how to use pic12f675

[TheBortot]

Hi, after programming with the apropriate hex file, what pins of the pic12f675 do you have to use in order to ressurect cps2 and where to plug it?
The datasheet says:

1	Vdd - Positive Power Supply
2	GP5/T1CKI/OSC1/CLKIN
3	GP4/AN3/TIG/OSC2/CLKOUT
4	GP3/MCLR/Vpp
5	GP2/AN2/T0CKI/INT/COUT
6	GP1/AN1/CIN-/ICSPCLK
7	GP0/AN0/CIN+/ICSPDAT
8	Vss - Ground

 

[Frank_fjs]

All the info is here:

https://github.com/ajefr/CPS2_Modchip

 

[TheBortot]

well, the pcb was green,revision 6, but the game showed ``marvel vs capcom 980123 USA`` when booting. Programmed the pic with the usa version ``mvscu`` like the tutorial said, but nothing. The eproms show signs of being replaced, no stickers at all, but the sound roms have stickers ``MVCH`` --> suggest a hispanic rom, but why the hell it booted ``marvel vs capcom 980123 USA`` ?
The mask roms are `` mvc`` from 11M to 20M, so they are original ones.

 

[TheBortot]

programming a hispanic one (``mvsch'') didnt work too. All i get is a green screen.
@Frank_fjs

 

[TheBortot]

Problem solved. Something crazy went on:

i compared the 04 eprom to mame roms to see what region it was and nothing...
compared the decripted rom and... yes, it was it. So, i dunno why, the old owner left the battery on the pcb.