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!:toto/Tlml..DJLE.)_(
~t
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l
~_{
C!nn
Symbo I Tab 1 e
( sJinmol
J
I
Lebel { l!E
)
Besa {
Ill nary
)
ldth
12
Symbol
Type
Pet tern/Start
Stop
Bl'TE 0
pattern
0001
Bl'TE 1
pattern
0010
BVTE 2
pettern
0100
BYTE 3
pet tern
1000
r
LON HORD
pet tern
0011
nIDDLE HORD
pattern
0110
HIGH
HORD
pettern
1100
LOH 3 l!YTES
pattern
0111
HIGH 3 BYTES
pattern
1110
DOUBLE HORD
pet tern
1111
~
Figure 2-4. Symbol Table for the BE Label
Table 2-1. Description of the Status Bits
Bit
Status
Signals
0
D/LC
1
M/LIO
2
W/LR
3
IIlDA
Analyzing the Intel 80386DX
2-4
Description
Signal is high for a data cycle and low for a control cycle.
Signal is
high
for memory and low for 1/0.
Signal is
high
for a write cycle and low for a read.
Signal goes
high
when the microprocessor
has
relinquished
control of the bus.
HP 103140
80386DX Preprocessor Interface
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