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Basic SID-Play V0.1 [2021] |
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Released by :
XTRO
Release Date :
14 November 2021
Type :
C64 Basic Demo
Videosystem: PAL only
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Credits :
SIDs used in this release :
Download :
Look for downloads on external sites:
Pokefinder.org
User Comment
Submitted by XTRO on 14 November 2021
User Comment
Submitted by XTRO on 14 November 2021
iAN: Thanks, thats seems much better, I'll give it a try :)
And yes, not much use for playing SID's from Basic, but someone in the fb group c64.com (facebook.com/groups/c64com) asked about it, so I had to try if it was possible :P |
User Comment
Submitted by iAN CooG on 14 November 2021
| Actually a wait53266,128 is way better for exact vbl syncing between play calls. But really, it's just a waste of time and effort playing tunes from basic. |
User Comment
Submitted by XTRO on 14 November 2021
ws: Yes, The ::: and spaces are to try and sync the tune, so different sync for each tune, but since tunes often vary in raster-time usage during play it's hard to find the "right" delay. And I used Exomizer to pack it into a smaller filesize. But I included all files separatly on the disk too. I would like to know if there is anyway to stabilize or set the raster in basic, then this would be so much easier :)
But just poking or reading $d012 in basic doesn't do much. |
User Comment
Submitted by ws on 14 November 2021
Nice! The :::: lines act as some sort of delay?
In case anybody else wonders: the file is packed because of the tunes obviously. at first i thought it was blitzed, but is just packed. |
User Comment
Submitted by XTRO on 14 November 2021
| Walt: Thanks, I googled some how the set the A,X,Y from Basic, but didn't find any useful info, so I searched in ROM to find something useful :) |
User Comment
Submitted by Walt on 14 November 2021
Line 200 could be replaced with this to set A, X and Y to 0:
200 poke780,0:poke781,0:poke782,0
From C64 reference guide:
SAREG 030C 780 Storage for 6502 .A Register
SXREG 030D 781 Storage for 5502 .X Register
SYREG 030E 782 Storage for 6502 .Y Register |
User Comment
Submitted by XTRO on 14 November 2021
| I had to re-upload the file, 1st couldn't read all files on the disk. |
User Comment
Submitted by XTRO on 14 November 2021
| Press 1-5 to select tune, all other keys will create a ?SYNTAX ERROR due lack of raster-time in BASIC :P |
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