Difference between revisions of "84PCE:Syscalls:021D50"
From WikiTI
| Line 9: | Line 9: | ||
=== Inputs === | === Inputs === | ||
| − | HL | + | * HL: value |
=== Outputs === | === Outputs === | ||
| − | Z flag set if HL == 0 | + | * Z flag set if HL == 0 |
| − | + | * A holds upper byte of HL | |
| − | A holds upper byte of HL | + | |
=== Destroys === | === Destroys === | ||
* AF | * AF | ||
Revision as of 11:20, 26 May 2015
Contents
Synopsis
Hypothesized Official Name: ChkHLis0
Syscall Address: 021D50h
Checks if the 24-bit value in HL is 0.
Inputs
- HL: value
Outputs
- Z flag set if HL == 0
- A holds upper byte of HL
Destroys
- AF
