A small MIPS CPU core originally based on Sarah L. Harris MIPS CPU ("Digital Design and Computer Arhitecture" by David Money Harris and Sarah L Harris). The first version of schoolMIPS was written for Young Russian Chip Architects summer school.
Next version of schoolMIPS is based on RISC-V architecture: schoolRISCV
The CPU have several versions (from simple to complex). Each of them is placed in the separate git branch:
- 00_simple - the simplest CPU without data memory, programs compiled with GNU gcc;
- 01_mmio - the same but with data memory, simple system bus and peripherals (pwm, gpio, als);
- 01_mmio_sv_dpi - the same but with data memory, simple system bus and peripherals (pwm, gpio, als);
- 02_irq - data memory, system timer, interrupts and exceptions (CP0 coprocessor);
- 03_pipeline - the pipelined version of the simplest core with data memory
- 04_pipeline_irq - the pipelined version of 02_irq
Examples of using this kernel as an element of a multiprocessor system:
- A.E. Ryazanova, A.A. Amerikanov, E. V Lezhnev, Development of multiprocessor system-on-chip based on soft processor cores schoolMIPS, J. Phys. Conf. Ser. 1163 (2019) 012026. doi:10.1088/1742-6596/1163/1/012026.
- Innovate FPGA 2019 project: EM028 » NoC-based multiprocessing system prototype
For docs and CPU diagrams please visit the project wiki
