CMOS 4-bit Single Chip Microcomputer Core CPU Manual

S1C6200/6200A CORE CPU MANUAL EPSON 27
3 INSTRUCTION SET
3.4 Instruction Types
Instructions are divided into six types according to the size of the operand.
(I) MSB LSB
ex: JP
CALL
LBPX
s
s
MX,e
etc.
Op-code 8-bit operand
(II) MSB LSB
ex: ADD
LD
FAN
r, i
r, i
r, i
etc.
Op-code 6-bit operand
(III)
MSB LSB
ex: PSET p
Op-code 4-bit operand
(IV)
MSB LSB
ex: SET
LD
INC
F, i
r, q
Mn
etc.
Op-code
2-bit
operand
(V)
MSB LSB
ex: ACPX
LD
PUSH
MX, r
XH, r
r
etc.
Op-code
(VI)
ex: JPBA
POP
INC
YL
X
etc.
MSB
LSB
Op-code 5-bit operand
3.5 Instruction Descriptions
This section describes S1C6200/6200A instructions in alphabetical order.