A student

i try the correction u made above and this was the error message: Build target 'Target 1'
assembling TEST2.A51...
TEST2.A51(1): error A315: unknown #directive 'INCLUDE'
TEST2.A51(23): error A45: UNDEFINED SYMBOL (PASS-2)
Target not created

i try the correction u made above and this was the error message: Build target 'Target 1'
assembling TEST2.A51...
TEST2.A51(1): error A315: unknown #directive 'INCLUDE'
TEST2.A51(23): error A45: UNDEFINED SYMBOL (PASS-2)
Target not created

Try the leading zero in the mov A,#(AAh) to mov A,#(0AAh)

#INCLUDE <REG52.h>

DELAY:
   mov   R0,#(11)
H1:
   mov   R1,#(248)
H2:
   mov   R3,#(255)
H3:
   DJNZ   R3,H3
   DJNZ   R1,H2
   DJNZ   R0,H1
RET


BACK:
   mov   A,#(55h)
   mov   P1,A

   ACALL DELAY

   mov   A,#(0AAh)
   mov   P1,A

   ACALL DELAY

   SJMP  BACK

END

--Cpt. Vince Foster
2nd Cannon Place
Fort Marcy Park, VA

Captain, if you continue posting source code at this rate, Jack Sprat is likely to start complaining about your "cowboy" debugging technics...

the error is now : Build target 'Target 1'
assembling TEST2.A51...
TEST2.A51(1): error A315: unknown #directive 'INCLUDE'
Target not created

No kidding.

--Cpt. Vince Foster
2nd Cannon Place
Fort Marcy Park, VA

i was just trying to see how i can correct this problem.so donot be angry.

Don't make me come down there and fix it!
(At this point, you may need a sardine's take on it)

Are you sure about the #include <REG52.H> ?
Try localizing it (move REG52.H to the source file directory) and do the #include "REG52.H" thing.

(I really don't want to create a project just do debug this stupid, err, sample code).

--Cpt. Vince Foster
2nd Cannon Place
Fort Marcy Park, VA

I be thinking I ansewrd it in the thread:

http://www.keil.com/forum/docs/thread15468.asp

You be looking at page:

http://www.keil.com/support/man/docs/a51/a51_include.htm

$include

NOT

#include

ANSI Assembly ?

(knowing too many assemblers can get in the way... not to mention that I've been up since 3:30AM too)

--Cpt. Vince Foster
2nd Cannon Place
Fort Marcy Park, VA

Come on, guys, you both need to look carefully at the error message to see exactly what it is telling you!

Read it literally: "unknown #directive 'INCLUDE'"

It is teling you that 'INCLUDE' is not recognised as a #directive; ie, #INCLUDE is not valid A51 syntax.

The valid syntax for $INCLUDE is shown here: http://www.keil.com/support/man/docs/a51/a51_include.htm

An example using #include is shown here: http://www.keil.com/support/man/docs/a51/a51_in_templatefile.htm

Spot the difference...

thanks guy u are cool.

thanks!the code is now error free.
one cup of tea for u.

Read it literally: "unknown #directive 'INCLUDE'"
It is teling you that 'INCLUDE' is not recognised as a #directive; ie, #INCLUDE is not valid A51 syntax.

An example using #include is shown here:

finally SHOUTING bites somebody in the largest muscle.

Erik

My first ventures into assembly language (PDP-8) was entered on a teletype (no lowercase characters).

Is this the cause of some still writing assembler in uppercase?

Erik

Is this the cause of some still writing assembler in uppercase?

I used mixed case in assembly... upper-case instructions denotes a program counter change (other than n+1), while the rest of the instructions are in lower-case.

A pop of the ACC would be: pop ACC
A pop of the PC would be: POP PC (non-8051)

That is just my preference/style.

--Cpt. Vince Foster
2nd Cannon Place
Fort Marcy Park, VA

"Is this the cause of some still writing assembler in uppercase?"

Can't speak for everyone else, but I've always done my assembler in upper case. IMHO it looks neater and is easier to follow the code - But maybe that's just habit.

Can't see anything wrong with doing it in upper case or lower case ... So long as the style is consistent.