[A83] Re: Point of making your own lcd_busy?

To: assembly-83@lists.ticalc.org
Subject: [A83] Re: Point of making your own lcd_busy?
From: Tijl Coosemans <tijl@ulyssis.org>
Date: Sat, 1 Feb 2003 14:12:17 +0100
In-Reply-To: <OE41b6GYBp80SiEmAFx00003f57@hotmail.com>
References: <OE41b6GYBp80SiEmAFx00003f57@hotmail.com>
Reply-To: assembly-83@lists.ticalc.org

On Fri, 31 Jan 2003 16:35:48 -0600, Jeff wrote:

> What is the point of wasting 5 bytes of memory, in a direct LCD
> program, by writing your own lcd_busy subroutine, when it is already
> in ROM?  TI has documented it's own ROM call _lcd_busy, but if that's
> not good enough for us, we can call $07DE and it is exactly the same
> thing, cycle per cycle, byte per byte, as: push af, inc hl, dec hl,
> pop af, ret...

not on all rom versions.

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