Some Problems

Notes

• Multiplication
  • There are two forms of integer multiplication
    • mul is for unsigned integer multiplication
    • imul is for signed integer multiplication
  • Both support the extend format
    • Place a value in the a register
    • mul operand
    • The result is stored in the *a register and the *d register.
    • This allows for the full range of multiplication for two n bit numbers -> one 2n bit number
    • 
  • imul also supports a multiple argument format
    • imul src *a = *a * src
    • imul dest, src dest = dest * src
    • imul dest, src, imm dest = src * imm
• Write a program that produces the n! table to the accuracy of the machine
• fact.asm
• Write a program that produces the first ten integer powers of 1 - 5
• powers.asm
• For now: indexing [base address + register + constant] will index into an array.
• Write a program that will read in a string and convert it to lower case letters.
• wordFixer.asm