMs I would also like to look at what is
written in them. In particular some of them have ladders. I spoke with
Miyano, who wrote the ladders for the lathe, and they don't have any
records of what was written. But I'm not sure if I am going to need
special software to make sense of what was written.
I want to do this because the Miyano lathe didn't come with a rapid
override switch or a spindle override switch. Or even a spindle stop
switch that works when the lathe is running a program. These features
are all options for the control and the machine tool maker decides
which ones to use.
The machine moves very fast in rapid, has a 15 hp spindle, and
crashes are nerve wracking. This machine is the only CNC machine I
have seen that does not have a rapid override. Setups with a new
program always make me nervous.

Thanks,
Eric


So, the EPROMs hold lookup tables, that are like the old automated looms
shown a long time ago on the Connections (BBC) series?

https://www.youtube.com/watch?v=itd-4lMoXgI

Some of the EPROMs will be operating code, others may be your ladders.
Would need to know the CPU these run under - probably 8-bit like 6502 or
Z80 if early 80s.

Sounds a bit fun.

A couple of fellows I knew back in the 80s and 90s had some rather large
CNC lathes, and mill machines that ran on paper tape. I tried to help
them keep them running but in the end I just didn't know enough (and
this was prior to 1995 - the internet could have saved them) to keep
them going and they shut the shop down as they could not afford newer
equipment. Always felt sad about that. However Honeywell offered zero
support (other than schematics) and they could not find anyone else
remotely interested in trying to help. Nice guys too.

Things were different pre-1995!

John :-#(#
GEEZ! I forgot to post the EPROM part numbers. They are all 2532
devices. Most are made by TI but a couple are Hitachi.
Thanks,
Eric


2532s - those I think can be read by some inexpensive programmers,
burning is another case as they are orphans as far as modern programmers
are concerned.

You can read them as a 2732 if you make an adapter socket if your reader
doesn't handle the 2532s. If you have an old 24 pin wire-wrap socket
with long legs that is easy to use to bend the legs around to gain
access to the data.

https://www.aussiearcade.com/showthr...-Eprom-Adaptor

I have several tools that handle 2532s easily enough. Xeltek, Data I/O,
Andromeda, and a few other programmers lying around the shop. However I
think I am too far away to be useful to you.

John :-#)#

--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

On 2017/12/04 4:37 PM, Michael A Terrell wrote:
wrote:
On Fri, 1 Dec 2017 00:33:14 -0800, John Robertson
wrote:

On 2017/11/30 6:29 PM, wrote:
On Thu, 30 Nov 2017 15:12:01 -0800, John Robertson
wrote:

On 2017/11/30 3:09 PM, wrote:
On Thu, 30 Nov 2017 11:56:10 -0800, John Robertson

wrote:

On 2017/11/30 9:33 AM, wrote:
I have several EPROMs from the 1980s that I would like to copy
so that
I will have backups. I see all sorts of readers/programmers
online and
on eBay but I don't know what to avoid or buy. I have EPROMs that I
can practice with. They are good as far as I know but the info
in them
is for a different machine. So I was thinking I could copy one,
then
program a new one with the copied data, and then compare the two to
make sure all the data was copied correctly. I am assuming that the
software I use to copy and write will also have the ability to
compare
the two devices. I may be wrong. In about a month the machine I am
most worried about will be free for long enough for me to do the
copying process. I do know how to handle the boards properly to
avoid
static and other damage and I do have a nice tool made for removing
and inserting the devices.Â* Any advice or suggestions?
Thanks,
Eric


Hi Eric,

It all depends on the chip. For example - 2716s - most Eprom
programmers
can still read those, however if you have 2532s that is harder to
find a
reader for. 2732s, 2764s, and later almost any inexpensive device
(Wilem
for example) will read those.

If you have 2708s then you will have to buy a legacy Eprom
programmer to
read those unless you are adept at making interface modules - you
have
to provide +12 and -5 for 2708s. Earlier still devices, and PROMs
again
need more specialized reader/programmers.

