[cctalk] Re: 5150 cassette (Was: DLOAD BASIC command for Color Comp

On 2023-01-30 2:12 p.m., Fred Cisin via cctalk wrote:>>>> The 5150 had a cassette port!>>>> . . . The 5160 no longer had the cassette port.>>>> On Mon, 30 Jan 2023, Paul Berger via cctalk wrote:>>> The cassette port on the 5150 could also be used as a>>> Telecommunication Device for the Deaf (TDD) many years ago I made up>>> a ISA bus card with the same function as the cassette port for a>>> gentleman that wanted to move on from a 5150 but still needed the>>> cassette port for a TDD device.>>>> Interesting!>>>> Was that stand-alone and compatible with the ordinary TDD/TTY units?>> (and coupled to a modem)>> Or was that solely for communicating with other 5150s?>>>> Or was that to use the 5150 as a KSR terminal for a TDD/TTY handling>> the POT communication?>>>> -->> Grumpy Ol' Fred cisin(a)xenosoft.com>>> I don't recall all the details but I seem to recall that the cassette> interface was used to generate the modem tones and would be connected to> an acoustic coupler. I believe the software emulated a TDD/TTY but I> don't recall if it was Baudot or ACSII. It would not have been a stretch> to do it all in software as the rate is only 45 Baud and the tone> generation for the cassette interface was done in software.>> Paul.