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Bamu®
Account closed
Registered: May 2005
Posts: 1332 |
special c64 sidplayer
Is there anyone able to code a special sidplayer for c64 or a plugin for mmc64?
A tool that is able to play 6581 sids on the 8580 without (or minimal) filter differences?
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chatGPZ
Registered: Dec 2001
Posts: 11523 |
thats kinda impossible to do in a generic way |
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Bamu®
Account closed
Registered: May 2005
Posts: 1332 |
Quote: thats kinda impossible to do in a generic way
Hmm, sure? |
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chatGPZ
Registered: Dec 2001
Posts: 11523 |
yes. it would requite detailed knowledge about all and every different player - and even then will be hard to achive. even tunes that are designed to work on both chips (like some pvcf tunes for example) dont deal with the issue very well. |
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Krill
Registered: Apr 2002
Posts: 3098 |
Also the new sid has some combined waveforms the old one doesnt have, iirc. And the filters are different from each sid to another one, no way to make both sound 100% identical :D |
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TDJ
Registered: Dec 2001
Posts: 1879 |
Maybe somebody can write a player that will play sid-tunes equally bad on both chips? |
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Oswald
Registered: Apr 2002
Posts: 5127 |
one solution is to turn on ram at d400, then modify the values that was ment written to filters, according to sid model, then turn d400 back on and write sid regs. |
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Hoogo
Registered: Jun 2002
Posts: 105 |
I had some thoughts about that stuff, too. My best idea was to emulate the 6510, record every Sid-access and play that back at the beginning of the next frame. But it will take an unfunny amount of rastertime, and optimizing that emulator will take an unfunny amount of work, maybe even for nothing... |
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Hoogo
Registered: Jun 2002
Posts: 105 |
Quote: one solution is to turn on ram at d400, then modify the values that was ment written to filters, according to sid model, then turn d400 back on and write sid regs.
You would only detect the last access to any SID-Register. Some tricks with the gate-bit will not work. But it is easy to do, so it could be worth a try. |
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chatGPZ
Registered: Dec 2001
Posts: 11523 |
yep, it wont work with many players if you use that ram trick, atleast not accuratly. |
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Stryyker
Registered: Dec 2001
Posts: 469 |
Try it with Matt Gray tunes - they sound very wrong. |
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