Best documented platforms [was Re: [rescue] Perverse Question]

Scott Newell newell at
Thu Jul 3 14:44:39 CDT 2003

At 11:34 AM 6/9/2003 , you wrote:
>>If you ever wanted to play with a RISC machine at a really low level,
>>the sun4c and sun4m (the LX is sun4m) are probably the best-documented
>>platforms on the planet, and SPARC assembly language is -really- easy.
>Links & pointers, please!
>I'm aware that DEC put out quite a bit of good stuff on the TurboChannel
>MIPS based machines ( , but
>I've never been able to find much other than the CPU docs for the sun4c
>stuff.  Sun pulled the SBUS spec (800-5822-10) from their site and don't
>intend to put it back, from what they remember them telling me.  (If anyone
>can tell me where the sun4c gets it's 100Hz ticker, let me know...)
>What else out there is really well documented...PPC based chrp and prep,

Replying to my own message...I've just noticed that some of the HP PA
documentation appears to be available at
Looks like ASIC register level programming info, memory maps, bus
descriptions, and all kinds of other good stuff.


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