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RE: [N8VEM-S100:2258] My recently completed S-100 test setup

HI Jeff,

Very nice work!  I'm impressed with the detail put into covering the open AC terminal strips and fuses.
Adding the handles was another "above and beyond" move,  I like it!

My latest project might be a little off topic, but I hope the group does not mind a little "show and tell".

Recently, while fixing up a PET 2001, I had a need to just see what's happening on the bus.  I don't have CPU emulators for every CPU, so I tossed a few 74HCT374, a 74LS245 and a lot of LED's to work with my LPT port so I can control the bus.  Later versions of this jig will have headers for other CPU's, for now it handles just the 6502.  Nothing fancy, but it's this that has been eating my time.


Date: Sat, 18 Jan 2014 10:45:52 -0800
From: jgal...@optonline.net
To: n8vem...@googlegroups.com
Subject: [N8VEM-S100:2258] My recently completed S-100 test setup

Hi All,
  Andrew has asked us to post picture of our progress and I promised to to so when I completed parts of my project.  I attached an image of my recently completed S-100 test/development setup.  I already have a few S-100 chassis so I wanted something that was lighter & a little more handy to store & work with.  I decided to mount the parts on 3/4" plywood.  I used a Meanwell 7.5v 20a switching power supply as described by John M. It is adjusted up to 8v, but once I get the system running, I will experiment to see if every thing will run at 7.5v  ( I suspect it will).  Since I couldn't find a ± 15v or ±16v switching power supply, I decided to go with a Power One dual 15v 3a linear supply found on eBay.  The AC input is fused as are all of the DC voltages prior to connection to the 8 slot backplane.  I also included a solderless breadboard in case I was to try some parallel I/O interfacing or serial I/O interfacing.  Since the board is rear heavy, I mounted 2 handles on the board to make it easier to pickup & transport.  I realize this is no great breakthrough or anything but I wanted to share what I was doing. 
Jeff Galinat 

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