Difference between revisions of "83Plus:BCALLs:4063"
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| − | [[Category:83Plus:BCALLs:By Name: | + | [[Category:83Plus:BCALLs:By Name:FP_Math|InvSub]] [[Category:83Plus:BCALLs:By Name|InvSub]] [[Category:83Plus:BCALLs:By Address|4063 - InvSub]] |
== Synopsis == | == Synopsis == | ||
'''Official Name:''' InvSub | '''Official Name:''' InvSub | ||
| Line 5: | Line 5: | ||
'''BCALL Address:''' 4063 | '''BCALL Address:''' 4063 | ||
| − | Computes the floating point subtraction | + | Computes the floating point subtraction [[83Plus:RAM:8483|OP2]]-[[83Plus:RAM:8478|OP1]]. |
=== Inputs === | === Inputs === | ||
| − | * | + | * OP1 = floating point number |
| − | * | + | * OP2 = floating point number |
=== Outputs === | === Outputs === | ||
| − | * | + | * OP1 = OP2-OP1 |
=== Registers Destroyed === | === Registers Destroyed === | ||
| Line 21: | Line 21: | ||
== Example == | == Example == | ||
| − | Suppose | + | <nowiki>Suppose OP1=00h,80h,12h,00h,... |
| − | And | + | And OP2=00h,80h,10h,00h,... |
| − | After B_CALL InvSub, | + | After B_CALL InvSub, OP1=80h,7Fh,20h,00h,... |
| − | Suppose | + | Suppose OP1=00h,80h,10h,00h,... |
| − | And | + | And OP2=00h,80h,12h,00h,... |
| − | After B_CALL InvSub, | + | After B_CALL InvSub, OP1=00h,7Fh,20h,00h,...</nowiki> |
Latest revision as of 10:46, 20 May 2005
Synopsis
Official Name: InvSub
BCALL Address: 4063
Computes the floating point subtraction OP2-OP1.
Inputs
- OP1 = floating point number
- OP2 = floating point number
Outputs
- OP1 = OP2-OP1
Registers Destroyed
- AF, BC, DE, HL
Comments
This is similar to FPsub.
Example
Suppose OP1=00h,80h,12h,00h,... And OP2=00h,80h,10h,00h,... After B_CALL InvSub, OP1=80h,7Fh,20h,00h,... Suppose OP1=00h,80h,10h,00h,... And OP2=00h,80h,12h,00h,... After B_CALL InvSub, OP1=00h,7Fh,20h,00h,...
