• Please review our updated Terms and Rules here
  • From now on we will require that a prefix is set for any items in the sales area. We have created regions and locations for this. We also require that you select a delivery option before posting your listing. This will hopefully help us streamline the things that get listed for sales here and help local people better advertise their items, especially for local only sales. New sales rules are also coming, so stay tuned.

California SFBA - need to borrow or buy an ICE for 6800 Atari pinball board

Covers: California
D

dluck

Experienced Member
Joined
Feb 9, 2015
Messages
116
Location
Campbell, CA
Hi,
I have a project to bring up a prototype Atari pinball board that uses a 6800. Using a Saleae logic 16 I've been able to see it come out of reset and then clear a bunch of ram but then seems to get lost after I believe it is jsr to a routine. Thanks to Al, who dumped the proms and provided me a disassembly I can see that. But using the saleae logic 16 its difficult to turn it into something that will group bits into bytes and capture only on a clk pulse. Or maybe I'm not finding out how to do that. I'm suspecting reading writing ram is a problem.
Anyone here in SFBA can loan me a 9010A with 6800 pod, or maybe something else I can plug in. Fortunately the 6800 is socketed.
Thanks all,
Dale
 
Maybe you can find someone in your area with an HP/Agilent logic analyzer that you can borrow. There is an 6800 Inverse Assembler than can run on an HP/Agilent logic analyzer that can be set up to work with a simple DIP test clip connection to 6800 CPU. The CPU address, data, and control signals are clocked into the analyzer synchronously with the CPU clock and the Inverse Assembler can decode the state capture trace into the instruction opcode execution stream.

Too bad we're not local to each other. I could loan you an HP/Agilent logic analyzer for this purpose.
 
I forgot I had an HP 1630D. It's working well. Just can't power it off cause I can't save my configuration. But at least I can take a photo of the screen in case of accidental power off. Board is up and running now. Had to replace one of the decoder chips as well as the 6800.
 
You must log in or register to reply here.
Back
Top