Re: Debugger board for P4 ECMs

[Steve Ciciora <ciciora@edison.chisp.net>]

If no one else steps up to the plate, I'll lay out a PCB, work up
estimates for PCBs, etc.  I don't have a 1227165, so I won't be able to
test it,
or get board dimentions.  If someone is willing to help me with the size,
I'll start laying out a PCB.

- Steven Ciciora

> aussie 808. Very interesting. Ludis have you designed a PCB yet?
> 
> Cheers Richard.
> >
> > Ludis Langens wrote:
> > >
> > > I've added a simple schematic to my web pages.  It is at:
> > >   http://www.cruzers.com/~ludis/p4test.gif
> > >
> > > The schematic is of a little peripheral board for P4 ECMs.  It plugs
> > > onto the edge card test connector of a P4 ECM.  Everything fits on a
> > > circuit board small enough to fit inside the case of a 1227165.
> > >
> > > The added peripherals let me run a debugger in a P4 ECM.  This is very
> > > useful for figuring out how the hardware works.  The schematic shows a
> > > Mac style RS422 serial port.  This could be changed to RS232 with a DB9
> > > connector for use with PCs.  Is anyone interested in building a copy?
> > >
> > > --
> > > Ludis Langens                               ludis (at) cruzers (dot) com
> > > Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/
> > >
> > >
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> >
> > --
> > Steve Ravet
> > steve.ravet@arm.com
> > Advanced Risc Machines, Inc.
> > www.arm.com
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