S3F9498 Datasheet, PDF (110/239 Pages) Samsung semiconductor – 8-BIT CMOS MICROCONTROLLER

S3C9498/F9498
SAM88RCRI INSTRUCTION SET
LDC/LDE — Load Memory
LDC/LDE
Operation:
dst,src
dst _ src
This instruction loads a byte from program or data memory into a working register or vice-versa.
The source values are unaffected. LDC refers to program memory and LDE to data memory. The
assembler makes "Irr" or "rr" values an even number for program memory and odd an odd number
for data memory.
Flags:
Format:
No flags are affected.
1. opc dst | src
Bytes
2
Cycles
10
Opcode
(Hex)
C3
Addr Mode
dst src
r
Irr
2. opc src | dst
2
10
D3
Irr
r
3. opc dst | src XS
3
12
E7
r XS [rr]
4. opc src | dst XS
3
12
F7
XS [rr] r
5. opc dst | src XL_L
XL_H
4
14
A7
r XL [rr]
6. opc src | dst XL_L
XL_H
4
14
B7
XL [rr] r
7. opc dst | 0000 DA_L
DA_H
4
14
A7
r
DA
8. opc src | 0000 DA_L
DA_H
4
14
B7
DA
r
9. opc dst | 0001 DA_L
DA_H
4
14
A7
r
DA
10. opc src | 0001 DA_L
DA_H
4
14
B7
DA
r
NOTES:
1. The source (src) or working register pair [rr] for formats 5 and 6 cannot use register pair 0–1.
2. For formats 3 and 4, the destination address "XS [rr]" and the source address "XS [rr]" are each one
byte.
3. For formats 5 and 6, the destination address "XL [rr]" and the source address "XL [rr]" are each two
bytes.
4. The DA and r source values for formats 7 and 8 are used to address program memory; the second set
of values, used in formats 9 and 10, are used to address data memory.
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