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[WTB] TMTLogic GFX-Nine / Tecnobytes PowerGraph Light
Score: 152.62 %,
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 ...
[WTS] Vampire Killer
Score: 153.67 %,
Type: Forum topic , Comments: 2 comments
Hello,
Located in Belgium, price without shipping :
. Vampire Killer (EU version), cartridge only (very good) and manual (worn) : 70 euros
. Vampire Killer (JP version), cartridge only (excellent) : 90 euros
PM me at metalion (at) orange ...
ASCII 8 mapper does not work
Score: 152.76 %,
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 ...
Disabling sprites during VBLANK
Score: 155.59 %,
Type: Forum topic , Comments: 2 comments
Hi everyone,
If I want to maximize the bytes that I can transfer at VBLANK, do I have to disable sprites manually ?
Or is it already part of the VDP's behavior during VBLANK ?
In other words, if I take the (very useful) speed table of ...
Do you always use di/ei for VDP access ?
Score: 152.77 %,
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
...
Enemy sprite rendering routine call
Score: 160.26 %,
Type: Forum topic , Comments: 5 comments
be to try My advice would be to try both and see which one works better.
Set a flag variable: 0 to Set a flag variable: 0 to render 1 to update sprites
Set a frame variable
Sprites update in the ISR:
If flag=1 do other ISR hooked tasks then ret
If flag=0 execute the whole ISR hooked tasks, set ...
Fast 16-bit signed comparison
Score: 159.69 %,
Type: Forum topic , Comments: 23 comments
and 'hl' and I want to be able to output according to that matrix :
hl<=0 hl>0
de<=0 0 hl
de>0 de max(hl,de)
I've coded this, but it's messy ('hl' contains the output):
ld a,h ; 5
cp d ; 5
jp z,.same ; 11 | same sign
jp c,.hl_max ; 11 | de < 0 and hl >= 0 ...
First steps with MSX-Music
Score: 159.2 %,
Type: Forum topic , Comments: 29 comments
(0,0,1,1,1,1,1,1,1,1,1)
20 AD=&h7FF4:DAT=&h7FF5
30 POKEAD,&h30:POKEDAT,&h2F:' Instrument 2, volume 15 ... POKEAD,&h20:POKEDAT,&b00001000:' Octave = 4, F-number MSB = 0
60 POKEAD,&h20:POKEDAT,&b00011000:' +Key on
This ... silent) while 0 means no attenuation (max volume).
p.s. There is no need to set key-on separately from ...
FM rythm mode question
Score: 158.04 %,
Type: Forum topic , Comments: 2 comments
confusing register addresses 16H-18H (hexadecimal, 0-base) for channels 7-9 with slots 13-18 (decimal, ...
Konami/ASCII mapper page switch latency
Score: 159.58 %,
Type: Forum topic , Comments: 4 comments
Hello,
Is there any hardware latency that needs to be taken into account when switching page within a Konami/ASCII mapper ?
There is no latency. The bank There is no latency. The bank registers directly latch the value that is provided on ...
