[parisc-linux] howdy and 720/50 framebuffer question

[Christoph Plattner]

An interesting question at this point. I also have a 720, but I never
tested the graphics display up to now (I only use it via serial line).

My 720 has a single board graphics card with three BNC connectors
on it. Is this really a 24bit graphics or a 8bit graphics. The only
thing I know, is that the resolution was used with 1280x1024 under
HP-UX 9.05 (or similar...).

One day I will carry up my 21" monitor and try the grpahics on this 
machine !

Christoph


Steve Pacenka wrote:
> 
> Greetings,
> 
> I have a couple of 720's and a couple of 735's to rehabilitate.  The
> PARISC-Linux developers have done truly excellent work on the kernel and
> Debian adaptations for this architecture.  If this can yield reasonable
> GNU/Linux installs including X, the machines will go on display in our
> recycling showroom as examples of reuse of discarded cool hardware.
> Maybe someone will then adopt them to give them new homes.
> 
> I'm stymied about X on a 720/50.  Starting from an 0.9.3 ISO which
> worked fine for a base install, the default video seems to be a one bit
> B&W buffer (text overlay plane?).  fbset -i says there's no device at
> /dev/fb0, which does exist in the filesystem; XFree86 subsequently
> doesn't load the framebuffer driver.  There's no Penguin at boot.  I've
> tried later precompiled kernels through -pa33, compiling my own from
> CVS, and appending video=stifb at a boot prompt with and without sti=0.
> 
> The hardware is there:
> 
> "1. Coral SGC Graphics (10) at 0xf8000000 [1], versions 0x4, 0x0, 0x77"
> 
> This is some kind of 24 plane framebuffer, right?  I'd be satisfied with
> 8 bit color from it.
> 
> Any hints for additional instrumentation or settings?
> 
> -- thanks, SP
>    Babbage's Basement volunteer and workstation curator
>        http://www.lightlink.com/babbages/workstations.html
> 
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