sh6631a SinoWealth Micro-Electronics Corp. Ltd, sh6631a Datasheet - Page 14

• Manufacturer Part Number: sh6631a
• Description: Mask 4-bit Microcontroller
• Manufacturer: SinoWealth Micro-Electronics Corp. Ltd

Instruction Set
All instructions are one cycle and one-word instructions. The characteristics are memory-oriented operation.
Arithmetic and Logical Instructions
Accumulator Type
Immediate Type
* In the assembler ASM66 V1.0, EORIM mnemonic is EORI. However, EORI has the same operation identical with EORIM.
Decimal Adjust
Transfer Instruction
The same is true for the ORIM with respect to ORI, and ANDIM with respect to ANDI.
ADC
ADCM
ADD
ADDM
SBC
SBCM
SUB
SUBM
EOR
EORM
SHR
ADI
ADIM
SBI
SBIM
EORIM
ORIM
ANDIM
OR
ORM
AND
ANDM
LDA
STA
LDI
Mnemonic
Mnemonic
Mnemonic
Mnemonic
DAA X
DAS X
X (, B)
X (, B)
X (, B)
X (, B)
X (, B)
X (, B)
X (, B)
X (, B)
X (, B)
X (, B)
X (, B)
X (, B)
X (, B)
X (,B)
X (, B)
X (, B)
X, I
X, I
X, I
X, I
X, I
X, I
X, I
X, I
11110 0000 000 0000
00000 0bbb xxx xxxx
00000 1bbb xxx xxxx
00001 0bbb xxx xxxx
00001 1bbb xxx xxxx
00010 0bbb xxx xxxx
00010 1bbb xxx xxxx
00011 0bbb xxx xxxx
00011 1bbb xxx xxxx
00100 0bbb xxx xxxx
00100 1bbb xxx xxxx
00101 0bbb xxx xxxx
00101 1bbb xxx xxxx
00110 0bbb xxx xxxx
00110 1bbb xxx xxxx
11001 0110 xxx xxxx
11001 1010 xxx xxxx
00111 0bbb xxx xxxx
00111 1bbb xxx xxxx
01000 iiii xxx xxxx
01001 iiii xxx xxxx
01010 iiii xxx xxxx
01011 iiii xxx xxxx
01100 iiii xxx xxxx
01101 iiii xxx xxxx
01110 iiii xxx xxxx
01111 iiii xxx xxxx
Instruction Code
Instruction Code
Instruction Code
Instruction Code
AC; Mx ← Decimal adjust for add.
AC; Mx ← Decimal adjust for sub.
14
AC
AC, Mx ← Mx + AC + CY
AC
AC, Mx ← Mx + AC
AC
AC, Mx ← Mx + -AC + CY
AC
AC, Mx ← Mx + -AC + 1
AC
AC, Mx ← Mx ⊕ AC
AC
AC, Mx ← Mx | AC
AC
AC, Mx ← Mx & AC
0 → AC [3]; AC [0] →CY;
AC shift right one bit
AC
AC, Mx ← Mx + I
AC
AC, Mx ← Mx + -I + 1
AC, Mx ← Mx ⊕ I
AC, Mx ← Mx I I
AC, Mx ← Mx & I
AC
Mx
AC, Mx ← I
← AC
← Mx + AC + CY
← Mx + AC
← Mx + -AC + CY
← Mx + -AC + 1
← Mx ⊕ AC
← Mx | AC
← Mx & AC
← Mx + I
← Mx + -I +1
← Mx
Function
Function
Function
Function
Flag Change
Flag Change
Flag Change
Flag Change
SH6631A
CY
CY
CY
CY
CY
CY
CY
CY
CY
CY
CY
CY
CY
CY
CY