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RAMB (Super FX): Difference between revisions

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'''RAMB''' is a [[Super FX]] instruction that moves the low byte of the [[source register]] into [[RAMBR]].
'''RAMB''' is a [[Super FX]] instruction that moves the low byte of the [[source register]] into [[RAMBR]].
The source register should be specified in advance using [[WITH]] or [[FROM]].  Otherwise, R<sub>0</sub> serves as the default.
The [[ALT0]] state is restored.
==== Syntax ====
<pre>
RAMB
</pre>
==== Example ====
Let:
S<sub>reg</sub> : R<sub>3</sub>
R<sub>3</sub> = 0170h
After executing RAMB, the RAM bank register becomes 70h.


=== See Also ===
=== See Also ===
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* [[ALT2]]
* [[ALT2]]
* [[SMS]]
* [[SMS]]
* [[SM]]


=== External Links ===
=== External Links ===
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[[Category:Bank Set-up Instructions]]
[[Category:Bank Set-up Instructions]]
[[Category:Two-byte Instructions]]
[[Category:Two-byte Instructions]]
[[Category:Expects Sreg/Dreg Prearranged]]

Latest revision as of 00:20, 13 July 2024

Basic Info
Addressing Mode Opcode Length ROM Speed RAM Speed Cache Speed
Implied (type 1) 3EDF 2 bytes 6 cycles 6 cycles 2 cycles
Flags Affected
B ALT1 ALT2 O/V S CY Z
0 0 0 . . . .

RAMB is a Super FX instruction that moves the low byte of the source register into RAMBR.

The source register should be specified in advance using WITH or FROM. Otherwise, R0 serves as the default.

The ALT0 state is restored.

Syntax

RAMB

Example

Let: 

Sreg : R3
R3 = 0170h

After executing RAMB, the RAM bank register becomes 70h.

See Also

External Links

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