UPD703003 datasheet(47/82 Pages) NEC

47 / 82 page

µPD703003

Data Sheet U12261EJ2V1DS00

Table 15-2. Symbols Used to Indicate Opcodes

Symbol

Description

1-bit data of code specifying reg1 or regID

1-bit data of code specifying reg2

1 bit of displaced data

1 bit of immediate data

cccc

4-bit data used to indicate condition code

bbb

3-bit data used to specify bit number

Table 15-3. Symbols Used to Indicate Operations

Symbol

Description

←

Assign

GR [ ]

General register

SR [ ]

System register

zero-extend (n)

Zero-extend n up until word length

sign-extend (n)

Sign-extend n up until word length

load-memory (a, b)

Read data having size b from address a

store-memory (a, b, c)

Replace data b at address a with data having size c

load-memory-bit (a, b)

Read bit b from address a

store-memory-bit (a, b, c)

Write c to bit b from address a

saturated (n)

Execute saturation processing for n (n = complement to 2)

Calculation of n:

When n

≥ 7FFFFFFFH, result is 7FFFFFFFH.

When n

≤ 80000000H, result is 80000000H.

result

Result is indicated by flag operations

Byte

Byte (8 bits)

Halfword

Half word (16 bits)

Word

Word (32 bits)

Add

–

Subtract

Bit linkage

Multiply

Divide

AND

Logical AND

Logical OR

XOR

Exclusive OR

NOT

Logical NOT

logically shift left by

Logical shift left

logically shift right by

Logical shift right

arithmetically shift right by

Arithmetic shift right

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