Hi,
Marc Bell wrote:
> We are trying to use the PC104 bus to stream data to an FPGA.
> We need to speed up the bus timings and so we are adjusting the
> 0xE800000C register.
>
> Either the Preliminary manual online is just plain wrong or I don't
> have all the setup correct.
>
> We've setup the connector to be in PC104 rather than GPIO mode:
> 0x55555555 to address 0xE8000030
> 0x55555555 to address 0xE8000034
> 0x55555 to address 0xE8000038
> 0x55555 to address 0xE800003C
Have a look at this thread of discussion:
http://tech.groups.yahoo.com/group/ts-7000/message/13623
There's some information concerning these registers.
But to tell you the truth, i'm agree with you, it seems to me that you
can't adjust the timing as describe in the manual...
>
> The manual suggests bits 5-0 adjust strobe length, 9-6 adjust setup,
> and some other bits adjust err other bits. But none of the settings
> work properly.
>
> For example the manual states:
> "The minimum (when bits are zero) is 20ns"
>
> Well I've tried settings bits 5:0 over the full range of 0x3F downto
> 0x00 and mine is sitting here generating a 10ns strobe, for ANY
> setting of the register.
>
> The clock on-off control doesn't work either.
I've noticed, that to turn on/off the control, you have to play with
the bit "activate/deactivate TS special signal".
Please keep this mailing list informed.
>
> My default was to be: 0x1CC5
i solved my problem by using 0x162A8, 0x16bdc being the value i read
after booting the full debian distro.
Chris
>
> Has anyone else adjusted their timings with any success? I've emailed
> technologic three times and had no response.
>
> Regards
> Marc
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
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