What's your coolest ISA card?( was Re: IBM 5150 PC)

From: Fred Cisin <cisin_at_xenosoft.com>
Date: Tue Aug 7 19:03:16 2001

I'd better cloarify that a little. The IBM Professional Debug Facility
was similar to Periscope but wasn't Periscope.



> On Tue, 7 Aug 2001, Gene Buckle wrote:
> > > > how about SILLIEST?? IBM professional debug facility. An entire half
> > > > length card for the sole purpose of bringing two pins of the ISA bus to a
> > > > pushbutton. It made the front cover of PC Tech Journal.
> > That sounds a LOT like the Periscope debugger board. Is it?
>
> NO!
>
> Periscope (by Brett Salter) had several different versions, ranging from
> little clips to go into an ISA slot alongside a board, to a full lenghth
> board with "write-protectable RAM" that the debugger could be loaded into.
>
> The IBM version COULD be used with the Persicope software, particularly if
> you were SO unable to solder as to not be able to put a pair of extra
> wires ont solder pads (such as on the floppy card).
>
> What made the IBM card "SPECIAL" was that it was an entire half length
> card with a single trace on each side running at an angle to the
> pushbutton. It was the closest to a BLANK card as was ever issued. REAL
> BLANK, without even any holes in it, NOT a prototype card.
>
> --
> Grumpy Ol' Fred cisin_at_xenosoft.com
Received on Tue Aug 07 2001 - 19:03:16 BST