VMS drivers

On Aug 28, 2015, at 12:34 PM, Jon Elson <elson at pico-systems.com> wrote: Hello, guys, While rummaging through recovered backups from my MicroVAX I found a few items that might be of interest to the group. I got an MDB mag tape interface (quite possibly the ONLY Pertec Unformatted controller ever made for Q-bus) that follows the MT-11 register format. There was no driver for this. I got a homebrew MT-11 driver for Unibus machines from somebody at work, and hacked it up to assemble for VMS 4.7 and adjust to the quirks of the MDB board (which were REALLY minor). I also have a driver for my Jupiter 7 for the MicroVAX. Thus used a DRV11-WA DMA interface with some wire-wrapped glue logic to adapt to the Jupiter's 50-pin interface bus. It is based on the stock DRV11-WA driver, with some additional logic to handle the handshakes between Jupiter and the DRV11. Additionally, I built a graphics library based on the NASA min-Vicar image processing suite, which was a hideous hack job that ran on the PDP-11. That used pre-assigned, numbered files. I generalized it to use normal VMS files of arbitrary size, but otherwise kept most of the original functions. I used the VMS table driven parser, tparse, to parse most of the commands. I also knew a fair bit about Versatec printers back then, if anybody ever wants to get one of those hideous machines running. If anybody is interested in these drivers, etc. let me know. Jon