yakir8 / cpu

CPU Project

Summary

This repository include single-cycle CPU and pipelined CPU. these CPUs support arithmetic and logic operation. In addition, these CPUs can read and write to external FIFO memory.

List of Aailable Oeration

• NOP
• INC
• ADD
• ADD_INC
• SUB_1C
• SUB
• DEC
• MOV
• AND
• OR
• XOR
• NOT
• SHIFT_RIGHT
• SHIFT_LEFT
• LOAD_FIFO
• STORE_FIFO
• STORE
• LOAD
• ADD_IM
• SUB_1C_IM
• SUB_IM
• MOV_IM
• AND_IM
• OR_IM
• XOR_IM
• BRANCH_C
• BRANCH_NC
• BRANCH_Z
• BRANCH_NZ
• BRANCH_O
• BRANCH_NO
• BRANCH_N
• BRANCH_P
• JUMP
• HALT

Interface To External FIFO Memory

Every request to the FIFO for read or write build from two words.

• Word 1:
  • D15:D1 - number of words to write (available only on write requset).
  • D0 - request type. 0 = read | 1 = write.
• Word 2:
  • D15:D0 - RAM address to read or write.

Test Bach

• The file data_ram.mem is for simulat RAM memory.
• The file inst_rom.mem is for simulat ROM memory. this file has program to cpu execute in HEX code. using Assembler.xlsx file we can convert from Assembler anguage to HEX language