KS57C2308/P2308/C2316/P2316
SAM47 INSTRUCTION SET
5-69
LDI
— Load Data Memory and Increment
LDI
dst,src
Operation:
Operand
Operation Summary
Bytes
Cycles
A,@HL
Load indirect data memory to A; increment register L
contents and skip on overflow
1
2 + S
Description:
The contents of a data memory location are loaded into the accumulator, and the contents of the
register L are incremented by one. If an overflow occurs (e.g., if the resulting value in register L
is 0H), the next instruction is skipped. The contents of data memory and the carry flag value are
not affected.
Operand
Binary Code
Operation Notation
A,@HL
1
0
0
0
1
0
1
0
A
←
(HL), then L
←
L+1;
skip if L = 0H
Example:
Assume that register pair HL contains the address 2FH and internal RAM location 2FH contains
the value 0FH:
LD
HL,#2FH
LDI
A,@HL
; A
←
(HL) and L
←
L+1
JPS
XXX
; Skip
JPS
YYY
; H
←
2H and L
←
0H
The instruction “JPS XXX” is skipped since an overflow occurred after the “LDI A,@HL” and the
instruction “JPS YYY” is executed.
Summary of Contents for KS57C2308
Page 30: ...ADDRESS SPACES KS57C2308 P2308 C2316 P2316 2 22 NOTES ...
Page 168: ...SAM47 INSTRUCTION SET KS57C2308 P2308 C2316 P2316 5 94 NOTES ...
Page 170: ......
Page 206: ...POWER DOWN KS57C2308 P2308 C2316 P2316 8 8 NOTES ...
Page 210: ...RESET KS57C2308 P2308 C2316 P2316 9 4 NOTES ...
Page 222: ...I O PORTS KS57C2308 P2308 C2316 P2316 10 12 NOTES ...
Page 272: ...LCD CONTROLLER DRIVER KS57C2308 P2308 C2316 P2316 12 24 NOTES ...
Page 280: ...SERIAL I O INTERFACE KS57C2308 P2308 C2316 P2316 13 8 NOTES ...
Page 294: ...MECHANICAL DATA KS57C2308 P2308 C2316 P2316 15 2 NOTES ...
Page 310: ...KS57P2308 P2316 OTP KS57C2308 P2308 C2316 P2316 16 16 NOTES ...
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