µ
PD754144, 754244
39
Data Sheet U10040EJ2V1DS
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
PD754144, 754244 user's manual (U10676E)”
.
Expression
Description method
format
reg
X, A, B, C, D, E, H, L
reg1
X, B, C, D, E, H, L
rp
XA, BC, DE, HL
rp1
BC, DE, HL
rp2
BC, DE
rp'
XA, BC, DE, HL, XA', BC', DE', HL'
rp'1
BC, DE, HL, XA', BC', DE', HL'
rpa
HL, HL+, HL–, DE, DL
rpa1
DE, DL
n4
4-bit immediate data or label
n8
8-bit immediate data or label
mem
8-bit immediate data or label
Note
bit
2-bit immediate data or label
fmem
FB0H-FBFH, FF0H-FFFH immediate data or label
pmem
FC0H-FFFH immediate data or label
addr
000H-FFFH immediate data or label
addr1
000H-FFFH immediate data or label
caddr
12-bit immediate data or label
faddr
11-bit immediate data or label
taddr
20H-7FH immediate data (where bit 0 = 0) or label
PORTn
PORT3, 6, 7, 8
IE
×××
IEBT, IET0-IET2, IE0, IE2, IEEE
RBn
RB0-RB3
MBn
MB0, MB4, MB15
Note
mem can be only used for even address in 8-bit data processing.
*