Search found 395 matches

by Xeron
Mon Mar 09, 2009 5:19 pm
Forum: 6502 assembly coding
Topic: Cycle and video timings
Replies: 6
Views: 13410

OK, thanks.

Anyone know the other answers?
by Xeron
Sun Mar 08, 2009 11:12 pm
Forum: 6502 assembly coding
Topic: Cycle and video timings
Replies: 6
Views: 13410

Cycle and video timings

I have some questions about timings in the Oric-1 and Atmos. Where there NTSC models ever released, or just PAL? When you set 60Hz mode, i presume thats a 60Hz PAL signal, rather than NTSC? How many CPU cycles are executed per raster line? Of the 312 PAL raster lines, on which line does the Oric sta...
by Xeron
Sun Mar 08, 2009 10:12 pm
Forum: 6502 assembly coding
Topic: ROM disassembly
Replies: 11
Views: 23879

Great, thanks!

My e-mail address is pete _at_ petergordon _dot_ org _dot_ uk
by Xeron
Sun Mar 08, 2009 9:36 pm
Forum: General Discussion
Topic: Reminder: #oric IRC channel on ircnet
Replies: 2
Views: 4898

I've added it to the channels I autoconnect to :-)
by Xeron
Sat Mar 07, 2009 5:22 pm
Forum: 6502 assembly coding
Topic: ROM disassembly
Replies: 11
Views: 23879

ROM disassembly

Hi

Is there a commented disassembly of the Oric Atmos (or Oric-1) ROM available online? Or do I have to try and find a copy of the Advanced User Guide?

Cheers,
Pete