TIP: Click on subject to list as thread! ANSI
echo: 64_talk
to: Tarragon Moon
from: Errol Smith
date: 1994-05-25 02:09:16
subject: T-Ass, Groups

TM>Hi Errol,

 TM>Sorry about the delay in returning mail, but Talisman is not receiving
 TM>64Talk as yet (It's still going through some problems with the new 
 TM>version of Xenolink) so I've had to call GeOZ to read your mail.
 
Ah cool, I've sent some netmail, hopefully you'll get that sometime.

 TM>Won't this cause problems if he tries to scroll it (I'm assuming it's a
 TM>Yscroll). Also what if he wants to have text on the first line (8
 TM>rasters) and a Logo right underneath it?
 
 I cant remember if its a yscroll or not, he STILL hasnt sent me a demo
version! I'd say the better bet is a page flipper. As for the logo's, he
doesnt change banks or into bitmap mode, its all in the one bank in text
mode. Logos must be 3 colour fonts (centauri). Obviosly he changes from
single/multicolour if necesary. I think the only registers he changes are
$d016, $d018 & $d021..

 TM>Shouldn't that be $d418? :)
 
 Yeah, I'm hopeless with register #'s (:

 TM>Is there any way to use the filter output as a sample player? (Related
 TM>to the Pulse wave player) Possible 8-bit samples, though my logic may 
 TM>be wrong.

 I don't think so, I thought the filter register only had 4 bit resolution
anyway? (damn, havent got my reference guide here (: ). You can use the
pulse wave by changing the pulse width, which has 12 bit resolution, the
wider the p.w. the 'louder' the pulse wave will be. I've tried this &
it seemed worse than $d418 with 4 bit samples.

 TM>Any REAL player (ie:one that has decent sounds) updates the waveform
 TM>output every raster call... most also change the transpose value as 
 TM>well.

 Ah, I knew they changed the waveform, but didnt realise they changed the
transposition as well.

 TM>Every raster call the new waveform and transpose value is used with the
 TM>current pitch of the sound... This particular sound will start with a
 TM>"CHK" sound (equivelent to a cymbal being hit, sortof) and
will then 
 TM>do a arpeggio between the base note, the base note + 3, and the BN +7.
 TM> This gives the effect (sortof) like playing a minor chord.

 Ah got it. I figured they'd fiddle with the frequency, but not like 3
octaves! Will have to experiment with this. Thank god for
assemblers (:

 TM>Tarragon / Menace.

I like seeing that group name on something else than witty/strobe (:

cya, Strobe/Menace

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