Microprocessor

8088 microprocessor introduced by Intel Corporation in 1978. This microprocessor has started the historical development of the next Intel microprocessors, like 80186, 80286, 80386, 80486, Intel Pentium I, until now an Intel Pentium IV. All the instructions contained in the microprocessor 8088 is fully able to run on Intel microprocessors, the microprocessor. Therefore, to understand the design of hardware and software on the PC now, it helps if you first understand the design of hardware and software on this 8088 microprocessor.

There are two modes that can be used on the microprocessor 8088, the minimum mode and maximum mode. Pen that determines the use of the pen mode is MN / MX. Minimum mode is usually used for simple systems which generally use the processor on a single PCB. While the maximum mode is generally used for more complex systems that use multiple I / O and memory separately and can also be used with co-processor (co-processors for 8088 is 8087). In this home page, the author will only describe the design in the minimum mode only, because it is generally sufficient with only a minimum mode control equipment / automatic control is to be realized.

8-bit microprocessor 8088 has a 20 bit data paths and address paths. Data path has the same pin with address lines, means that at any given moment is used as data lines and at other times used as address lines. Because one pin has two functions, namely as a data path and the path of the address system is used time multiplexing, ie using the same path to the function and different times, so it can not address the data and sent at the same time. Microprocessor 8088 is made in the form of ICs with 40 feet of the pin (DIP type 40).