MDT10P22(DF)

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P. 9

2007/8

Ver. 1.6

9. Instruction Set

Instruction Code

Mnemonic

Operands

Function

Operating

Status

010000 00000000

NOP

No operation

None

010000 00000001

CLRWT

Clear Watchdog timer

0→WT

TF, PF

010000 00000010

SLEEP

Sleep mode

0→WT, stop OSC TF, PF

010000 00000011

TMODE

Load W to TMODE register

W→TMODE

None

010000 00000100

RET

Return

Stack→PC

None

010000 00000rrr

CPIO

R

Control I/O port register

W→CPIO

r

None

010001 1rrrrrrr

STWR

R

Store W to register

W→R

None

011000 trrrrrrr

LDR

R, t

Load register

R→t

Z

111010 iiiiiiii

LDWI

I

Load immediate to W

I→W

None

010111 trrrrrrr

SWAPR R, t

Swap halves register

[R(0~3)

↔R(4~7)]

→t

None

011001 trrrrrrr

INCR

R, t

Increment register

R + 1→t

Z

011010 trrrrrrr

INCRSZ R, t

Increment register, skip if

zero

R + 1→t

None

011011 trrrrrrr

ADDWR R, t

Add W and register

W + R→t

C, HC, Z

011100 trrrrrrr

SUBWR R, t

Subtract W from register

R ﹣W→t

(R+/W+1→t)

C, HC, Z

011101 trrrrrrr

DECR

R, t

Decrement register

R ﹣1→t

Z

011110 trrrrrrr

DECRSZ R, t

Decrement register, skip if

zero

R ﹣1→t

None

010010 trrrrrrr

ANDWR R, t

AND W and register

R ∩ W→t

Z

110100 iiiiiiii

ANDWI

i

AND W and immediate

i ∩ W→W

Z

010011 trrrrrrr

IORWR R, t

Inclu. OR W and register

R ∪ W→t

Z

110101 iiiiiiii

IORWI

i

Inclu. OR W and immediate i ∪ W→W

Z

010100 trrrrrrr

XORWR R, t

Exclu. OR W and register

R ♁ W→t

Z

110110 iiiiiiii

XORWI

i

Exclu. OR W and

immediate

i ♁ W→W

Z

011111 trrrrrrr

COMR

R, t

Complement register

/R→t

Z

010110 trrrrrrr

RRR

R, t

Rotate right register

R(n) →R(n-1), C

→R(7), R(0)→C

C

010101 trrrrrrr

RLR

R, t

Rotate left register

R(n)→r(n+1),

C→R(0), R(7)→C

C

010000 1xxxxxxx

CLRW

Clear working register

0→W

Z

010001 0rrrrrrr

CLRR

R

Clear register

0→R

Z

0000bb brrrrrrr

BCR

R, b

Bit clear

0→R(b)

None