Nagered hard drive;'(..
Andy Dingley wrote:
On 25 June, 07:57, "dennis@home"
wrote:
I had a piece of PROM where you sewed wires through the ferrite rings to
program it.
I doubt that very much indeed.
Ready-laced, and used as RAM (actually NVRAM), yes we've all got the
odd plane or two of that lying around. But PROM by intermittent
lacing? I doubt that very much indeed.
(I'm sure that someone somewhere did make this, I just doubt that
yours used lacing to program it rather than matrix-selected write
pulses.)
Before fusible link proms, you used diodes, switches or links on the boards.
Core stores are early forms of disk..really.
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