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#1
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EPROM Switch
Hello all I have a small project I have been working on and need a
little help. I have a board with a 27c160 bios chip on it and I need to be able to switch the bios back and forth between two version. Its not easy to change the chip because its under a few things. So I made a extention for it. Its a socket with a ribbon cable to a pcb with two 27c160's and a ribbon pin header for each chip. I just move the ribbon cable back and forth as I need. What I would like to do is add a function switch. I just dont know what pins need to be turned on/off. Any help would be great. Thanks, Keith |
#2
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schreef in bericht
oups.com... Hello all I have a small project I have been working on and need a little help. I have a board with a 27c160 bios chip on it and I need to be able to switch the bios back and forth between two version. Its not easy to change the chip because its under a few things. So I made a extention for it. Its a socket with a ribbon cable to a pcb with two 27c160's and a ribbon pin header for each chip. I just move the ribbon cable back and forth as I need. What I would like to do is add a function switch. I just dont know what pins need to be turned on/off. Any help would be great. Thanks, Keith If the chip has a CE (Chip Enable) or CS (Chip Select) this pin would do the trick. Just make one the inverse of the other! Alexander |
#3
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Thats what I am hopeing I just need to know what pin it would be.
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#4
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schreef in bericht
ups.com... Thats what I am hopeing I just need to know what pin it would be. Seriously lack of information!!! All I can say is RTFM. http://www.st.com/stonline/products/...82/m27c160.pdf |
#5
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I know I had a lack of information thats why I asked for help. I was
looking for a manual and could not find one. Thanks for the link thats all I needed. |
#6
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