Reply 18800 of 19216, by PC@LIVE
Yesterday I upgraded the PCChips M549.
Unfortunately the 512KB L2 cache has a problem and I have to disable it.
Having the switching regulators, I have no problems with the temperatures of the mosfets, going up in frequency.
I changed the CPU, removed the P.133 and put a K6-2-400 (2.2V).
The minimum Vcore that can be set by the jumpers is however 2.5V, I proceed and start the MB.
It boots but the CPU is not recognized by the BIOS, it is identified as -MMX 66MHz, any frequency use.
The K6-2 is a CXT, so the 2X setting is automatically remapped to 6X.
I tried three FSB 55 60 and 66 frequencies, corresponding to 330 360 and 400MHz.
Having W95 as the OS, at 400MHz it doesn't start, while at 360 and 330 it does.
For this problem I have to find a special file that solves the problem.
The rest of the configuration is: 64MB RAM, VGA CL-5446 2MB, SB Vibra16S, IBM 10/100 PCI LAN.
AMD 286-16 287-10 4MB HD 45MB VGA 256KB
AMD 386DX-40 Intel 387 8MB HD 81MB VGA 256KB
Cyrix 486DLC-40 IIT387-40 8MB VGA 512KB
AMD 5X86-133 16MB VGA VLB CL5428 2MB and many others
AMD K62+ 550 SOYO 5EMA+ and many others
AST Pentium Pro 200 MHz L2 256KB