The aim of this repository is to reverse engineer a chinese produced GBA reproduction cartridge. The cartridge of interest was bought on Aliexpress over here.
- Find out which components are on the PCB
- Remove the SRAM/FLASH-Chips to find the pinout beneath
- Remove the COB to find the pinout beneath
- Follow the traces
- Create gerber files without the COB
- ???
- Make an own mapper to replace the COB
- ???
- Create gerber files including the own mapper
The cartridge is using a JS28F128M29EWH as a flash storage to store the game and KM68U1000ELTGI-10L as SRAM for the savegame.
- 1x JS28F128M29EWH
- 1x KM68U1000ELTGI-10L
- 1x Unknown 60 pin COB (Chip on Board)
- 1x 0603 Zero Ohm Resistor
- 1x 0603 ??? uF Capacitor
JS28F128M29EWH
| name | meaning |
|---|---|
| JS | 56-pin TSOP, 14mm x 20mm, lead-free, halogen-free, RoHS-compliant |
| 28F | Parallel NOR interface |
| 128 | 128Mbit = 16 Megabyte |
| M29EW | Embedded Flash memory (3V core, page read) |
| H | Highest block protected by VPP/WP#; uniform block |