Difference between revisions of "83Plus:BCALLs:4009"

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(Created LdHLInd)
 
(Synopsis: changed "store" to "load", since 'store' usually means writes to memory)
 
(5 intermediate revisions by 2 users not shown)
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[[Category:83Plus:BCALLs:By Name:Utility|LdHLInd]] [[Category:83Plus:BCALLs:By Name|LdHLInd]] [[Category:83Plus:BCALLs:By Address|4009 - LdHLInd]]
 
== Synopsis ==
 
== Synopsis ==
 
'''Official Name:''' LdHLInd
 
'''Official Name:''' LdHLInd
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'''BCALL Address:''' 4009
 
'''BCALL Address:''' 4009
  
Stores the value at (HL) to register HL.
+
Loads the value at (HL) into register HL.
  
 
=== Inputs ===
 
=== Inputs ===
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== Comments ==
 
== Comments ==
Useful utility call.  Equivilant code located in example.
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Useful utility call.  Equivalent code located in example.
  
 
== Example ==
 
== Example ==
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  ld h,(hl)
 
  ld h,(hl)
 
  ld l,a
 
  ld l,a
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ret</nowiki>
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There is also an equivalent version which uses DE instead of A:
 +
<nowiki>LdHLInd:
 +
ld e,(hl)
 +
inc hl
 +
ld d,(hl)
 +
ex de,hl
 
  ret</nowiki>
 
  ret</nowiki>

Latest revision as of 17:16, 9 October 2005

Synopsis

Official Name: LdHLInd

BCALL Address: 4009

Loads the value at (HL) into register HL.

Inputs

  • HL: pointer to bytes to load

Outputs

  • HL: value located at input (HL)

Registers Destroyed

  • AF

Comments

Useful utility call. Equivalent code located in example.

Example

LdHLInd:
 ld a,(hl)
 inc hl
 ld h,(hl)
 ld l,a
 ret

There is also an equivalent version which uses DE instead of A:

LdHLInd:
 ld e,(hl)
 inc hl
 ld d,(hl)
 ex de,hl
 ret