> > Further I've read somewhere that you can reprogram the FPGA and
get PCI
> > on the PC104 header?
> > Any more documentation on this feature? How fast is this PCI then?
>
> PCI on PC104 is possible, but it's currently unimplemented.
Any insight on this feature ?
Thanks for your time and keep up your good job!
--- In "Michael" <> wrote:
>
> > Hi Michael (and everybody else)
> >
> > Before I bought my TS-7800 I asked you about the ISA speed.
> > You said that it can run at 60ns cycle time.. So that would be just
> > about 16.6Mhz ?
>
> 1/60ns ~ 16.6Mhz, yes...
>
> > Which if I take advantage of the 16-bit data there is I can get
> > 32MBytes/Seconds transfer in theory?
>
> In theory, yes. However (according to our hardware engineer who
designed
> the FPGA for the TS-7800) you really only have a chance of getting this
> speed when writing (due to pipelining) and not when reading, due to
the PCI
> to ISA latencies. You will likely not get better then 500ns cycles
when
> reading unless you doing some tweaking with the MMU.
>
> > Did I get that right?
> > I pressume this works with the 0WS (0 Wait States) system?
>
> The 0WS is separate... it's basically a signal from the peripheral that
> tells the host that it doesn't have to wait for the rest of the
cycle. We
> honor this signal and terminate the transaction early, but if you
set the
> timing to 60ns cycles you don't need to use this.
>
> > Do you have some more technical information on the ISA
implementaiton on
> > the board?
> > As ISA information is very scarce on the internet and it's not always
> > exactly the same. Especially regarding things like 0WS.
>
> I found an ISA spec on the web a couple months ago and remember
saving it,
> but now I can't find it...
>
> > Further I've read somewhere that you can reprogram the FPGA and
get PCI
> > on the PC104 header?
> > Any more documentation on this feature? How fast is this PCI then?
>
> PCI on PC104 is possible, but it's currently unimplemented.
>
> > I've ready that the ARM9 actually has PCIex 1x ...
> >
> > Thanks for the information.
> > -Heinrich
>
>
> ______ Best Regards,
> |__ __/ Michael Schmidt
> || Software Engineer
> ||echnologic Systems (EmbeddedARM.com)
> || (480) 16610 East Laser Drive #10
> |/ 837-5200 Fountain Hills, AZ 85268
> http://oz.embeddedarm.com/~michael
>
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