Z89323 Zilog., Z89323 Datasheet - Page 43
Z89323
Manufacturer Part Number
Z89323
Description
16-BIT DIGITAL SIGNAL PROCESSORS
Manufacturer
Zilog.
Datasheet
1.Z89323.pdf
(61 pages)
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DS95DSP0101 Q4/95
D15 D14 D13 D12 D11 D10 D9
D15 D14 D13 D12 D11 D10 D9
D15 D14 D13 D12 D11 D10 D9
Figure 40. Flag Modification Format
D8
Figure 39. Branching Format
P R E L I M I N A R Y
D8
D8
D7
D7
D7
D6
D6
D6
D5
D5
D5
D4
D4
D4
D3
D3
D3
D2
D2
D2
D1
D1
D1
D0
D0
D0
x x 1 0
x x 1 1
x 1 x 0
x 1 x 1
1 x x 0
1 x x 1
x x x x
Opcode
1 0 0 1 0 1 0 Mod
Condition Codes
0 0 0 0 TRUE
0 0 0 1 ----
0 0 1 0 UO0=0
0 0 1 1 UO1=0
0 1 0 0 C=0
0 1 0 1 Z=0
0 1 1 0 OV=0
0 1 1 1 N=0
1 x x x - - - -
0 0 0 0 TRUE
0 0 0 1 - - - -
0 0 1 0 UO0=1
0 0 1 1 UO1=1
0 1 0 0 C=1
0 1 0 1 Z=1
0 1 1 0 OV=1
0 1 1 1 N=1
1 x x x - - - -
2nd Word
1st Word
Condition
0 = Negative
Condition
1 = Positive Condition
Opcode
0 1 0 0 1 1 0
Branch
0 1 0 0 1 0 0 Call
Branch Address
x x x x
16-B
Reset C flag
Set
Reset IE Flag
(Interrupt enable)
Set
Reset OP Flag
(Overflow protection)
Set
IT
D
IGITAL
IE Flag
OP Flag
C flag
S
IGNAL
Z89323/373/393
P
ROCESSORS
43
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