µ
PD75512
36
10. INSTRUCTION SET
(1)
Operand representation and description
Describe one or more operands in the operand field of each instruction according to the operand
representation and description methods of the instruction (for details, refer to RA75X Assembler Package
User's Manual - Language (EEU-730)). With some instructions, only one operand should be selected from
several operands. The uppercase characters, +, and – are keywords and must be described as is.
Describe an appropriate numeric value or label as immediate data.
Representation
Description
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*
bit
2-bit immediate data or label
fmem
FB0H to FBFH,FF0H to FFFH immediate data or label
pmem
FC0H to FFFH immediate data or label
addr
0000H to 1F7FH immediate data or label
caddr
12-bit immediate data or label
faddr
11-bit immediate data or label
taddr
20H to 7FH immediate data (where bit0 = 0) or label
PORTn
PORT0 to PORT15
IExxx
IEBT, IECSI0, IET0, IE0, IE1, IE2, IE4, IEW, IETPG
RBn
RB0-RB3
MBn
MB0, MB1, MB15
*: Only even addresses can be described in mem when processing
8-bit data.
Содержание mPD75512
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