Most of the 70s games are archived and not too hard to find via
MAME.
Which games are you trying to back up?

Or you can talk to someone like my shop where we can read and
program
devices right back to 1702As so we could read your chips and give
you a
copy of the archive. Not free I'm afraid! Cost depends on the
device read.

John :-#)#
The machine in question is a CNC lathe with a Fanuc control. Neither
Fanuc or Miyano, the lathe manufacturer, have any more EPROMs.
Eric


So, what are the part numbers of the EPROMs? Chances are it is fairly
modern, and indeed you want to archive those!

I'd archive them for you if you want to make me a small injection mold
or two (ducking).

John :-#)#
Greetings John,
I'll get part numbers tomorrow and post them. All the EPROMs in my
Fanuc controlsÂ* are, I think, the same part.
Â*Â*Â* After I read the EPROMs I would also like to look at what is
written in them. In particular some of them have ladders. I spoke with
Miyano, who wrote the ladders for the lathe, and they don't have any
records of what was written. But I'm not sure if I am going to need
special software to make sense of what was written.
Â*Â*Â* I want to do this because the Miyano lathe didn't come with a rapid
override switch or a spindle override switch. Or even a spindle stop
switch that works when the lathe is running a program. These features
are all options for the control and the machine tool maker decides
which ones to use.
Â*Â*Â* The machine moves very fast in rapid, has a 15 hp spindle, and
crashes are nerve wracking. This machine is the only CNC machine I
have seen that does not have a rapid override. Setups with a new
program always make me nervous.

Thanks,
Eric


So, the EPROMs hold lookup tables, that are like the old automated looms
shown a long time ago on the Connections (BBC) series?

https://www.youtube.com/watch?v=itd-4lMoXgI

Some of the EPROMs will be operating code, others may be your ladders.
Would need to know the CPU these run under - probably 8-bit like 6502 or
Z80 if early 80s.

Sounds a bit fun.

A couple of fellows I knew back in the 80s and 90s had some rather large
CNC lathes, and mill machines that ran on paper tape. I tried to help
them keep them running but in the end I just didn't know enough (and
this was prior to 1995 - the internet could have saved them) to keep
them going and they shut the shop down as they could not afford newer
equipment. Always felt sad about that. However Honeywell offered zero
support (other than schematics) and they could not find anyone else
remotely interested in trying to help. Nice guys too.

Things were different pre-1995!

John :-#(#
GEEZ! I forgot to post the EPROM part numbers. They are all 2532
devices. Most are made by TI but a couple are Hitachi.


Â*Â* You can find adapters designed for Commodore 64 computers to change
the 2532 wiring to 2732. They can be built with a couple IC sockets and
a couple jumpers.

Let me see, the pins that need to be exchanged a

2532 - Pin 21 Vpp, 18 is A11
2732 - Pin 21 is A11 and 18 is /E

So, as I recall, you just need lift pin 21 on your read adapter socket,
and tie that to pin 24 (need 5V to read), then lift pin 18 of the read
socket and tie it to pin 21 of the EPROM reader socket.

Clear enough?

John :-#)#


John ;-#)#

--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

On 12/04/2017 07:20 PM, wrote:
On Mon, 4 Dec 2017 12:46:12 -0500, bitrex
wrote:

On 11/30/2017 09:29 PM, wrote:
On Thu, 30 Nov 2017 15:12:01 -0800, John Robertson
wrote:

On 2017/11/30 3:09 PM, wrote:
On Thu, 30 Nov 2017 11:56:10 -0800, John Robertson
wrote:

On 2017/11/30 9:33 AM, wrote:
I have several EPROMs from the 1980s that I would like to copy so that
I will have backups. I see all sorts of readers/programmers online and
on eBay but I don't know what to avoid or buy. I have EPROMs that I
can practice with. They are good as far as I know but the info in them
is for a different machine. So I was thinking I could copy one, then
program a new one with the copied data, and then compare the two to
make sure all the data was copied correctly. I am assuming that the
software I use to copy and write will also have the ability to compare
the two devices. I may be wrong. In about a month the machine I am
most worried about will be free for long enough for me to do the
copying process. I do know how to handle the boards properly to avoid
static and other damage and I do have a nice tool made for removing
and inserting the devices. Any advice or suggestions?
Thanks,
Eric


Hi Eric,

It all depends on the chip. For example - 2716s - most Eprom programmers
can still read those, however if you have 2532s that is harder to find a
reader for. 2732s, 2764s, and later almost any inexpensive device (Wilem
for example) will read those.

