BIOS Updates forum

Sebi, Bad luck. How did you pack the modded bios? Didn´t pack it at all as the files on the BIOS update diskette aren´t packed. The disk contains a file called $0044000.fl1, which is exactly 524.288 bytes in size - 512kb. This is the file I also took for the disassembly. I don´t know why the bios d...

You are correct. The same cache enabling code would appear in both the 600e and 600x bios's. The issue is only that the early 600e bios does not know how to identify the PIII. It can't proceed to enable the cache if it cannot id the cpu. So what needs to be changed is how the bios id's the CPU. OR ...

Sharedoc, can you point me to the code raising the 127? What checks are done before? Unfortunately, the Intel PII/III doc says nothing special about the mtrrs, just they exist. The PII MAY report the cache via cpuid (different from PIII) - but I didn´t find cpuid being called with eax=2. Seems we ha...

swsnyder wrote:Hello.
Is there a guide on how to get into the 600E, specifically on getting to the MCC-2 module? Any noteworthy gotchas I should know about?

There´s a service manual by IBM. Go to IBM page and enter "maintenance manual 600" in the search field.

Sebi

Maybe I found another hint: the bios also contains a microcode uploader. These microcodes are model-specific, so the bios fails to update the microcode on the new cpu. Maybe that triggers the 127? Any chances to just leave alone the microcode, but do the cache?

Sebi

I don´t think the cache enabling routine is the problem. Both PII and PIII belong to the same family (P6), so cache enabling is neccessary for both of them. I looked at the disassembly from the cache enabling module and tried to find such code in the TP bios. And there is a cache enabling routine in...

Hi there, I also updated my 600E with a PIII-500. For me it always works with full speed (maybe I got a cpu without speedstep? Some tools say it´s speedstep capable, the intel tool says it´s not). The Linux ACPI interface provides 8 throttling modes, these work fine (I´m able to throttle between 0 a...