Re: [PARPORT] parport_pc misidentifies SMC 37C951FR on Compaq Armada 1540DM + LS-120 problems

From: Joshua Jore (
Date: Wed Jun 20 2001 - 12:33:05 EDT

  • Next message: Alan Cox: "Re: [PARPORT] parport_pc misidentifies SMC 37C951FR on Compaq Armada"

    As I recall there isn't any ECP in linux right now. Work to get EPP going
    instead. And apply the patch at
    to get your newer superdisk drive to work.



    On Thu, 21 Jun 2001, David Wilson wrote:

    > My Compaq Armada 1540DM running RH 7.1 appears to misidentify the
    > printer port. The Compaq Setup program identifies it as ECP, Win95
    > identifies it as ECP but parport_pc says it is:
    > PC-style at 0x378 [PCSPP,TRISTATE,EPP]
    > cpp_mux: aa55f00f52ad51(00)
    > cpp_daisy: aa5500ff(00)
    > assign_addrs: aa5500ff(00)
    > According to Compaq:
    > The ISA bus supports the "MSIO" multifunction Super IO chip (the SMC 37C951FR
    > device, integrating an EPP/ECP parallel port, RS-232 serial port, Sir and Fir
    > serial IR, keyboard interface/power control chip, and BIOS interface), the
    > ESS1878 Audio chip, and the internal Modem.
    > The Setup program does not allow changing the mode from ECP to anything
    > else so why does parport report EPP and not ECP?
    > Also, I have two Imation external parallel port LS-120 drives. The first
    > is an old model (simple straight through cable, pass through port on rear
    > of drive) and works on the Armada using paride+epat+pf. The second is newer
    > and has an intelligent cable with printer pass through on the cable and a
    > 36 pin connector on the drive. This does not work under Linux on the Armada
    > but does with Win95 on the same machine. It does work with Linux using the
    > same modules as the older drive. Any ideas?
    > --
    > David Wilson School of IT & CS, Uni of Wollongong, Australia
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