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Re: A85: Have you ever seen this?
On Wed, 11 Mar 1998 21:47:03 -0500, you wrote:
>
>"This routine replaces FIND_PIXEL and was written by Jim Kuzma. It is
>functionally and operationally compatible with FIND_PIXEL; the only
>difference is that HL is returned with the "physical" address instead of
>the offset. BC and DE are preserved. Jim Kuzma took a look at the
>FIND_PIXEL routine in the ROM and can say that this is better optimized
>for plotting. It automatically handles plotting."
>
>You can contact Jim Kuzma at 104165.456@compuserve.com
>
>The function is called plotxy
<snip code>
>This shows there are better optimized routines other than those in the
>ROM. Remember I didn't write this Jim Kuzma did. He probably knows more
>about Z80 than anyone on this list.
>
>
>Mordant
>egillespie@juno.com
>erik_gillespie_1096@gwgate.kvcc.edu
there are basically two different ways you can optomize, either for
speed or size. i personally don't think that routine looks much (if
any) better for either (but i haven't really compared size in bytes or
number of clocks). i would imagine the programmers at TI usually
tried to conserve memory over increased speed. there is usually a
trade off.
-mike
mgp4007@omega.uta.edu
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