collapseos/blk/310

CODE PICK EXX, ( protect BC )
    HL POP,
    ( x2 )
    L SLA, H RL,
    SP ADDHLd,
    C (HL) LDrr,
    HL INCd,
    B (HL) LDrr,
    ( check PS range before returning )
    EXDEHL,
    HL PS_ADDR LDdn,
    DE SUBHLd,
    IFC, EXX, lblofl @ JP, THEN,
    BC PUSH,
EXX, ( unprotect BC ) ;CODE
z80: protect or avoid BC wherever it's used For the IY->BC move, of course. 2020-07-06 13:12:17 +10:00			`CODE PICK EXX, ( protect BC )`
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			`HL POP,`
Copy boot.z80 to blkfs 2020-04-23 11:19:12 +10:00			`( x2 )`
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			`L SLA, H RL,`
			`SP ADDHLd,`
Copy boot.z80 to blkfs 2020-04-23 11:19:12 +10:00			`C (HL) LDrr,`
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			`HL INCd,`
Copy boot.z80 to blkfs 2020-04-23 11:19:12 +10:00			`B (HL) LDrr,`
			`( check PS range before returning )`
			`EXDEHL,`
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			`HL PS_ADDR LDdn,`
			`DE SUBHLd,`
z80: protect or avoid BC wherever it's used For the IY->BC move, of course. 2020-07-06 13:12:17 +10:00			`IFC, EXX, lblofl @ JP, THEN,`
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			`BC PUSH,`
z80: protect or avoid BC wherever it's used For the IY->BC move, of course. 2020-07-06 13:12:17 +10:00			`EXX, ( unprotect BC ) ;CODE`