Difference between revisions of "83Plus:BCALLs:4084"
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'''BCALL Address:''' 4084 | '''BCALL Address:''' 4084 | ||
| − | Multiplies the floating point number in [[83Plus:RAM: | + | Multiplies the floating point number in [[83Plus:RAM:8478|OP1]] by the floating point number in [[83Plus:RAM:8483|OP2]] and stores the result in [[83Plus:RAM:8478|OP1]]. |
=== Inputs === | === Inputs === | ||
| Line 16: | Line 16: | ||
=== Registers Destroyed === | === Registers Destroyed === | ||
* AF, BC, DE, HL, OP3 | * AF, BC, DE, HL, OP3 | ||
| + | * Approx. TStates: | ||
| + | ** worst case | ||
| + | *** 11,000 | ||
| + | ** if insignificant digits of op2 are filled with zeros | ||
| + | *** 3,000 (where op2 is a single digit number) | ||
== Example == | == Example == | ||
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3 | <nowiki>B_CALL OP1Set3 ;OP1=floating point 3 | ||
B_CALL OP2Set2 ;OP2=floating point 2 | B_CALL OP2Set2 ;OP2=floating point 2 | ||
| − | B_CALL | + | B_CALL FPMult ;returns with OP1=floating point 6 |
</nowiki> | </nowiki> | ||
Latest revision as of 07:11, 3 August 2005
Synopsis
Official Name: FPMult
BCALL Address: 4084
Multiplies the floating point number in OP1 by the floating point number in OP2 and stores the result in OP1.
Inputs
- OP1 = floating point number
- OP2 = floating point number
Outputs
- OP1 = OP1 * OP2
Registers Destroyed
- AF, BC, DE, HL, OP3
- Approx. TStates:
- worst case
- 11,000
- if insignificant digits of op2 are filled with zeros
- 3,000 (where op2 is a single digit number)
- worst case
Example
B_CALL OP1Set3 ;OP1=floating point 3 B_CALL OP2Set2 ;OP2=floating point 2 B_CALL FPMult ;returns with OP1=floating point 6
