Difference between revisions of "84PCE:Syscalls:021D7C"
From WikiTI
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| − | [[Category:84PCE:Syscalls:By Name| | + | [[Category:84PCE:Syscalls:By Name|SignExtendDE]] |
| − | [[Category:84PCE:Syscalls:By Address|021D7C - | + | [[Category:84PCE:Syscalls:By Address|021D7C - SignExtendDE]] |
== Synopsis == | == Synopsis == | ||
'''Hypothesized Official Name:''' SignExtendDE_broken | '''Hypothesized Official Name:''' SignExtendDE_broken | ||
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'''Syscall Address:''' 021D7Ch | '''Syscall Address:''' 021D7Ch | ||
| − | This is | + | This was originally a broken call, and still is in OS 5.0.0.0089 (and others, perchance?) But after sending in information, TI did an amazing job and fixed this call. It basically performs a sign extension on a 16bit HL to 24bit HL. It is known to work in OS 5.1.0.0110. |
| − | + | === Inputs === | |
| + | HL - 16-bit signed value | ||
| − | + | === Outputs === | |
| + | HL - 24-bit signed value | ||
| − | + | === Destroys === | |
| − | + | * HLU | |
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Revision as of 12:57, 4 September 2015
Contents
Synopsis
Hypothesized Official Name: SignExtendDE_broken
Syscall Address: 021D7Ch
This was originally a broken call, and still is in OS 5.0.0.0089 (and others, perchance?) But after sending in information, TI did an amazing job and fixed this call. It basically performs a sign extension on a 16bit HL to 24bit HL. It is known to work in OS 5.1.0.0110.
Inputs
HL - 16-bit signed value
Outputs
HL - 24-bit signed value
Destroys
- HLU
