VegaPlay does VRC7

NO CARRIER (Author of VegaPlay) says that it won't work with expansion chips.
Well, I just changed a SINGLE BYTE(!) and it worked!

The ROM:
http://www.mediafire.com/?62scnosfb8b...

Only songs 1-4 are here, the rest are blank dummies. They're only for test purposes, so they're nothing special.

• Category

  Science & Technology

[darkhelmet169]

This trick won't work for tracks that use the MMC5 or FDS expansions though, since FDS files are a completely different format and MMC5 starts up with the banks set wrong. It may or may not work with VRC6, depending on the emulator. I've been making a lot of these lately to test my VRC7 support so thanks for the download.

[TomoAlien]

Well, VRC6 works if you use mapper 24 (There are two versions of this mapper, one of which has reversed registers - This one is obviously the non-swapped one).

For MMC5, you're right. It won't work without some higher-level hackery (Not surprising since how complex that mapper is).

[darkhelmet169]

Actually, MMC5 works with a little 4 line patch.

Add this to vegaplay.asm right before the ClearMemory section.

SetMMC5: lda #$ff sta $5117 lda #$00 sta $5100 ;set mmc5 to 32k PRG bankswitch mode, last bank

Here's some Vegaplay compiled NSFs with special chips.

dl.dropbox.com/u/26864173/vega­play%20special%20chip.zip

(some of these don't display anything; the display routines are commented out because it trashes some RAM the NSF is using.)