Test Board

[rgjones]

Originally Posted by Reactive

I here you there. Just stupid if you ask me, but then again I think everything is just going BGA so why produce a legacy item if it's not going to be used? I bet everyone else is cheering them for going BGA. ;-)

Did a little more research and there is a reason it's called CellularRam ...the real market for this stuff is Cell phones and not much else.

Just an idea of course. If there's the available I/O then I say we try to offer the Bank support too as an option.

My understanding with both the slinky and the RWIII is that banking is handled with a 8 bit register.

Concerning the Slink addressing: D0..D7, R/W, DevSel, A0, A1, PH0, RES

Just A0 and A1? Nothing larger?

Slinky uses a 4 i/o addresses - 3 bytes are address (only 20 bits are used for a total of 1MB) and 1 byte for data.

Reset too? I don't I've seen that used on a Memory card before, or maybe I'm thinking of something else?

Put the card in a known state at power on

[Reactive]

Hey Guys.

Any headway in the SDRAM project? When I spoke to Grant he hasn't really done anything since he's busy at work on some other CPLD project.

So Glenn... anything?

I was going to post an RFQ on GetAFreelancer.com and see how many people would take the project for $250. Do you have a testing platform already setup? If so I could email code for testing as it comes in. I'd be more then willing to share code in lieu of some help testing it.

Of course if you're already working on something and don't think it's too far off before we have something to test with then I'll hold off a while longer. As I said before I'd much rather give you the cash then someone else.

[rgjones]

Originally Posted by Reactive

Hey Guys.

Any headway in the SDRAM project? When I spoke to Grant he hasn't really done anything since he's busy at work on some other CPLD project.

So Glenn... anything?

No.... After i mounted the SDRAM chip ... I decided to go back and finish off the SRAM interface for the IIcmxp as I left it 80% wired up before I got derailed with pumping out uthernets and our discussion on SDRAM. Now that it's complete I seem to be struggling a bit to get it working properly. The simulation works ok but I can't get the SRAM address lines to drive using the actual hardware. Probably goofed on the wiring somewhere.

I would like to see that going sucessfully before I do any work on the sdram interface.

I was going to post an RFQ on GetAFreelancer.com and see how many people would take the project for $250. Do you have a testing platform already setup? If so I could email code for testing as it comes in. I'd be more then willing to share code in lieu of some help testing it.

I may be able to start wiring that up next week. I will at least get the power and jtag going ... we will need to get a feel for pin placement before I can start to actually wire anything beyond that up.

Of course if you're already working on something and don't think it's too far off before we have something to test with then I'll hold off a while longer. As I said before I'd much rather give you the cash then someone else.

Go for it an lets see if you get any action

[Reactive]

Hey Guys.

Quick note about 100 Pin QFPs - ALWAYS clean them after soldering! I had some odd issues that I just couldn't find. Seems some Brakleen (Pep Boys degreasor) and a toothbrush did the trick. I wash the PCB and CPLD and then brush each side of the CPLD pins twice. Then some compressed air to finish the job. The Brakleen evaporates and leave zero residue.

So make a note and add this procedure to all 100 QFPs you solder.