If you have 2708s then you will have to buy a legacy Eprom programmer to
read those unless you are adept at making interface modules - you have
to provide +12 and -5 for 2708s. Earlier still devices, and PROMs again
need more specialized reader/programmers.

Most of the 70s games are archived and not too hard to find via MAME.
Which games are you trying to back up?

Or you can talk to someone like my shop where we can read and program
devices right back to 1702As so we could read your chips and give you a
copy of the archive. Not free I'm afraid! Cost depends on the device read.

John :-#)#
The machine in question is a CNC lathe with a Fanuc control. Neither
Fanuc or Miyano, the lathe manufacturer, have any more EPROMs.
Eric


So, what are the part numbers of the EPROMs? Chances are it is fairly
modern, and indeed you want to archive those!

I'd archive them for you if you want to make me a small injection mold
or two (ducking).

John :-#)#
Greetings John,
I'll get part numbers tomorrow and post them. All the EPROMs in my
Fanuc controls are, I think, the same part.
After I read the EPROMs I would also like to look at what is
written in them. In particular some of them have ladders. I spoke with
Miyano, who wrote the ladders for the lathe, and they don't have any
records of what was written. But I'm not sure if I am going to need
special software to make sense of what was written.
I want to do this because the Miyano lathe didn't come with a rapid
override switch or a spindle override switch. Or even a spindle stop
switch that works when the lathe is running a program. These features
are all options for the control and the machine tool maker decides
which ones to use.
The machine moves very fast in rapid, has a 15 hp spindle, and
crashes are nerve wracking. This machine is the only CNC machine I
have seen that does not have a rapid override. Setups with a new
program always make me nervous.

Thanks,
Eric


If all you want to do is read out the contents of a parallel EPROM and
save it an Arduino-type uP should be good enough to do that with a
little circuit design and code - hook cascaded binary counters to the
address lines, hook data lines to the Arduino, step through each address
one by one and log the data to PC over USB/serial connection.

You could then concatenate the data into a .bin file and use a program
like Binwalk to analyze the firmware and find the code and data
sections. A disassembler like Ida could probably then spit out a basic
disassembly with C-like structure if the code is for a processor it
supports.


https://gbhackers.com/analyzing-embedded-files-and-executable-code-with-frimware-images-binwalk/

https://www.hex-rays.com/products/ida/processors.shtml
I'm sure you could do everything you describe above but in this case I
really need something that is basically plug and play. But thanks
anyway.
Eric


If you change your mind someone already did the hard work of designing
the hardware and writing the code he

http://simonwinder.com/2015/05/how-to-read-old-eproms-with-the-arduino/

All you'd have to do is buy the parts and about 20 minutes of soldering,
then plug in and execute the code.

On 2017/12/05 7:11 AM, bitrex wrote:
On 12/04/2017 07:20 PM, wrote:
On Mon, 4 Dec 2017 12:46:12 -0500, bitrex
wrote:

On 11/30/2017 09:29 PM, wrote:
On Thu, 30 Nov 2017 15:12:01 -0800, John Robertson
wrote:

On 2017/11/30 3:09 PM, wrote:
On Thu, 30 Nov 2017 11:56:10 -0800, John Robertson

wrote:

