Tandy PC-6 - Theory of Operation; Block Diagram

THEORY OF OPERATION
Block Diagram
KEYBOARD
a1"Va6, d1"Vd6
b1"Vb6, e1 "Ve6
c1 "Vc6, RD"V R14
Km1"VKm12
DOT-MATRIX DISPLAY
5 x 7 dots, 24 digits
a7"Va12, d7"Vd12
b7"Vb12, e7"Ve12
c7"Vc12, RD"VR14
D1-D8,OP, CE, C1, C2
GATE ARRAY
IC4
MB64H193
RAM IC3
HM6264ALFP
OPTIONS
26-3671
26-3651
CMT 26-3652
26-3652
NOTE: Only one of 2 options can be connected at a time.
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