Re: 3C509: Problems using more then 16KB of the boot rom

[Christoph Plattner <christoph.plattner@alcatel.at>]

Thanks for the answer.

My problem is, 16KB is too less. I want to use the
boot rom of the netboot-0.9.0e package, and this is about 20KB !!!
But there is a day, where I find a solution !

Cheers
	Christoph P.


Hans-Peter Jansen wrote:
> 
> Christoph Plattner wrote:
> >
> > I have problems to use more then 16KB of the boot rom. The 3COM Chip
> > cannot address it, although I setup 32K in the 3c5x9cfg.exe. Also
> > the 3c5x9cfg tool has a problem. On the one hand it displays a boot rom
> > size of 32K on the info page, on the otherhand it displays a memory
> > range of C8000-CBFFF instead of CFFFF, which indicates a 16KB memory
> > window. I also tested with a logic pen, that the chip select line of
> > the boot rom does not assert, if the address is over the 16KB window.
> >
> > Can anybody help me, how to use the full 32KB on a 3COM 3C509B ISA/PnP.
> >
> > By the way, PnP is disabled !!!
> >
> > Tanks for help
> >
> >         C. Plattner
> > ===========================================================================
> > This Mail was sent to netboot mailing list by:
> > Christoph Plattner <christoph.plattner@alcatel.at>
> > To get help about this list, send a mail with 'help' as the only string in
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> 
> No positive reply either. Because lacking a 16k eprom, I used a 32k one.
> The opt. working config was burning a doubled 16k image into the 32k one
> (this was needed to get it working) and choosing 16k eprom size (to get more
> ems space)... Since then, my pbx boots with light speed (of cause with my
> own dos-network drivers, bionet is alive!) ;-)
> 
> The downside for you is, it seems, the 509 doesn't decode a 32k eprom
> address space properly. Blame 3com (once again, grrrh)
> 
> Choosing 3com as my standard (boot)nic (tm) controller supplier
> 
>     I deeply regret...
> 
> Let's meet again in a better world
> 
>     hp
> 
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