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Absolute Long Addressing: Difference between revisions

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(→‎References: Clark link)
(→‎References: hid archive URL for E&L)
 
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* [[JMP]] / JML (opcode 5C)
* [[JMP]] / JML (opcode 5C)
* [[JSR]] / JSL (opcode 22)
* [[JSR]] / JSL (opcode 22)
All are four bytes long.  This is what the various operand bytes represent:
# low byte of absolute address (byte within [[page]])
# high byte of absolute address (page number)
# [[bank]] number


==== Syntax ====
==== Syntax ====
Line 22: Line 27:


=== References ===
=== References ===
* [[Eyes & Lichty]] page 385, https://archive.org/details/0893037893ProgrammingThe65816/page/385
* [[Eyes & Lichty]], [https://archive.org/details/0893037893ProgrammingThe65816/page/385 page 385]
* section 3.5.7 of 65c816 datasheet, https://westerndesigncenter.com/wdc/documentation/w65c816s.pdf
* section 3.5.7 of 65c816 datasheet, https://westerndesigncenter.com/wdc/documentation/w65c816s.pdf
* Clark, Bruce. http://www.6502.org/tutorials/65c816opcodes.html#5.16
* Clark, Bruce. http://www.6502.org/tutorials/65c816opcodes.html#5.16

Latest revision as of 19:09, 8 August 2024

Absolute Long Addressing is supported by ten instructions:

  • ADC (opcode 6F)
  • SBC (opcode EF)
  • AND (opcode 2F)
  • ORA (opcode 0F)
  • LDA (opcode AF)
  • STA (opcode 8F)
  • EOR (opcode 4F)
  • CMP (opcode CF)
  • JMP / JML (opcode 5C)
  • JSR / JSL (opcode 22)

All are four bytes long. This is what the various operand bytes represent:

  1. low byte of absolute address (byte within page)
  2. high byte of absolute address (page number)
  3. bank number

Syntax

LDA long

See Also

References