collapseos/blk/299
Virgil Dupras da371451cc Replace INITIAL_SP with PS_ADDR conf
Now I struggle to remember why I ever did things they way I did.
There must have been a reason...
2020-05-11 21:08:24 -04:00

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PC ORG @ 0x1e + ! ( chkPS )
HL PUSHqq,
( We have the return address for this very call on the stack
and protected registers. 4 - is to compensate that. )
HL PS_ADDR 4 - LDddnn,
SP SUBHLss,
HL POPqq,
CNC RETcc, ( PS_ADDR >= SP? good )
JR, L2 BWR ( abortUnderflow-B298 )