Re: OT - limitation of PC's parallel port (was: Logic analyzer)

From: Christer Palm (
Date: 2002-04-18 08:03:43

  • Next message: Spiro Trikaliotis: "Re: C'T Articles (RE: Logic analyzer (Was: 6510 in FPGA works!!))"
    Spiro Trikaliotis wrote:
    > Does anyone know what is the (most) limitating factor when using the PC's 
    > parallel port? Is it the usage of I/O address space, or the usage of the 
    > ISA bus? I could obtain a PCI card for testing, but I don't want to spend 
    > so much money (these are really expensive!) if I don't know if this makes 
    > a significant change.
    I don't know any details, but googling for "pci parallel port" returns 
    quite a few interesting results with cards ranging from $14 - $79, most 
    of them claiming to be 3 times faster than ISA-based cards / supporting 
    a transfer rate of 2MB/s, whatever that means...
    Christer Palm
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