80-Bus News

  

November–December 1984, Volume 3, Issue 6

Page 13 of 55

EPROM PROGRAMMER
fig. 3)   Using a PIO



EPROM PROGRAMMER
fig. 4)   PIO Cable Connections

Core NoSignal
PIO2
Address
28H+29H
1A5
2A4
3A6
4A3
5A7
6A2
8A1
10A0
13A8
15A9
17A10
18GROUND
19A11
21A12
23A13
24A15
25A14

PIO3
Address
2CH+2DH
1D5
2D4
3D6
4D3
5D7
6D2
8D1
9BSTRB
10D0
13OE
15PGM (active high)
17PGM (active low)
18GROUND

Page 13 of 55