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collapseos
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Mirror of CollapseOS
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collapseos/blk/299

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  1. PC ORG @ 0x1e + ! ( chkPS )

  2.     HL PUSHqq,

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

  4.   and protected registers. 4 - is to compensate that. )

  5.     HL PS_ADDR 4 - LDddnn,

  6.     SP SUBHLss,

  7.     HL POPqq,

  8.     CNC RETcc,      ( PS_ADDR >= SP? good )

  9.     JR, L2 BWR      ( abortUnderflow-B298 )