User manual GIGABYTE GA-586DX

[. . . ] GA - 586DX USER'S MANUAL Dual PENTIUM® PCI - ISA BUS MAINBOARD REV. 1 Third Edition GA-586DX The author assumes no responsibility for any errors or omissions which may appear in this document nor does it make a commitment to update the information contained herein. IBM PC/AT, PC/XT are trademarks of International Business Machine Corporation. PENTIUM is a trademark of Intel Corporation. AWARD is a trademark of Award Software, Inc. [. . . ] Base Memory The POST of the BIOS will determine the amount of base (or conventional) memory installed in the system. The value of the base memory is typically 512 K for systems with 512 K memory installed on the motherboard, or 640 K for systems with 640 K or more memory installed on the motherboard. Extended Memory The BIOS determines how much extended memory is present during the POST. This is the amount of memory located above 1 MB in the CPU's memory address map. Expanded Memory Expanded Memory in memory defined by the Lotus/Intel / Microsoft (LIM) standard as EMS. Many standard DOS applications can not utilize memory above 640 K, the Expanded Memory Specification (EMS) swaps memory which not utilized by DOS with a section, or frame, so these applications can access all of the system memory. Memory can be swapped by EMS is usually 64 K within 1 MB or memory above 1 MB, depends on the chipset design. Expanded memory device driver is required to use memory as Expanded Memory. 4-8 BIOS Configuration Other Memory This refers to the memory located in the 640 K to 1024 K address space. This is memory that can be used for different applications. DOS uses this area to load device drivers to keep as much base memory free for application programs. Most use for this area is Shadow RAM. 4. 6. BIOS FEATURES SETUP ROM PCI / ISA BIOS BIOS FEATURES SETUP AWARD SOFTWARE, INC. Virus Warning CPU Internal Cache External Cache Quick Power On Self Test Boot Sequence Swap Floppy Drive Boot Up Floppy Seek Boot Up NumLock Status Typematic Rate Setting Typematic Rate (Chars/Sec) Typematic Delay (Msec) Security Option PCI/VGA Palette Snoop MP SPEC. For Single CPU OS Select For DRAM >64MB : Disabled : Enabled : Enabled : Enabled : A, C : Disabled : Enabled : On : Disabled :6 :250 : Setup : Disabled : Enabled : Non-OS2 Video BIOS Shadow C8000 - CBFFF Shadow CC000 - CFFFF Shadow D0000 - D3FFF Shadow D4000 - D7FFF Shadow D8000 - DBFFF Shadow DC000 - DFFFF Shadow : Enabled : Disabled : Disabled : Disabled : Disabled : Disabled : Disabled ESC F1 F5 F7 : Quit PU/PD/+/: Help : Old Values (Shift)F2 : Load Setup Defaults : Select Item : Modify : Color · Figure 4. 3: BIOS Features Setup Virus Warning This category flashes on the screen. During and after the system boots up, any attempt to write to the boot sector or partition table of the hard disk drive will halt the system and the following error message will appear, in the mean time, you can run antivirus program to locate the problem. Enabled Activate automatically when the system boots up causing a warning message to appear when anything attempts to 4-9 GA-586DX Disabled access the boot sector or hard disk partition table No warning message to appear when anything attempts to access the boot sector or hard disk partition table · CPU Internal Cache / External Cache These two categories speed up memory access. However, it depends on CPU / chipset design. Enabled Disabled Enable cache Disable cache · Quick Power On Self Test This category speeds up Power On Self Test (POST) after you power on the computer. If it is set to Enable, BIOS will shorten or skip some check items during POST. Enabled Disabled Enable quick POST Normal POST · Boot Sequence This category determines which drive computer searches first for the disk operating system (i. e. , DOS). A, C System will first search for floppy disk drive then hard disk drive C, A System will first search for hard disk drive then floppy disk drive Swap Floppy Drive The default value is Disabled. Enabled Disabled Floppy A & B will be swapped under DOS Floppy A & B will be normal definition · · Boot Up Floppy Seek During POST, BIOS will determine if the floppy disk drive installed is 40 or 80 tracks. [. . . ] Test base memory from 256 K to 640 K and extended memory above 1 MB using various patterns. F This will be skipped in EISA mode and can be "skipped" with ESC key in ISA mode. If EISA Mode flag is set then test EISA memory found in slots initialization. F This will be skipped in ISA mode and can be "skipped" with ESC key in EISA mode. 20 21-2F 30 31 Enable Slot 0 Enable Slots 1-15 Size Base and Extended Memory Test Base and Extended Memory 32 Test EISA Extended Memory 33-3B 3C 3D 3E 3F BF 40 41 42 43 Reserved Setup Enabled Initialize & Install Mouse Setup Cache Controller Reserved Chipset Initialization Initialize Floppy Drive & Controller Initialize Hard Drive & Controller Detect & Initialize Serial/Parallel Ports Reserved Detect & Initialize Math Coprocessor Reserved Reserved Initialize math coprocessor. [. . . ]