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collapseos/blk/283

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Copy boot.z80 to blkfs
2020-04-23 11:19:12 +10:00
H@ ORG !
z80a: make mnemonic names more uniform across assemblers Initially, I used the same letters as those used in the z80 ref docs, but it makes the different assemblers harder to use than they should. Having consistent "argtype" rules across assemblers should help.
2020-06-28 12:01:56 +10:00
0 JP, ( 00, main ) NOP, ( unused ) NOP, NOP, ( 04, BOOT )
Refer to BOOT and (uflw) by addr in stable ABI Was previously referred to by name+find, which was wasteful.
2020-06-22 01:41:10 +10:00
NOP, NOP, ( 06, uflw ) NOP, NOP, ( 08, LATEST )
Make word routines into word types Instead of having wordref point to core word routines, I made them into word 4 word types. It liberates space into the stable ABI and should make porting to other arches easier. I'm also thinking of combining word type with the namelen field for precious bytes saving, but not now...
2020-06-18 11:41:01 +10:00
NOP, NOP, NOP, NOP, NOP, NOP, NOP, ( 0a, unused )
z80: move back R* words to native words section This allows us to refer to pushRS/popRS routines by labels, allowing us to get rid of the pushRS reference in the stable ABI zone.
2020-07-05 22:15:50 +10:00
NOP, NOP, NOP, ( unused ) 0 JP, ( 14, popRS )
z80: remove remaining indirections in execute calls We now have a stable ABI that is pretty cleared up...
2020-06-18 21:50:20 +10:00
NOP, NOP, NOP, ( unused )
z80a: make mnemonic names more uniform across assemblers Initially, I used the same letters as those used in the z80 ref docs, but it makes the different assemblers harder to use than they should. Having consistent "argtype" rules across assemblers should help.
2020-06-28 12:01:56 +10:00
0 JP, ( 1a, next ) NOP, NOP, NOP, ( unused )
z80: remove remaining indirections in execute calls We now have a stable ABI that is pretty cleared up...
2020-06-18 21:50:20 +10:00
NOP, NOP, NOP, NOP, ( unused )
NOP, NOP, NOP, NOP, ( unused )
z80a: make mnemonic names more uniform across assemblers Initially, I used the same letters as those used in the z80 ref docs, but it makes the different assemblers harder to use than they should. Having consistent "argtype" rules across assemblers should help.
2020-06-28 12:01:56 +10:00
0 JP, ( RST 28 )
Extract (s) code from stable ABI zone Only its jump addr remains.
2020-07-05 22:54:22 +10:00
0 A, 0 JP, ( 2b, (s) ) NOP, ( unused )
z80a: make mnemonic names more uniform across assemblers Initially, I used the same letters as those used in the z80 ref docs, but it makes the different assemblers harder to use than they should. Having consistent "argtype" rules across assemblers should help.
2020-06-28 12:01:56 +10:00
0 JP, ( RST 30 )
z80/8086: extract 2>R code from stable ABI zone Only its jump at 0x33 remains. I've also fixed a strange offset oddity in 8086's (n) placement. It was off by 2, but strangely, it ran properly. Anyway, now it's fixed.
2020-07-05 22:03:15 +10:00
0 A, 0 JP, ( 33, 2>R ) NOP, ( unused )
z80a: make mnemonic names more uniform across assemblers Initially, I used the same letters as those used in the z80 ref docs, but it makes the different assemblers harder to use than they should. Having consistent "argtype" rules across assemblers should help.
2020-06-28 12:01:56 +10:00
0 JP, ( RST 38 )
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