[PARPORT] Nibble mode???

From: Mark Cianfaglione (markcia@nortelnetworks.com)
Date: Mon Apr 23 2001 - 10:56:23 EDT

  • Next message: Tim Waugh: "Re: [PARPORT] Nibble mode???"

    After re-reading past data I've decided to go back to ECP mode. As the
    kernel boots up I notice the following in the logs:

    Apr 21 20:47:57 localhost kernel: 0x378: FIFO is 16 bytes
    Apr 21 20:47:57 localhost kernel: 0x378: writeIntrThreshold is 16
    Apr 21 20:47:57 localhost kernel: 0x378: readIntrThreshold is 16
    Apr 21 20:47:57 localhost kernel: 0x378: PWord is 8 bits
    Apr 21 20:47:57 localhost kernel: 0x378: Interrupts are ISA-Pulses
    Apr 21 20:47:57 localhost kernel: 0x378: ECP port cfgA=0x10 cfgB=0x49
    Apr 21 20:47:57 localhost kernel: 0x378: ECP settings irq=7 dma=1
    Apr 21 20:47:57 localhost kernel: parport0: PC-style at 0x378 (0x778),irq 7,
    dma 1[PCSPP,TRISTATE,COMPAT,ECP,DMA]
    Apr 21 20:47:57 localhost kernel: parport0: cpp_mux: aa55f00f52ad51(87)
    Apr 21 20:47:57 localhost kernel: parport0: cpp_daisy: aa5500ff(80)
    Apr 21 20:47:57 localhost kernel: parport0: assign_addrs: aa5500ff(80)
    Apr 21 20:47:57 localhost kernel: parport0: In mode 0x04
    Apr 21 20:47:57 localhost kernel: parport0: Using nibble mode
    Apr 21 20:47:57 localhost last message repeated 2 times
    Apr 21 20:47:57 localhost kernel: parport0: device reported incorrect
    length field (105, should be 107)
    Apr 21 20:47:57 localhost kernel: parport0: In compatibility (forwardidle)
    mode
    Apr 21 20:47:57 localhost kernel: parport0: Multimedia device, Connectix
    QuickCam VC

    What does the line "Using nibble mode" mean? is this part of the
    compatibility mode or something??? I'm not entirely clear on that...

    Mark

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