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VR4102 Datasheet(PDF) 532 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) 532 Page - NEC

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CHAPTER 27 CPU INSTRUCTION SET DETAILS
532
ADDIU
Add Immediate Unsigned
ADDIU
rs
ADDIU
0 0 1 0 0 1
rt
immediate
31
26 25
21 20
16 15
0
65
5
16
Format:
ADDIU rt, rs, immediate
Description:
The 16-bit
immediate is sign-extended and added to the contents of general register rs to form the result. The
result is placed into general register
rt. No integer overflow exception occurs under any circumstances. In 64-bit
mode, the operand must be valid sign-extended, 32-bit values.
The only difference between this instruction and the ADDI instruction is that ADDIU never causes an integer
overflow exception.
Operation:
32
T:
GPR [rt] <- GPR [rs] + (immediate15)
16
|| immediate15...0
64
T:
temp <- GPR [rs] + (immediate15)
48
|| immediate15...0
GPR [rt] <- (temp31)
32
|| temp31...0
Exceptions:
None



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