Re: [openrisc] PC as GPR?

["David Feustel" <dfeustel@mindspring.com>]

----- Original Message ----- 
From: "Andreas Bombe" <bombe@informatik.tu-muenchen.de>
To: <openrisc@opencores.org>
Sent: Wednesday, February 20, 2002 10:30 AM
Subject: [openrisc] PC as GPR?


> (List ate my email - this is a resend.)
> 
> Is there a specific reason why the PC is not addressable like a general
> purpose register (i.e. make r31 be the PC)?

Even *more* interesting is mapping the register set onto the first
page of memory so that register data can be addressed as memory
items. This was the case in some early computers designed by 
Digital Equipment - the PDP 10 among others. 



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