I have visualised 2nd vram (SCREEN-1) on JSROM, that maps over system variables. JSROM machines seem closest to Minerva.
Code: Select all
10 REMark HEX(20000)=131072 .. SCREEN0, HEX(28000)=163840 .. SCREEN1
20 FOR s=0 TO 32764 STEP 4: POKE_L s+131072, PEEK_L(s+163840)
30 PAUSE
Can anyone help please, I wish to make --SAFE-- use of the second VRAM (SCREEN1), if possible. Also some of QDOS routines take SCREEN{0,1} as their parameter.
Many thanks.
Tomas