| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
|---|---|---|---|---|---|---|---|---|
| \((C) \longleftarrow r\) | ||||||||
| OUT (C), r | ||||||||
| 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | ED |
| 0 | 1 | r | 0 | 0 | 1 | |||
| \((C) \longleftarrow F\) | ||||||||
| OUT (C), F | ||||||||
| 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | ED |
| 0 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 71 |
| Register | r |
|---|---|
| B | 000 |
| C | 001 |
| D | 010 |
| E | 011 |
| H | 100 |
| L | 101 |
| A | 111 |
The contents of Register C are placed on the bottom half (A0…7) of the address bus to select the I/O device at one of 256 possible ports.
The contents of Register B are placed on the top half (A8…A15) of the address bus at this time.
Then the byte contained in r is placed on the data bus and written to the selected peripheral device.
There is an undocumented code where r=%110 which writes the flag register.
Unlike it's IN F, (C) counterpart, this instruction is completely undocumented, but it's here not in the undocumented section to be consistent.
Flags Affected
| None. |
Opcode Matrix
| A | B | C | D | E | H | L | F | |
|---|---|---|---|---|---|---|---|---|
| OUT (C) |
OUT (C),A
ED79212 |
OUT (C),B
ED41212 |
OUT (C),C
ED49212 |
OUT (C),D
ED51212 |
OUT (C),E
ED59212 |
OUT (C),H
ED61212 |
OUT (C),L
ED69212 |
OUT (C),F
ED71212 |
|
Instruction
Opcode hexSize bytesCycle count
| Special | Undocumented |