[A83] Re: time between lcd writes
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[A83] Re: time between lcd writes
This should work:
LCDBusy:
push af
LCDStillBusy:
in a, (02h)
and 02h
jr z LCDStillBusy
pop af
ret
On Sunday, February 2, 2003, at 10:50 PM, Joe Pemberton wrote:
> What port, and what value does it get when the LCD is ready?
>
> ----- Original Message -----
> From: Brandon Sterner
> To: assembly-83@lists.ticalc.org
> Sent: Sunday, February 02, 2003 6:30 PM
> Subject: [A83] Re: time between lcd writes
>
> The romcall does not delay x many clocks, it simply reads a port until
> it indicates the LCD isn't busy. You can get a rough estimate but I
> would guess it varies slightly from machine to machine and depending
> on batteries and other variables.
>
> brandon sterner
>
> ----- Original Message -----
> From: Joe Pemberton
> To: assembly-83@lists.ticalc.org
> Sent: Sunday, February 02, 2003 8:35 PM
> Subject: [A83] time between lcd writes
>
> Exactly how many clocks do the 83, 83+ and 83 SE require between
> writes to the LCD ports?
>
> - - Joe
>
References: