This project presents the design and implementation of a microsystem based on the 8086 microprocessor. The system includes a central unit, EPROM and SRAM memories, serial and parallel interfaces, mini-keyboard, LEDs, 7-segment display, and LCD module, as well as programs for its configuration and operation.
- Central unit with 8086 microprocessor
- 128 KB EPROM memory, using 27C512 circuits
- 64 KB SRAM memory, using 62256 circuits
- Serial interface with 8251 circuit, placed in the 04D0H – 04D2H or 05D0H – 05D2H area, depending on the position of microswitch S1
- Parallel interface with 8255 circuit, placed in the 0250H– 0256H or 0A50H – 0A56H area, depending on the position of microswitch S2
- A mini-keyboard with 9 contacts
- 10 LEDs
- A 7-segment display module with 8 ranks (maximum 8 hex characters can be displayed simultaneously)
- An LCD module with 2 lines of 16 characters each
All assembly routines are available in the src directory:
- Programming routines for 8251 and 8255 circuits
- Character transmission/reception routines on the serial interface
- Character transmission routine on parallel interface
- Mini-keyboard scanning routine
- LED on/off routine
- Routine for displaying a hex character on a segment rank
Dobra Mihai
Politehnica University of Timișoara
Faculty of Automation and Computer Science
Microprocessor Design
Academic Year 2024-2025
Please read CONTRIBUTING.md for details on our code of conduct and the process for submitting pull requests.