Text 1. The read-only- memory basic input-output system (rom-bios)

The ROM-BIOS is the part of ROM that is in active use all the time the computer is at work.

The role of the ROM-BIOS is to provide the fundamental services that are needed for the operation of the computer.

For the most part, the BIOS controls the computer’s peripheral devices, such as the display screen, keyboard, and disk drives.

When we use the term BIOS in its narrowest sense, we are referring to the device control programs - the programs that translate a simple command, such as read-something-from-the-disk, into all the steps needed to actually perform the command, including error detection and correction.

Conceptually, the BIOS programs lie between our programs(including DOS) and the hardware.

In effect, this means that the BIOS works in two directions in a two-sided process.

One side receives requests from programs to perform the standard BIOS input/output services.

The other side of the BIOS communicates with the computer’s hardware devices, using whatever detailed command codes each device driver requires.

The IBM PC family, like all computers based on the Intel 8086 family of microprocessors, is controlled largely through the use of interrupts, which can be generated by hardware or software.

The BIOS service routines are no exception; each one is assigned an interrupt number that we must call when we want to use the service.

When an interrupt occurs, control of the computer is turned over to an interrupt-handing subroutine that is often stored in the system’s ROM (a BIOS service routine is nothing more than an interrupt handler).

Черкаський політехнічний технікум

Текст № 1

для студентів III курсу, 6 семестр (ПС)

Викладач Горпинко В.П.

ACTIVE VOCABULARY

ROM - ПЗП (постійний запам`ятовуючий пристрій)

hardware - апаратна частина

interrupts - переривання

interrupt handler - обробщик переривання

Word combinations

ROM-BIOS - базова система уведення-виводу постійного запам`ятовуючого пристрою)

fundamental services - основополагаючі функції

device control programs - програми керування пристроями

іn effect - тобто

service routines - програми обслуговування

interrupt-handing subroutine - підпрограма обробки переривання

MAKE UP ALL TYPES OF QUESTIONS TO THE TEXT:

1.

2.

3.

4.

Insert the proper word

1. The role of the ………….. …………….. is to provide the fundamental services that are needed for the operation of the computer.

2. Conceptually, the ……………. …………. lie between our programs(including DOS) and the hardware.

3. The other side of the BIOS …………… with the computer’s hardware devices, using whatever ……………… ……………… codes each device driver requires.

4. The IBM PC family, like all computers based on the Intel 8086 family of microprocessors, ……… ………………… largely through the use of interrupts, which can be generated by …………… or software.

Черкаський політехнічний технікум

Текст № 1

для студентів III курсу, 6 семестр (ПС)

Викладач Горпинко В.П.