Designing a CPU in VHDL Series Quick Links
RISC-V:
Designing a RISC-V CPU in VHDL, Part 22: Doom as a benchmark and adding Cache to RPUDesigning a RISC-V CPU in VHDL, Part 21: Multi-cycle execute for multiply and divide
Designing a RISC-V CPU in VHDL, Part 20: Interrupts and Exceptions
Designing a RISC-V CPU in VHDL, Part 19: Adding Trace Dump Functionality
Designing a RISC-V CPU in VHDL, Part 18: Control and Status Register Unit
Designing a RISC-V CPU in VHDL, Part 17: DDR3 Memory Controller, Clock domain crossing
Designing a RISC-V CPU in VHDL, Part 16: Arty S7 RPU SoC, Block Rams, 720p HDMI
Designing a CPU in VHDL, Part 15: Introducing RPU
Github RPU CPU Repo
Github Arty S7-50 SoC Repo
TPU:
Designing a CPU in VHDL, Part 14: ISA changes, software interrupts and bugfixing that BIOS code
Designing a CPU in VHDL, Part 13: Memory system and BIOS beginnings
Designing a CPU in VHDL, Part 12: Text mode video output
Designing a CPU in VHDL, Part 11: VRAM and HDMI output
Designing a CPU in VHDL, Part 10b: A very irritating issue, resolved.
Designing a CPU in VHDL, Part 10: Interrupts and Xilinx block RAMs
Designing a CPU in VHDL, Part 9: Byte addressing, memory subsystem and UART
Designing a CPU in VHDL, Part 8: Revisiting the ISA, function calling, assembler
Designing a CPU in VHDL, Part 7: Memory Operations, Running on FPGA
Designing a CPU in VHDL, Part 6: Program Counter, Instruction Fetch, Branching
Designing a CPU in VHDL, Part 5: Pipeline and Control Unit
Designing a CPU in VHDL, Part 4: The ALU, Comparisons and Branching
Designing a CPU in VHDL, Part 3: Instruction Set Architecture, Decoder, RAM
Designing a CPU in VHDL, Part 2: Xilinx ISE Suite, register file, testing
Designing a CPU in VHDL, Part 1: Rationale, tools, method
Github repository with VHDL sources, ISE project, assembler and ISA.