Difference between revisions of "83:ROMCalls:40B2"
From WikiTI
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* OP1 = -OP1 | * OP1 = -OP1 | ||
* OP2 = -OP2 | * OP2 = -OP2 | ||
| − | * A = ([[83:RAM:8039|OP1) | + | * A = ([[83:RAM:8039|OP1]]) = OP1 sign byte |
* F = nc, nz if OP1 is negative, z if positive | * F = nc, nz if OP1 is negative, z if positive | ||
* BC,DE,HL preserved | * BC,DE,HL preserved | ||
Latest revision as of 09:01, 14 April 2005
Synopsis
Official Name: InvOP1SC
Call Address: 40B2
This routine calls InvOP2S and runs through InvOP1S inverting the sign of both OP1 and OP2.
Inputs
- OP1 = floating point number
- OP2 = floating point number
Outputs
- OP1 = -OP1
- OP2 = -OP2
- A = (OP1) = OP1 sign byte
- F = nc, nz if OP1 is negative, z if positive
- BC,DE,HL preserved
