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VR4102 Datasheet(PDF) 541 Page - NEC

Part # VR4102
Description  64/32-bit Microprocessor
PDF  701 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

VR4102 Datasheet(HTML) 541 Page - NEC

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CHAPTER 27 CPU INSTRUCTION SET DETAILS
541
BEQL
Branch On Equal Likely
BEQL
rs
BEQL
0 1 0 1 0 0
rt
offset
31
26 25
21 20
16 15
0
65
5
16
Format:
BEQL rs, rt, offset
Description:
A branch target address is computed from the sum of the address of the instruction in the delay slot and the 16-bit
offset, shifted left two bits and sign-extended. The contents of general register
rs and the contents of general
register
rt are compared. If the two registers are equal, the target address is branched to, with a delay of one
instruction. If the conditional branch is not taken, the instruction in the branch delay slot is nullified.
Operation:
32
T:
target <- (offset15)
14 || offset || 02
condition <- (GPR [rs] = GPR [rt])
T+1: if condition then
PC <- PC + target
else
NullifyCurrentInstruction
endif
64
T:
target <- (offset15)
46 || offset || 02
condition <- (GPR [rs] = GPR [rt])
T+1: if condition then
PC <- PC + target
else
NullifyCurrentInstruction
endif
Exceptions:
None



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