I am going to use an AMI S6802P (Motorola 6802 Clone) and make a computer around it.
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I have made a Pinterest to list all of the components I own. (I had a toolbox full). A lot of them have no datasheets and it would be really great to find out the info of everything. I still have to make edits and add the rest of the components and fix the info on the components I have datasheets for. Any help would be much appreciated.
- Jeff
I have been reading about the 6800 series microprocessor. So far I have learned a lot. I would like to learn more but lately been running out of time for my projects. I have a side project not posted that has took some of my time. The rest of my time has been going to my recent marriage. :)
This picture is from Amazon where I got the book even though this isn't what the book I got looks like. I will upload a picture of my book sometime later. :)
I need more stuff if I am going to use the MOS 6560 chip for video. The 6502 isn't far off from the 6800 series chips if what I am remembering is correct. I believe there was a whole court case from Motorola to MOS because they were selling the 6502 CPU that is compatible with 6800 series for $25 instead of Motorola's $100+ and Intel's $100+ CPU.
The 6502 is on the top left and the 6560 is on the middle right.
I am assuming I need the 3 Octal Bus Transmitter/Receivers at this time.
I am going to try and use the Commodore VIC-20 chip for video on the 6802 Build. Mostly because I have no other chip that can do what this can do.
My latest update is that I am making a new schematic on Eagle Cad. My only problem was I had to learn how to use Eagle Cad. I didn't find that being a problem for long as I watch a lot of Ben Heck YouTube shows. His show on Eagle Cad was right to the point.
Next step will be ordering a custom PCB after I finish with Eagle Cad.
In other news I found out from a lot of reading of datasheets that the 64k EPROM (27C64A) I have can work. That is also the max the 6802 can use. I will save the 32k for another day. Maybe on a Z80 build if this works out alright.
I am going to base my project around a schematic that I know works. This is from the site I mentioned.
If you haven't heard of http://quinndunki.com/blondihacks/ , its a good blog to help. I have learned a lot from this blog and though it does not use the 6800/6809, it can e of use. Look into the Veronica project.
Currently I have been reading "6800 Assembly Language Programming - 1978" and so far I have learned a lot but not as much as I would like. Edit: Just checked out the site. Looks like I have more stuff to read. :)
Hmm, I had to read that part number three times...yes "6802". You are correct not many 6802 projects out there (that I've seen). :-) I gather kind of like an embedable flavor of 6800 (with RC and built in RAM). Looks like a fun project.
I hope it is a fun project. :) I contacted Ben Heck in an email from his
site and he said it was an obscure chip. It was only one of 4 MCUs I
own that I could use. The other 4 are; NEC D7810HG (Z81 Clone), Philips
PCBC80C31BH (Intel 8501 Clone), Hitachi HD404729S (4-Bit Custom MCU),
and Sanyo LM6402G (4-Bit Custom MCU). The 6802 is a really cool chip that was
used in a lot of old pinball machines.
Jeffrey Paull
Steve Shaffer
Peter Wasilewski
Marius Taciuc
jens.andree
How is your project going? I'm looking for some open source schematics for a 6800 system to use for a historical perspective for my embedded systems class. I cut my teeth with the 6800 30 years ago if you need help with anything.