Hi,
> What exactly is in your Device section? 

Section "Device"
    Identifier  "ATI Mach64 GX"
    Driver      "ati"
    BusID       "PCI:0:13:0"
    MemBase 0x81000000
EndSection

(tried with and without MemBase 0x81000000- same result)

> Then please send me the output of this:
> pcictl pci0 dump -d 13

PCI configuration registers:
  Common header:
    0x00: 0x47581002 0x02000082 0x03000003 0x00000000

    Vendor Name: ATI Technologies (0x1002)
    Device Name: Mach64 GX (0x4758)
    Command register: 0x0082
      I/O space accesses: off
      Memory space accesses: on
      Bus mastering: off
      Special cycles: off
      MWI transactions: off
      Palette snooping: off
      Parity error checking: off
      Address/data stepping: on
      System error (SERR): off
      Fast back-to-back transactions: off
    Status register: 0x0200
      Capability List support: off
      66 MHz capable: off
      User Definable Features (UDF) support: off
      Fast back-to-back capable: off
      Data parity error detected: off
      DEVSEL timing: medium (0x1)
      Slave signaled Target Abort: off
      Master received Target Abort: off
      Master received Master Abort: off
      Asserted System Error (SERR): off
      Parity error detected: off
    Class Name: display (0x03)
    Subclass Name: VGA (0x00)
    Interface: 0x00
    Revision ID: 0x03
    BIST: 0x00
    Header Type: 0x00 (0x00)
    Latency Timer: 0x00
    Cache Line Size: 0x00

  Type 0 ("normal" device) header:
    0x10: 0x81000000 0x00000000 0x00000000 0x00000000
    0x20: 0x00000000 0x00000000 0x00000000 0x00000000
    0x30: 0x00000000 0x00000000 0x00000000 0x00000117

    Base address register at 0x10
      type: 32-bit nonprefetchable memory
      base: 0x81000000, not sized
    Base address register at 0x14
      not implemented(?)
    Base address register at 0x18
      not implemented(?)
    Base address register at 0x1c
      not implemented(?)
    Base address register at 0x20
      not implemented(?)
    Base address register at 0x24
      not implemented(?)
    Cardbus CIS Pointer: 0x00000000
    Subsystem vendor ID: 0x0000
    Subsystem ID: 0x0000
    Expansion ROM Base Address: 0x00000000
    Reserved @ 0x34: 0x00000000
    Reserved @ 0x38: 0x00000000
    Maximum Latency: 0x00
    Minimum Grant: 0x00
    Interrupt pin: 0x01 (pin A)
    Interrupt line: 0x17

  Device-dependent header:
    0x40: 0x00000000 0x00000000 0x00000000 0x00000000
    0x50: 0x00000000 0x00000000 0x00000000 0x00000000
    0x60: 0x00000000 0x00000000 0x00000000 0x00000000
    0x70: 0x00000000 0x00000000 0x00000000 0x00000000
    0x80: 0x00000000 0x00000000 0x00000000 0x00000000
    0x90: 0x00000000 0x00000000 0x00000000 0x00000000
    0xa0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xb0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xc0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xd0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xe0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xf0: 0x00000000 0x00000000 0x00000000 0x00000000

> For some reason the driver thinks your card is an ISA device - no idea
> why, it gets the information from a register on the chip which either
> means the chip lies ( if it's a custom-made part for Apple they probably
> didn't bother with it and their driver wouldn't use it - I don't know.
> In this case the driver would need to handle this sort of card specially
> ) or the driver doesn't read the right register ( not very likely ) - so
> it doesn't pay much attention to PCI configuration. I fear I can't do
> much about that without such a card to play with - you're probably
> better off looking for something else.

Well I've looked thru and found somebody using same graphics card on alpha:
http://www.nwlink.com/~dhop/aleph/mach64/XFree86.0.log
http://www.nwlink.com/~dhop/aleph/mach64/dmesg

I hope you'll see something on pci dump
thanks



		
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