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Doki Doki Panic - Pirate FDS port
http://forums.nesdev.com/viewtopic.php?f=9&t=18956
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Author:  krzysiobal [ Mon Jun 03, 2019 1:49 pm ]
Post subject:  Doki Doki Panic - Pirate FDS port

Another pirate port from FDS to famicom (after SMB2J, Nazo no Murasamejou and maybe many others that you can give examples).
This mapper uses non-standard bank alignment (very similar to LH-53).
I would attach the ROM but can't see anything that I can make IPS patch from.

Image Image Image Image Image

Code:
16kB PRG-RAM + 128kB PRG-ROM + 8kB CHR-ROM
PRG banking register $8000 (mask: $F000)
[....pppp] (pppp: PRG bank at $6000)
   
Mirroring register $E000 (mask: $F000)
[....m...] (m: 0=V, 1=H)

PRG mode register $F000 (mask: $F000)
[...v....] (v: 0=RAM, 1=ROM)

PRG configuration (for reads)
v 6000 6800 7000 7800  8000 8800 9000 9800  a000 a800 b000 b800  c000 c800 d000 d800  e000 e800 f000 f800
  ---- ---- ---- ----  ---- ---- ---- ----  ---- ---- ---- ----  ---- ---- ---- ----  ---- ---- ---- ----
0 RAM1 RAM1 RAM1 RAM1  ROMc ROMc ROMc ROMc  ROMd ROMd ROMd RAM0  RAM0 RAM0 RAM0 ROMe  ROMf ROMf ROMf ROMf
1 ROM# ROM# ROM# ROM#  ROMc ROMc ROMc ROMc  ROMd ROMd ROMd ROMd  ROMe ROMe ROMe ROMe  ROMf ROMf ROMf ROMf 

PRG configuration (for writes)
v 6000 6800 7000 7800  8000 8800 9000 9800  a000 a800 b000 b800  c000 c800 d000 d800  e000 e800 f000 f800
  ---- ---- ---- ----  ---- ---- ---- ----  ---- ---- ---- ----  ---- ---- ---- ----  ---- ---- ---- ----
0 RAM1 RAM1 RAM1 RAM1  -    -    -    -     -    -    -    RAM0  RAM0 RAM0 RAM0 -     -    -    -    -
1 RAM1 RAM1 RAM1 RAM1  -    -    -    -     -    -    -    RAM0  RAM0 RAM0 RAM0 -     -    -    -    -

CHR configuration:
8kB RAM

Notes:
*Those are 8kB banks (just they don't always end on 8kB boundary so 2kB granularity was needed)
*RAM0 means first 8k of RAM
*RAM1 means second 8k of RAM
*ROM# means ROM with the bank selected by register $8000
*ROMc/ROMd/ROMe/ROMf means $c/$d/$e/$f 8kB bank of the ROM

Author:  NewRisingSun [ Mon Jun 03, 2019 3:46 pm ]
Post subject:  Re: Doki Doki Panic - Pirate FDS port

This is iNES mapper 103, not yet described on the wiki. The ROM is in GoodNES 3.23b as "Doki Doki Panic (FDS Conversion).nes".

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