Datasheet

ST6200C/ST6201C/ST6203C
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INSTRUCTION SET (Cont’d)
Arithmetic and Logic. These instructions are
used to perform arithmetic calculations and logic
operations. In AND, ADD, CP, SUB instructions
one operand is always the accumulator while, de-
pending on the addressing mode, the other can be
either a data space memory location or an imme-
diate value. In CLR, DEC, INC instructions the op-
erand can be any of the 256 data space address-
es. In COM, RLC, SLA the operand is always the
accumulator.
Table 16. Arithmetic & Logic Instructions
Notes:
X,Y Index Registers
V, W Short Direct Registers
∆ Affected
# Immediate data (stored in ROM memory)
* Not Affected
rr Data space register
Instruction Addressing Mode Bytes Cycles
Flags
ZC
ADD A, (X) Indirect 1 4
∆∆
ADD A, (Y) Indirect 1 4
∆∆
ADD A, rr Direct 2 4
∆∆
ADDI A, #N Immediate 2 4
∆∆
AND A, (X) Indirect 1 4
∆∆
AND A, (Y) Indirect 1 4
∆∆
AND A, rr Direct 2 4
∆∆
ANDI A, #N Immediate 2 4
∆∆
CLR A Short Direct 2 4
∆∆
CLR r Direct 3 4 * *
COM A Inherent 1 4
∆∆
CP A, (X) Indirect 1 4
∆∆
CP A, (Y) Indirect 1 4
∆∆
CP A, rr Direct 2 4
∆∆
CPI A, #N Immediate 2 4
∆∆
DEC X Short Direct 1 4
∆
*
DEC Y Short Direct 1 4
∆
*
DEC V Short Direct 1 4
∆
*
DEC W Short Direct 1 4
∆
*
DEC A Direct 2 4
∆
*
DEC rr Direct 2 4
∆
*
DEC (X) Indirect 1 4
∆
*
DEC (Y) Indirect 1 4
∆
*
INC X Short Direct 1 4
∆
*
INC Y Short Direct 1 4
∆
*
INC V Short Direct 1 4
∆
*
INC W Short Direct 1 4
∆
*
INC A Direct 2 4
∆
*
INC rr Direct 2 4
∆
*
INC (X) Indirect 1 4
∆
*
INC (Y) Indirect 1 4
∆
*
RLC A Inherent 1 4
∆∆
SLA A Inherent 2 4
∆∆
SUB A, (X) Indirect 1 4
∆∆
SUB A, (Y) Indirect 1 4
∆∆
SUB A, rr Direct 2 4
∆∆
SUBI A, #N Immediate 2 4
∆∆
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