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HIB (Super FX): Difference between revisions
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''' | {| class="wikitable" style="float:right;clear:right;width:50%" | ||
!colspan="8"|Basic Info | |||
|+ | |||
|'''Addressing Mode''' | |||
|'''Opcode''' | |||
|'''Length''' | |||
|'''ROM Speed''' | |||
|'''RAM Speed''' | |||
|'''Cache Speed''' | |||
|+ | |||
|[[Implied]] (type 1) | |||
|C0 | |||
|1 byte | |||
|3 cycles | |||
|3 cycles | |||
|1 cycle | |||
|} | |||
{| class="wikitable" style="float:right;clear:right;width:30%" | {| class="wikitable" style="float:right;clear:right;width:30%" | ||
!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 | |[[Zero Flag|Z]] | ||
|+ | |+ | ||
|0 | |0 | ||
| Line 16: | Line 32: | ||
|0 | |0 | ||
|. | |. | ||
| | |S | ||
|. | |. | ||
| | |Z | ||
|} | |} | ||
'''HIB''' (High Byte) is a [[Super FX]] instruction that moves the high byte of the [[source register]] into the low byte of the [[destination register]]. The high byte of the destination register is zeroed. | |||
The [[ALT0]] state is restored. | |||
The source and destination registers should be specified in advance using [[WITH]], [[FROM]], or [[TO]]. Otherwise, R<sub>0</sub> serves as the default. | |||
==== Syntax ==== | |||
<pre> | |||
HIB | |||
</pre> | |||
==== Example ==== | |||
Let: | |||
S<sub>reg</sub> : R<sub>11</sub> | |||
D<sub>reg</sub> : R<sub>1</sub> | |||
R<sub>11</sub> = 8a43h | |||
After executing HIB: | |||
R<sub>1</sub> = 008ah | |||
and the sign flag is set. | |||
[[File:gsu_hib.png]] | |||
=== See Also === | |||
* [[LOB]] | |||
* [[MERGE]] | |||
* [[SEX]] | |||
=== External Links === | === External Links === | ||
* Official Nintendo documentation on HIB: https://archive.org/details/SNESDevManual/book2/page/n214 | * Official Nintendo documentation on HIB: paragraph 9.40 on [https://archive.org/details/SNESDevManual/book2/page/n214 Page 2-9-58 of Book II] | ||
* example: [https://archive.org/details/SNESDevManual/book2/page/n215 page 2-9-59 of Book II], lbid. | |||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:Super FX]] | [[Category:Super FX]] | ||
[[Category:Byte Transfer Instructions]] | [[Category:Byte Transfer Instructions]] | ||
[[Category:One-byte Instructions]] | |||
[[Category:Expects Sreg/Dreg Prearranged]] | |||
Latest revision as of 18:46, 30 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | ROM Speed | RAM Speed | Cache Speed | ||
| Implied (type 1) | C0 | 1 byte | 3 cycles | 3 cycles | 1 cycle | ||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| B | ALT1 | ALT2 | O/V | S | CY | Z | ||
| 0 | 0 | 0 | . | S | . | Z | ||
HIB (High Byte) is a Super FX instruction that moves the high byte of the source register into the low byte of the destination register. The high byte of the destination register is zeroed.
The ALT0 state is restored.
The source and destination registers should be specified in advance using WITH, FROM, or TO. Otherwise, R0 serves as the default.
Syntax
HIB
Example
Let:
Sreg : R11 Dreg : R1 R11 = 8a43h
After executing HIB:
R1 = 008ah
and the sign flag is set.
See Also
External Links
- Official Nintendo documentation on HIB: paragraph 9.40 on Page 2-9-58 of Book II
- example: page 2-9-59 of Book II, lbid.