We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS

Accumulator Addressing: Difference between revisions

From SnesLab
Jump to: navigation, search
(Category:Inherited from 6502)
(section 3.5.8 of 65c816 datasheet)
Line 7: Line 7:
* [[ROL]] (opcode 2A)
* [[ROL]] (opcode 2A)
* [[ROR]] (opcode 6A)
* [[ROR]] (opcode 6A)
In this admode, the [[accumulator]] is the operand.<sup>[3]</sup>


=== See Also ===
=== See Also ===
Line 13: Line 15:


=== Reference ===
=== Reference ===
* [[Eyes & Lichty]], page 387: https://archive.org/details/0893037893ProgrammingThe65816/page/n413
# [[Eyes & Lichty]], page 387: https://archive.org/details/0893037893ProgrammingThe65816/page/n413
 
# page 126, lbid: https://archive.org/details/0893037893ProgrammingThe65816/page/n152
* page 126, lbid: https://archive.org/details/0893037893ProgrammingThe65816/page/n152
# section 3.5.8 of 65c816 datasheet, https://westerndesigncenter.com/wdc/documentation/w65c816s.pdf


[[Category:ASM]]
[[Category:ASM]]
[[Category:Addressing Modes]]
[[Category:Addressing Modes]]
[[Category:Inherited from 6502]]
[[Category:Inherited from 6502]]

Revision as of 16:24, 27 June 2024

There are six instructions using Accumulator Addressing on the 65c816. They are:

  • ASL (opcode 0A)
  • DEC (opcode 3A)
  • INC (opcode 1A)
  • LSR (opcode 4A)
  • ROL (opcode 2A)
  • ROR (opcode 6A)

In this admode, the accumulator is the operand.[3]

See Also

Reference

  1. Eyes & Lichty, page 387: https://archive.org/details/0893037893ProgrammingThe65816/page/n413
  2. page 126, lbid: https://archive.org/details/0893037893ProgrammingThe65816/page/n152
  3. section 3.5.8 of 65c816 datasheet, https://westerndesigncenter.com/wdc/documentation/w65c816s.pdf