[WIP] Sdcc4.2.0

[basxto]

4.1.0

Bank           Range             Size   Used   Used%  Free   Free% 
----------     ----------------  -----  -----  -----  -----  -----
ROM            0x0000 -> 0x3FFF  16384  15905    97%    479     2% |.###########################|
ROM_0          0x4000 -> 0x7FFF  16384   1473     8%  14911    91% |##-.........................|
WRAM           0xC000 -> 0xCFFF   4096    190     4%   3906    95% |.--.........................|

4.2.0 (soft freeze;r12975) (old calling convention for handwritten asm 1824d08)

Bank           Range             Size   Used   Used%  Free   Free% 
----------     ----------------  -----  -----  -----  -----  -----
ROM            0x0000 -> 0x3FFF  16384  15905    97%    479     2% |.###########################|
ROM_0          0x4000 -> 0x7FFF  16384   1043     6%  15341    93% |#-..........................|
WRAM           0xC000 -> 0xCFFF   4096    190     4%   3906    95% |.--.........................|

4.2.0 (soft freeze;r12975) (new calling convention for handwritten asm 1824d08)

Bank           Range             Size   Used   Used%  Free   Free% 
----------     ----------------  -----  -----  -----  -----  -----
ROM            0x0000 -> 0x3FFF  16384  15905    97%    479     2% |.###########################|
ROM_0          0x4000 -> 0x7FFF  16384    871     5%  15513    94% |#-..........................|
WRAM           0xC000 -> 0xCFFF   4096    186     4%   3910    95% |.--.........................|

^ for this I modified gbLogUInt8 and gbLogUInt16, hopefully correct since I didn’t check if they still work.
I changed the calling convention of memoryCopy from three variables to one variable and two parameters.
I also changed the loop of memoryCopy to run faster, dec already sets the zero bit. It’s one byte more without that.

[basxto]

After some more manual optimization:

Bank           Range             Size   Used   Used%  Free   Free% 
----------     ----------------  -----  -----  -----  -----  -----
ROM            0x0000 -> 0x3FFF  16384  15900    97%    484     2% |.###########################|
ROM_0          0x4000 -> 0x7FFF  16384    860     5%  15524    94% |#-..........................|
WRAM           0xC000 -> 0xCFFF   4096    186     4%   3910    95% |.--.........................|