ROM upgrade - cfx 9850 GU1


ROM upgrade - cfx 9850 GU1.2
It's working !!!

Assembler support tested with following results:

Note: the format of my binaries is plain cas so they contain only the clean data without headers and end of file characters. Do not edit the binary file in your calculator, it's prepared to be run clicking the [EXE] key, if you add/remove any character, the code will move, so the routine MUST crash, because I am using the absolute addresses in jumps (I didn't find the relative addressing)

Do not try to use any universal assembler - binary routines for cfx9850 G are stored backwards (if you load them as files) and the last address of the routine is fixed to 7FFE, so you cannot use directive ORG or similar.

How to install GU1.2


ROM upgrade- cfx 9850 GU1.3  - in development


ROM upgrade - cfx 9850 GU2- planned

I cannot do it all myself, I need YOUR HELP!!!!

Contact me