Commit Graph

19 Commits

Author SHA1 Message Date
Doug Masten
ecb6bc5106 Tiny speed improvement to 6809 LZSA depackers
Same space used but improved match length code by 1 cycle for M6809. On H6309 the clock cycles are the same.
2020-07-03 01:29:02 -05:00
Doug Masten
31d5dc2419 Slight speed and space improvement to nibble processing in 6809 LZSA2 depackers 2020-06-30 14:05:59 -05:00
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
e397428c1f Remove trailing whitespaces in 6809 LZSA2 depacker 2020-06-27 02:02:33 -05:00
Doug Masten
f72133f4cf Move instruction before branch to save one byte in 6809 LZSA2 depacker 2020-06-26 16:48:58 -05:00
Doug Masten
56ba563794 One byte saving for setting reg A to $FF in 6809 LZSA2 depacker 2020-06-26 15:59:24 -05:00
Doug Masten
c0f09db364 Delay clearing high part of literals count until we really have to in 6809 LZSA2 depacker 2020-06-26 15:56:28 -05:00
Doug Masten
99db30a732 Optimize handling of 9 bits offset in 6809 LZSA2 depacker 2020-06-26 15:18:53 -05:00
Doug Masten
061ca99838 Optimize handling of token's Z flag bit in 6809 LZSA2 depacker 2020-06-26 14:52:09 -05:00
Doug Masten
7b96368469 Optimize match offset code in 6809 LZSA2 depacker 2020-06-26 14:42:36 -05:00
Doug Masten
e9540b2e3d Remove unnecessary "ADDB #$18" as register B will always have this value from 6809 LZSA2 depacker 2020-06-24 00:49:09 -05:00
Doug Masten
7f0316b81c Update code byte counts for 6809 LZSA depackers 2020-06-20 12:45:51 -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
Emmanuel Marty
f920485899
-3 bytes for 6809 LZSA2 depacker, slightly faster 2020-06-19 20:08:09 +02:00
Emmanuel Marty
f198431a71
-2 bytes for 6809 LZSA2 depacker, speed unchanged 2020-06-19 18:26:25 +02:00
Emmanuel Marty
f80706ff7e
-5 bytes and faster 6809 LZSA2 depacker 2020-06-19 12:50:10 +02:00
Emmanuel Marty
e253d3e628
-1 byte for 6809 LZSA2 depacker 2020-06-19 08:57:01 +02:00
Emmanuel Marty
26bf944d9f
Add 6809 depacker for LZSA2 2020-06-18 17:48:08 +02:00