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Ken Chapman’s PicoBlaze processor at ftp: Hand-code a machine language program from assembly language. You may use an assembler to check your work probably a good idea to do so The simulation capability is a big plus for this package.
The editor will boldface the mnemonic when it recognizes it. In subsequent labs you will learn how to directly incorporate the assembler output into your system.
I suggest that you start with the PicoBlaze interface template diagram and hand-draw the rest of your system on the diagram. See the pBlaze IDE web page for more details on syntax: Here’s some things to know about the pBlaze IDE: Read the PicoBlaze application note, especially the section detailing the instruction set.
Create a hardware block diagram for your system showing the processor, the external interface registers, and other major components of your system.
PicoBlaze homepage at Xilinx: The program ROM must be a synchronous ROM, otherwise serious timing errors in the processor’s read and write strobes will become apparent.
For questions or comments regarding this web contact: Create a top-level module that contains the following: Deliverables Brief cover memo that describes your design Block diagram of your hardware Processor program, both in assembly language format dstasheet form and machine instructions sequence of bit binary and hexadecimal values Hardcopy of all synthesizable Verilog files that you create Demonstration of your design to instructor obtain initials Due Date Beginning of lab one week from today.
d2sb datasheet & applicatoin notes – Datasheet Archive
For now, simply look at the hexadecimal listing in the simulator to verify your hand-coded machine instructions. INPUT s0, 00 1: Manually translate the assembly language program into machine language a sequence of bit values.
PicoBlaze processor tie the interrupt input to inactive level In this lab you will gain experience working the PicoBlaze embedded processor, an 8-bit microcontroller created by Ken Chapman of Xilinx. The assembly language mnemonics differ slightly from those in Ken Chapman’s PicoBlaze manual.
Click the blue d2sn to return to the editor. A synchronous ROM simply means that the ROM output is a register that is clocked on the rising edge of the system clock.
Use PicoBlaze soft processor.
Wave your cursor over the buttons to learn what they mean. Create catasheet simple assembly language program, e. When you have cleared all the syntax errors, you will be presented with a panel that looks like this: Here is an example of a short machine language program in synchronous ROM that could be included in your top-level module: Use “equates” EQU to establish symbolic names for port numbers and constants.