OMEN ALPHA
=========
OMEN Computers - - -
https://github.com/osmibity
- - - Page: 7
SYSTEM APPLICATION CONNECTOR
=========================
This connector is on the upper edge of board. Pin 1 is on the left side.
Pins:
1
/WR
2
D0
3
D1
4
D2
5
D3
6
D4
7
D5
8
D6
9
D7
10
A0
11
A1
12
A2
13
/RD
14
IO1 --- 20h
–
27h
15
IO2 --- 10h
–
17h
16
IO3 --- 30h
–
37h
17
IO4 --- 08h
–
0Fh IOx signals are decoded by 74138
18
IO5 --- 28h
–
2Fh
19
IO6 --- 18h
–
1Fh
20
IO7 --- 38h
–
3Fh
21
Vcc
22
GND
23
RST7.5 -- see JP7
24
CLK
25
RESET -- Output signal
26
READY -- Pull it low to force a WAIT state
27
/BUSRQ /not connected on Alpha/
28
/BUSACK /not connected on Alpha/
29
/not connected on Alpha/
30
/not connected on Alpha/
