Hello Sebastian,
The 6809 dates back more than 25 years. I would suggest that you do a Google search on "Motorola 6809" - it seems to present quite a few relevant references. Here is the Wikipedia reference
http://en.wikipedia.org/wiki/Motorola_6809.
For the MCUs of this vintage all program memory and I/O was external to the chip. I don't think there was even an on-chip timer. There was a small amount of RAM on the chip and there were external IRQ and NMI inputs.
I am not sure about the 6809, but surprisingly the 6800 and the 6805 was backward compatible with source code (and I think maybe even machine code) for the 68HC11.
Regards,
Mac
Message Edited by bigmac on 05-13-200611:54 PM
Frightening to admit, but I still have my copy of the "Motorola Microprocessors Data Manual" from 1981, with data sheets for MC6800, 6801/03, 6802/08, 6805P2/P4/R2/T2/U2, 6809E, 68000 and their many various peripheral chips. BTW, the Radio Shack Color Computer was pretty much a minor modification to the MC6883 (DRAM controller chip) "sample application" schematic, using the 6847 for color video/graphics.
I had Microware OS-9 (hyphen, not slash like IBM OS/2) on my "CoCo" and later on single-board 6809 kit. Had the op system, C compiler, Pascal compiler and Basic compiler all on one 720k 3.5" floppy, leaving the second floppy for a "user disk"!!! OS-9 was a modular, multi-user, tightly-coded OS and was later migrated to OS-9/68K on the 68000/68020.
I always thought it unfortunate that IBM went with Intel/Microsoft instead of Motorola/Microware for the IBM PC. Imagine a huge campus in Des Moines...
Anyway, if you need further details from the 6809E datasheet, justsayso! If you need one or two of the actual chips, I still have a couple of those, too! (1 MHz and the 2 MHz 68B09E even!)
Man, I'm such a relic.....
Thank you guys. I did a google search but was´t able to find any information about the 6809 itself. I found something about the HC09 which i think it could be the name-code.
I downloaded the data summary of all the 8 bit processor and the 6809 doesn´t appear, which is strange. That´s why i think that´s the "informal" name and i am missing something.
Thanks again.
Regards
Here is another reference to 6809 information
http://koti.mbnet.fi/~atjs/mc6809/
I can only repeat that a Google search on "motorola 6809" provides many links that directly pertain to the subject.
Regards,
Mac
Hello,
Roger Schefer has some info about the 6809 and other useful links too.
Eckhard
Try MC6809
Regards