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Re: Looking for a card for Diagnostics
Hi Ed,
Sounds like a peculiar 'diagnostics' you are trying to implement, here?
Anyway, you take take any main-stream ($40) PCI card that is supporting
OHCI.
Every USB, firewire card supports OHCI nowadays, using this interface
you can setup PCI-master read/write.
The HW-specs (ie. register) you will find on the intel-web somewhere.
Using normal USB-API and/or firewire-API on the OS that you are using
(Microsoft) you will be able to let the card but some data
into main memory.
Note, that the API abstracts all low-level calls, to start/stop all
memory-accesses, ie. you are not able to
program those yourself. Why? Well, first of all, it's written as part of
the kernel-mode driver, not a normal
environment for a Windows-programmer to make use of. Second and main
reason:
all SW is written to hook-up the card to the applications that want to
use the PC-IO that the card is targetted at.
So using USB you only want to be able to 'move block of data from USB
device #1 to main-memory location X'. etc.
If you are looking for PCI-diagnostics tools, take a look at Vmetro etc.
The SW allows for programming the (OHCI-) PCI-card
to perform DMA (outside of MS-windows) using 'simpe' scripting-language.
The added-value is:
* bypassing MS-Windows stuff.
* whilst analysing the behaviour of the card on the PCI-bus down to
every PCI-cycle.
We have used Vmetro-tooling to debug a PCI-interface of a DSP-board we
made:
it appeared to be invaluable!
--
Kind regards, Martijn Emons
- Designer Consultant -
Arcobel ASIC Design Centre B.V.
Hambakenwetering 1
5231 DD 's-Hertogenbosch,
The Netherlands.
tel.: +31 73 64 60 100
fax : +31 73 64 60 115
edincalif@attbi.com wrote:
>We want to buy some PCI cards we can program to do read and writes to =
>main memory.
>We have not been able to find a card that provides this information.
>
>Does anyone know of a card that will provide us with the information on =
>how to program
>it to do mastermode reads and writes?
>
>thanks, Ed
>
>
>
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