AMD LV-651 Computer Hardware User Manual


 
LV-651 User’s Manual I/O Port Pin Assignment
Floppy Port
39
A.2 <Floppy Port>
Connector: FDD
Type: 26-pin connector
Pin Description Pin Description
1 VCC 2 INDEX
3 VCC 4 DRV0
5 VCC 6 DSKCHG
7 DRV1 8 N/C
9 MTR1 10 MTR0
11 RPM 12 DIR
13 N/C 14 STEP
15 Ground 16 WRITE DATA
17 Ground 18 WRITE GATE
19 N/C 20 TRACK 0
21 N/C 22 WRPTR
23 Ground 24 RDATA-
25 Ground 26 SEL
A.3 <Serial Port>
Connector: COM1/2
Type: 9-pin D-sub male connector on bracket
Pin Description Pin Description
1 DCD- 6 DSR-
2 SIN- 7 RTS-
3 SO- 8 CTS-
4 DTR- 9 RI
5 Ground 10 N/C
10
1
9
2