EP1200 VM

prefix notation. What would be the expression in postfix notation?

OO language: Class-level vs. Method-level variables and their corresponding memory segment NAME

Class-level:

• Static = Static variable (class-level)

• this = Private Variable (object-level)

Method-level:

• local = local variable

• argument = argument variable

HIGHER-LEVEL JACK:
Prior calling a method with n arguments, the compiler has to push … arguments to the stack.

n+1 arguments [this, nArgs]

In Jack, what does “this” point to?

What about LCL and ARG?

this points to the base address of an OBJECTS field variables, stored in the heap.

LCL and ARG point to local variables and argument variables of method/function, stored in the stack.

Define scope, segment of the following Jack language syntax:
static

field

var

argument

static: class-level, static segment RAM[16–255]

field: object-level, heap

var: subroutine-level, stack

argument: subroutine-level, stack