Real and available memory?

[Krassimir Slavchev]

Julian H. Stacey wrote:
> Krassimir Slavchev wrote:
>   
>> Julian H. Stacey wrote:
>>     
>>> Krassimir Slavchev wrote:
>>>   
>>>       
>>>> Hello,
>>>>
>>>> I have Vortex86-6082 with 128Mb AMI bios.
>>>>
>>>> Why the kernel reports only 80 MB available memory?
>>>> Is this related to BIOS or kernel settings?
>>>>
>>>> dmesg output:
>>>>
>>>> Copyright (c) 1992-2006 The FreeBSD Project.
>>>> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
>>>>         The Regents of the University of California. All rights reserved.
>>>> FreeBSD 6.1-STABLE #0: Wed Jul 26 10:09:06 EEST 2006
>>>>     root at krassi:/usr/obj/usr/src/sys/TINYBSD
>>>> Timecounter "i8254" frequency 1193182 Hz quality 0
>>>> CPU: Pentium (166.61-MHz 586-class CPU)
>>>>   Origin = "SiS SiS SiS "  Id = 0x505
>>>> real memory  = 125829120 (120 MB)
>>>> avail memory = 84332544 (80 MB)
>>>> kbd1 at kbdmux0
>>>> ...
>>>>     
>>>>         
>>> Does the mboard BIOS on monitor at boot recognise all 128 M ? 
>>>
>>> I've seen boards that only recognised 1/4 of the SIM size.
>>> 80 seems a bit of an odd (non hex) number though.
>>>
>>>   
>>>       
>> Yes, at boot the board recognizes 128Mb. The RAM is embedded on the board.
>> The kernel reports real 120 Mb because maybe 8 Mb is used by video card.
>> I don't know why exact 80Mb is reported but 80 = 64+16.
>>     
>
> Have you tried unplugging every board (inc. ethernet scsi raid etc)
> & plugging in a different (modest, old as possible. less demanding)
> graphic card ? Maybe that'd give a clue, maybe your graphics card
> is taking more than 8M ?
>
>   
No, I can't unplug anything, see: 
http://www.icop.com.tw/products_detail.asp?ProductID=119