cpc6128: move ascii characters from rom to ram?

[funkheld]

Hi good afternoon.
can you please move the ascii rom into ram and then change it without a symbol / symbol after?


Thank you.
greeting

[AMSDOS]

Hi good afternoon.
can you please move the ascii rom into ram and then change it without a symbol / symbol after?


Thank you.
greeting

In Assembly, the Firmware/BIOS has a section called the Text Functions, in there is an instruction called TXT SET M TABLE, this is the instruction you want to Move ASCII from ROM into RAM. It can be setup like this:

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org &7000 ;; CALL &7000 from BASIC to execute this routine.


ld de,0 ;; first character, since this is zero all 256 characters will be placed into RAM
ld hl,chrset ;; the location of the character set in RAM
call &bbab ;; TXT SET M TABLE
ret ;; return to BASIC if
.chrset defb 0 ;; just make sure there's no other machine code routines since 8x256 is used.


[funkheld]

hello thanks for the help.


greeting