STB Serial/Parallel Adapter

6FF1.ADF STB Serial/Parallel Adapter

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Based on content by William R. Walsh (original HERE).


STB Serial/Parallel Adapter FCC ID EKS56APS2SERPAR

STB Serial & Parallel Adapter

P1 Parallel port
P2 8-pin serial port
U1 Silicon Logic LD805C (LPT ctrl.?)
U3-U17 PALs
U15 Startech ST16C550P UART
W1 2x2-pin jumper
X1 1.843200 MHz

P2 8-pin serial port - Apple-style? (not verified)
W1 2x2-pin jumper. Set as shown. Function unknown.

STB Systems apparently still had a fascination with their green dots. What are they for?
Ed. Tom: Copper thieving once again?


Experiences

I finally installed this adapter in a 9585-0X0 running Windows NT 3.1. It configured easily as COM2 and LPT2. The parallel port will handle bidirectional communication if you enable it in system programs. I used the parallel port to print to an HP OfficeJet 9130 from NT 3.1 (the OfficeJet was able to emulate an early LaserJet right out the box, so that's how I got NT 3.1 to print to it.).

I have also run a Costar serial label printer from the COM port. The label printer already had a cable on it for an Apple Macintosh serial port, so using it with this adapter did not require any fiddling around.

Content created and/or collected by:
Louis F. Ohland, Peter H. Wendt, David L. Beem, William R. Walsh, Tatsuo Sunagawa, Tomáš Slavotínek, Jim Shorney, Tim N. Clarke, Kevin Bowling, and many others.

Ardent Tool of Capitalism is maintained by Tomáš Slavotínek.
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