On 2017/11/30 9:33 AM, wrote:
I have several EPROMs from the 1980s that I would like to copy
so that
I will have backups. I see all sorts of readers/programmers
online and
on eBay but I don't know what to avoid or buy. I have EPROMs that I
can practice with. They are good as far as I know but the info
in them
is for a different machine. So I was thinking I could copy one,
then
program a new one with the copied data, and then compare the two to
make sure all the data was copied correctly. I am assuming that the
software I use to copy and write will also have the ability to
compare
the two devices. I may be wrong. In about a month the machine I am
most worried about will be free for long enough for me to do the
copying process. I do know how to handle the boards properly to
avoid
static and other damage and I do have a nice tool made for removing
and inserting the devices.Â* Any advice or suggestions?
Thanks,
Eric


Hi Eric,

It all depends on the chip. For example - 2716s - most Eprom
programmers
can still read those, however if you have 2532s that is harder to
find a
reader for. 2732s, 2764s, and later almost any inexpensive device
(Wilem
for example) will read those.

If you have 2708s then you will have to buy a legacy Eprom
programmer to
read those unless you are adept at making interface modules - you
have
to provide +12 and -5 for 2708s. Earlier still devices, and PROMs
again
need more specialized reader/programmers.

Most of the 70s games are archived and not too hard to find via
MAME.
Which games are you trying to back up?

Or you can talk to someone like my shop where we can read and
program
devices right back to 1702As so we could read your chips and give
you a
copy of the archive. Not free I'm afraid! Cost depends on the
device read.

John :-#)#
The machine in question is a CNC lathe with a Fanuc control. Neither
Fanuc or Miyano, the lathe manufacturer, have any more EPROMs.
Eric


So, what are the part numbers of the EPROMs? Chances are it is fairly
modern, and indeed you want to archive those!

I'd archive them for you if you want to make me a small injection mold
or two (ducking).

John :-#)#
Greetings John,
I'll get part numbers tomorrow and post them. All the EPROMs in my
Fanuc controlsÂ* are, I think, the same part.
Â*Â*Â*Â* After I read the EPROMs I would also like to look at what is
written in them. In particular some of them have ladders. I spoke with
Miyano, who wrote the ladders for the lathe, and they don't have any
records of what was written. But I'm not sure if I am going to need
special software to make sense of what was written.
Â*Â*Â*Â* I want to do this because the Miyano lathe didn't come with a
rapid
override switch or a spindle override switch. Or even a spindle stop
switch that works when the lathe is running a program. These features
are all options for the control and the machine tool maker decides
which ones to use.
Â*Â*Â*Â* The machine moves very fast in rapid, has a 15 hp spindle, and
crashes are nerve wracking. This machine is the only CNC machine I
have seen that does not have a rapid override. Setups with a new
program always make me nervous.
Thanks,
Eric


If all you want to do is read out the contents of a parallel EPROM and
save it an Arduino-type uP should be good enough to do that with a
little circuit design and code - hook cascaded binary counters to the
address lines, hook data lines to the Arduino, step through each address
one by one and log the data to PC over USB/serial connection.

You could then concatenate the data into a .bin file and use a program
like Binwalk to analyze the firmware and find the code and data
sections. A disassembler like Ida could probably then spit out a basic
disassembly with C-like structure if the code is for a processor it
supports.


https://gbhackers.com/analyzing-embedded-files-and-executable-code-with-frimware-images-binwalk/


https://www.hex-rays.com/products/ida/processors.shtml
I'm sure you could do everything you describe above but in this case I
really need something that is basically plug and play. But thanks
anyway.
Eric


If you change your mind someone already did the hard work of designing
the hardware and writing the code he

http://simonwinder.com/2015/05/how-to-read-old-eproms-with-the-arduino/

All you'd have to do is buy the parts and about 20 minutes of soldering,
then plug in and execute the code.



I suspect he would be nervous about building something like that where
there exists the possibility of destroying an irreplaceable part. At
least a commercial EPROM burner that can read 2532s is very unlikely to
cause issues, a home-made one has that potential for folks that haven't
done it before.

Another possible solution is for the OP to join one of the machinist
forums and see if anyone else has a similar CNC lathe and has already
backed up the EPROMs.

John :-#)#

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