RE: 533Mhz FSB of E7501

[Terry B. Chen]

We tested s2723 that use E7501 source code; I find linuxbios can not support dual channel memory. Then I try to disable hyper threading, the spot_check meet error again！ 
    I have compare the E7501 with E7500 Bios spec, it have a lot of differences between these two chipsets including RCOMP programming. I suppose it need to modify in many site.
    This is the two the lspci file. I suppose you just need 00:00;0 
400 FSB:
    00:00.0 Host bridge: Intel Corp.: Unknown device 254c (rev 01)
00: 86 80 4c 25 06 01 90 00 01 00 00 06 00 00 00 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
30: 00 00 00 00 40 00 00 00 00 00 00 00 00 00 00 00
40: 09 00 05 11 00 00 00 00 00 00 00 00 00 00 00 00
50: 04 60 0d 00 00 00 00 00 00 10 11 01 00 00 33 33
60: 00 00 08 08 08 08 08 08 00 00 00 00 00 00 00 00
70: 00 03 00 00 00 00 00 00 1f 04 01 39 79 02 67 20
80: b1 0b 71 00 00 00 00 00 00 98 10 d2 0d 00 00 00
90: 00 00 00 00 00 00 00 00 55 05 55 05 01 1a 38 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 44 c0 50 11 00 20 ff 03 00 00 00 00 00 00 00 00
d0: 02 28 00 0e 03 00 00 33 80 09 31 b5 00 00 01 01
e0: 1d 1d 00 00 00 00 00 00 56 46 00 00 00 00 00 00
f0: 00 00 00 00 74 00 30 40 40 0f 00 00 00 00 00 00
533 MHZ:
00:00.0 Host bridge: Intel Corp.: Unknown device 254c (rev 01)
00: 86 80 4c 25 06 01 90 00 01 00 00 06 00 00 00 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
30: 00 00 00 00 40 00 00 00 00 00 00 00 00 00 00 00
40: 09 00 05 11 00 00 00 00 00 00 00 00 00 00 00 00
50: 04 60 0d 00 00 00 00 00 00 10 11 01 00 00 33 33
60: 00 00 08 08 08 08 08 08 00 00 00 00 00 00 00 00
70: 00 03 00 00 00 00 00 00 04 02 01 28 79 02 67 20
80: 62 06 71 00 00 00 00 00 00 98 10 d2 8d 00 00 00
90: 00 00 00 00 00 00 00 00 55 05 55 05 01 1a 38 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 44 c0 50 11 00 20 ff 03 00 00 00 00 00 00 00 00
d0: 02 28 00 0e 03 00 00 33 80 09 31 b5 00 00 01 01
e0: 1d 1d 00 00 00 00 00 00 54 4a 00 00 00 00 00 00
f0: 00 00 00 00 74 00 30 40 40 0f 00 00 00 00 00 00

-----Original Message-----
From: steven james [mailto:[e-mail]] 
Sent: 2003年4月8日 23:16
To: Terry B. Chen
Cc: [e-mail]
Subject: Re: 533Mhz FSB of E7501

Greetings,

Most likely, there is an undocumented register issue in the northbridge.

With the OEM BIOS, can you send me an lspci with a 400 FSB and a 533
FSB. That should narrow things down.

G'day,
sjames

On Tue, 8 Apr 2003, Terry B. Chen wrote:
> Dear all;
>    I am trying the Tyan 2723(E7501), but I find it will report
> spot_check error if the board run in 533 FSB. But if the CPU or the
> memory is 400 FSB it will be ok. Does anyone else meet the same problem?
>
> Best regards
> Terry chen
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