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86 Altera Corporation
32-Bit Instruction Set
SKP1
Skip If Register Bit Is 1
Operation:
if (RA[IMM5] = = 1)
then begin
if (Mem16[PC + 2] is PFX)
then PC ← PC + 6
else PC ← PC + 4
end
Assembler Syntax: SKP1 %rA,IMM5
Example: SKP1 %o3,21 ; skip if 21st bit of %o3 is set
ADDI %g0, 1 ; increment if 21st bit clear
Description: Skip next instruction if the single bit RA[IMM5] is 1. If the next instruction is PFX,
then both PFX and the instruction following PFX are skipped together.
Condition Codes: Flags: Unaffected
Instruction Format: Ri5
Instruction Fields: A = Register index of operand RA
IMM5 = 5-bit immediate value
1514131211109876543210
010101 IMM5 A
NVZC
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