The 3DO M2 prototype controller and it’s internals

[Awbacon]

My goal at some point is to attempt to “dump” the FPGA and socketed rom and see if these can be repro’d. The PCB itself could easily be repro’d in Eagle and a fresh run of controllers made.

otherwise it’s just a fun look at what’s inside one of these things, as I’d never seen anyone else open one up before

 

[supersega]

Dumping that FPGA may not be impossible, they seem to have a readback function enabled within them https://www.xilinx.com/support/documentation/application_notes/xapp015.pdf

Any markings underneath the sticker on the ROM?

 

[Trimesh]

All you need to do is copy that little serial PROM - there is no non-volatile memory in the FPGA, all the config is held in SRAM cells and downloaded on power up. The serial prom is probably going to be an XC1765.

 

[Awbacon]

All you need to do is copy that little serial PROM - there is no non-volatile memory in the FPGA, all the config is held in SRAM cells and downloaded on power up. The serial prom is probably going to be an XC1765.

yes that’s my plan to dump the rom