[A83] Re: Shading (OT fastcopy)
[Prev][Next][Index][Thread]
[A83] Re: Shading (OT fastcopy)
In my opinion, a better way would to use bit 1 of port 2. This will be zero
if the LCD driver is busy, and nonzero if it's ready...So you could loop:
I'm not sure if the loop overhead would be better or worse, but this would
let you wait the exact delay that's needed and no longer.
lcdbusy:
in a,(02h)
and 02h
jr z,lcdbusy
Michael Vincent
Detached Solutions - www.detacheds.com
Radical Software - www.radicalsoft.org
----- Original Message -----
From: "Joe Pemberton" <dArkSk8eR@buffbody.com>
To: <assembly-83@lists.ticalc.org>
Sent: Sunday, September 30, 2001 7:38 PM
Subject: [A83] Re: Shading (OT fastcopy)
>
> the inc hl's are there to slow down the routine for a reason. The 83(+)'s
> lcd driver isn't fast enough, and if you take out the delays, ionfastcopy
> will write to the LCD way too fast and everything will get displayed
funny.
> >
> >quick question about the ion fast copy, it has the lines:
> > inc hl ; 6 waste
> > inc hl ; 6 waste
> >
> >now, if i were to want to speed it up(because the amount of time used by
> my
> >program will take up the required amount) how would i take those out to
> >reduce the wait?
> >
> >
> >
>
> _____________________________________________
> Free email with personality! Over 200 domains!
> http://www.MyOwnEmail.com
>
>
>
Follow-Ups:
References: