MPC860 - minicom

MPC860 - minicom

[Sid]

Hi,

I have an MBX860 board.

After powering up the board, lights DS1 and DS2 light up.

When I connect the board to the serial port of my host via COM/SMC1, minicom
shows a target online, but I do not get a debug prompt on minicom. And there
seems to be no activity at all on the board.

Is this a common problem? What steps should I take for troubleshooting?

Thank you for your time.

regards,
Sid
--
sid@siddhartha.8m.com

Q: "Don't fret, Riker.  My good fortune is your good fortune."
--"Deja Q", Stardate 43539.1


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Re: MPC860 - minicom

[Karl-Heinz Krempels]

Hi,

please check your cables. I think its a handshaking problem.

\Charlie.

Karl-Heinz Krempels, Vereinsstrasse 13-15, 52062 Aachen, +49-241-4093691
Aachen University of Technology , charlie@pool.informatik.rwth-aachen.de
- In a world without walls and fences,
  what should we do with windows and gates?


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Re: MBX860 - minicom

[Sid]

> Hi,
>
> please check your cables. I think its a handshaking problem.
>
> \Charlie.

Hi,

I discovered the reason. My 3.3 V input pin was only receiving 1.8V and all
the lights were not turning on.

This is because I couldn't find a standard power supply for this board and I
had to make a make-shift one and apparently the load on the 3.3V pin is so
high that my power supply can't handle it.

Could anyone using this board tell me what kind of power supply they are
using on this board? Maybe even the expected load resistance at normal
operation, so that I have a rough gauge of the Input current required to
drive it at 3.3V.

Do power pcs have a different lkind of power supply than the i386 machines?
As in the Voltage/Current specs.

Thank you once again.

regards,
Sid
--
sid@siddhartha.8m.com

Kirk: "Oh, by the way, thank you for this."
Spock: "I know of your fondness for antiques."
Kirk: "'It was the best of times, it was the worst of times.'  Message,
Spock?"
Spock: "None that I'm conscious of.  Except of course, happy birthday.
  Surely, the best of times."
--"STII:TWOK", Stardate 8130.3


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Re: MBX860 - minicom trouble continues

[Sid]

Hi all,

I managed to construct a temporary power supply and get the board running.
I also got the (till now missing) original documentation for the board from
the
Motorola website. I have found out how essential this was. :)

Now all the correct lights light up and the CPU light keeps blinking. I
assume
this means that the CPU is active. The problem is, instead of getting an
EPPCBug prompt on minicom, I get a series of outputs on the screen which say
"ABCDEFGHz". Nothing else happens.

This happens whether I select the ROM or the FLASH as the source of the
debugger. My board is an MBX860-006C.

Is this normal? Please suggest troubleshooting steps.

Thank you for your time.

regards,
Sid
--
sid@siddhartha.8m.com

"[The knowledge  to reconnect  a brain]  does  not  [exist  yet  in  the
   galaxy.]
  -- Spock, "SPOCK'S BRAIN"

----- Original Message -----
From: "Sid" <sid@innvo.com>
To: "Karl-Heinz Krempels" <charlie@pool.informatik.rwth-aachen.de>
Cc: <linuxppc-dev@lists.linuxppc.org>
Sent: Tuesday, February 27, 2001 1:06 AM
Subject: Re: MBX860 - minicom


>
> > Hi,
> >
> > please check your cables. I think its a handshaking problem.
> >
> > \Charlie.
>
> Hi,
>
> I discovered the reason. My 3.3 V input pin was only receiving 1.8V and
all
> the lights were not turning on.
>
> This is because I couldn't find a standard power supply for this board and
I
> had to make a make-shift one and apparently the load on the 3.3V pin is so
> high that my power supply can't handle it.
>
> Could anyone using this board tell me what kind of power supply they are
> using on this board? Maybe even the expected load resistance at normal
> operation, so that I have a rough gauge of the Input current required to
> drive it at 3.3V.
>
> Do power pcs have a different lkind of power supply than the i386
machines?
> As in the Voltage/Current specs.
>
> Thank you once again.
>
> regards,
> Sid
> --
> sid@siddhartha.8m.com
>
> Kirk: "Oh, by the way, thank you for this."
> Spock: "I know of your fondness for antiques."
> Kirk: "'It was the best of times, it was the worst of times.'  Message,
> Spock?"
> Spock: "None that I'm conscious of.  Except of course, happy birthday.
>   Surely, the best of times."
> --"STII:TWOK", Stardate 8130.3
>
>


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