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Re: [linrad] It works now on the 486!
The 486 uses an OPTI931 card. They were cheap so I bought a bunch.
Initially there was no support. Then someone figured out how the chip
worked and published a source for a program to get the chip started as a
full duplex device. After it is started it looks like 'windows' audio
device. 16 bits, up to 48k sampling, stereo.
IIRC I don't use /dev/dsp1, but rather start it up and I&Q and as a
So first I start my home grown setup program (sets up mixer too). Then I
start linrad. This is all done as a simple shell script.
Technically the card is very good, especially considering its very cheap
In fact, i bought a motherboard with an ISA slot just so I could use
these cards. Unfortunately the motherboard worked for a bit and then one
of the ISA lines burned out.
But they still work OK with the 486s :)
Let me know if you want further details.
Mouse, sound card and SVGA drivers seem to be "the" problems with linrad
if you are going to have any.
I think we should do a bootable CD/floppies that we could take to the
store to test computers before we buy them!
And of course, linrad works great :)
On Mon, 4 Aug 2003, Ramiro Aceves, EA1ABZ wrote:
> John Harrison, NI1B wrote:
> Dear John!
> Nice to hear that we are resuscitating our old machines!
> They can serve us for good amateur radio work thanks to Leif's genial
> I am interested in what kind of sound card you use and if Linrad detects
> /dev/dsp and /dev/dsp1 devices. Mine only detects /dev/dsp so that I
> must use the same device for D/A and D/A. Should my Sound Blaster 16
> card work with both devices?
> > Hi all,
> > I couldn't resist it. I dusted off my old 486DX2-66 and it too runs
> > Linrad (some old version).
> > It runs as both single and I/Q.
> > So Ramiro, thanks for your note. I will have to try 0103 here on the
> > 486. Right now, I am running some old version of RedHat. But it does work
> > at least at an 8kc sample rate.
> > warm regards to all Linraders,
> > john, ni1b