參數(shù)資料
型號: μPD703008
廠商: NEC Corp.
英文描述: 16/32 Bit RISC Microcontrollers(16/32位RISC微控制器)
中文描述: 16/32位RISC微控制器(16/32位的RISC微控制器)
文件頁數(shù): 37/141頁
文件大小: 374K
代理商: ΜPD703008
CHAPTER 5 INSTRUCTION
5.1 Instruction Format
The V850 family has two types of instruction formats: 16-bit and 32-bit. The 16-bit instructions include binary
operation, control, and conditional branch instructions, and the 32-bit instructions include load/store, jump, and
instructions that handle 16-bit immediate data.
Some instructions have an unused field (RFU). This field is reserved for future expansion and must be fixed
to 0.
An instruction is actually stored in memory as follows:
Lower bytes of instruction (including bit 0)
Higher bytes of instruction (including bit 15 or 31)
higher address
lower address
(1) reg-reg instruction (Format I)
A 16-bit instruction format having a 6-bit op code field and two general register specification fields for operand
specification.
(2) imm-reg instruction (Format II)
A 16-bit instruction format having a 6-bit op code field, 5-bit immediate field, and a general register specification
field.
(3) Conditional branch instruction (Format III)
A 16-bit instruction format having a 4-bit op code field, 4-bit condition code, and an 8-bit displacement.
15
11
10
5
4
0
reg2
opcode
reg1
15
11
10
5
4
0
reg2
opcode
imm
15
11
10
6
4
0
disp
opcode
cond
disp
3
7
25
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