Bbc Model B Circuit Diagram. Model a and model b. The signal through the yellow capacitor behind the socket which i can see marked as c35 on your board as well as on the circuit diagram.
Discuss both original and modern hardware for the bbc microelectron. 91 circuit block diagram 92 assembly drawing 93 case lower assembly drawing 94 main pcb layout 95 main pcb circuit diagram issue 9 issue 7 board as full foldout 96 keyboard circuit diagram 97 power supply circuit diagram 98 parts list for b. Acorn system 1 home made replica.
If you follow the circuit diagram from one side.
Corrections to the tribbeck circuit diagram for the bbc b. Bbc model b 32k issue 7 sidewise rom board with 16k ram. Downloaded from chriss acorns. Its components are shown by the pictorial to be easily identifiable.