Difference between revisions of "83Plus:BCALLs:8042"

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m (Capitalization and official name.)
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[[Category:83Plus:BCALLs:By Name:Math|MultAbyE]]
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[[Category:83Plus:BCALLs:By Name:Math|Mult8By8]]
[[Category:83Plus:BCALLs:By Name|MultAbyE]]
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[[Category:83Plus:BCALLs:By Name|Mult8By8]]
[[Category:83Plus:BCALLs:By Address|8042 - MultAbyE]]
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[[Category:83Plus:BCALLs:By Address|8042 - Mult8By8]]
 
== Synopsis ==
 
== Synopsis ==
'''Official Name:''' MultAbyE
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'''Official Name:''' Mult8By8
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 +
'''Other Name:''' MultAbyE
  
 
'''BCALL Address:''' 8042
 
'''BCALL Address:''' 8042
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* a = operand 1
 
* a = operand 1
 
* e = operand 2
 
* e = operand 2
<!-- We need to figure out how we're doing flags and link that up -->
 
  
 
=== Outputs ===
 
=== Outputs ===
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=== Destroys ===
 
=== Destroys ===
* a, HL, DE
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* A, HL, DE
  
 
== Comments ==
 
== Comments ==

Revision as of 23:39, 28 March 2005

Synopsis

Official Name: Mult8By8

Other Name: MultAbyE

BCALL Address: 8042

Multiplies register A by register E and stores the result in register HL.

Inputs

  • a = operand 1
  • e = operand 2

Outputs

  • HL = a * e

Destroys

  • A, HL, DE

Comments

Simple enough to implement yourself if speed is important.

Example

 ld     a,4
 ld     e,5
 B_CALL MultAbyE  ;should return 14h or 20 decimal