OR (Super FX): Difference between revisions

Revision as of 00:19, 13 July 2024


Basic Info
Addressing Mode	Opcode	Length	ROM Speed	RAM Speed	Cache Speed
Immediate	3ECn	2 bytes	6 cycles	6 cycles	2 cycle
Implied (type 1)	Cn	1 byte	3 cycles	3 cycles	1 cycle


Flags Affected
B	ALT1	ALT2	O/V	S	CY	Z
0	0	0	.		.

OR is a Super FX instruction that performs a logical bitwise OR between the source register and its operand. The disjunction is stored in the destination register. The operand may be any register from R₁ to R₁₅ or any immediate value from 1 to 15.

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

OR Rn
OR #n

Example 1

Let:

S_reg : R₄
D_reg : R₅
R₄ = 6368h (0110 0011 0110 1000b)
R₂ = 168ch (0001 0110 1000 1100b)

After executing OR R₂:

R₅ = 77ech (0111 0111 1110 1100b)

Example 2

Let:

S_reg : R₇
D_reg : R₅
R₇ = 5fa2h (0101 1111 1010 0010b)

After executing OR #5h:

R₅ = 5fa7h (0101 1111 1010 0111b)

External Links

Official Nintendo documentation on OR: 9.70 on page 2-9-97 of Book II
example 1: page 2-9-98 of Book II, lbid.
immediate OR: 9.71 on page 2-9-99 of Book II

@@ Line 45: / Line 45: @@
 '''OR''' is a [[Super FX]] instruction that performs a logical bitwise OR between the [[source register]] and its operand.  The disjunction is stored in the [[destination register]].  The operand may be any register from R<sub>1</sub> to R<sub>15</sub> or any immediate value from 1 to 15.
+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.