HP-71B MultiMod ROM Emulator User Manual

[Sylvain Cote]

(01-20-2021 04:08 PM)mfleming Wrote:  

(01-20-2021 01:23 PM)Sylvain Cote Wrote:  Question: for the place holder lines in the table, what should be put there to make it neutral, like default values for that type of line.

An invalid value for the size nib, 6 or less, would be rejected during enumeration. Although I do some sanity checks while processing the table, these 8-bit controllers lack the RPM (Read Programmers Mind) instruction, so I ultimately have to rely on proper care being taken when setting up the table. OTOH, part of the fun might be seeing what happens if you enumerate the same ROM multiple times - backup first

So, could these be reasonable default place holder values:

Code:

; SIZE , RESV , TYPE , CLAS , LAST , FLAG , ADDR , CHIP
  0x0A , 0x00 , 0x01 , 0x00 , 0x08 , 0x01 , 0x00 , 0x05

or this ?

Code:

; SIZE , RESV , TYPE , CLAS , LAST , FLAG , ADDR , CHIP
  0x0A , 0x00 , 0x01 , 0x00 , 0x00 , 0x00 , 0x00 , 0x00

Sylvain

edit: added the second option