|
ForumsSega Master System / Mark III / Game GearSG-1000 / SC-3000 / SF-7000 / OMV |
Home - Forums - Games - Scans - Maps - Cheats - Credits Music - Videos - Development - Hacks - Translations - Homebrew |
Author | Message |
---|---|
|
VGM 1.01 proposal...
Posted: Mon Sep 24, 2001 10:56 pm
|
To allow playing of 60Hz files at 50Hz (and vice versa), I've had to slightly extend the format. Older files will still work fine. Please read this:
VGM 1.01 proposed specification and if you have anything to say, please say... if nobody objects, I'd like to make it official with the release of the rate-changing plugin in a few days. Maxim |
|
|
Posted: Tue Sep 25, 2001 5:30 am |
-0x08 : Version number (current = 0x00000100) +0x08 : Version number (current = 0x00000101) -0x0c : PSG chip speed in Hz (e.g. 3579540). 0 if there is no PSG chip used. -0x10 : FM chip speed in Hz (e.g. 3579540). 0 if there is no FM chip used. +0x0c : PSG chip speed in Hz (e.g. 3579545). 0 if there is no PSG chip used. +0x10 : FM chip speed in Hz (e.g. 3579545). 0 if there is no FM chip used. No? Otherwise, as a said earlier, it's ok for me (byte 0x24). |
|
|
Yes... (d'oh)
Posted: Tue Sep 25, 2001 10:43 am
|
Yeah, that's what you call a brain fart.
Yes :) While it's maybe not valid to quote the speed that precisely (I very much doubt the real clock crystals are accurate to within 0.000028%), that is the figure given and used more widely and "officially", eg. in the YM2413 datasheets. BTW, Bock, remember the YM2413 datasheets PDF I uploaded at your request? It's still not linked... and it's much higher quality and smaller filesize than the existing version. Maxim |
|