Actually programmer's view of the computer hardware
- Can't understand things like WHILE
- Use compiler to translate Pascal to Machine Language
- numbers represent instructions
- numbers represent data
- Assembler Language is a touch above machine language
- mnemonics for instructions
- names for data locations
- Memory
0 1 2 3 4 5 6 7 8 9
+-+-+-+-+-+-+-+-+-+-+
- 00 | | | | | | | | | | |
+-+-+-+-+-+-+-+-+-+-+
- 10 | | | | | | | | | | |
+-+-+-+-+-+-+-+-+-+-+
- 20 | | | | | | | | |
- CPU
- Instructional Pointer register
- +-+-+-+-+-+-+-+-+
- | | | | | | | | | IP
- +-+-+-+-+-+-+-+-+
- | | | | | | | | | IP
- +-+-+-+-+-+-+-+-+
- Instruction Register
- +-+-+-+-+
- | | | | | IR
- +-+-+-+-+
- | | | | | IR
- +-+-+-+-+
- Arithmetic Register/Accumulator/Computational
- +-+-+-+-+-+-+-+-+-+-+
- | | | | | | | | | | | AX
- +-+-+-+-+-+-+-+-+-+-+
- | | | | | | | | | | | AX
- +-+-+-+-+-+-+-+-+-+-+
- Condition Flag
- +-+
- | | CF
- +-+
- | | CF
- +-+
- Instructional Pointer register
copy ax, x add ax, y copy cn1, ax copy ax, cn1 copy z, ax z := x + y;Remember, Really All Numbers
- Get instruction from memory
- Carry out instruction
- Right to Left movement
- like readln and writeln
- deals only with integers
- cmp instruction
- jmp, jnb, jb instructions