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Acorn BBC Master Series - Page 57

Acorn BBC Master Series
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Master Series Service Manual
SK12 analogue in
15-way D-type
1 +5V 9 light pen strobe (notLPSTB)
2 0V
10 digital switch input (I1)
3 0V 11 voltage reference (VREF)
4 CH3 12 CH2
5 analogue ground 13 digital switch input (I0)
6 0V 14 voltage reference (VREF)
7 CH1 15 CH0
8 analogue ground
SKI ECONET
5-pin DIN
56
Issue 1