Aztech (Panasonic/Matsushita) CD ROM & Linux

Aztech (Panasonic/Matsushita) CD ROM & Linux

Post by Richard Sto » Wed, 10 Aug 1994 13:21:46



Has anyone gotten the Comp-USA cheapie Aztech CD-ROM to work with the sbpcd
driver?  I added one of these to my system as a second drive (supplementing
my Sony) for DOS, but haven't gotten it to work with Linux as yet.

The Aztech (though the sbpcd readme says it is supported) is not recognized
by autopolling, nor when I specifically give the address in sbpcd.h.
Perhaps this has to do with the cheap, polling-only (no IRQ, no DMA) access
method of these lamentable drives?

Ostensibly, the *hardware* supports both DMA and interrupts, but the *gag*
DOS drivers do not implement them.  Any suggestions or success stories?

--
Richard S. Stone                                             Network Engineer
The Engineering Design Group
"If it ain't broke, don't fix it!"      "If it *is* broke, pay us to fix it!"
2-FOR-1 DEAL:  "We'll break it for you and then fix it; for one low price!"

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
/* disclaimer.h */
printf("The opinions expressed above are my own, and do not necessarily
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Aztech (Panasonic/Matsushita) CD ROM & Linux

Post by Darren J Moff » Fri, 12 Aug 1994 05:06:40


Try using 0x630 for the address of the CD-ROM.
#
--
Darren J Moffat                               20 Southpark Ave


 
 
 

Aztech (Panasonic/Matsushita) CD ROM & Linux

Post by NARD.. » Sat, 13 Aug 1994 09:20:31



>Hello Richard Stone and all others,
>on 09.08.94 Richard Stone wrote to All in USENET.COMP.OS.LINUX.HELP:
>RS> Has anyone gotten the Comp-USA cheapie Aztech CD-ROM to work with the sbpcd
>RS> driver?
>The AZTECH-268 drive currently is NOT supported under Linux.

Is anyone working on a driver or a patch to existing driver(s)?
I'm willing to put in coding time to help on this if something
is underway...

Thanks,
Joe Nardone

Quote:>RS> The Aztech (though the sbpcd readme says it is supported) is not recognized
>Formerly, Aztech used Matsushita drives. Now they build their own, and the
>new ones are not compatible to anything else.
>RS> Perhaps this has to do with the cheap, polling-only (no IRQ, no DMA) access
>RS> method of these lamentable drives?
>The most common access method of non-SCSI CDROM drives is not a "cheap,
>polling-only" method; the drives need to get polled only at the beginning
>of a transfer (multiples of 2048 bytes); if you got the first byte, you
>can just "REP INSB" and all the other bytes come at bus speed. No timing
>or waiting necessary, no cli(). Why waste an IRQ for that?
>Greetings ... Eberhard

 
 
 

Aztech (Panasonic/Matsushita) CD ROM & Linux

Post by Eberhard Moenkebe » Thu, 11 Aug 1994 08:00:28


Hello Richard Stone and all others,

on 09.08.94 Richard Stone wrote to All in USENET.COMP.OS.LINUX.HELP:

RS> Has anyone gotten the Comp-USA cheapie Aztech CD-ROM to work with the sbpcd
RS> driver?

The AZTECH-268 drive currently is NOT supported under Linux.

RS> The Aztech (though the sbpcd readme says it is supported) is not recognized

Formerly, Aztech used Matsushita drives. Now they build their own, and the
new ones are not compatible to anything else.

RS> Perhaps this has to do with the cheap, polling-only (no IRQ, no DMA) access
RS> method of these lamentable drives?

The most common access method of non-SCSI CDROM drives is not a "cheap,
polling-only" method; the drives need to get polled only at the beginning
of a transfer (multiples of 2048 bytes); if you got the first byte, you
can just "REP INSB" and all the other bytes come at bus speed. No timing
or waiting necessary, no cli(). Why waste an IRQ for that?

Greetings ... Eberhard