BIOSBASIC

INPUT

OUTPUT

SYSTEM

BASIC INPUT/OUTPUT SYSTEM

¿ WHAT IS THE BIOS AND WHAT IS?

The BIOS is a firmware installed on computers, contains the basic instructions for them to function and perform adequately, basic routines may include control devices

¿ WHAT IS A FIRMWARE?

is a block of instructions for very specific purposes, are of type ROM, set logic low level, and this is why, in order to control the electronics of a device of any kind.

Now the firmware is considered a hybrid between software and hardware, to be integrated into the electronic part, belongs to the hardware, but in turn also provides Software as logic and set to a programming language, in this case Assembler code

THREE TYPES OF BIOS AND DIFFERENCE IN THE METHOD  THAT IS USED TO RECORD

ROM ---> It can only record at the time the chip is manufactured. N The information it contains will not be altered.

EPROM --->Erasable Programmable Read-Only Memory (ROM programmable borrable). Estos chips se pueden grabar con luz ultravioleta. En la parte superior del chip se puede apreciar una especie de ventanilla transparente, que suele estar tapada con una pegatina. Estas BIOS se encuentra principalmente en 286 y 386.

EEPROM( Electrical Erasable and Programable Read-Only Memory), that means, read-only memory that can be erased and more, can be programmed electrically

BIOS ACCESS AND MANIPULATION

To access the BIOS Setup program, usually called CMOS Setup, we will do this by pressing a button during the initial start up your computer. Usually it the Delete key but this varies by type of plate

Delete key,Del key,"F2""Ctrl + Alt + Esc""F1"Key "F10""Ctrl + Alt + S"

IMAGES OF THE BIOS AND SETUP

BASE MEMORY: the amount of ram that comes with each model of a particular computer.

CHIPSET FEATURES SETUP: this part allows you to modify critical system parts such as processors, dma channels, memory, ram, one of its functions is to enable usb ports

CPU SOFT MENU: since this option will adjust all the parameters of our microprocessor voltages, multiplier and bus

DRIVE A : almost all computers are incorporating a 3.5-inch floppy drive. so usually along the line

ESTANDAR CMOS FEATURES : through this menu you can, for example, set the date and time of your comput

GLOSSARY BIOS

EXTENDED MEMORY: is memory above and beyond the standard 1mb (megabyte) of main memory that dos extended memory, on the other hand, is not configured in any special manner and is therefore unavailable to most dos programs. however, microsoft windows and os/2 can use extended memoryPOWER MANAGEMENT: enables or disables the power saving

SPEED ERROR HOLD: this field refers to behavior that will make the machine if we select a wrong speed.

STANDARD CMOS SETUP: here, among other routines, you can change, set the system date, set the hard drives and floppy set that we have

TURBO FRECUENCY: used to force the external clock speed to 2.5 x. in principle there is only for quality control and verify that a system operates correctly over its specifications