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#1
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detecting Processor
more often then not my POST screen does not detect my processor but device
managaer does, I know this isn't that big of a problem but I was wondering what causes it. |
#2
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Jamie wrote:
more often then not my POST screen does not detect my processor but device managaer does, I know this isn't that big of a problem but I was wondering what causes it. And the processor is? |
#3
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XP 2800
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#4
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Jamie wrote:
XP 2800 Hmm. Does the POST say ANYTHING about the processor? Does it complain about the processor? Does it actually say "undetected/invalid" or some other message, or does it simply skip listing the processor during POST? I wouldn't worry about it TOO much, as perhaps the BIOS has somehow hidden the info for some reason. |
#5
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no it just skips the message lately and I was wondering what could be the
cause. I mean the processor is fine and whatnot . So what setting would the BIOS have for that or is there one? |
#6
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Jamie wrote:
no it just skips the message lately and I was wondering what could be the cause. I mean the processor is fine and whatnot . So what setting would the BIOS have for that or is there one? Does it at least show the devices being detected (eg. hard drives/optical drives)? Many BIOS' have the option to display a splash screen and avoid printing the info that might "intimidate" computer n00bs. In any case, check your BIOS settings for anything related to the startup of the computer. |
#7
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ya i have the "full screen display" off it shows all 4 IDE channels even
though I am only using 2. it is only recently it hasn't been showing the processor |
#8
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Jamie wrote:
ya i have the "full screen display" off it shows all 4 IDE channels even though I am only using 2. it is only recently it hasn't been showing the processor Only recently? If you haven't been picking at the BIOS or modifying the hardware to cause this change to occur, I'm afraid I'm out of ideas. Cross your fingers and hope that nothing's wrong. |
#9
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it works when it wants to, no biggie. I have RAM that is being replaced
mabe that is the cause I have no clue. I'm not worried it isn't like it is a big issue or anything, thanks for the help |
#10
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With Athlon XP's (and many others AMD CPUs, dont remember when they started,
but it is not so important now), BIOS automatically detects the CPU and sets its namestring (both). (yes, it is the namestring returned by CPUID instruction) Windows (and many many other programs!) takes namestring set by BIOS and displays it. So if your system (Windows) says that you have "AMD Athlon 2800+" or something this style, everything is OK. (if it returns AuthenticAMD, something went wrong... try updating your BIOS) BIOS just only doesn't display this string. It can be up to 47+nul chars long (nul is used for termination) Source: AMD Processor Recognition Application Note, pages 97-100 ( 20734.pdf ) Have a nice day Zdenek Sojka Here is code to set namestring when booted from floppy and then automatically continues boot from HDD: (changes namestring to AMD Athlon XP 4200+ :-) You need some software to compile this (NASM) and some to write to floppy (rawrite) org 7c00h BOOT: jmp near PRES db 'SmatZ! ' dw 0x0200 ;bytes / sector db 0x01 ;sects / cluster dw 0x01 ;sektoru pred FAT (tento sektor) db 0x02 ;pocet FAT dw 0x00e0 ;polozek / root dw 0x0b40 ;sects / partition db 0xf0 ;deskriptor (typ) media dw 0x0009 ;sect / FAT dw 0x0012 ;sect / cyl dw 0x0002 ;heads dw 0x0000 ;skryte sektory dw 0 ;special hidden sectors dd 0 ;big total number of sectors dw 0 ;fyzicke cislo disku db 0x29 ;signatura rozsireneho boot-sektoru dd -1 ;serial number db 'NameString ' ;volume label db 'FAT12 ' ;system souboru PRES: jmp 0:INIT INIT: pushad push ds push es push fs push word 0xb800 pop fs mov dword [fs:0],0 mov dword [fs:4],0 xor ax,ax mov ds,ax mov es,ax mov si,0x7c00 mov di,0x8000 mov cx,0x80 rep movsd mov word [fs:0],0x0f30 jmp 0:MAIN+0x400 MAIN: mov word [fs:2],0x0f31 mov ecx,0xc0010030 ..l mov eax,[ecx*8+NameString-0x10030*8+0x400] mov edx,[ecx*8+NameString-0x10030*8+4+0x400] wrmsr inc ecx cmp ecx,0xc0010036 jb .l mov word [fs:4],0x0f32 mov dx,0x0080 mov cx,1 mov ax,0x0201 mov bx,0x7c00 int 0x13 mov word [fs:6],0x0f33 pop fs pop es pop ds popad jmp 0:0x7c00 NameString: db 'AMD Athlon(tm) XP 4200+' %if ($-NameString) 47 %error "Prilis dlouhy retezec. Maximum je 47 znaku." %endif times 48-($-NameString) db 0 times 510-($-$$) db 0 dw 0xaa55 "Jamie" píše v diskusním příspěvku ... it works when it wants to, no biggie. I have RAM that is being replaced mabe that is the cause I have no clue. I'm not worried it isn't like it is a big issue or anything, thanks for the help |
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