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Cart name
Notes for chip search:
  • Use "+" as delimeter for all fields (except "cart name", where space is used); if many values are entered, all of them must appear in the cartridge then; case is not sensitive
  • "Mapper" is the actual mapper used by this cartridge hardware (might not match the one at wiki.nesdev.com, as at the moment I was analyzing this cartridge, there was no mapper assigned to it, so I had to assign my own number for testing)
  • "Original mapper" is the mapper used by licensed version of this game (for multicarts, it refers to mapper of the inside games, so 0+2 means this cartridge can run NROM+UNROM games)
  • Order in which you put values doesn't matter (you can write 7400+74138+7400 or 7400+7400+74138 to search for a cartridge that contains at least two 7400 chips and one 74138
  • Some chips (like PAL16*8) appear in cartridges as 16V8 or 16L8, so be sure to check both posibilities
  • Same goes for memories - type 27F080 to search for 32 pin memories, 27512 for 28 pin with two chip enables or MASKROM_1M_DIP28 for 28 pin with one chip enable
  • Same goes for mappers - some examples: AX5904(MMC1), AX5202P(MMC3), PT8154BM (9112MMC3), AX5208C(VRC4), 23C3662(VRC2)
  • Good news is that you can use wildcards, so 74139+*MMC3* will search for any cartrige that has at least one 74139 and MMC3 chip in any version
Mapper#
Original mapper#
PCB marks
Tags
Chips
250 in 1
Typemulti
Mapper354
Original mapper0+2
PCB marksFAM250
Tags:
Uploaded:2018-07-31 05:01:32
Elements:
NameValue
U127F080
U26264A
U316L8
U474174
U574174
U674153
C11n
CART1FAMICOM_CART
D1
R14.7k

Chip signature:
27F080+6264A+16L8+74174+74174+74153
PCB top:

PCB bottom:
Shell top:
No photo

Shell bottom:
No photo
Screenshoots:
Extra info:
250-in-1 multicart / similar to Contra 168-in-1/100-in 1 (Mapper 015)

I found interesting multicart 250-in-1. It is quite similar to known Contra 168-in-1/100-in 1 (Mapper 015):
* consists of UNROM/NROM-256/NROM-128 games,
* some of games were hacked so that it is possible to change starting level or number lifes,
* after restart, menu shows the position at which last game was selected (probabl it is stored on $1ff and every game
was hacked so that its stack is pointing at $1fe),
* mapper is REALLY similar to mapper 15 but it reacts only to writes on $f000-ffff:

[code]
A~[1111 .... .... wMMM] D~[amPPPbcd]   Main register: $f000-$ffff (cleared on powerup & reset)
                  ||||     ||||||||
                  ||||     +||||+++---- inner PRG bank (real configuration depends on mode)
                  ||||      |+++------- outer PRG bank (PRG_A19..17)
                  ||||      +---------- mirroring (0=V, 1=H)
                  |+++----------------- mode
                  +-------------------- CHR-RAM write protection (1=enabled)

A2 A1 A0 D7 D2 D1 D0 | $6000-$7fff | $8000-$9fff | $a000-$bfff | $c000-$dfff | $e000-$ffff | comment
 *  0  0  *  b  c  * |   open bus  |   PPPbc00   |   PPPbc01   |   PPPbc10   |   PPPbc11   | NROM-256
 0  0  1  *  b  c  d |   open bus  |   PPPbcd0   |   PPPbcd1   |   PPP1110   |   PPP1111   | UNROM
 *  1  0  a  b  c  d |   open bus  |   PPPbcda   |   PPPbcda   |   PPPbcda   |   PPPbcda   | 8kB (accessing CHR data)
 *  1  1  *  b  c  d |   open bus  |   PPPbcd0   |   PPPbcd1   |   PPPbcd0   |   PPPbcd1   | NROM-128
 1  0  1  *  *  *  * |   PPPbcda   |   PPP1100   |   PPP1101   |   PPP1110   |   PPP1111   | $6000 + last 32 kB
[/code]

Pal equations:
[code]
nREGWR   = (!CPU_A14) | (!CPU_A13) | (!CPU_A12) | (CPU_nROMSEL) | (CPU_RnW);

PRG_nCE  = (CPU_nROMSEL & !REG_A2) |
           (CPU_nROMSEL & !REG_A0) |
           (!CPU_A14 & CPU_nROMSEL) |
           (!CPU_A13 & CPU_nROMSEL) |
           (CPU_nROMSEL & REG_A1) |
           (!CPU_RnW);

PRG_A13 = (CPU_A13 & !CPU_nROMSEL & !REG_A1) |
          (CPU_A13 & !REG_A1 & !REG_A2) |
          (REG_D7 & !REG_A0 & REG_A1) |
          (CPU_nROMSEL & REG_D7 & REG_A0 & !REG_A1 & REG_A2) |
          (CPU_A13 & REG_A0 & REG_A1) |
          (CPU_A13 & !REG_A0 & !REG_A1);

PRG_A14 = (CPU_A14 & !REG_A0 & !REG_A1) |
          (CPU_A14 & !CPU_nROMSEL & !REG_A1) |
          (CPU_A14 & !REG_A1 & !REG_A2) |
          (REG_D0 & REG_A1) |
          (CPU_nROMSEL & REG_D0 & REG_A0) |
          (REG_D0 & REG_A0 & !REG_A2);

PRG_A15 = (CPU_A14 & REG_A0 & !REG_A1 & !REG_A2) |
          (!CPU_nROMSEL & REG_A0 & !REG_A1 & REG_A2) |
          (REG_D1);

PRG_A16 = (CPU_A14 & REG_A0 & !REG_A1 & !REG_A2) |
          (!CPU_nROMSEL & REG_A0 & !REG_A1 & REG_A2) |
          (REG_D2);
[/code]

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