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SEX (Super FX): Difference between revisions
From SnesLab
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!colspan="8"|Basic Info | !colspan="8"|Basic Info | ||
|+ | |+ | ||
|'''Addressing Mode''' | |||
|'''Opcode''' | |'''Opcode''' | ||
|'''Length''' | |'''Length''' | ||
| Line 8: | Line 9: | ||
|'''Cache Speed''' | |'''Cache Speed''' | ||
|+ | |+ | ||
|[[Implied]] (type 1) | |||
|95 | |95 | ||
|1 byte | |1 byte | ||
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!colspan="9"|Flags Affected | !colspan="9"|Flags Affected | ||
|+ | |+ | ||
|B | |[[B Flag|B]] | ||
|[[ALT1]] | |[[ALT1]] | ||
|[[ALT2]] | |[[ALT2]] | ||
|[[O/V]] | |[[O/V]] | ||
|S | |[[Sign Flag|S]] | ||
|[[CY]] | |[[CY]] | ||
|Z | |Z | ||
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'''SEX''' is a [[Super FX]] instruction that performs a sign extension of an 8-bit value. Bit 7 (the sign of the lower 8 bits) of the [[source register]] is copied into all the bits in the high byte of the [[destination register]]. The low byte of the source register is copied directly into the low byte of the destination register. | '''SEX''' is a [[Super FX]] instruction that performs a sign extension of an 8-bit value. Bit 7 (the sign of the lower 8 bits) of the [[source register]] is copied into all the bits in the high byte of the [[destination register]]. The low byte of the source register is copied directly into the low byte of the destination register. | ||
[[File:gsu_sex.png]] | |||
=== See Also === | === See Also === | ||
* [[LOB]] | * [[LOB]] | ||
* [[HIB]] | |||
* [[MERGE]] | |||
=== External Links === | === External Links === | ||
* Official Nintendo documentation on SEX: [https://archive.org/details/SNESDevManual/book2/page/n266 page 2-9-110 of Book II] | * Official Nintendo documentation on SEX: paragraph 9.80 on [https://archive.org/details/SNESDevManual/book2/page/n266 page 2-9-110 of Book II] | ||
* example: [https://archive.org/details/SNESDevManual/book2/page/n267 page 2-9-111], lbid. | * example: [https://archive.org/details/SNESDevManual/book2/page/n267 page 2-9-111], lbid. | ||
Latest revision as of 19:44, 2 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | ROM Speed | RAM Speed | Cache Speed | ||
| Implied (type 1) | 95 | 1 byte | 3 cycles | 3 cycles | 1 cycle | ||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| B | ALT1 | ALT2 | O/V | S | CY | Z | ||
| 0 | 0 | 0 | . | . | ||||
SEX is a Super FX instruction that performs a sign extension of an 8-bit value. Bit 7 (the sign of the lower 8 bits) of the source register is copied into all the bits in the high byte of the destination register. The low byte of the source register is copied directly into the low byte of the destination register.
See Also
External Links
- Official Nintendo documentation on SEX: paragraph 9.80 on page 2-9-110 of Book II
- example: page 2-9-111, lbid.