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collapseos/blk/494
Virgil Dupras b2b556911f trs80: implement AT-XY
Also, I've run VE on the TRS-80 for the first time! It doesn't work
well though. Screen is mostly blank all the time.

I removed instructions from the recipe which became obsolete when
Collapse OS became 100% bootstrapped. Also, I've updated instructions
to change the NL override which is necessary for blkup to work.
2020-06-07 11:14:57 -04:00

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: LINES 24 ; : COLS 80 ;
CODE BYE
HL 0 LDddnn,
A 0x16 LDrn, ( @EXIT )
0x28 RSTn,
CODE @DCSTAT ( drv -- f )
BC POPqq,
chkPS,
A 0x28 LDrn, ( @DCSTAT )
0x28 RSTn,
PUSHZ,
;CODE