Search found 6 matches

by poggeldi
Fri Sep 21, 2018 5:39 am
Forum: Reproduction
Topic: Problems with building Camerica Game Repro / Mapper 71
Replies: 13
Views: 15824

Re: Problems with building Camerica Game Repro / Mapper 71

Sorry for the late answer.
Yes, PIN1 is connected.
Please look at the fotos attached. Do you see anything wrong there?

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edit: oh wait... PIN1 is VPP (only for programming the chip), right? this is not connected. PIN 32 is VCC...
by poggeldi
Fri Sep 07, 2018 6:16 am
Forum: Reproduction
Topic: Problems with building Camerica Game Repro / Mapper 71
Replies: 13
Views: 15824

Re: Problems with building Camerica Game Repro / Mapper 71

I use a WINBOND W27C020 EEPROM... Never had any problems with those. But can I destroy an EEPROM by connecting something wrong? I think my first rewiring attempt was this one: Bend up pins 1, 2, 24 and 31 Solder pin 2 to hole 24 (A16) Solder pin 24 to GND (OE) Then I simply tried it without any rewi...
by poggeldi
Thu Sep 06, 2018 8:09 am
Forum: Reproduction
Topic: Problems with building Camerica Game Repro / Mapper 71
Replies: 13
Views: 15824

Re: Problems with building Camerica Game Repro / Mapper 71

krzysiobal wrote:
Should this pin be wired to PRG-A17?
Yes, connect them.
Unfortunately I still get a grey screen (nothing displayed) when I connect those 2 pins...
Any other ideas?
by poggeldi
Sun Sep 02, 2018 2:39 am
Forum: Reproduction
Topic: Problems with building Camerica Game Repro / Mapper 71
Replies: 13
Views: 15824

Re: Problems with building Camerica Game Repro / Mapper 71

Thanks for your answers! If your version uses BF9093, chech to what is wired pin14 of that chip. Yes, my version uses BF9093. Pin14 of that chip is not wired at all. Should this pin be wired to PRG-A17? PRG-A17 (PIN 30 of the EPROM) is also NOT connected to anything on the board... And is there any ...
by poggeldi
Sun Aug 26, 2018 5:41 am
Forum: Reproduction
Topic: Problems with building Camerica Game Repro / Mapper 71
Replies: 13
Views: 15824

Problems with building Camerica Game Repro / Mapper 71

Hey you NES-Gurus! :-) A friend of mine asked me to build a repro cart of the rare game "Dooly Bravo Land" (Korea only release). Nestopia gives me the following information: ________________________________ Soft-patched: No CRC: 86BE4746 SHA-1: 6AAA5521F91F101448E77C996C9802015578400C System: NES-NT...