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NSC800N Datasheet(PDF) 44 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # NSC800N
Description  NSC800TM High-Performance Low-Power CMOS Microprocessor
PDF  76 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

NSC800N Datasheet(HTML) 44 Page - National Semiconductor (TI)

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127 16-Bit Arithmetic (Continued)
DEC
rr
Decrement the contents of the 16-bit register rr
rr
w rr b 1
No flags affected
76543210
DEC BC
00
rp
1011
DEC DE
DEC HL
DEC SP
Timing
M cycles
1
T states
6
Addressing Mode
Register
76
5
4
3210
DEC IX (for NXe0)
11NX 11101
DEC IY (for NXe1)
00
1
0
1011
Timing
M cycles
2
T states
10 (4 6)
Addressing Mode
Register
128 Bit Set Reset and Test
REGISTER
SET
b r
Bit b in register r is set
Rb
w 1
No flags affected
76543210
11001011
11
b
r
Timing
M cycles
2
T states
8 (4 4)
Addressing Mode
BitRegister
RES
b r
Bit b in register r is reset
rb
w 0
No flags affected
76543210
11001011
10
b
r
Timing
M cycles
2
T states
8 (4 4)
Addressing Mode
BitRegister
BIT
b r
Bit b in register r is tested with the result put in the Z flag
Z
w rb
S Undefined
Z Inverse of tested bit
H Set
PV Undefined
N Reset
C NA
76543210
11001011
01
b
r
Timing
M cycles
2
T states
8 (4 4)
Addressing Mode
BitRegister
MEMORY
SET
b m1
Bit b in memory location m1 is set
m1b
w 1
No flags affected
76543210
1
1
0
0
1
0
1
1
SET b (HL)
11
b
1
10
Timing
M cycles
4
T states
15 (4 4 4 3)
Addressing Mode
BitRegister Indirect
76
5
4
3210
SET b (IXad) (for NXe0)
11NX 11101
SET b (IYad) (for NXe1)
11
0
0
1011
d
11
b
110
Timing
M cycles
6
T states
23 (4 4 3 5 4 3)
Addressing Mode
BitIndexed
RES
b m1
Bit b in memory location m1 is reset
m1b
w 0
No flags affected
76543210
1
1
0
0
1
0
1
1
RES b (HL)
1
0b1
1
0
Timing
M cycles
4
T states
15 (4 4 4 3)
Addressing Mode
BitRegister Indirect
76
5
4
3210
RES b (IXad) (for NXe0)
11NX 11101
RES b (IYad) (for NXe1)
11
0
0
1011
d
10
b
1
10
Timing
M cycles
6
T states
23 (4 4 3 5 4 3)
Addressing Mode
BitIndexed
44



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