[A83] Re: Point of making your own lcd_busy?
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[A83] Re: Point of making your own lcd_busy?
> Van: Jeff <telepath75@hotmail.com>
>
> 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...
Use:
EX (SP),HL
EX (SP),HL
One byte small than a call and still slow more than enough, AFAIK.
Henk Poley <><
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