Need Digital VT102 and Hewlett-Packard A1099B Keyboards

shoppa> Didn't all the VT1xx use the same keyboard, the one with the shoppa> stereo phone plug on the end? shoppa> That makes it easier, you just need any VT100-type keybaord. No. The VT100 (with the stereo plug) is fundamentally different from the VT2xx and later keyboards (with the 4 wire telephone handset plug). The VT2xx keyboards have an onboard microprocessor that does the keyboard scan and reports key-up and key-down events on a 4800 baud UART connection. It accepts commands in the reverse direction, for example to control autorepeat and the LEDs. The VT100 keyboard has a single data line that carries data both ways. And if I remember right, the terminal controls the scanning, with scan commands going out to the keyboard. paul