please check , am i doing the rite steps for writing the program:-

1) Firstly i used DOS Edit to rite the following program:-

ORG 00H
MOV R0,#51D
MOV R1,#101D
DELAY1, MOV R3,#101D

DJNZ R3,$ (we get a value 100 after that,)
DJNZ R1,DELAY1 (R3 runs 100*100)
DJNZ R0,DELAY1 (Ro firstly decrement to 50 ,then comes the value 100*100, so the program [(100*100)+(100*100)]*50 )
CPL P1.0
RET

2) Then i save the above program as waqar.asm.

3)then i run D:>X51 waqar.asm

4) if no errors then make the object file as

D:>L51

5) Now i have a problem after this:-

when i try to load the simulator 89pro by writing :-

D:>89PRO

it does not ask me COM1 or COM3 it just stay on edit showing the company name, i ahve re-installed it by no use...

Are there window based assmebly simutors which show graphical representation..( for free offcourse)