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FROM (Super FX): Difference between revisions
From SnesLab
(Added connection to the B Flag and MOVE.) |
(implied type 1) |
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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) | |||
|Bn | |Bn | ||
|1 byte | |1 byte | ||
| Line 18: | Line 20: | ||
!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 | ||
| Line 38: | Line 40: | ||
No flags are affected. | No flags are affected. | ||
==== Syntax ==== | |||
<pre> | |||
FROM Rn | |||
</pre> | |||
=== See Also === | === See Also === | ||
| Line 45: | Line 52: | ||
=== External Links === | === External Links === | ||
* Official Nintendo documentation on FROM: [https://archive.org/details/SNESDevManual/book2/page/n204 | * Official Nintendo documentation on FROM: 9.34 on [https://archive.org/details/SNESDevManual/book2/page/n204 page 2-9-48 of Book II] | ||
* Official Nintendo documentation on Register Prefixes: [https://archive.org/details/SNESDevManual/book2/page/n129 page 2-6-7 of Book II] | * Official Nintendo documentation on Register Prefixes: [https://archive.org/details/SNESDevManual/book2/page/n129 page 2-6-7 of Book II] | ||
Latest revision as of 02:26, 6 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | ROM Speed | RAM Speed | Cache Speed | ||
| Implied (type 1) | Bn | 1 byte | 3 cycles | 3 cycles | 1 cycle | ||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| B | ALT1 | ALT2 | O/V | S | CY | Z | ||
| . | . | . | . | . | . | . | ||
FROM is a Super FX register prefix instruction that specifies the source register. The exception is when the B Flag is set (i.e. a WITH instruction is executed immediately before) in which case a MOVES is executed instead with WITH acting as the source and FROM as the destination.
No flags are affected.
Syntax
FROM Rn
See Also
External Links
- Official Nintendo documentation on FROM: 9.34 on page 2-9-48 of Book II
- Official Nintendo documentation on Register Prefixes: page 2-6-7 of Book II