Bung Game Doctor SF 7 Kicad Files

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Modman
Posts: 9
Joined: Thu Nov 16, 2023 9:16 pm

Bung Game Doctor SF 7 Kicad Files

Post by Modman »

Hey all,

Back again with the Kicad files for the Bung Game Doctor SF 7. These are verified accurate and functional. Enjoy.
MainBoard.7z
(423.97 KiB) Downloaded 19 times
Internal System RAM.7z
(69.46 KiB) Downloaded 18 times
RAM Extension Board.7z
(56.19 KiB) Downloaded 14 times
SNES Attachment PCB.7z
(18.21 KiB) Downloaded 26 times
Attachments
DS7A-2.png
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TmEE
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Location: Norway (50 and 60Hz compatible :P)
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Re: Bung Game Doctor SF 7 Kicad Files

Post by TmEE »

awww, "2rd" is fixed lol (or at least my SF7 has that typo/misunderstanding on its PCB)
Modman
Posts: 9
Joined: Thu Nov 16, 2023 9:16 pm

Re: Bung Game Doctor SF 7 Kicad Files

Post by Modman »

TmEE wrote: Fri Oct 25, 2024 12:46 pm awww, "2rd" is fixed lol (or at least my SF7 has that typo/misunderstanding on its PCB)
Lol, I am pretty sure it is wrong on my original board too; maybe I should change it back?
coolchecker
Posts: 2
Joined: Sun Oct 27, 2024 11:17 pm

Re: Bung Game Doctor SF 7 Kicad Files

Post by coolchecker »

Amazing. I'm very interested in Game Doctor 7. Although it's device before 30 years ago but i like it. :o

I just implemented sending/receiving data from PC to Game Doctor 6/7 via parallel port.

The core chip (named "GDSF 701",160 pins) can clone ? have you tried?
Attachments
GD7
GD7
send data from PC
send data from PC
Modman
Posts: 9
Joined: Thu Nov 16, 2023 9:16 pm

Re: Bung Game Doctor SF 7 Kicad Files

Post by Modman »

Hi, that’s pretty cool, I hadn’t seen the pc communication software before.

I am capable of designing a clone board and writing the verilog necessary to replicate the GDSF7, but the fastest way to make that happen would be to reverse engineer the GDSF7 bios and document all address ranges it uses on the SNES and for what purpose, as well as any reads/writes it performs to enable/disable functions. With that info, it wouldn’t take long to clone the asic.

I am unfortunately not experienced at assembly code and the snes architecture, so I would need someone else to do that part
coolchecker
Posts: 2
Joined: Sun Oct 27, 2024 11:17 pm

Re: Bung Game Doctor SF 7 Kicad Files

Post by coolchecker »

Modman wrote: Mon Oct 28, 2024 5:53 am Hi, that’s pretty cool, I hadn’t seen the pc communication software before.

I am capable of designing a clone board and writing the verilog necessary to replicate the GDSF7, but the fastest way to make that happen would be to reverse engineer the GDSF7 bios and document all address ranges it uses on the SNES and for what purpose, as well as any reads/writes it performs to enable/disable functions. With that info, it wouldn’t take long to clone the asic.

I am unfortunately not experienced at assembly code and the snes architecture, so I would need someone else to do that part

It was also very difficult for me.

I bought a non-working GDSF7 mainboard, less than $5, just need the ASIC. The rest parts use new, they are easy to buy and very cheap. Now i will try to recover this device according to the PCB you shared. I hope to witness the miracle. :mrgreen: :mrgreen: :mrgreen:
Modman
Posts: 9
Joined: Thu Nov 16, 2023 9:16 pm

Re: Bung Game Doctor SF 7 Kicad Files

Post by Modman »

Oh, yes, if you were able to take the asic from the non working board, and you get the rest of the components new, it will work! Assuming the asic isn’t broken. I have transplanted all components to my new pcb and it works perfectly.
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