Immediate Addressing: Difference between revisions

Revision as of 20:35, 28 June 2024

Immediate Addressing is when the data to be operated on directly follows the opcode in the instruction steam. The immediate data is generally preceded by a # in the assembler source.

Supported by the following instructions:

ADC (opcode 69)
SBC (opcode E9)
EOR (opcode 49)
AND (opcode 29)
ORA (opcode 09)
LDA (opcode A9)
LDX (opcode A2)
LDY (opcode A0)
CMP (opcode C9)
CPX (opcode E0)
CPY (opcode C0)
BIT (opcode 89)
SEP (opcode E2)
REP (opcode C2)
ADD (Super FX)
LINK

On the SPC700, "imm" means "8-bit immediate data."^[4]

Reference

Eyes & Lichty page 397, https://archive.org/details/0893037893ProgrammingThe65816/page/n423
lbid, page 108: https://archive.org/details/0893037893ProgrammingThe65816/page/n134
Labiak page 209: https://archive.org/details/Programming_the_65816/page/n219
Appendix C-1 of Book I of the official Super Nintendo development manual
section 3.5.18 of 65c816 datasheet, https://westerndesigncenter.com/wdc/documentation/w65c816s.pdf

@@ Line 29: / Line 29: @@
 # lbid, page 108: https://archive.org/details/0893037893ProgrammingThe65816/page/n134
 # [[Labiak]] page 209: https://archive.org/details/Programming_the_65816/page/n219
-# https://archive.org/details/SNESDevManual/book1/page/n226
+# [https://archive.org/details/SNESDevManual/book1/page/n226 Appendix C-1 of Book I] of the official Super Nintendo development manual
 # section 3.5.18 of 65c816 datasheet, https://westerndesigncenter.com/wdc/documentation/w65c816s.pdf

Revision as of 20:35, 28 June 2024

See Also

Reference