mirror of https://github.com/hsoft/collapseos.git
16 lines
483 B
Plaintext
16 lines
483 B
Plaintext
lbluflw BSET ( abortUnderflow )
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DE BIN( @ 0x06 ( uflw ) + LDd(i),
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JR, lblexec BWR
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lblchkPS BSET ( chkPS )
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( Note that you only need to call this in words that push
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back to PSP. If they don't, calling chkPS is redundant with
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check in next )
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EXX,
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( We have the return address for this very call on the stack
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and protected registers. 2- is to compensate that. )
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HL PS_ADDR 2- LDdi,
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SP SUBHLd,
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EXX,
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CNC RETc, ( PS_ADDR >= SP? good )
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JR, lbluflw BWR
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