84PCE:Syscalls:021D7C
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Revision as of 12:58, 4 September 2015 by MateoConLechuga (Talk | contribs)
Contents
Synopsis
Hypothesized Official Name: SignExtendDE
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
DE - 16-bit signed value
Outputs
DE - 24-bit signed value
Destroys
- DEU
