Simulation vs breadboarding (was Replacing failed powersupplies on qbus PDP-11s)

On Thursday 05 February 2009 07:55:40 pm William Donzelli wrote: Heh. Somewhere in my files I have a schematic for a computer, "Aquarius AS-20" (I'm not 100% certain about the model number) which was an Apple II clone. If I'm remembering right it had a z80 on the board, along with 64k, and some other stuff that cost extra with the original setup. For a while there I was seeing a whole *bunch* of that sort of thing, coming out of "Little Taiwan" in Philly, until the guy who was importing that stuff got slapped down, probably around the same time Franklin did. I'm thinking this was maybe back around '84, maybe early '85. The name "Beltron" comes to mind, too, and I can remember machines that were almost an exact copy except that when you powered them up "Beltron II" showed up on the screen. Later on I think that same company sold peecee clone hardware. -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, a critter that can be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin