NEC VERSA 4000 Service Manual page 64

Table Appendix A-6 Expansion Connector Pin Assignments
Pin
58
59
60
61
62
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
Connector Locations and Pin Assignments
Signal
Keyboard Data
Reserved
+12V Sys
Floppy Track 0
Through
+12V Sys
CRT Red
CRT Green
SA17
SA18
SA19
MENCS16
Refresh
Printer-Strobe
Printer-Acknowlg
Printer-Busy
Printer-P End
Printer Select
Printer-Auto FD
Printer -Error
Printer-Initialize
Printer Select In
FD Head Select
FD-Direction In
FD-Boot Select
FD-Low Density
FD-Write Enable
FD-Step
LA23
LA22
A-5