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Did u one better m8 !

just changed the VU routine so it shows green/yellow/red for each channel...

sources for jarre/formx included....

/Simon

Cheers Steve....

glad u like the "VU" meters... proves that the routine can do more than play music....

how about DOS ? are there any areas of memory that are dodgy or a big "no no" ???

(i'm thinking DEMO here)..... hows about SG24 support ?

is the irq vector at $10c like the coco ?

/Simon

Hey Steve.... Sweevo is fine..... had a bit of a piddle about this afternoon (talked with Sock Master last night about an idea).... so now i have come up with a couple of VU meters incorporated into the routine..... (these use text mode block gfx).... i have no idea if the "normal" screen on a drago...

Hehe...

sweevo is for "the music box" not "the music studio".....

it sounds allright in music studio on beepola, but you probably need to halve the pattern tempos for it to sound allright on the coco/dragon player....

/Simon

I made some more changes: (1) Minor speed optimization. (2) Added extra code to make the program DOS compatible. (3) No longer uses the S register for writing to $FF20 (this modification was suggested by John). (4) Removed the "anda #$C0" before writing to $FF20 (this modification was suggested by ...

This would be the same engine with a couple of new speed tweaks:

https://www.youtube.com/watch?v=U68Ak1MJa2g

https://www.youtube.com/watch?v=MPp24XyMB30

theres roughly a 12% speed increase in the "inner loop".....

/Simon

John Kowalski converted the z80 code for me.... literally on a napkin.... i assembled it and made it play, sounded well skanky..... then we set about debugging it over 2 days... i kept sending him .wav files of the players output and he tweaked the code a bit more until we got it right..... very coo...

zephyr wrote:Changed the code so that the music length counter was no longer needed. Did some more code size/speed optimization.

YOINK......

definately gonna use the new code in my demo.....

COOL ! I knew I wasn't flogging a dead horse with the 1bit routine for the coco / dragon.... I actually started off doing my own conversion af a c64 6502 1bit routine to 6809, but then i hooked up with John Kowalski to produce the direct z80 port.... (the 6502 code had been ported from z80, so my co...

@zephyr

another thing u need 2 watch out for when modifying the code would be that it runs DP at $3f......

alot of pointers/counters get modified (self modding code).... so stray beyond the 256 byte boundry and nasty things happen

/Simon