Core memory emulator using non volatile ram.
elson at pico-systems.com
Sat Dec 15 14:51:35 CST 2018
On 12/15/2018 02:45 PM, Anders Nelson via cctalk wrote:
> Serial flash has an endurance between 10K-100K writes per cell so I think
> that would break down quickly. Wear-leveling on a serial device would be
> very slow...
If you intend to use it as main core memory on an old CPU,
it will perform VERY poorly, as these memories need to erase
a page at a time, and the erase takes milliseconds. So,
writing ONE SINGLE word at a time would invoke an erase
cycle each time, slowing it to 1/1000 or worse the speed of
the original core memory. Also, most old CPUs have the
memory timing built into the CPU, and can't handle a memory
that says "wait".
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