Page 1 of 1
2A5KIB09C-00: Biostar M5ATA or M%ATC
Posted: Sat Dec 04, 2004 4:47 am
by Pit-Dralon
hi there,
searching for the string 2A5KIB09C-00 in the award bios-id list, it shows the Biostar M5ATA.
okay - i downloaded the M5ATA manual and tried to jumper an intel pentium 233, but when booting, the results didn't make any sense. so i searched for the revision number on the board, and recognized the stamp: M5ATC !!!
is this a mistake in your list?
br, pit
Re: 2A5KIB09C-00: Biostar M5ATA or M%ATC
Posted: Sat Dec 04, 2004 9:35 am
by zonxar
It appears Biostar used the same string on several of their boards:
http://www.supportbios.info/resultado.a ... &Idioma=EN
Posted: Sat Dec 04, 2004 2:25 pm
by ajzchips
BIOSTAR labels their boards. Check the mobo and you'll find out.
Re: 2A5KIB09C-00: Biostar M5ATA or M5ATC
Posted: Sat Dec 04, 2004 2:57 pm
by Pit-Dralon
hello again,
i don't need to check my mobo. it's a M5ATC (Rev. 1.0), printed in big letters.
the question is:
if the bios with the string "2A5KIB09C-00" works in several biostar-mobos, why does the award bios-id list only the Biostar M5ATA?
wouldn't it be better to name all the mobos M5ATA, M5ATB, M5ATC in the list?
identifying a wrong mobo leads (me) to another bios and manual .... and owners of a e.g. M5ATC won't find their mobo in the list when searching for "m5atc".
br, pit
Posted: Sat Dec 04, 2004 3:35 pm
by ajzchips
The list isn't perfect, just as practically nothing is. It's just there to help identify a board when the manufacturer hides its identity somehow.
Believe me, some boards are impossible to physically identify. But, thanks to this list, once the board's manufacturer is identified, spotting the right model becomes a lot easier. And... if a very close relative of the mobo is identified too, then the shortlist makes it even quicker.
Don't forget, sometimes 3 different mobos (same chipset) made by a manufactuere often get their BIOSes unified, so they end up with the same BIOS in many cases.
We do appreciate this kind of input, though. Thanks.
Posted: Sat Dec 04, 2004 3:48 pm
by Pit-Dralon
okay, i didn't see that.
thanks for your info
br, pit
Posted: Sun Dec 05, 2004 4:31 pm
by KachiWachi
Pit-Dralon -
Does your M5ATC have the DIMM sockets installed?
Re: 2A5KIB09C-00: Biostar M5ATA or M5ATC
Posted: Mon Dec 06, 2004 12:43 pm
by Pit-Dralon
hi,
sorry, which one are the DIMMs?
it has 4 x 72 pin and 2 x 168 pin ...
br, pit
Posted: Mon Dec 06, 2004 2:03 pm
by KachiWachi
Mine has the SIMMS (72-pin) installed, but not the DIMMS (168-pin).
I think mine is a Rev. 1 also...but I'll check. It would be strange for yours to have the sockets installed, and mine not to.
Who put your system together? (Mine is a Pionex.)
EDIT - Yes, mine is a Rev. 1 board. (See
http://www.wimsbios.net/phpBB2/viewtopic.php?t=1836 for more info.)
Posted: Mon Dec 06, 2004 2:20 pm
by Pit-Dralon
ah,
mine is M5ATC Rev. 1.0
the system pas put together by fujitsu ICL
br, pit
Posted: Wed Dec 08, 2004 3:58 am
by Pit-Dralon
hi KachiWachi,
one question remaining:
when installing an AMD K6-2 400, the system works fine (bios 07-08-98).
when i set to 75 mhz, the system still shows K6-2 400 (not 450) and seems to work fine, too.
- is it the system which doesn't work with > 400 mhz?
- is it the bios which doesn't show 450 when booting?
- what cpu do you use?
br, pit
Posted: Wed Dec 08, 2004 4:23 am
by ajzchips
Don't worry about what's displayed. Any diagnostic program will show you that the CPU is at 450MHz...
Posted: Wed Dec 08, 2004 12:00 pm
by Pit-Dralon
hi,
oh fine.
is the K6-2 400 the fastest CPU which is named correctly by the BIOS?
when setting the CPU to 75 / 83 mhz, do i overclock the bus to 37,5 / 41,5 mhz, or does this mobo distinguish between CPU- and bus-frequence?
br, pit
Posted: Wed Dec 08, 2004 1:51 pm
by KachiWachi
Possibly.
One of my future projects was to have BiosMan patch this BIOS for the K6-2/III+ series CPU. At 6x83MHz, you would have 500MHz on tap. My only issue would be if the SIMMS could take that, since my board does not have the DIMM sockets installed.
If I remember correctly, the 75MHz setting will alter (underclock?) the PCI bus clock, but 83MHz will restore it back to 33MHz. I'd have to look at the manual to be sure which way it goes, but I am certain of the 83MHz setting.
AJZ is correct. Since this board uses jumpers, it will be running at the speed you jumper it to, regardless of what is dispalyed by the BIOS.
Posted: Wed Dec 08, 2004 3:20 pm
by ajzchips
Kachiwachi's right regarding the PCI SYCN/ASYNC doubt. On those older chipsets, it's somwhat hard to find documentation on whether PCI=75/2 or PCI=75/2.5, especially when there's no PCI ASYNC jumper (or BIOS option).
On the TXPRO boards, for instance, a BIOS engineer mentioned at the PCCHIPS Lottery forum that @75MHz, the PCI divisor was 2.5, making it run at 30MHz (underclocked), but I am still convinced it's 2.0 instead...
Anyway, it wouldn't really matter because MOST PCI cards run fine at 37.5MHz...