On Aug 14, 1:20*am, tom wrote:
On 8/13/2010 8:07 PM, K1TTT wrote:



Favorite assy was 6809. *Did a lot on the Ericsson MD110 while writing
patches.

tom
K0TAR

yeah, pdp8 was 12 bit, everything in octal instead of hex. *i did a
lot of 6809 stuff on a ratshack coco machine, amazing what you could
make that box do once you got inside it. *had one doing fax, rtty, 4
channel music synthesizer, and running a dialup bulletin board even
before aol started sending out floppies. *and i built an 8080 based
desktop computer from scratch in 1977, all of 2k of ram and a hex
keypad to load the programs from manually or from cassette tapes!

I ran OS/9 on my CoCo. *I had dual 5 1/4 inch drives, woohoo! *Also got
a couple things published in Hot CoCo if you remember that mag.

OS/9 was great. *Developed by Motorola as a micro based Unix type O/S.
I heard it was parallel developed with the 6809 chip with feedback
between the 2 teams. *It was very fast and very small. *Kicked the IBM
PC's butt with one fifth the clock speed. *As you may know, the 6809 was
about as much 16 bit as it was 8, which was probably part of the reason why.

And I still have all of the bits. *Haven't fired them up in maybe 15
years. *I wonder if the disks will still read.

tom
K0TAR

oh yes, i remember hot coco... at one point i had 4 floppies and extra
ram extension on my coco. that was when i was using it as a bbs.
finally turned it into a repeater controller in the mid 80's.