Guys I am sorry I couldn't reply.
Had a swelling in fingers,perhaps due to over computer usage...

ANy ways the project has not made any headways,
read a couple of books again,but the whole concept of interrupt serial comm is not working with the hardware.

I mounted the circuit on bread board today 06 march 2004 after the forcible break.

It still doesnt seems to be right

I have written a program to do the following

1. First on startup switches on a led connected to p1.0 .

2. It keeps flashing the same led in step 1 it every 50ms ( timer 0) AND send C and LF AND CR to SERial port

3. A counter r0 is used to load the timer 255 times

then after 255 times the counter is reloaded ,sends R to indicate reload and the process begins again.

I use two interrupts one for timer 0 and other for serial

since the program is too long for this forum I have put it on a website please let me know what's wrong.
http://www.ikraft.biz/project/LEDTEST.asm
http://www.ikraft.biz/project/LEDTEST.HEX

Currently this program is sending me only to next line
continously ( no other char are transmitted)& led is flashing properly

Also I would appreciate if some one can send me a program that sends charachters and receives charachters ( for commands like t for transmit)

interrupt driven not polling.All over the net I got polling and the interrupt driven once I came across was not so easy to understand.
See I am still a beginner with hardly 2 to 3 small programs to my credit :-)


Thank you very much
Deepak