Posted By
Csabo
on 2004-11-18
16:10:33
|  Re: Insane Ebay auction for C116
You can do this on all 264 series computers. They all use the TED, and the registers and their meaning are the same. It's TED register 7 (address: $FF07 / 65287 ) that controls PAL/NTSC. When bit 6 (value $40 / 64 ) is cleared, you have PAL. If it's set, you have NTSC.
In BASIC, you'd write:
POKE 65287, PEEK ( 65287 ) AND 191 : REM PAL
POKE 65287, PEEK ( 65287 ) OR 64 : REM NTSC
In assembler, you'd write:
LDA $FF07 / AND #$BF / STA $FF07 ; PAL
LDA $FF07 / ORA #$40 / STA $FF07 ; NTSC
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