CMT 64Kb RAM module for HP-71b question

[Dave Frederickson]

(10-11-2021 03:06 AM)polbit Wrote:  After spending some time testing on 1BBBB and 2CDCC 71 machines, and moving my RAM modules around, here is my conclusion:

- MultiRom with ulib52 enabled, with HP-IL works with 2x32K/1x64K RAM. Adding 3rd 32K RAM makes it crash as soon as I free port of the 3rd RAM module, or randomly while in use.

- if I disable ulib52 OR remove HP-IL module, I can reliably use the 3rd RAM module.

Consider that initially the 3rd RAM module is configured as RAM, but when you freeport it it's configured as ROM/IRAM. See https://www.hpmuseum.org/forum/thread-76...l#pid67770 thru Post #23.