Re: PPC/MCA RS/6000 port ?

On Sun, Mar 19, 2000 at 09:57:45PM -0500, David Edelsohn wrote:

	I do not have any hardware specs for these machines offhand, but
the interrupt controller may very well be PC-like cascaded 8259s.

	The PPC601 was a POWER architecture chip with additional user-mode
PowerPC instructions.  It was based on the existing RSC (RIOS Single Chip)
processor that IBM already was using and allowed the first PowerPC chip
implementation to be developed and deployed very rapidly.  The supervisor
state of the chip was all POWER architecture, not PowerPC Books II and
III.  The direct store segments were a way to access special devices on
the I/O bus.

What does this mean in concern to the existing PPC port ? As i understand
the linuxppc port does already run on 601 - So the CPU is already
supported - Leaves us with bootstrap/bootprom and special architecture
(interrupts, scsi controller, serial ports etc)

Right ?

Flo
--
Florian Lohoff		flo@rfc822.org		      	+49-5241-470566
"Technology is a constant battle between manufacturers producing bigger and
more idiot-proof systems and nature producing bigger and better idiots."


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On Mon, 20 Mar 2000, Florian Lohoff wrote:

What does this mean in concern to the existing PPC port ? As i understand
the linuxppc port does already run on 601 - So the CPU is already
supported - Leaves us with bootstrap/bootprom and special architecture
(interrupts, scsi controller, serial ports etc)

Mostly, does your firmware provide residual data to the loaded program
and do you know at which physical address you can access serial ports for
example ?

I have code to dump residual data if you can upload it to some other
machine. This code could also probably be run standalone to dump on serial
port and capture on another machine.

	Gabriel.


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