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- by Richter X at 11:09 PM EST on February 21, 2008
- Ahhhh.....yes. It feels sooooo good to hear stereo NSFs again! Thanks.
Also, the huge playlist issue is still there. Any idea what's causing it? Another issue. When you're not playing a VRC7 NSF and switch between tonesets, you can't see what toneset you're switching to.
edited 11:45 PM EST February 21, 2008
- by nensondubois at 11:13 PM EST on February 21, 2008
- Great!
- This weekend by unknownfile at 9:20 AM EST on February 22, 2008
- I will be doing work on school stuff, but if I get around to having spare time (I always do), I will try and get some MDSF crap done.
I'm just that bored.
- Battletoads by unknownfile at 5:38 PM EST on February 23, 2008
- 1) 0x25E6C = nop
2) 0x25F26 = infinite loop
3) Save ROM
4) ???
5) PROFIT
- gens getting ported to winamp by unknownfile at 1:14 PM EST on February 24, 2008
- Yeah, it's underway and such. I still have to remove a lot of code (in particular, the graphics processing) before it can become a Winamp plugin.
- in_msx in STEREO by unknownfile at 10:22 PM EST on February 24, 2008
- I have been screwing about with in_msx for a while now, and now you, too, can listen to stuff in stereo!
You can't configure the pan yet, but whatever.
Doink
(I wanted access to this at school so ya)
...
WELL HELLO THERE. IT SEEMS THAT THIS DIDN'T CHANGE.
edited 10:59 AM EST February 25, 2008
- mdsf specs, revision 1 million by unknownfile at 12:42 PM EST on February 25, 2008
- MDSF Specs revision 0
by unknownfile
INTRODUCTION TO MDSF
MDSF ("Megadrive Sound Format") is yet another PSF-based format. This time, it is aimed at replacing
the long-lived problem of logged Genesis/Megadrive music (VGM, GYM etc) which are often far from optimal,
or contain quirks that might not be present in ripped data.
MDSFs use PSF version byte 0x13 (official), and do not use the reserved section as of yet.
THE COMMON ROM SECTION
Every set has a generic ROM section present. The section is laid out thus:
4 bytes: "ROMS" ("ROM section")
4 bytes: load offset
4 bytes: load size
xx bytes: the data itself
If a Sega CD is emulated, data in this section will be written to a space for ISO data, and the Sega
CD BIOS will be written to the ROM section instead unless specified below.
INITIALIZING OTHER CPUS
To allow other CPUs on the Megadrive to run, you need to specify one of the following:
- "S68K" for Sega CD
- "SH2!" for Sega 32X
- "Z80?" for Z80-only rips
Parameters for these follow.
NOTES ON THE SEGA CD
The Sega CD ROM section will contain an ISO unless a flag is written in the header:
4 bytes "S68K"
1 byte "override flag"
If the override flag is not 0, the data in the ROM section will be written to Genesis ROM space.
NOTES ON THE SEGA 32X
Simple section. There is one byte there for expansion flags.
4 bytes "SH2!"
1 byte expansion
NOTES ON Z80 RIPS
Some sets do not require that the 68000 be in place. As a result, rips can be more optimal
by just emulating a Z80 CPU and not needing to go through initialization code, etc.
The parameters are:
4 bytes "Z80?"
2 bytes load address in Z80 memory
4 bytes initial 68K memory pointer
x bytes data
Note that by using this section, all other CPUs are halted.
Also, this might not work with all Z80 music drivers, as it is only a concept and may not be needed.
- SMPS Z80 sound code offset by unknownfile at 10:21 AM EST on March 5, 2008
- Write the sound code to 0x1C0A, receive sound. Hopefully.
- regarding the above by unknownfile at 8:53 PM EST on March 5, 2008
- Confirmed this method to work with:
- Battletoads
- Sonic 3
- Sonic Crackers (and Knuckles' Chaotix)
- Phantasy Star 3
- Phantasy Star 4
Still have more games to test...
- by Richter X at 10:38 PM EST on March 5, 2008
- Kickass! Can't wait until Snatcher can be ripped.
*Thumbsup!*
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