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CMODE (Super FX): Difference between revisions
From SnesLab
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'''CMODE''' is a [[Super FX]] instruction that specifies [[execution modes]]. It sets plot and color related flags based on the low 5 bits of the [[source register]]. | '''CMODE''' is a [[Super FX]] instruction that specifies [[execution modes]]. It sets plot and color related flags based on the low 5 bits of the [[source register]]. | ||
The [[ALT0]] state is restored. | |||
==== Syntax ==== | ==== Syntax ==== | ||
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CMODE | CMODE | ||
</pre> | </pre> | ||
==== Example ==== | |||
Let: | |||
S<sub>reg</sub> : R<sub>0</sub> | |||
R<sub>0</sub> = 0002h | |||
After CMODE runs, the transparency and dither modes are set. | |||
=== See Also === | === See Also === | ||
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* [[Dither Flag]] | * [[Dither Flag]] | ||
* [[ALT1]] | * [[ALT1]] | ||
* [[Plot Options Register]] | |||
* [[COLOR]] | |||
=== External Links === | === External Links === | ||
* Official Nintendo documentation on CMODE: 9.28 on [https://archive.org/details/SNESDevManual/book2/page/n195 Page 2-9-39 of Book II] | * Official Nintendo documentation on CMODE: 9.28 on [https://archive.org/details/SNESDevManual/book2/page/n195 Page 2-9-39 of Book II] | ||
* example: [https://archive.org/details/SNESDevManual/book2/page/n196 Page 2-9-40], lbid. | * example: [https://archive.org/details/SNESDevManual/book2/page/n196 Page 2-9-40], lbid. | ||
* 8.1.4 Plot Function and CMODE on page 2-8-9, lbid. | |||
[[Category:ASM]] | [[Category:ASM]] | ||
Latest revision as of 18:12, 16 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | ROM Speed | RAM Speed | Cache Speed | ||
| Implied (type 1) | 3D4E | 2 bytes | 6 cycles | 6 cycles | 2 cycle | ||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| B | ALT1 | ALT2 | O/V | S | CY | Z | ||
| 0 | 0 | 0 | . | . | . | . | ||
| Color/Plot flags | ||||||||
|---|---|---|---|---|---|---|---|---|
| Plot Transparent | Plot Dither | Color Src High | Color Frz High | Object Mode | ||||
| Bit 0 of src | Bit 1 of src | Bit 2 of src | Bit 3 of src | Bit 4 of src | ||||
CMODE is a Super FX instruction that specifies execution modes. It sets plot and color related flags based on the low 5 bits of the source register.
The ALT0 state is restored.
Syntax
CMODE
Example
Let:
Sreg : R0 R0 = 0002h
After CMODE runs, the transparency and dither modes are set.
See Also
External Links
- Official Nintendo documentation on CMODE: 9.28 on Page 2-9-39 of Book II
- example: Page 2-9-40, lbid.
- 8.1.4 Plot Function and CMODE on page 2-8-9, lbid.