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KiCADKicad
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Radofin 1392 cartridge for 27128 ROM
Supports 8 games in a single cartridge of size 2Kbytes or 4 games of 4Kbytes.
Use only 2K or 4K roms in a single ROM.
6 pin ic is actually a 3 pin DIP switch. For 4k ROM cartridge you can use 2 pin DIP switch.
Kicad files here: https://github.com/yo5ptd/radofincart
Selection Logic - R1..3 are pull ups, DIP switch will ground them.
I use PGM as is active high according to the MBM27128 datasheet, same for CE at pin 16 in the 2626PVI datasheet.
The "untested" text is not valid. In the meantime it was tested with 8x2k images, and it works.
Radofin 1392 cartridge for 27128 ROM
*PCBWay community is a sharing platform. We are not responsible for any design issues and parameter issues (board thickness, surface finish, etc.) you choose.
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