IBM 6400 Setup Manual page 226

Pin Source of Data
12 Printer
13 Printer
14 Host
15
16
17
18 Printer
19
20
21
22
23
24
25
26
27
28
29
30
31 Host
32 Printer
33
34
35
36 Host
5–16 6400 Line Matrix Printers Setup Guide, Cabinet and Pedestal Models
Table 5–5. 1284 Signals (continued)
Compatible
PError
Select
nAutoFd
Signal Ground (PError, Select, nAck)
Signal Ground (Busy, nFault)
Signal Ground (nAutoFd, nSelectIn, nInit)
NFault
nSelectIn
Type of Mode
Nibble
AckDataReq
Xflag
Host Busy
Not Defined
Logic Gnd
Chassis Gnd
Peripheral Logic High
Signal Ground (nStrobe)
Signal Ground (Data 1)
Signal Ground (Data 2)
Signal Ground (Data 3)
Signal Ground (Data 4)
Signal Ground (Data 5)
Signal Ground (Data 6)
Signal Ground (Data 7)
Signal Ground (Data 8)
nInit
nDataAvail
Not Defined
Not Defined
Not Defined
1284 Active
Byte
AckDataReq
Xflag
HostAck
aDataAvail
1284 Active