3 Jan
2007
3 Jan
'07
6:11 p.m.
I'll ocnfirm the Mac Plus has the RJ11 connetor
for the keyboard and a
DE9 for the mouse (but miniDIN-8 conenctors for the serial ports, I
thought the older machines had DE9s for those too).
They do. The Plus was the first one with mini-DIN serial ports.
connectors for
the keyboard and DE9s for the mouse. Later Macs (SE
and newer, up until USB) and probably the Apple IIGS had ADB
peripherals - the connector looks much like an S-Video connector -
mini-DIN with 4 pins and, IIRC, a plastic tab in the male connectors
to trip a switch (termination?) inside the female connectors when
plugged together.
Does it? I know the 3 pin miniDIN used on the Localtalk network has a
switch in the socket that conencts a terminating resistor, and which is
openned when the plug is inserted, but I've never seen any evidence of
this on ADB. But admittedly I've never tried to trace out schematics of
an ADB'ed Mac.