參數(shù)資料
型號(hào)： UPD754264GS
廠商： NEC Corp.
英文描述： 4-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述： 4位單晶片微控制器
文件頁數(shù)： 36/68頁
文件大小： 318K
代理商： UPD754264GS
36
μ
PD754264
12. INSTRUCTION SETS
(1) Expression formats and description methods of operands
The operand is described in the operand column of each instruction in accordance with the description method
for the operand expression format of the instruction. For details, refer to “
RA75X ASSEMBLER PACKAGE
USERS’ MANUAL — LANGUAGE (EEU-1367)
”. If there are several elements, one of them is selected. Capital
letters and the + and – symbols are key words and are described as they are.
For immediate data, appropriate numbers and labels are described.
Instead of the labels such as mem, fmem, pmem, and bit, the symbols of the registers can be described.
However, there are restrictions in the labels that can be described for fmem and pmem. For details, refer to
“
μ
PD754264 user's manual (U12287E)”
.
Expression
format
Description method
reg
reg1
X, A, B, C, D, E, H, L
X, B, C, D, E, H, L
rp
rp1
rp2
rp'
rp'1
XA, BC, DE, HL
BC, DE, HL
BC, DE
XA, BC, DE, HL, XA', BC', DE', HL'
BC, DE, HL, XA', BC', DE', HL'
rpa
rpa1
HL, HL+, HL–, DE, DL
DE, DL
n4
n8
4-bit immediate data or label
8-bit immediate data or label
mem
bit
8-bit immediate data or label
Note
2-bit immediate data or label
fmem
pmem
FB0H-FBFH, FF0H-FFFH immediate data or label
FC0H-FFFH immediate data or label
addr
addr1
caddr
faddr
000H-FFFH immediate data or label
000H-FFFH immediate data or label
12-bit immediate data or label
11-bit immediate data or label
taddr
20H-7FH immediate data (where bit 0 = 0) or label
PORTn
IE
×××
RBn
MBn
PORT3, 6, 7, 8
IEBT, IET0-IET2, IE0, IE2, IEEE
RB0-RB3
MB0, MB4, MB15
Note
mem can be only used for even address in 8-bit data processing.
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