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4 instruction types, 5 instruction descriptions – Epson 6200A User Manual

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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.