## Memory.jack
This library provides two services: direct access to the computer's main memory (RAM), and allocation and recycling of memory blocks. The Hack RAM consists of  3840 words, each holding a 16-bit binary number.

### function void init(int start, int end)
Initializes the class. First address of heap is start, last address of heap is end.
### function int peek(int address)
Returns the RAM value at the given address.
### function void poke(int address, int value)
Sets the RAM value at the given address to the given value.
### function int alloc(int size)
Finds an available RAM block of the given size and returns a reference to its base address.
### function void deAlloc(Array o)
De-allocates the given object (cast as an array) by making it available for future allocations.
***
### Project
* Implement `Memory.jack`
* Test in simulation:
```
$ cd 04_Memory_Test
$ make
$ cd ../00_HACK
$ apio clean
$ apio sim
```

* Check the content of special function register DEBUG0--DEBUG4.

![](memory.png)