
Chapter 5
I/O Information
©
National Instruments Corporation
5-7
VXIpc 770/870B Series User Manual
Figure 5-4.
Parallel Port Connector Location and Pinout
Table 5-5.
Parallel Port Connector Signals
Pin
Default Configuration (LPT)
Floppy Configuration
in
Chapter 3,
Signal Name
Signal Description
Signal Name
Signal Description
1
BUSY
Device Busy
MTR1*
Motor on Disk 1
2
SLCT
Select
WGATE*
Write Gate
3
ACK*
Acknowledge
DS1*
Drive Select 1
4
FAULT*(ERROR*)
Fault
HDSEL*
Head Select
5
PAPEREND
Paper End
WDATA*
Write Disk Data
6
PD0
Data Bit 0
Index*
Index Pulse Input
7
PD1
Data Bit 1
TRK0*
Track 0
8
PD2
Data Bit 2
WRTPRT*
Write Protected
9
PD3
Data Bit 3
RDATA*
Read Disk Data
Parallel Port
1
18
19
36