83Plus:BCALLs:4F4E

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Synopsis

Unofficial Name: CheckLinkLines

BCALL Address: 4F4E

Checks the link port data lines to see if they match the value in A.

Inputs

  • A: value to check against (mask out bits 2-7)

Outputs

  • Z set if link port is same value as in A

Destroys

  • All

Comments

This is a pretty dumb entry point. I suppose it could be checking for a stable link. The OS link activity hook uses this.

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