collapseos/blk/319

CODE * EXX, ( protect BC )
    ( DE * BC -> DE (high) and HL (low) )
    DE POP, BC POP, chkPS,
    HL 0 LDdn,
    A 0x10 LDri,
    BEGIN,
        HL ADDHLd,
        E RL, D RL,
        IFC,
            BC ADDHLd,
            IFC, DE INCd, THEN,
        THEN,
        A DECr,
    JRNZ, AGAIN,
    HL 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 * EXX, ( protect BC )`
			`( DE * BC -> DE (high) and HL (low) )`
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			`DE POP, BC POP, chkPS,`
			`HL 0 LDdn,`
			`A 0x10 LDri,`
z80: protect or avoid BC wherever it's used For the IY->BC move, of course. 2020-07-06 13:12:17 +10:00			`BEGIN,`
			`HL ADDHLd,`
			`E RL, D RL,`
			`IFC,`
			`BC ADDHLd,`
			`IFC, DE INCd, THEN,`
			`THEN,`
			`A DECr,`
			`JRNZ, AGAIN,`
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 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`