Voyager Emulators Self Test

[agarza]

(08-08-2021 07:48 PM)J-F Garnier Wrote:  

(08-08-2021 03:33 PM)rprosperi Wrote:  For example even HP's own HP-15C LE device does not produce proper results when using the original self-test diagnostics, for the same reason: the emulated h/w is slightly different from what the self-test code expects. But no problem, the 15C LE still works as expected.

The HP-15C LE, both the physical unit and the HP emulator for Windows (hp15c.exe, 2012), are giving Error 9 with code=2 in register X, meaning a ROM checksum error. HP patched some locations of the HP-15C ROM, but didn't update the checksums.

J-F

Since I’m getting code=3 I tried to see what memory addresses were being checked.
It checks ram addresses from 0x07 to 0x00 and 0xff to c0 (backwards) and then it shows Error 9.

Maybe it is accessing an out of range memory address?