View source for 83:ROMCalls:40B2

[[Category:83:ROMCalls:By_Name:FP_Math|InvOP1SC]] [[Category:83:ROMCalls:By_Name|InvOP1SC]] [[Category:83:ROMCalls:By_Address|40B2 - InvOP1SC]]
== Synopsis ==
'''Official Name:''' InvOP1SC

'''Call Address:''' 40B2

This routine calls [[83:ROMCalls:40BA|InvOP2S]] and runs through [[83:ROMCalls:40B6|InvOP1S]] inverting the sign of both [[83:RAM:8039|OP1]] and [[83:RAM:8039|OP2]].

=== Inputs ===
* OP1 = floating point number
* OP2 = floating point number

=== Outputs ===
* OP1 = -OP1
* OP2 = -OP2
* A = ([[83:RAM:8039|OP1]]) = OP1 sign byte
* F = nc, nz if OP1 is negative, z if positive
* BC,DE,HL preserved