4216-03X NVRAM Re: Announcement 189-012 IBM PERSONAL PAGE PRINTER II (4
From Louis Ohland@21:1/5 to All on Sat Nov 25 09:26:16 2023
On the IBM 4216-03X printers, these default emulation modes are stored
in a Non-Violatable Random Access Memory (NVRAM). These relatively
expensive chips have the advantage of keeping their content even when no
power is available to them. Unfortunately, the maximum write/read cycle
count is relatively limited. It may only be good for 5000 cycles or
less. Therefore, constantly switching the emulation modes may not be the
best idea in the long run, because it may be necessary to repair the
printer if the NVRAM doesn't work any more.