We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS
DEC (Super FX): Difference between revisions
From SnesLab
(The ALT0 state is restored.) |
(made flags affected more prominent) |
||
| (2 intermediate revisions by the same user not shown) | |||
| Line 32: | Line 32: | ||
|0 | |0 | ||
|. | |. | ||
| | |S | ||
|. | |. | ||
| | |Z | ||
|} | |} | ||
| Line 55: | Line 55: | ||
* [[INC (Super FX)]] | * [[INC (Super FX)]] | ||
* [[DEC]] | * [[DEC]] | ||
* [[DEC (SPC700)]] | |||
* [[DEX]] | |||
* [[DEY]] | |||
=== External Links === | === External Links === | ||
Latest revision as of 18:43, 30 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | ROM Speed | RAM Speed | Cache Speed | ||
| Implied (type 1) | En | 1 byte | 3 cycles | 3 cycles | 1 cycle | ||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| B | ALT1 | ALT2 | O/V | S | CY | Z | ||
| 0 | 0 | 0 | . | S | . | Z | ||
DEC is a Super FX instruction that decrements a register by one. The register selected can be from R0 to R14.
The ALT0 state is restored.
Syntax
DEC Rn
Example
Let:
R9 = a3f7h
After executing DEC R9:
R9 = a3f6h
See Also
External Links
- Official Nintendo documentation on DEC: 9.31 on page 2-9-43 of Book II