HYUNDAI MicroElectonics
74
3. 16-BIT OPERATION
NO.
MNEMONIC
OP
CODE
BYTE
NO
CYCLE
NO
OPERATION
FLAG
NVGBHIZC
1
ADDW dp
1D
2
5
16-Bits add without carry
YA
( YA )
( dp +1 ) ( dp )
NV--H-ZC
2
CMPW dp
5D
2
4
Compare YA contents with memory pair contents :
(YA)
(dp+1)(dp)
N-----ZC
3
DECW dp
BD
2
6
Decrement memory pair
( dp+1)( dp)
( dp+1) ( dp)
1
N-----Z-
4
INCW dp
9D
2
6
Increment memory pair
( dp+1) ( dp)
( dp+1) ( dp )
1
N-----Z-
5
LDYA dp
7D
2
5
Load YA
YA
( dp +1 ) ( dp )
N-----Z-
6
STYA dp
DD
2
5
Store YA
( dp +1 ) ( dp )
YA
--------
7
SUBW dp
3D
2
5
16-Bits subtract without carry
YA
( YA )
( dp +1) ( dp)
NV--H-ZC
4. BIT MANIPULATION
NO.
MNEMONIC
OP
CODE
BYTE
NO
CYCLE
NO
OPERATION
FLAG
NVGBHIZC
1
AND1 M.bit
8B
3
4
Bit AND C-flag : C
( C )
( M .bit )
-------C
2
AND1B M.bit
8B
3
4
Bit AND C-flag and NOT : C
( C )
( M .bit )
-------C
3
BIT dp
0C
2
4
Bit test A with memory :
MM----Z-
4
BIT !abs
1C
3
5
Z
( A )
( M ) , N
( M
7
) , V
( M
6
)
5
CLR1 dp.bit
y1
2
4
Clear bit : ( M.bit )
“
0
”
--------
6
CLRA1 A.bit
2B
2
2
Clear A bit : ( A.bit )
“
0
”
--------
7
CLRC
20
1
2
Clear C-flag : C
“
0
”
-------0
8
CLRG
40
1
2
Clear G-flag : G
“
0
”
--0-----
9
CLRV
80
1
2
Clear V-flag : V
“
0
”
-0--0---
10
EOR1 M.bit
AB
3
5
Bit exclusive-OR C-flag : C
( C )
⊕
( M .bit )
-------C
11
EOR1B M.bit
AB
3
5
Bit exclusive-OR C-flag and NOT : C
( C )
⊕
(M .bit)
-------C
12
LDC M.bit
CB
3
4
Load C-flag : C
( M .bit )
-------C
13
LDCB M.bit
CB
3
4
Load C-flag with NOT : C
( M .bit )
-------C
14
NOT1 M.bit
4B
3
5
Bit complement : ( M .bit )
( M .bit )
--------
15
OR1 M.bit
6B
3
5
Bit OR C-flag : C
( C )
( M .bit )
-------C
16
OR1B M.bit
6B
3
5
Bit OR C-flag and NOT : C
( C )
( M .bit )
-------C
17
SET1 dp.bit
x1
2
4
Set bit : ( M.bit )
“
1
”
--------
18
SETA1 A.bit
0B
2
2
Set A bit : ( A.bit )
“
1
”
--------
19
SETC
A0
1
2
Set C-flag : C
“
1
”
-------1
20
SETG
C0
1
2
Set G-flag : G
“
1
”
--1-----
21
STC M.bit
EB
3
6
Store C-flag : ( M .bit )
C
--------
22
TCLR1 !abs
5C
3
6
Test and clear bits with A :
A
( M ) , ( M )
( M )
( A )
N-----Z-
23
TSET1 !abs
3C
3
6
Test and set bits with A :
A
( M ) , ( M )
( M )
( A )
N-----Z-