UPD705100GJ-100-8 NEC [NEC], UPD705100GJ-100-8 Datasheet - Page 29

• Manufacturer Part Number: UPD705100GJ-100-8
• Description: V830TM 32-BIT MICROCONTROLLER
• Manufacturer: NEC [NEC]

11. INSTRUCTIONS
11.1 Instruction Format
and conditional branch instructions, while the 32-bit instructions include load/store and I/O operation instructions,
instructions for handling 16 bits of immediate data, and jump-and-link instructions.
instruction is actually loaded into memory, its configuration is as follows:
(1) reg-reg instruction format [FORMAT I]
(2) imm-reg instruction format [FORMAT II]
(3) Conditional branch instruction format [FORMAT III]
The V830 uses two instruction formats: 16-bit and 32-bit. The 16-bit instructions include binary operation, control,
Some instructions contain unused fields, which must be fixed to 0, which are provided for future use. When an
• Low-order part of each instruction format (including bit 0)
• High-order part of each instruction format (including bit 15 or 31)
This instruction format has a six-bit operation code field and two general-purpose register designation fields for
operand specification, giving a total length of 16 bits.
This instruction format has a six-bit operation code field, a five-bit immediate data field, and a general-purpose
register designation field, giving a total length of 16 bits.
This instruction format has a three-bit operation code field, a four-bit condition code field, a nine-bit branch
displacement field (bit 0 is handled as 0 and need not be specified), and a one-bit sub-operation code, giving a
total length of 16 bits.
15
s : sub-opcode
opcode
13 12
15
15
cond
opcode
opcode
9 8
10
10 9
9
disp 9
reg 2
reg 2
5
5 4
4
Low-order address
1 0
s
imm 5
reg 1
s = 0 : Bcond
s = 1 : ABcond
High-order address
0
0
PD705100
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