The MITS cassette wasn't actually that bad. Mine has been spot on since I used an oscilloscope to calibrate it.
I think the big problem was MITS offered multiple calibration instructions which ranged from using nothing but a screwdriver and the lights on the front panel to a voltmeter and if you could afford one, exacting instructions using a dual channel scope. The only reliable one is the scope. Cheers, Corey corey cohen uǝɥoɔ ʎǝɹoɔ > On Nov 3, 2015, at 10:57 AM, Jay Jaeger <cu...@charter.net> wrote: > >> On 11/2/2015 11:54 PM, d...@661.org wrote: >> >> As I finally complete my Micro-Altair kit from Briel Computers, my >> thoughts turn to the question of how I can get an audio tape interface >> working on this machine. >> >> I understand that the MITS tape controller is essentially a serial port >> with a simple modem bolted on the rear. > > Yes, exactly - but IIRC it was TTL level. And didn't work all that > well. It wasn't too long before I acquired a Processor Technology CUTS > tape interface, which worked only slightly better. At one point I > re-purposed said MITS tape interface serial port (removing the tape > interface portion) and used it to connect to my Atari 800 serial port, > providing printer and disk services to the Atari. > > JRJ
