We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS

ROMB (Super FX): Difference between revisions

From SnesLab
Jump to: navigation, search
(added example)
(linkify Z)
 
(3 intermediate revisions by the same user not shown)
Line 26: Line 26:
|[[Sign Flag|S]]
|[[Sign Flag|S]]
|[[CY]]
|[[CY]]
|Z
|[[Zero Flag|Z]]
|+
|+
|0
|0
Line 38: Line 38:


'''ROMB''' is a [[Super FX]] instruction that moves the low byte of the [[source register]] into [[ROMBR]].
'''ROMB''' is a [[Super FX]] instruction that moves the low byte of the [[source register]] into [[ROMBR]].
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 ====
==== Syntax ====
Line 61: Line 65:
[[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 00:21, 13 July 2024

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

ROMB is a Super FX instruction that moves the low byte of the source register into ROMBR.

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

The ALT0 state is restored.

Syntax

ROMB

Example

Let:

Sreg : R5
R5 = 0046h

After executing ROMB, the ROMBR becomes 46h.

See Also

External Links