cisin at xenosoft.com
Fri Apr 14 10:15:44 CDT 2017
On Fri, 14 Apr 2017, Peter Cetinski via cctalk wrote:
> The EI expansion port was originally called the Screen Printer port
> because that was the only accessory that connected directly to the
> TRS-80 bus.
Later, the Voice Output device (repackaged Votrax?) used the bus
Later, the Voice Input device used the bus connector.
After we (Elcompco) built a 4 port "Bus Extender" (with active
termination), we found that the Voice Input device had a hidden
undocumented pass-through of the bus. All essential to connecting an X-10
interface and being able to say, "LET THERE BE LIGHT!", with a response of
X-10 "all lights ON", and a voice responce of "BY YOUR COMMAND". Thus
demonstrating the level of practical applicability of a home computer.
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