daver2
10k Member
Today horse racing - tomorrow STARTREK on one line!
It would be good to get some photographs of how the cards are cabled together at some point when you have a spare minute or ten. I think I have worked it out from the cards though as follows:
The RAM and ROM cards are connected together and to CPU/J3 via 2*20 way ribbon cable.
The I/O card is connected to CPU/J2 via 2*20 way ribbon cable.
The two 2*13 way connectors on the I/O card are connected to the two tape drives - one to each.
The connector 'on its own' on the I/O card is connected to the outside world via the rear of the case.
The two 2*10 way ribbon cables on the CPU card (J1 and J4) are connected to the keyboard and the display (not sure which way round though) - but I am going to hazard a guess that J1 is the keyboard and J4 is the display (based on the number of connections to the connectors).
Dave
It would be good to get some photographs of how the cards are cabled together at some point when you have a spare minute or ten. I think I have worked it out from the cards though as follows:
The RAM and ROM cards are connected together and to CPU/J3 via 2*20 way ribbon cable.
The I/O card is connected to CPU/J2 via 2*20 way ribbon cable.
The two 2*13 way connectors on the I/O card are connected to the two tape drives - one to each.
The connector 'on its own' on the I/O card is connected to the outside world via the rear of the case.
The two 2*10 way ribbon cables on the CPU card (J1 and J4) are connected to the keyboard and the display (not sure which way round though) - but I am going to hazard a guess that J1 is the keyboard and J4 is the display (based on the number of connections to the connectors).
Dave