mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-09-07 05:54:25 +00:00
17 lines
692 B
Plaintext
17 lines
692 B
Plaintext
|
This is just some more Apple II Xdraw (firmware vector drawing).
|
||
|
|
||
|
In this case I wanted to draw short lines, the value for the
|
||
|
shapetable was $04 $00. I tried various ways to point to this
|
||
|
value in a short manner, but even putting it at address $0101 (an
|
||
|
easy pointer to load into X/Y/A) didn't help with the size.
|
||
|
|
||
|
Eventually I found $0400 in ROM and point to that instead.
|
||
|
|
||
|
I really liked the effect but despite all the effort was not able
|
||
|
to get it down to the 16-byte category. If you're lucky you can
|
||
|
remove the HPOSN call to save 3 bytes, but that depends on random
|
||
|
RAM contents at boot.
|
||
|
|
||
|
So anyway, in agony after weeks I just kept it at 17 bytes and
|
||
|
submitted it as a 32-byte demo.
|