Commit Graph

13 Commits

Author SHA1 Message Date
Doug Masten
214e03555f Slight speed improvement in 6809 LZSA depackers
Switch instruction "tfr x,u" to "leau ,x" which is 2 clock cycles faster on M6809. On H6309 both instruction have same clock cycles.
2020-06-29 00:36:49 -05:00
Doug Masten
03692fca2c Update code byte counts for 6809 LZSA depackers 2020-06-27 02:02:33 -05:00
Doug Masten
39e11422ec Delay clearing high part of literals count until we really have to in 6809 LZSA1 depacker 2020-06-27 02:02:33 -05:00
Doug Masten
06d63de9d7 Rearrange "CLRA" instruction for slight speed optimization in 6809 LZSA depacker 2020-06-21 12:16:07 -05:00
Doug Masten
b5b8ca556a Rearrange match offset code to save 2 bytes in 6809 LZSA depacker 2020-06-21 01:09:15 -05:00
Doug Masten
7f0316b81c Update code byte counts for 6809 LZSA depackers 2020-06-20 12:45:51 -05:00
Doug Masten
e8edc3242d Restructure code to eliminate one BRA instruction in unlzsa1.s 6809 LZSA depacker 2020-06-20 12:27:31 -05:00
Doug Masten
1dd65731c4 Remove unnecessary "ADDB #$12" as B register will always have this value from 6809 LZSA depackers 2020-06-20 12:27:22 -05:00
Doug Masten
f233d552ca Remove unnecessary "TSTB" instruction from 6809 LZSA depackers 2020-06-20 12:11:35 -05:00
Emmanuel Marty
2cdeda4784
-2 bytes for 6809 LZSA1 depacker, slightly faster 2020-06-19 20:07:41 +02:00
Emmanuel Marty
c3b111cea6
-2 bytes and faster 6809 LZSA1 depacker 2020-06-19 12:49:46 +02:00
Emmanuel Marty
1d0427ecae
Make 6809 depacker for LZSA1 smaller/faster 2020-06-18 17:46:42 +02:00
Emmanuel Marty
3ce9a2b36e
Add 6809 depacker for LZSA1 2020-06-18 13:26:25 +02:00