Simple Assembly Simulator


I wrote this program a long time ago. Post here for my archival purpose.

 

CPU will have 4 registers: AX, BX, CX, DX.

AX consists of two parts: AH and AL as does other registers.

The instructions op1 and op2 can be any of the following forms:

 reg,reg         reg,immed    reg,mem       mem,reg

immed (immediate value): decimal, hex number or character

This program will load asm codes from a file specified by user, get and trace every code line,  parse this code line,  process the code,  print out in hex value and highlight changes in registers or memory caused by these codes.

support: mov, inc, dec, add, sub, mul, div, neg, and, or, xor, shl, shr, not

calculation will be performed in decimal. but display in hex.

asm code file

-asm is not case sensitive. except for immediate character.

-can be ended with “end” or not

-Between command and operand, operand and operand are spaces or tabs.

-Support inline(after code, not between code) or a separate-line comment: which always begin w/ “;”

-hex number must begin w/ a number and end w/ a character ‘h’. If hex number begins w/ a character, place 0 in front of it.

Ex: ffh have to be rewritten as 0ffh

-Character must be inside single quote. Ex: ‘a’.

 If you enter more, only the first character will be used, the rest will be ignored.

 Ex: ‘asdf’, only ‘a’ is used.

 

Download here

Advertisements
Simple Assembly Simulator

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s