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Do you always use di/ei for VDP access ?
Score: 153.18 %,
Type: Forum topic , Comments: 9 comments
Hi everyone,
Do you use di/ei for every case of VDP access ?
It seems to me it can be avoided when it's a port where ISR will not access.
For example, loading the palette colors on the V9938:
ld hl,palette
ld bc,16*2:9Ah
xor a
...
ASCII 8 mapper does not work
Score: 153.16 %,
Type: Forum topic , Comments: 9 comments
at the beginning to facilitate the automatic recognition :
ld a,0
ld (6000h),a
ld a,1
ld (6800h),a
ld a,2 ...
call 138h
[2] rrca
and 03h
ld c,a
ld hl,0FCC1h
add a,l
ld l,a
ld a,(hl)
and 80h
or c
ld c,a
[4] inc l
ld a,(hl)
and 0Ch
or c
ld h,80h
jp 24h
What I do not understand, is that it works ...
[WTB] TMTLogic GFX-Nine / Tecnobytes PowerGraph Light
Score: 153.02 %,
Type: Forum topic , Comments: 1 comment
Hello,
As the title says, I'm searching for a V9990 extension.
Either a TMTLogic GFX-Nine or a Tecnobytes Powergraph Light .
Thanks.
Technobytes are running a Technobytes are running a pre-order on a new batch, in case ...
Setting up a command on V9990
Score: 153.05 %,
Type: Forum topic , Comments: 8 comments
do_command
test
word 0,0,32,32,64,64,0,0FFh,6666h,6666h
byte 20h
do_command
ld a,32
out (reg_select),a ... debuggable from the openMSX console with:
debug read Sunrise\ GFX9000\ regs [n]
Where [n] is 0 ... with the stand corrected, with the debugger version I have also the high regs always show 0, perhaps a bug indeed ...
