Difference between revisions of "84PCE:Syscalls:021D48"

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(Destroys)
(Destroys)
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=== Destroys ===
 
=== Destroys ===
* AF
+
* A

Revision as of 18:26, 4 May 2015

Synopsis

Hypothesized Official Name: chkifBCis0

Syscall Address: 021D48h

Checks if the 24-bit value in BC is 0.

Inputs

BC - value

Outputs

Z flag set if BC == 0

A holds upper byte of BC

Destroys

  • A