| From: | Tobias Seiler |
| Date: | 17 Dec 99 at 01:30:10 |
| Subject: | [warpup] Re: other WarpOS problems |
Hello Frank
On 16-Dez-99, you wrote:
> On Wed, 15 Dec 1999 22:58:47 +0100 Fabrice Lehaut wrote:
>
>
>> here some other problems which happened since a couple of weeks, and i'm
>> not able to solve these ones.
>> I get crash like this:
>>
>>
>> PowerPC Instruction access exception
>> Page fault
>> The next instruction to be fetched is located at 29D667DC
>> Task name: 'Shell Process_PPC9' Task address: 08250BA8 Task ID: 107
>>
>> SRR0: 29D667DC SRR1: 4000F070 MSR: 00003040 HID0: 0000C084
>> PVR: 00090204 DAR: 00000004 DSISR: 08000000 SDR1: 0830000F
>> DEC: 0000438C TBU: 00000004 TBL: 98068F06 XER: 00000000
>> CR: 22000444 FPSCR: 82028000 LR: 29D667DC CTR: 09D4633C
>> [...]
>
> I bet you have a 604e/233. It seems to be the infamous LR-bug,
> which always trashes bit 0 or bit 2 of your LR. This failure occurs
> due to an overheated PowerPC. In most cases replacing the fan by
> a strong 12V Pentium fan might help.
>
> In the meantime you can try aminet/hard/misc/CSPPC233Fix.lha as a
> quick fix.
>
>
> --
> _ Frank Wille (frank@phoenix.owl.de)
> _ // http://home.owl.de/~frank/
> \X/ Phx @ #AmigaGer
Well, I had idea about this LR bug. (actually a friend of mine had it)
As this problem only occurs with 233MHz cards and as I understood it these
cards where all delivered with 060 processors at 60MHz our thoughts where
if this could be an overclocking problem to the motherboard.
For a 200MHz card the divider for the system clock would be 4 to get 50MHz.
I dont really think that p5 has designed the completele thing in a asyncron
way.
So when the divider remains at 4, 233/4 = >50. So what happens to the system
speed then ?
Maybe I'm wrong. It's just an idea.
Bye, Tobias