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collapseos
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Mirror of CollapseOS
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collapseos/blk/304

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  1. lblchkPS BSET ( chkPS )

  2. ( Note that you only need to call this in words that push

  3.   back to PSP. If they don't, calling chkPS is redundant with

  4.   check in next )

  5.     EXX,

  6. ( We have the return address for this very call on the stack

  7.   and protected registers. 2- is to compensate that. )

  8.     HL PS_ADDR 2- LDdn,

  9.     SP SUBHLd,

  10.     EXX,

  11.     CNC RETc, ( PS_ADDR >= SP? good )

  12.     JR, lblofl BWR ( abortUnderflow-B298 )