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A microprocessors design project from spring 2004 where students are required to create a single board computer using an 8086/80c186xl system, 8-bit sram, eeprom, and intel 82c55a-2 pio unit. Students must also design and implement an arbitrary logic function. The project includes creating a design specification, schematics, simulation results, hand-calculated derivations, and a report.
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Design a single board computer for a more-or-less complete 8086/80C186XL-based system containing at least 128k x 8 bytes of SRAM using 8-bit wide SRAM chips of your own choice, at least 64k of EEPROM, and at least one Intel 82C55A-2 PIO unit connected to the lower data bus through a tri-state transceiver designed in a CPLD/FPGA. In addition, your design must include an arbitrary logic function that provides external signals that perform a useful external operation of your own specification. Some possible choices are
The key assignment problem is to provide a complete interface that includes all circuitry necessary to cause your 8-bit SRAM to appear as a 16-bit fully double banked SRAM to the 8086/8OC186XL. This will require that you to provide an 8-bit to 16-bit trans-multiplexer function in your PLD device. Your logic design may or may not fit inside the smaller MAX7032 type CPLD so you will probably need to consider a larger and faster Altera CPLD/FPGA. A generally guideline is to use design parts that are available in the Mentor Graphics SmartmodelTM^ Library.
Submit a written report that will include the following:
estimated costs, and any other pertinent information your team used, and
Your design specification should include as a minimum a text description, a system block diagram, state diagram(s), address decoding details and logic diagram(s) of any special functions you plan to implement as well as a table of components (called a bill of materials (BOM) in manufacturing circles).