Honored ContributorOk, trying to repair an old ISA board that has an EP330PC-15 on it. I'd appreciate any information about this device.Yes, kinda old( 20 years) but this is alegacy device that must be maintained.
Altera website came up empty.. Thanks Jay
Honored ContributorYou didn't yet tell about the exact nature of the intended maintenance respectively upgrade.
- replacement of defective parts - rebuild the original board - redesign the board with a functional equivalent logic device Do you have a binary (*.jed are whatsover) programming file, or are you able to readout the original programming, knowing that the security bit isn't set? Or do you have A+PLUS project files? Without some of this data, even original EP330 devices won't help much.Honored ContributorThe quest is to replace the 'end-of-life' EP330s with new chips.It should simply involve desoldering the existing chips and replacing them with new ones(or equals) that have the same 'program' in them.
IF I had the pinout of the EP330 at least I'd KNOW which are inputs and outputs...it'd be a start. Since it's a 20 year old chip it can't be that complicated! I've thought about using a simple breadboard to toggle inputs and observe the outputs...once I have the pinout... I do know that pin 2..9 are tied low,pin 1 has a 12MHz clock to it, and 11,13..16 go 'somewhere'..at least there's scope 'action'. I do not have ANY information aside from what I've decoded in a quick rev-eng session to see what it's connected to.Can't 'read' it if security has been set so my 'breadboard' test should give me what I need to know...once I know the pinout.. I'm beginning to figure out I should NOT have tossed out an entire wall of databooks a couple of years ago. I know I had Atera books....sigh.. It's looking like I have to rev-eng the EP330 which should take less than a month or two if all goes well.I could speed that up by 1/2 if I had the pinout.Sure hate to lose the contract as originally I'd thought maybe 1 month to do the whole job.Great coins to time ratio.....Honored ContributorAs far as I remember, EP330 has basically the same pin structure as EP320 (and also the popular 20 pin GAL/PALCE devices, as I already mentioned). That means, pin 12 to 19 are optional bidirectional pins. Pin 1 is a dedicated clock 2 to 9 and 11 are inputs.
There's a fair chance that PALCE16V8, that is still available, can be used as a pin compatible replacement.Honored Contributorthanks for the info. I downloaded the 320 info, maybe the 330 is a 'windowless' equal to the 320 ?
Jay
