Sorry haven't gotten to mess with this until now.
I'm a newbie with all this so not sure what you mean by the outputs being high? Do you have any link on explaining how to test that with a Multimeter?
Thanks!
- Hubz
Search found 19 matches
- Thu May 08, 2014 7:37 pm
- Forum: Reproduction
- Topic: Reproducing Portopia
- Replies: 26
- Views: 11491
- Tue May 06, 2014 8:32 pm
- Forum: Reproduction
- Topic: Reproducing Portopia
- Replies: 26
- Views: 11491
Re: Reproducing Portopia
No go unfortunately... I didn't have pin 22 to GND but do now and still nothing. Has anybody made a UNROM Portopia by chance?
Thanks,
- Hubz
Thanks,
- Hubz
- Mon May 05, 2014 7:25 pm
- Forum: Reproduction
- Topic: Reproducing Portopia
- Replies: 26
- Views: 11491
Re: Reproducing Portopia
Hmmm no smear of color just a solid screen. I"m using a 27c512 EEPROM but I have mirrored it up to 64kb for both PRG and CHR on a California Games PCB. I didn't think it would need rewiring since it is a 28 pin EEPROM but maybe I am wrong. I went ahead and took out the CHRRAM and added the CHR ...
- Sun May 04, 2014 4:18 pm
- Forum: Reproduction
- Topic: Reproducing Portopia
- Replies: 26
- Views: 11491
Re: Reproducing Portopia
Hi, I stumbled upon this thread trying to make this game. I've created the rom from your fix and burnt it and put it in an UNROM board but it doesn't work. I'm guessing this is due to the CHR-RAM? But all UNROM boards have this so is it okay to just take that chip out and put in the CHR data from th...