Very cool. Haven't used Proteus since back in the early 90s, I think it was a DOS version, the autorouter was pretty useless back then. It's a shame the DMA transfer wasn't used much on the C64, and the REU never really took off, back in the day I think the only use of the REU I ever saw was pirates using it to copy floppies, as in loading a full disk into a REU then writing it to multiple drives, multiple times to save time duplicating disks. That last board looks like it could use a few handfuls of 100nF decoupling caps 😁Anyway, love your total overkill project and I think it's great you try to stick to components that were available back then. Cheers, Jake
I haven't shown the audio board for a while, it's so large and heavy I don't normally plug it into the backplane. :) Now that one really does have a noticeable weight of caps in it. :)
Cool stuff. My conclusion after much Amiga hw contemplation is that it should have had a (double)linebuffer - as should anything whatever the display tech they used. You could then scale the output independently of the internal creation; if you had asked the OCS for 1280x1024 it would have pumped out pixels 2 or 4 times (you might scale your buffer to max possible output?) in a row to fill in for the required resolution and then repeat the same line 4 times. Then as you got to AGA or AAA you would simply be able to match more resolutions 1:1 with what you can fetch. That is my 20:20 hindsight anyway :-) (i.e. a display is defined by two different "resolutions")
ooh a new video format !
Amazing work!
Very cool. Haven't used Proteus since back in the early 90s, I think it was a DOS version, the autorouter was pretty useless back then. It's a shame the DMA transfer wasn't used much on the C64, and the REU never really took off, back in the day I think the only use of the REU I ever saw was pirates using it to copy floppies, as in loading a full disk into a REU then writing it to multiple drives, multiple times to save time duplicating disks. That last board looks like it could use a few handfuls of 100nF decoupling caps 😁Anyway, love your total overkill project and I think it's great you try to stick to components that were available back then.
Cheers,
Jake
I haven't shown the audio board for a while, it's so large and heavy I don't normally plug it into the backplane. :) Now that one really does have a noticeable weight of caps in it. :)
Cool stuff. My conclusion after much Amiga hw contemplation is that it should have had a (double)linebuffer - as should anything whatever the display tech they used. You could then scale the output independently of the internal creation; if you had asked the OCS for 1280x1024 it would have pumped out pixels 2 or 4 times (you might scale your buffer to max possible output?) in a row to fill in for the required resolution and then repeat the same line 4 times. Then as you got to AGA or AAA you would simply be able to match more resolutions 1:1 with what you can fetch. That is my 20:20 hindsight anyway :-) (i.e. a display is defined by two different "resolutions")
Martin are you finnish???
No. Singaporean. Born British.