W83977G Winbond Electronics Corp America, W83977G Datasheet - Page 178

• Manufacturer Part Number: W83977G
• Description: W83877TF plus KBC, CIR, RTC, Pb-free
• Manufacturer: Winbond Electronics Corp America

16.2 Parallel Port Extension 2FDD
16.3 Four FDD Mode
W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
MOB2/BUSY
HEAD2/ERR
STEP2/SLIN
TRK02/PD1
RWC2/AFD
MOA2/PD6
WE2/SLCT
DSB2/ACK
DSA2/PD7
DCH2/PD4
RDD2/PD3
DIR2/INIT
IDX2/PD0
WP2/PD2
WD2/PE
PD5
STB
W83977F
MOB
MOA
DSA
DSB
Parallel Port Extension 2FDD Connection Diagram
13
25
12
24
11
23
10
22
21
20
19
18
17
16
15
14
9
8
7
6
5
4
3
2
1
PRINTER PORT
JP13
G1
A1
B1
G2
A2
B2
74LS139
-170
1Y0
1Y1
1Y2
1Y3
2Y0
2Y1
2Y2
2Y3
7407(2)
HEAD2
TRK02
DSB2
MOA2
DCH2
RDD2
WP2
WE2
WD2
STEP2
DIR2
MOB2
IDX2
RWC2
DSA2
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
EXT FDC
JP 13A
DSA
MOC
DSB
DSC
DSD
MOA
MOB
MOD
33
31
29
27
25
23
21
19
17
15
13
11
9
7
5
3
1