mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-11-04 05:05:13 +00:00
449 lines
4.3 KiB
ArmAsm
449 lines
4.3 KiB
ArmAsm
; how quickly can we call this?
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; jump table, assuming size to split is in Y?
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; Autogenerate? As we want both HGR/TXT and HGR/GR versions?
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; 4 NnNnNnNnNnNnNnNnBBBBbbbbNnNnNnNnNnNnNnNnRrrrrr
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; 8 NnNnNnNnNnNnNnBBBBNnNnbbbbNnNnNnNnNnNnNnRrrrrr
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; 12 NnNnNnNnNnNnBBBBNnNnNnNnbbbbNnNnNnNnNnNnRrrrrr
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; 16 NnNnNnNnNnBBBBNnNnNnNnNnNnbbbbNnNnNnNnNnRrrrrr
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; 20 NnNnNnNnBBBBNnNnNnNnNnNnNnNnbbbbNnNnNnNnRrrrrr
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; 24 NnNnNnBBBBNnNnNnNnNnNnNnNnNnNnbbbbNnNnNnRrrrrr
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; 28 NnNnBBBBNnNnNnNnNnNnNnNnNnNnNnNnbbbbNnNnRrrrrr
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; 32 NnBBBBNnNnNnNnNnNnNnNnNnNnNnNnNnNnbbbbNnRrrrrr
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; 36 BBBBNnNnNnNnNnNnNnNnNnNnNnNnNnNnNnNnbbbbRrrrrr
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; add 23 each time?
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; 23 bytes in size?
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split_4:
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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bit LORES
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bit HIRES
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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rts
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split_8:
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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bit LORES
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nop
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nop
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bit HIRES
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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rts
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split_12:
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nop
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nop
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nop
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nop
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nop
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nop
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bit LORES
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nop
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nop
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nop
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nop
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bit HIRES
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nop
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nop
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nop
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nop
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nop
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nop
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rts
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split_16:
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nop
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nop
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nop
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nop
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nop
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bit LORES
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nop
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nop
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nop
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nop
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nop
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nop
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bit HIRES
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nop
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nop
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nop
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nop
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nop
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rts
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split_20:
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nop
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nop
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nop
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nop
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bit LORES
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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bit HIRES
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nop
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nop
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nop
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nop
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rts
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split_24:
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nop
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nop
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nop
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bit LORES
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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bit HIRES
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nop
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nop
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nop
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rts
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split_28:
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nop
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nop
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bit LORES
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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bit HIRES
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nop
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nop
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rts
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split_32:
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nop
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bit LORES
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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bit HIRES
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nop
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rts
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split_36:
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bit LORES
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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bit HIRES
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rts
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ss_multiples:
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; .byte 0,0,23,46,69,92,115,138,161,184
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.byte 184,184,161,138,115,92,69,46,23,0
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; 6 4 25+16+8+16 NNNNNNNN
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; 7 6 25+15+10+15 LNNNNNN
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; 8 8 25+14+12+14 NNNNNNN
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; 9 10 25+13+14+13 LNNNNN
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; 10 12 25+12+16+12
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; 11 14 25+11+18+11
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; 12 16 25+10+20+10
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; 13 18 25+09+22+09
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; 14 20 25+08+24+08
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; 15 22 25+07+26+07
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; 16 24 25+06+28+06
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; 17 26 25+05+30+05
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; 18 28 25+04+32+04
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; 19 30 25+03+34+03
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; 20 32 25+02+36+02
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; 21 34 25+01+38+01
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; how quickly can we call this?
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; jump table, assuming size to split is in Y?
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; Autogenerate? As we want both HGR/TXT and HGR/GR versions?
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; 4 NnNnNnNnNnNnNnNnBBBBbbbbNnNnNnNnNnNnNnNnRrrrrr
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; 8 NnNnNnNnNnNnNnBBBBNnNnbbbbNnNnNnNnNnNnNnRrrrrr
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; 12 NnNnNnNnNnNnBBBBNnNnNnNnbbbbNnNnNnNnNnNnRrrrrr
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; 16 NnNnNnNnNnBBBBNnNnNnNnNnNnbbbbNnNnNnNnNnRrrrrr
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; 20 NnNnNnNnBBBBNnNnNnNnNnNnNnNnbbbbNnNnNnNnRrrrrr
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; 24 NnNnNnBBBBNnNnNnNnNnNnNnNnNnNnbbbbNnNnNnRrrrrr
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; 28 NnNnBBBBNnNnNnNnNnNnNnNnNnNnNnNnbbbbNnNnRrrrrr
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; 32 NnBBBBNnNnNnNnNnNnNnNnNnNnNnNnNnNnbbbbNnRrrrrr
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; 36 BBBBNnNnNnNnNnNnNnNnNnNnNnNnNnNnNnNnbbbbRrrrrr
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; add 23 each time?
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; TEXT/HGR version
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; should we just SMC on the fly? That in theory would be 18*5=90*2=180 bytes
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; so maybe not that great a win
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.align $100
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; 23 bytes in size?
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tsplit_4:
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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bit SET_TEXT
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bit SET_GR
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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rts
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tsplit_8:
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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bit SET_TEXT
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nop
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nop
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bit SET_GR
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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rts
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tsplit_12:
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nop
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nop
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nop
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nop
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nop
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nop
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bit SET_TEXT
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nop
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nop
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nop
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nop
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bit SET_GR
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nop
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nop
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nop
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nop
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nop
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nop
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rts
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tsplit_16:
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nop
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nop
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nop
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nop
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nop
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bit SET_TEXT
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nop
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nop
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nop
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nop
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nop
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nop
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bit SET_GR
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nop
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nop
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nop
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nop
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nop
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rts
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tsplit_20:
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nop
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nop
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nop
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nop
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bit SET_TEXT
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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bit SET_GR
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nop
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nop
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nop
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nop
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rts
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tsplit_24:
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nop
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nop
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nop
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bit SET_TEXT
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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bit SET_GR
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nop
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nop
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nop
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rts
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tsplit_28:
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nop
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nop
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bit SET_TEXT
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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bit SET_GR
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nop
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nop
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rts
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tsplit_32:
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nop
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bit SET_TEXT
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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bit SET_GR
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nop
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rts
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tsplit_36:
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bit SET_TEXT
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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bit SET_GR
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rts
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