Search found 174 matches
- Tue Jan 29, 2019 11:20 pm
- Forum: Dragon General
- Topic: 200E ROMs
- Replies: 11
- Views: 11325
Re: 200E ROMs
Hmmm..I think I realise what I've done. I've been using 2764s! It should be 27128s. D'oh.
- Tue Jan 29, 2019 11:09 pm
- Forum: Dragon General
- Topic: 200E ROMs
- Replies: 11
- Views: 11325
200E ROMs
I've successfully reproduced the 200E VDG daughterboard, and wanted to try it out with the 200E 'firmware'. So I've flashed IC18/IC34 and replaced it on the motherboard. I've also done IC17/IC37, but I don't think that is important unless doing an EXEC48000? For some reason, despite trying a few dif...
- Tue Jan 29, 2019 2:04 pm
- Forum: Dragon General
- Topic: MAME - Dragon 200-E
- Replies: 19
- Views: 24029
Re: MAME - Dragon 200-E
Boards arrived today. Have put one together and blown an EPROM as per the image I found either here or Simon's main site (Rom26.ic1). The results are rather different to what a real 200E displays - I presume because I have a normal D64 BASIC ROM in place. 200E_normal.jpg 200E_inverse.jpg More charac...
- Wed Jan 23, 2019 11:35 pm
- Forum: Dragon General
- Topic: MAME - Dragon 200-E
- Replies: 19
- Views: 24029
Re: MAME - Dragon 200-E
Just resurrecting this thread - and am I glad I found it!! Was about to order some PCBs to try this out, but fortunately took one last look tonight and realised that the EPROM chip enable I'd deduced from what I could see on the board was wrong. The details above make perfect sense, and look to enab...