Difference between revisions of "RealQ16s:Provisional instruction listing/Opcode table/1 byte instructions"
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(Created page with "{| class="wikitable" border="1" |- ! colspan="8" | Range ! Operation ! colspan="8" | bits ! Distinct<br/>opcodes ! Comment ! Caveats |- | colspan="4" | 0000 | colspan="4" | 0...") |
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Revision as of 20:32, 12 February 2016
| Range | Operation | bits | Distinct opcodes |
Comment | Caveats | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0000 | 0000 | NOP
|
0000 | 0000 | x1 | Does nothing | |||||||||||||
| 0000 | 0001 | (unused) | 0000 | 0001 | (x15 opcodes) | ||||||||||||||
| ... | ... | ... | |||||||||||||||||
| 0000 | 1111 | (Unused) | 0000 | 1111 | |||||||||||||||
| 0001 | 0000 | MOV r1,r2
|
0001 | r1 | r2 | x12 | Store r1 in r2, treating them both as 16 bit registers | r1 and r2 must be different | |||||||||||
| ... | (Unused) | 0001 | 0000 | x1 | |||||||||||||||
| (Unused) | 0001 | 0101 | x1 | ||||||||||||||||
| (Unused) | 0001 | 1010 | x1 | ||||||||||||||||
| 0001 | 1111 | (Unused) | 0001 | 1111 | x1 | ||||||||||||||
| 0010 | 0000 | PUSH r1
|
0010 | 00 | r1 | x4 | Push the 16 bit register r1 | ||||||||||||
| 0010 | 0100 | POP r1
|
0010 | 01 | r1 | x4 | Pop the 16 bit register r1 | ||||||||||||
| 0010 | 1000 | MOV b1,r1L
|
0010 | 10 | r1 | x1024 (x4) | 16 bit instruction 0010 10r1 vvvv vvvv - move byte b1 given by v into low byte of register r1
|
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| 0010 | 1100 | ||||||||||||||||||
