Aside from low cost, the main benefit was that it happened at a cycle-specific time without any wobble. But that takes some of the fun out of it too

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Using all the Amiga special chips were good for games, but for creating demos I think the ST was much better. Seeing rasterbars in perfect sync on the Amiga wasn't so impressiveAside from low cost, the main benefit was that it happened at a cycle-specific time without any wobble. But that takes some of the fun out of it too
Nice. The extra chipset display features couldn't be used without 2.xctirad wrote:I'm absloutely sure it was. I bought my A500 in 1991 and I had A500 board with 1MB Fat Agnus inside. A friend of me bought his A500 a copule of moths later in the same shop and had A500+ motherboard inside. He later upgraded the machine to a full A500+ just by adding four missing RAM chips and replaced ROM. Perhaps there was also some missing 74xx chip near the trapdoor connector needed for further 2MB upgrade.
From memory something like this...dml wrote:From what I remember, Copper is pretty easy. Just a chain of commands and some register offsets to be written etc. At the required time it just writes the appropriate register with whatever was specified as the source. IIRC one of the command types is a conditional 'wait', which achieves the scanline sync. I think it has access to the full register set so you can do weird things with it - but really only used it for colour changes at the time (long ago now).
Aside from low cost, the main benefit was that it happened at a cycle-specific time without any wobble. But that takes some of the fun out of it too
I know but I've got nearly no bandwidth leftdml wrote:Frank, you have all those STs & Amigas kicking around and memorized HW registers - maybe its time to hit the old text editor again!
(subtle hint hint!)
There are a couple of features useful for RGB displays. Border blank and SHIRES sprites/play fields.ctirad wrote:The extra display features were not much usable even with KS2+. The productivity mode required a special monitor, it was quite slow even in two color mode and totally ignored by most of the software. For most users the only benefit of the ECS chipset was 2MB of chip RAM.
Happy accident?Frank B wrote:Yes. But only if you use a VGA style monitor. That's a bug not a feature btw!abraxxious wrote:Not quite sure why you think the Amiga can only play back at 28 khz, but it can actually play back at 56 khz (interleave mode) - higher than the STe and the Amiga's Paula sound system supports variable playback sample rate, the STe only supports a few fixed rates. This makes playing samples as instrument voices MUCH easier on the Amiga.