G'day All, my current project is a Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card design and build. technically it's stupidly straight forward. The Tandy 1000 ex/hx PLUS Expansion connector is a 62 Pin IDC style connector which is electrically compatible with the IBM 8-Bit ISA edge card's. It wont even need any components other than a Right angle female IDC header & two 8-Bit ISA Slots.
So rather than Bodge something up on Proto-Board, I thought I'd design something properly in Eagle and use that as an excuse to learn Eagle at the same time. I've found some excellent tutorials on Eagle from
Jeremy Blum and I've had lots of fun downloading loads of parts Libraries (I got the entire Element 14 collection) and trawling thru them.
I'm kinda stuck atm tho - part of the issue is the pc-con library has the 8-Bit ISA Edge connector part but not the 8-Bit ISA Slot; It has the 16-Bit ISA Slot tho.
The other challenge I've found is the IDC style connector, my Riser Board needs a 62-Pin right angle Female Header, but there isnt one in all the libraries I have.
So I thought maybe I could customise the 16-Bit ISA Slot (chop the smaller 16-Bit extension off the end) and also cut down a larger header to 62 Pins. However i'm not finding any good tutorials on how to do this - I did find one but the version of Eagle being used was v5 (iirc) and it merely confused me as the UI seems to have changed quite a bit in some areas. Any ideas from the Eagle pro's here?
Anyhoo, here's the 8-Bit ISA specs:
http://www.hamradio.cc/computer/isa_bus_pinouts.phpand the Tandy 1000ex Technical reference Manual:
ftp://ftp.oldskool.org/pub/tvdog/tandy1000/documents/extech.zipFor Parts Supply, I cant find and caches of 8-Bit ISA Slots or right angle 62-pin female headers floating around the net (I doubt Sullins will fire up their production line for my tiny requirements) so I'm going to scavenge the 8-Bit ISA Slots from an old 286 Mainboard and cut down some right angle 64-pin female headers to 62-pin.