My first Mac

[Cameron Kaiser]

> 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.

I'm not aware of this either. In fact, my "force reboot" dongle is just an
S-video cable bought from WalMart with the reset pin hardwired to ground and
no special business otherwise.  It works just fine.

-- 
--------------------------------- personal: http://www.armory.com/~spectre/ ---
  Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com
-- Just another Sojourner of the Dispersion (1 Peter 1:1) ---------------------