Talking of the 380Z...

[Tony Duell]

Since the 380Z seems to be popular at the moment, does anyone have info 
on 2 bits that are not properly described in the Information File? 

The first is the dual cassette controller. The pinout of the 7 pin 
cassette socket is given, as of course is the schematic of the VDU board 
that contains the cassette circuitry. The controller seems to contain a 
couple of relays to control the recorders (were these powered from the 
system 5V line or a separate power supply?) and switching to allow either 
one recorder to be used, or two with one used for recording the other for 
playback. It's possible to make some guesses as to how it was wired, but 
some real details would be nice

The second is the SIO-2 board. This was a bit-banged serial port using, 
IIRC, 3 lines of the user port. 2 ouput lines for TxD and thr reader 
control relay, one input for RxD. At least knowing what port bits were 
used would be a help...

-tony