Re: [SLUG] Re: ECS K7S5A

From: Bill Shaw (bill.shaw@gmail.com)
Date: Mon Nov 29 2004 - 11:59:45 EST


You may very well be correct on all those points however all of these
suggestions were taken from the ambmb.com forums and were reoccurring
fixes for the problem Paddy described.

On Sun, 28 Nov 2004 21:56:26 -0500, Bryan J. Smith <b.j.smith@ieee.org> wrote:
> On Sun, 2004-11-28 at 21:18, Bill Shaw wrote:
> > Does the ECS K7S5A board allow the use of DDR or SDRAM?
> > Or is it just SDRAM?
>
> Both. The SiS735 has support for both [Single Data Rate] Synchronous
> and Double Data Rate Synchronous DRAM. 2 DIMMs each. They cannot be
> used simultaneously.
>
> > Doing a quick search I found a few problems that are similar:
> > -Two sticks of SDRAM RAM seem to cause problems.
>
> If they have different timings. Some earlier SDR SDRAMs lack and
> on-module SPD chip. In general, I don't like to mix different modules
> with different SDRAM ICs.
>
> > Try one or DDR.
>
> FYI, JEDEC DDR specifications are as follows (for non-Registered):
>
> PC1600/DDR200 Max 6 Banks (3 DIMMs)
> PC2100/DDR266 Max 4 Banks (2 DIMMs)
> PC2700/DDR333 Max 4 Banks (2 DIMMs)
> PC3200/DDR400 Max 2 Banks (1 DIMM)
>
> Now the SiS only has 2 DDR DIMM slots, and I do not believe it has more
> than two.
>
> > -Disable ACPI OS support in the CMOS.
> > - If your using a modem avoid the first PCI slot since it's shared
> > with the AGP slot.
>
> ???
>
> The AGP bus is its own, separate 32-bit PCI bus with a higher clock and
> special capabilities (long story).
>
> In fact, the southbridge/PCI/Legacy PC (LPC) is traditionally a
> 0.125-0.5GBps (32-64b@33-66MHz) bridged PCI bus off of the
> northbridge/AGP.
>
> In the case of the SiS735 chipset, it is a single chip. EV6 to the
> CPU. Everything else is bridged off of its internal HyperTransport
> interconnect -- including the northbridge/AGP to southbridge/PCI.
>
> --
> Bryan J. Smith b.j.smith@ieee.org
> --------------------------------------------------------------------
> Subtotal Cost of Ownership (SCO) for Windows being less than Linux
> Total Cost of Ownership (TCO) assumes experts for the former, costly
> retraining for the latter, omitted "software assurance" costs in
> compatible desktop OS/apps for the former, no free/legacy reuse for
> latter, and no basic security, patch or downtime comparison at all.
>
>
>
>
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