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VDP indirect register access
Score: 170.48 %,
Type: Forum topic , Comments: 0 comments
Learned something today about the V9938/58 indirect register access which I never gave a thought before
I am playing with an FPGA VGA text mode adapter which mirrors the MSX text screen (screen 0 and 1) by snooping on VDP IO access.
As the BIOS of MSX2 and up uses the VDP indirect register access ...
SymAmp 4.1 for SymbOS with OPL2/3/4 released
Score: 170.42 %,
Type: Forum topic , Comments: 2 comments
SymAmp 4.1 for SymbOS has been released:
http://www.symbos.org/appinfo.htm?00005
It now supports SA2 modules (Surprise! Adlib Tracker 2) for playing these on any OPL3/MoonSound/OPL4 compatible sound devices like the MonsterSound, OPL4 ...
Another question of the Moonblaster file format
Score: 170.24 %,
Type: Forum topic , Comments: 10 comments
see that it writes in register 0x02, but I can't guess the value to write depending ... value of the file its value &0x3F and again but now &0xC0. But I fail to see why.
Can ... because register 0x02 is the modulator value.
Now I'd like to know when I set X+1 in moonblaster ...
SCC waveform sample rate
Score: 170.07 %,
Type: Forum topic , Comments: 3 comments
Hi all,
Just a question about the SCC waveform.
So I understand that the frequency for a channel can be calculated using
freq = clock / (32 * (period+1))
Since a waveform in the SCC is 32 bytes, or samples, does that mean that the ...
How to create SFX for Moonsound's FM registers ?
Score: 170.13 %,
Type: Forum topic , Comments: 42 comments
for FM channels ?
I don't know anything about this. Have 0 experience with it.
I'm also ... 7,(hl)
res 6,(hl)
ld c,$a0
ld hl,AYREGS
.sfxloop:
out (c),a ;first write ...
inc a
cp 13
jr nz,.sfxloop
;/out buffered sfx data So we write to psg register $a0 ...
MSX Anthems (your nominations please)
Score: 169.8 %,
Type: Forum topic , Comments: 8 comments
[dict anthem ]
Will the MRC see a poll once more? :)
My picks (from top of head):
Dragon Slayer: The Legend of Heroes - Field (notably 氷空色釦's 4beat Extended PlusMix ;)) (wondering though when @wolf (+ Carola) will do that ...
Missing red selector indicator bar in Moonblaster
Score: 169.62 %,
Type: Forum topic , Comments: 3 comments
if I recall correctly the original 1chipMSX firmware did not support the screen 0 “blink” mode properly ...
Msx Music playback artifacts
Score: 171.23 %,
Type: Forum topic , Comments: 5 comments
How did you manage to avoid these annoying audio artifacts you can hear when you play consecutive notes at short distance in the same channel?
Before to play the new note i always have to disable the channel by setting to zero the corresponing ...
YM2413 producing buggy output - is that even possible?
Score: 169.48 %,
Type: Forum topic , Comments: 18 comments
that worked, was to set the volume of hithat/cymbal to 1 or 0 (silent)... but that is not ideal (as ... that "... Key-ON bits $26, $27,$28 must always be cleared to 0. Slots 13~18 are related with percussion ... World and it does something strange regarding the 0x0E register. I copy here a piece:
Quote: ...
VERY strange! How to truly reset the YM2413/MSX-MUSIC?
Score: 169.47 %,
Type: Forum topic , Comments: 3 comments
Documentation says: " All registers are cleared to 0 by initialization (initial clear IC terminal = 0 ... regs to 0? I know bits and bytes, but I don't really "get" music that well - could ... tool to debug which values are set exactly. If the drum is first played (via register 0EH) before its ...
