RE: SMC2

Bright Star's ipEngine, using an 823, has SMC1 and SMC2 also.
When used with their pKernel, both serial ports are available.
When used with Linux, only SMC1 is available.
I noticed it, and thought it might be easy to fix, but
that's not important to me, since I only use the ipEngine for prototyping.
--
Dave Brown [off-list ref]
Principal Engineer, Software
Harris Corporation RFCD

-----Original Message-----
From: Dan Malek [mailto:dan@netx4.com]
Sent: Wednesday, June 07, 2000 1:05 PM
To: Grant Carter
Cc: linuxppc-embedded
Subject: Re: SMC2



Grant Carter wrote:

quoted

When I look at my manuals, I see no reference made to the

bits 20 and 21

quoted

in pbpar, pbdir or pbodr. How does setting those bits

enable the SMC2

quoted

pins? Those are located in Port A (PA8 and PA9)

I guess my point is why are the Port B registers being

modified for SMC2

quoted

pins which are found in Port A?

Oh oh......are you using an 823 or 850?  Sorry about this, you will
have to change the code.  Someday, I have to finish up a better UART
driver.  You are the first person I know that is trying to use this
as a UART.  SMC2 is the first thing to disappear when using the parts
for other data communication protocols or interfaces, so custom
software tends to assign these for other purposes.  I seldom
see anything
but SMC1 used for a UART, so making the driver better hasn't been
high on the list......


	-- Dan

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