We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS
JMP: Difference between revisions
From SnesLab
(no flags affected) |
(NMOS 6502 bug) |
||
| Line 56: | Line 56: | ||
'''JMP''' is a [[65c816]] instruction that performs an unconditional jump. | '''JMP''' is a [[65c816]] instruction that performs an unconditional jump. | ||
The NMOS 6502's opcode 6C behaves incorrectly when the low byte of the target address is $FF. | |||
No flags are affected. | No flags are affected. | ||
Revision as of 22:23, 27 June 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Absolute | 4C | 3 bytes | 3 cycles | ||||
| Absolute Indirect | 6C | 3 bytes | 5 cycles | ||||
| Absolute Indexed Indirect | 7C | 3 bytes | 6 cycles | ||||
| Absolute Long | 5C | 4 bytes | 4 cycles | ||||
| Absolute Indirect Long | DC | 3 bytes | 6 cycles | ||||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| . | . | . | . | . | . | . | . | |
JMP is a 65c816 instruction that performs an unconditional jump.
The NMOS 6502's opcode 6C behaves incorrectly when the low byte of the target address is $FF.
No flags are affected.
See Also
External Links
- Eyes & Lichty page 459, on JMP: https://archive.org/details/0893037893ProgrammingThe65816/page/n485
- Labiak page 145 on JMP: https://archive.org/details/Programming_the_65816/page/n155
- MCS6500 Manual page 36 on JMP: https://archive.org/details/mos_microcomputers_programming_manual/page/n51
- Carr page 261 on JMP: https://archive.org/details/6502UsersManual/page/n274
- Leventhal page 3-69 on JMP: https://archive.org/details/6502-assembly-language-programming/page/n118