mirror of
https://github.com/hsoft/collapseos.git
synced 2024-12-26 05:58:05 +11:00
7359717000
chkPS, used to be only for words that pushed back to PS, but I've recently removed underflow checks from next and I forgot to add missing chkPS, calls that go with this change.
16 lines
483 B
Plaintext
16 lines
483 B
Plaintext
lblchkPS BSET ( chkPS )
|
|
( thread carefully in there: sometimes, we're in the
|
|
middle of a EXX to protect BC. BC must never be touched
|
|
here. )
|
|
EXX,
|
|
( We have the return address for this very call on the stack
|
|
and protected registers. 2- is to compensate that. )
|
|
HL PS_ADDR 2- LDdi,
|
|
SP SUBHLd,
|
|
EXX,
|
|
CNC RETc, ( PS_ADDR >= SP? good )
|
|
( continue to uflw )
|
|
lbluflw BSET ( abortUnderflow )
|
|
DE BIN( @ 0x06 ( uflw ) + LDd(i),
|
|
JR, lblexec BWR
|