What is the serial input output data lines used for?

What is the serial input output data lines used for?

serial input/output (SIO) A method of communicating data between devices, typically a computer and its peripherals, the individual data bits being sent sequentially.

What are serial port pins of 8085?

The 8085 microprocessor has two pins specially designed for software control serial I/O. One is called SOD (serial output data) and the other is called SID (serial input data). Data transfer is controlled through two instructions SIM &RIM. The instruction SIM is necessary to output data serially from the SOD line.

Does 8085 have serial I O control?

Serial I/O signals There are 2 serial signals, i.e. SID and SOD and these signals are used for serial communication. SID (Serial input data line) − The data on this line is loaded into accumulator whenever a RIM instruction is executed.

What is minimum and maximum mode in 8086?

In minimum mode there can be only one processor i.e. 8086. In maximum mode there can be multiple processors with 8086, like 8087 and 8089. ALE for the latch is given by 8086 as it is the only processor in the circuit. ALE for the latch is given by 8288 bus controller as there can be multiple processors in the circuit.

What is type1 interrupt?

TYPE 1 interrupt represents single-step execution during the debugging of a program. TYPE 2 interrupt represents non-maskable NMI interrupt. TYPE 3 interrupt represents break-point interrupt. TYPE 4 interrupt represents overflow interrupt.

What is minimum mode of 8086?

The 8086 microprocessor operates in minimum mode when MN/MX’ = 1. In minimum mode,8086 is the only processor in the system which provides all the control signals which are needed for memory operations and I/O interfacing. Here the circuit is simple but it does not support multiprocessing.

How many latches are required for 8086 processor?

Clock is provided by the 8284 clock generator, it provides CLK, RESET and READY input to 8086. Address from the address bus is latched into 8282 8-bit latch. Three such latches are needed, as address bus is 20-bit.