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VR4102 Datasheet(PDF) 531 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) 531 Page - NEC

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CHAPTER 27 CPU INSTRUCTION SET DETAILS
531
ADDI
Add Immediate
ADDI
rs
ADDI
0 0 1 0 0 0
rt
immediate
31
26 25
21 20
16 15
0
65
5
16
Format:
ADDI 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. In 64-bit mode, the operand must be valid sign-extended, 32-bit values.
An overflow exception occurs if carries out of bits 30 and 31 differ (2’s complement overflow). The destination
register
rt is not modified when an integer overflow exception occurs.
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:
Integer overflow exception



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