how to program 8051

hi,
I m a budding electronic hobbyist and i m learning about
microcontrollers these days . I've done enough of theory and now wish
to gain some hands on experience.
I wish to try some programs on 8051 but i have no idea abt UPLOADING
my assembly program to the chip . I've faint idea about existence of
8051 programmers .
Could some1 please give me an idea of how to go about this ?
I wud b very thankful to the one who cud tellme how to proceed once
i've my program ready n i wish to upload it 2 the uC

SOS
ankur

 

any idea what type of 8051 you want to use?
plain 8051/2 needs an eprom. no upload.
flash 8051's can be erased and uploaded.
or you use a version with a bootblock starting at 0000h
and upload and run a program from maybe 1000H

 

If you don't know what kind of 8051 you want to use, I recommend
buying an Atmel 89C4051 (available from any major parts distributor,
such as mouser.com or digikey.com). The 89C4051 has most of the
features you are likely to use if you are just playing around with
programming the chips. This chip typically costs around $5 or so and
programmers are readily available. When you order the chip make sure
to get the other parts you need (crystals, resistors, capacitors,
etc). After you decide on a chip to use, you will have to find some
way to program the chip (or the EPROM that goes with the chip). There
is a design for an Atmel programmer that supports the 89C4051 here:
http://chaokhun.kmitl.ac.th/~kswichit/pgm89_web/Pgm89.html

Personally I have a similar programmer that I bought from
electronics123.com, and I like it a lot.

Next, you will need an assembler. What operating system do you use?
There is an open source assembler/C compiler package called SDCC at
http://sdcc.sourceforge.net that runs on Windows and Linux. You will
need to assemble your program into a hex file and then program it onto
the chip. If you want to get something simple working for starters,
check out the projects at www.iguanalabs.com. They have simple
projects showing you how to implement some of the most common uses of
the chip (LED blinkie, serial port communication, ADC's, LCD displays,
etc). They have working source code and hex files to download.

It's also worth checking out www.8052.com. There are some message
boards and good tutorials on getting started.

Good luck,
-Ben

 

What type of "8051" do you have? There are mnay variations, and it may
make a difference.
Are you sure you want to start with the 8051 though?
The PIC and AVR devices are more popular these days with beginners,
and there is probably more beginner info available on the web etc. You
can program these chips for almost zero cost as far as a programmer
goes.
Or perhaps a BASIC Stamp or PIC-AXE chip would make an easier start?

Dave

 

hi,
you should write an assembly program(eg. xxxx.asm) with a text editor
and then compile it to a hex file(eg.xxxx.hex) with a compiler(eg.
tasm, dasm .... etc), connect your eprom writer to a pc and start the
eprom programming software and burn the xxxx.hex file into 8051, now a
days ATMEL89c51 is more popular than INTEL8051, which has the same
function and same programming, but could be erased by electrical
signal(eeprom).
cs.

 

X-No-Archive: yes

It may be too much to make a programmer by yourself - you may not have
the resources. But simple programmers which enable download your code
through the serial port of your PC are available for prices as low as
USD 30 or so.

 

Thnx a lot guys .. ur replies cleared lot many doubts but raised a few
as well . I wish 2 get them cleared as well ..
I've managed 2 get one 8051 chip - AT89C51 but cud not manage 2 get
it's programmer . I found 1 but it was way over my budget .
Some of u mentioned( cs ..i suppose) tht an EPROM programmer can also
b used in ATMEL chips . I can get ROM programmer .. so i wud lik 2
know whether the chip i've described is programmable thru a ROM
programmer ?
Secondly , I also wish to learn how 2 use ROMs instead of 8051 flash
memory 2 store ur programs ... can ne1 show me the way 2 a tut on web
?

hope 2 get a few more replies ..
regards,
Ankur