ECE243 Interpreter Lab

Interpreter Lab You write an interpreter EXAMPLE MINI PROGRAM: Clear for a simple accumulator-based virtual ISA ie, a program that executes a simple program an accumulator is just a memory location EXAMPLE MINI PROGRAM: Clear Add 77 Sub 15 Exit

Interpreter in Memory Addr Value 0x20000 mini program … 0x25000 accumulator 0x30000 your interpreter mini insts, like java bytecode 1 word nios program, like java virtual machine (JVM)

HOW EACH MINI INST IS ENCODED: 4 byte opcode 0=clear, 1=add, 2=sub, 3=exit 4 byte operand if appropriate 4 byte address of next instruction

Example 0x20000 0x20004 Memory: 0x20008 0x2000c 0x20010 0x22014 DESIRED MINIPROGRAM Clear Add 77 Sub 15 Exit   ASSEMBLY FILE (ENCODED) Memory: 0x20000 0x20004 0x20008 0x2000c 0x20010 0x22014 0x22018 0x2201c 0x22100 .