I thought I might have had some notes of the S100 2716 eprom programmer I mentioned (dad just called it the eprom burner) somewhere, and sure enough I did. I'm surprised they didn't go along with all the peripherals and doco when the S100 machine was sold sometime in the late 80s.
It's on foolscap paper, an unwieldy paper size nowadays and I don't miss it. The burning code is 5 pages of z80 assembly, a few 2716 write timing diagrams, miscellaneous wiring diagrams and a rough block diagram of the thing, which I have just scanned here. It used an 8255 PPI: http://web.aanet.com.au/~malikoff/S100_2716_eprom_burner/S100_2716_programmer_block_diagram_sketch.png Steve
