Well, looky here!
Up top of my desk was a printed copy of the 1983 manual for GSPL version 2.1, for the 6809 and FLEX. Published by Workman and Associates.
The master was printed on an MX-80 with the aftermarket Graftrax ROM, using a formatting program I wrote (in GSPL, naturally) and bitmap fonts I created*.
I think we sold two or three copies of the compiler - not exactly a lucrative venture, but I had after all basically created it for my own use and as an educational project (the official compiler-writing course was the following year). A couple of years later, I met one of the customers, who'd used it to develop the firmware for an embedded computer to control a press used in manufacturing abrasive wheels, as I recall.
I never did get around to taking the LISP interpreter I wrote in 6809 assembly language and turning it into a ROM cartridge for the TRS-80 Color.
Update: In lower strata, I find one-each one-off audio CD, digitized from the Captain Jack and the Mermaid tape by Meg Davis.
And!
My copy of the technical manual for a moderately complex piece of automated test equipment I built, on a shoestring budget, for Endevco. In 1981. I have a vague recollection of seeing that box still in their lab a few years ago, though I don't think it had been used in a great many years. Had a 6502, of course, an 8279 keyboard/display controller, a Datel ADC module (because it was available, and 12-bit ADC chips were mighty scarce in 1981), much signal conditioning and interface stuff, a bunch of mercury-wetted reed relays, some solenoid valves, two vacuum regulators, and various power supplies (including a 90V battery).
Me: doing embedded systems stuff for the aerospace industry since I was practically a kid.
* And we walked twenty miles to the schoolhouse, barefoot and uphill both ways! (Filk reference.)
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