EmanOthman21 / PDP-11

A simulation to PDP-11 microprocessor with modelsim, The design is a micro-programmed based with an average of 9 clock cycles per instruction.

PDP-11

Simulation to pdp-11 microprocessor with modelsim , The design is a micro-programmed based with an average of 9 clock cycles per instruction .

Design

• Control Word Design
• System Design

Instructions

• ALU Instructions
  • 2-Operand Instructions:
    • MOV,ADD,ADC,SUB,SUBC,AND,OR,XOR,CMP
  • 1-Operand Instructions:
    • INC,DEC,CLR,INV,LSR,ROR,ASR,LSL,ROL
• Branch Instructions
  • BR,BEQ,BNE,BLO,BLS,BHI,BHS
• 0-Operand Instructions
  • HLT,RST

Addressing modes

• Register Direct
• Register Indirect
• Auto-Increment
• Auto-Increment Indirect
• Auto-Decrement
• Auto-Decrement Indirect
• Indexed
• Indexed-Indirect

Assembler

• An Assembler in python for converting pdp-11 assembly syntax into a binary file.
• refer to Assembler for the implemented features and running instructions .

Run

• Create your project in modelsim.
• Add all the .vhd files in src to the project.
• Write your code in any editor then run it with the assembler to get the binary file.
• start your simulation by running .do file as in c1.do after changing the directory of the c1.mem to the directory of your binary file.

Contributors

• Bassant Mohamed
• Eman Othman
• Menna Mahmoud
• Nada Abdelmaboud

License

MIT licensed