I'm trying to create a calculator in MARIE Assembly Language. After some brain storming, I have addition, subtraction, and multiplication codes. I'm completely new to this language and would like to get some help on how to get started. Any help will be appreciated. Thanks

ORG 100 /Start

Input

Store A

Input

Store B

Load A /Put Number A into AC

Subt B /Substract from AC

Store Sum /Save sum

Output

Halt /End program

A, Dec 0 / values

B, Dec 0 / values

Sum, Dec 0 / Result, initially 0 overwritten by code

END

ORG 100 /Start

Input

Store A

Input

Store B

Load A /Put Number A into AC

ADD B /Add from AC

Store Sum /Save sum

Output

Halt /End program

A, Dec 0 / values

B, Dec 0 / values

Sum, Dec 0 / Result, initially 0 overwritten by code

END

Input /Input A value

Store A

Input /Input B value

Store B

Loop, Load B

Skipcond 800 If AC > 0, continue loop

Jump Endloop

Subt One

Store B

Load C

Add A

Store C

Jump Loop

Endloop, Load C

Output

Halt

C, DEC 0

A, DEC 0

B, DEC 0

One, DEC 1