HX20 (was: Re: Just bought this . . .)

From: Eric Smith <eric_at_brouhaha.com>
Date: Thu Dec 10 19:35:38 1998

Tony Duell wrote:
> The HX20 printer is quite interesting. It's got 4 print solenoids/pins on
> a little 'shuttle', spaced 5 characters apart in the same horizontal
> line. A motor/scroll cam assembly wobbles this backwards and forwards
> across the paper and moves the paper up one dot line for ever complete
> movement of the shuttle. The HX20 electronics sends appropriately timed
> pulses to the solenoids to put dots on the paper. It is an impact
> printer, of course.

The Rockwell AIM-65 printer worked the same way. IIRC, one of the manuals
contained the source code for the monitor ROM, which included the printer
routines.
Received on Thu Dec 10 1998 - 19:35:38 GMT