Nintendo 64: Doctor V64 Main Board Picture with IC description

@Nintendo64

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N64 various

 · 5 years ago

Doctor 64 main circuit board.

Info and Picture:

• 6 major IC's on Doctor board
• 2 of which are covered with black epoxy
• 1 - U11 = W9950D - Winbond - MPEG RELATED most likely
• 1 - U8 = W9925PF - Winbond - MPEG RELATED most likely
• 1 - U1 = V64CO silk screened on doctor board - epoxyed chip
• 1 - U2 = V64 silk screened on doctor board - epoxyed chip
• 1 - U9 = 424260 silk screened on doctor board - RAM of some sort I HOPE SRAM - if its RAM for the MPEG then WHERE the hell is the SRAM?? Or maybe its for both.. It LOOKS like the address lines go to the MPEG chip..
• 1 - U3 = 29EE010 silk screened on doctor board - EEPROM where bios are

Doctor 64 RAM board.

U1 from the board layout looks like it would be the processor that the bios is written for.

All the address lines from the eeprom (U3) seem to lead to U1 - But U1 has black EPOXY all over it. If anyone can determine what processor the bios code is written for please let someone know on #doctor64 on effnet.

People have been telling me its most likely a 6502 processor, I have included with this file a version of the BIOS for those that are interested in looking at it. (And don't have a doctor yet and want to start hacking - Believe me there are people that DO NOT have the doctor yet that are writing UTILS).

Doctor V64 opened.

Top view of the Doctor V64 Main Board.

Bottom view of the Doctor V64 Main Board.

edit: 29 October 2019

BlueChip sent me a picture of the Doctor V64's motherboard. He classified the main ICs and puts a label onto each chip of the Doctor V64 :)

Here is the picture