collapseos/arch/z80/sms/blk/613

CODE _status
    A 0b11111101 LDri, ( TH output, unselected )
    PAD_CTLPORT OUTiA,
    PAD_D1PORT INAi,
    0x3f ANDi, ( low 6 bits are good )
    H A LDrr,  ( let's store them )
( Start and A are returned when TH is selected, in bits 5 and
  4. Well get them, left-shift them and integrate them to B. )
    A 0b11011101 LDri, ( TH output, selected )
    PAD_CTLPORT OUTiA,
    PAD_D1PORT INAi,
    0b00110000 ANDi,
    A SLA, A SLA, H ORr,
    PUSHA,
;CODE
sms: Pad WIP 2020-05-16 05:41:06 +10:00			`CODE _status`
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			`A 0b11111101 LDri, ( TH output, unselected )`
			`PAD_CTLPORT OUTiA,`
			`PAD_D1PORT INAi,`
			`0x3f ANDi, ( low 6 bits are good )`
sms: don't use BC The PAD driver was broken since IP moved to BC. Oops. 2020-10-07 11:36:29 +11:00			`H A LDrr, ( let's store them )`
sms: Pad WIP 2020-05-16 05:41:06 +10:00			`( Start and A are returned when TH is selected, in bits 5 and`
			`4. Well get them, left-shift them and integrate them to B. )`
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			`A 0b11011101 LDri, ( TH output, selected )`
			`PAD_CTLPORT OUTiA,`
			`PAD_D1PORT INAi,`
			`0b00110000 ANDi,`
sms: don't use BC The PAD driver was broken since IP moved to BC. Oops. 2020-10-07 11:36:29 +11:00			`A SLA, A SLA, H ORr,`
sms: Pad WIP 2020-05-16 05:41:06 +10:00			`PUSHA,`
			`;CODE`