UPGRADING REPAIRING PCs
UPGRADING REPAIRING PCs
UPGRADING REPAIRING PCs
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80<br />
Chapter 3—BIOS Configurations and Upgrades<br />
Interpret a number such as this one with the following numerical<br />
key (see Table 3.7):<br />
AB-CCCC-DDDDDD-EFGHIJKL-mmddyy-MMMMMMM-N<br />
Table 3.7 AB-CCCC-DDDDDD-EFGHIJKL-mmddyy-MMMMMMM-N<br />
Position Description<br />
A Processor Type:<br />
0 = 8086 or 8088<br />
2 = 286<br />
3 = 386<br />
4 = 486<br />
5 = Pentium<br />
6 = Pentium Pro/II<br />
B Size of BIOS:<br />
0 = 64KB BIOS<br />
1 = 128KB BIOS<br />
CCCC Major and minor BIOS version number<br />
DDDDDD Manufacturer license code reference number:<br />
0036xx = AMI 386 motherboard, xx = Series #<br />
0046xx = AMI 486 motherboard, xx = Series #<br />
0056xx = AMI Pentium motherboard, xx = Series #<br />
0066xx = AMI Pentium Pro motherboard, xx = Series #<br />
(for other numbers see the following note)<br />
E 1 = Halt on POST Error<br />
F 1 = Initialize CMOS every boot<br />
G 1 = Block pins 22 and 23 of the keyboard controller<br />
H 1 = Mouse support in BIOS/keyboard controller<br />
I 1 = Wait for F1 key on POST errors<br />
J 1 = Display floppy error during POST<br />
K 1 = Display video error during POST<br />
L 1 = Display keyboard error during POST<br />
mmddyy BIOS Date, mm/dd/yy<br />
MMMMMMM Chipset identifier or BIOS name<br />
N Keyboard controller version number
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