nesdev.org

blargg wrote:If you download the source, you'll see at the beginning: "processor p12f629"

Argh! How could I miss this? Thanks, blargg.

Edit: Hmmm ... ikari_01, would this work on a 12C508 as well?

ikari_01 wrote:Here's a PIC implementation for the SNES CIC. Key mode only, auto region fallback (requires user reset)

Great! What type of PIC would I need to try this out?

blargg wrote:Finally, I finished a one-minute near-CD-quality demo for the SNES (2.9 MB download): blargg_near_cd_quality.7z (mirror).

Just tried this on the PowerPak. WOW! Simply amazing. Great work, blargg.

The SRAM size byte of BS Zelda AST's internal header is actually set to 256 Kbits. So I played through all 4 weeks recently using a 256 Kbit (32 KB) SRM file. Worked like a charm.

Does anyone know why "Chibi Maruko Chan - Mezase Minami no Island" won't run on a PAL SNES? It's not a PowerPak-specific problem, because it won't run from my ToToTek cart either. So my guess is that it either uses some extra chip, or does a software region check. This game appears to be ...

Not really. The best idea would be to test the cart on a NTSC console to see if it works at all.

I changed it to $20 to fix it as I knew Super Castlevania was the same cartridge type (LoROM, 8M) and checked out if it loaded, it did. Yes, $20 is indeed better. I just checked on Super Probotector (European title of Contra 3), which goes with that value as well. :) BTW, I found another game where...

Apparently, I've got NTSC Donkey Kong Country, which does not run with either CIC disabled nor enabled (on PAL SNES). Is that game known to have some additional region checks, or could it be that the cart is borked? The latter is likely. DKC should run fine on a lockout-modded PAL SNES, at least in...

AFAIK, there are no other glitches apart from the intro.

Let me guess - you're playing the game on a (modded) PAL SNES, right? This is "normal" insofar as it also happens with the original, untranslated retail version of Star Ocean. The only chance to avoid this glitch is to play it on a genuine NTSC SNES.

So for the record, just change byte $7FD5 (on a headerless ROM) from $53 to $30, which trims the ROM name and thus fixes the mapper.

ROM says the mapper is ExLoROM (MAP32) but it is actually just plain LoROM (30). This is simply because as in Contra 3, the name extends into the mapper field. It says THE DUEL: TEST DRIVE 2, which is 22 bytes instead of the 21 bytes reserved for the game title. And ASCII "2" equals $32. ;)

It's probably easier to use SNESTool or something similar than manually splitting your ROM. Just select "Split", choose your ROM and input 12 Mbit as the output split file size.

Could it be that you confuse SNES /OE with /CE? There are many docs out there on the net in which these two are mixed up.

Your "corrected" schematic is horribly confusing. Go with the schematic kyuusaku posted (and I quoted) earlier. That'll work.

Take a look at kyuusaku's diagram: http://img11.imageshack.us/img11/9701/245.th.jpg See, you wire SNES A0 to pin 2 of the 139 and then SNES A1 to EPROM A0 SNES A2 to EPROM A1 ... SNES A20 to EPROM A19 SNES A21 to EPROM A20 and leave SNES A22 unconnected. Don't ground the 139's pin 3, but instead wir...