P2 interface circuit diagram Winchester-DISK
Hello Jaume - first university:
I've been (and still currently) busy with some university work. There are still five deadlines to meet between tomorrow and January 8th.
I think - first the work at the university is to be done successfully. Then some free time and then the historical computers - next year.
Here the circuit diagram (SASI DISK):
I got the plan from Wolfgang Jobs (is not related to the apple inventor), I already know it before studying at the Ruhr University Bochum (RUB).
The interface is developed on a fixed 80h port.
That means 80h-8Fh ports are recognized by the card.
In the P2 electronics cage 9 is provided for the slot. The standard on the P2 motherboard is from slot 9 (96 VGL - C series) the external signals to the 37-pin socket. From the back there is a connection to the plate housing via a ribbon cable.
The circuit diagram can be downloaded as a document below.
I will present more photos (Interface card) and software handling (integration in a P2 TPA 100h cp / m) soon.
Regards