This is a VT180 right ?

On 10/22/2012 09:38 PM, Eric Smith wrote: Actually the 8085 version of the VT100 as the VT103 and some VT100s that got the same board. The total VT180 used the base VT100 (or 103) terminal board with a change in the paddle board for interboard IO. the VT180 is a complete Z80, 64K, 4 serial ports, 1793 FDC and a few other things like a a real interrupt structure and heartbeat clock (it's able to be run stand alone with a few simple mods). Its one of the few CP/M systems that actually runs using interrupts for IO. To make the above into the mythical Vt185 was to add the VT125 board set and the hyper scarce VT185 paddle board (the IO interface for the VT180 console, Vt125 and vt100). I have that as I was in the terminals and printing systems groupat DEC. This is why I have two, a vanilla VT180 and the 185. I also have two modded Vt180 boards running standalone with any terminal and one I souped up to run at 6mhz and added two sided capability via wire and bios mods for two side and 80 tracks using 3.5" floppy (they fit the RX180 drive boxes using drive adaptor plates 4 drives one box and 4x storage per drive 781KB). When the Vt180 is in terminal mode, the Vt180 passes data from the VT100 to the VT180 terminal port and of course the reverse. The (ep)roms did two things diagnostics at the terminal level and the VT180 level. The paddle board does a few things, share baud generation and rate for some of the ports on the VT180 and it also brings up the terminal reset signal to the VT180. This allows the VT100 setup function to set all the ports and the terminal specifics as well. The closest analogue is the Heath H19 terminal -> H89 computer. Allison