collapseos/blk/286

lblnext BSET PC ORG @ 0x1b + ! ( next )
( This routine is jumped to at the end of every word. In it,
  we jump to current IP, but we also take care of increasing
  it by 2 before jumping. )
	( Before we continue: are stacks within bounds? )
    ( PS ) HL PS_ADDR LDdn,
    SP SUBHLd,
    JRC, lblofl BWR ( abortUnderflow-B285 )
    ( RS ) IX PUSH, HL POP,
    DE RS_ADDR LDdn,
    DE SUBHLd,
    JRC, lblofl BWR ( IX < RS_ADDR? abortUnderflow-B285 )
    LDA(BC), E A LDrr, BC INCd,
    LDA(BC), D A LDrr, BC INCd,
    ( continue to execute )
z80: remove layer of indirection in most "next" calls The only calls still using the stable ABI indirection are those made before the next routine is created. 2020-06-18 07:24:47 -04:00			`lblnext BSET PC ORG @ 0x1b + ! ( next )`
Copy boot.z80 to blkfs 2020-04-22 21:19:12 -04:00			`( This routine is jumped to at the end of every word. In it,`
			`we jump to current IP, but we also take care of increasing`
			`it by 2 before jumping. )`
			`( Before we continue: are stacks within bounds? )`
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. 2020-06-27 22:01:56 -04:00			`( PS ) HL PS_ADDR LDdn,`
			`SP SUBHLd,`
z80: move boot code around Bring native words together, make the next/exec/does/compiled cluster be at the beginning. Next step: bring find code into _find word. 2020-07-05 22:23:40 -04:00			`JRC, lblofl BWR ( abortUnderflow-B285 )`
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. 2020-06-27 22:01:56 -04:00			`( RS ) IX PUSH, HL POP,`
			`DE RS_ADDR LDdn,`
			`DE SUBHLd,`
z80: move boot code around Bring native words together, make the next/exec/does/compiled cluster be at the beginning. Next step: bring find code into _find word. 2020-07-05 22:23:40 -04:00			`JRC, lblofl BWR ( IX < RS_ADDR? abortUnderflow-B285 )`
z80: Use BC as IP register instead of IY It's a bit more inconvenient in terms of register protection (BC is much more generally useful than IY), but it makes tight spots such as next and execute much faster, so I think it's worth it. 2020-07-06 23:31:00 -04:00			`LDA(BC), E A LDrr, BC INCd,`
			`LDA(BC), D A LDrr, BC INCd,`
Copy boot.z80 to blkfs 2020-04-22 21:19:12 -04:00			`( continue to execute )`