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MOVEW (Super FX): Difference between revisions
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'''MOVEW''' is a [[Super FX]] macro instruction that loads data from the [[Game Pak]]. | '''MOVEW''' (Move Word) is a [[Super FX]] macro instruction that loads data from the [[Game Pak]]. | ||
==== Syntax ==== | |||
<pre> | |||
MOVEW Rn, (Rn') | |||
MOVEW (Rn'), Rn | |||
</pre> | |||
==== Example 1 ==== | |||
Let: | |||
R<sub>3</sub> = 6480h | |||
(71:6480h) = 2eh | |||
(71:6481h) = c0h | |||
RAMBR = 71h | |||
After executing this program: | |||
MOVEW R<sub>5</sub>, (R<sub>3</sub>) | |||
; (R<sub>3</sub>) -> R<sub>5</sub> (low byte) | |||
; (R<sub>3</sub>+1) -> R<sub>5</sub> (high byte) | |||
We have: | |||
R<sub>5</sub> = c02eh | |||
==== Example 2 ==== | |||
Let: | |||
R<sub>6</sub> = 0822h | |||
(70:0822h) = 43h | |||
(70:0823h) = 96h | |||
RAMBR = 70h | |||
After executing this program: | |||
MOVEW R<sub>0</sub>, (R<sub>6</sub>) | |||
We have: | |||
R<sub>0</sub> = 9643h | |||
==== Example 3 ==== | |||
Let: | |||
R<sub>9</sub> = bfa3h | |||
R<sub>10</sub> = 4444h | |||
RAMBR = 71h | |||
After executing this program: | |||
MOVEW (R<sub>10</sub>), R<sub>9</sub> | |||
We have: | |||
(71:4444h) = a3h | |||
(71:4445h) = bfh | |||
==== Example 4 ==== | |||
Let: | |||
R<sub>0</sub> = 3151h | |||
R<sub>6</sub> = 92a0h | |||
RAMBR = 71h | |||
After executing this program: | |||
MOVEW (R<sub>6</sub>), R<sub>0</sub> | |||
We have: | |||
(71:92a0h) = 51h | |||
(71:92a1h) = 31h | |||
=== See Also === | |||
* [[MOVE]] | |||
* [[MOVES]] | |||
* [[MOVEB]] | |||
* [[LDW]] | |||
* [[TO]] | |||
* [[FROM]] | |||
* [[STW]] | |||
* [[RAMB]] | |||
* [[MOV]] | |||
=== External Links === | === External Links === | ||
* Official Nintendo | * Official Super Nintendo development manual on MOVEW: 9.64 on [https://archive.org/details/SNESDevManual/book2/page/n246 Page 2-9-90 of Book II] | ||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:Super FX]] | [[Category:Super FX]] | ||
[[Category:Macro Instructions]] | [[Category:Macro Instructions]] | ||
Latest revision as of 05:31, 16 July 2024
MOVEW (Move Word) is a Super FX macro instruction that loads data from the Game Pak.
Syntax
MOVEW Rn, (Rn') MOVEW (Rn'), Rn
Example 1
Let:
R3 = 6480h (71:6480h) = 2eh (71:6481h) = c0h RAMBR = 71h
After executing this program:
MOVEW R5, (R3) ; (R3) -> R5 (low byte) ; (R3+1) -> R5 (high byte)
We have:
R5 = c02eh
Example 2
Let:
R6 = 0822h (70:0822h) = 43h (70:0823h) = 96h RAMBR = 70h
After executing this program:
MOVEW R0, (R6)
We have:
R0 = 9643h
Example 3
Let:
R9 = bfa3h R10 = 4444h RAMBR = 71h
After executing this program:
MOVEW (R10), R9
We have:
(71:4444h) = a3h (71:4445h) = bfh
Example 4
Let:
R0 = 3151h R6 = 92a0h RAMBR = 71h
After executing this program:
MOVEW (R6), R0
We have:
(71:92a0h) = 51h (71:92a1h) = 31h
See Also
External Links
- Official Super Nintendo development manual on MOVEW: 9.64 on Page 2-9-90 of Book II