Expansion board for the CD32

[RiotRetroGaming]

Ok thanks guys,
I'm sure there will be a lot more of the same question cropping up.

Much appreciated!

[AJCopland]

I ordered mine from Vesalia
http://www.vesalia.de/d_cd32exp.htm

Apprently they only have 1 left!

[RiotRetroGaming]

Originally Posted by AJCopland

I ordered mine from Vesalia
http://www.vesalia.de/d_cd32exp.htm

Apprently they only have 1 left!

Thanks AJ, I'm liking the look of the Edu version.
I've just bought one from him, looking forward to joining the gang! Excited muchly

This has been looooooong awaited!

[supaduper]

Just for information I mixed and matched the ISSI and the Samsung ram onto a board and I can report that they happily together.........all together....Aaaaaahhh

[kipper2k]

k, i am going to add a bit of fuel to the hynix ram debate, the hynix ram i have which i programmed with the original 8mb ram file works fine with no CF in, Alfred chicken boots from CD fine

[Amiga1992]

Are they different model of Hinyx RAM? If not, and is the same model Stephen posted about and the one I have, HNY5118160B TC-60, as per spec-sheet, it is absolutely impossible for them to work. Sure, it might appear to you that they work, like it did to me at first, but they don't.

Also about that particular game, it doesn't have to just boot, it has to play through fine. Did you play it? you need to do more in-depth tests. Did you see the video I posted before? You can see Alfred Chicken bombing out after you start the game only:
[ Show youtube player ]
Skip to 25m41s

I realize you insist because of this:

Originally Posted by kipper2k

i tried turrican and some other CDs and they boot fine with old. i'll try new. (its a good job too as i bought 100 of them lol

but I hope you don't put out there any units built with this RAM. They will work as 2MB RAM with the JED Stephen posted before though, or wait for a revision 2 that supports those chips.

If you have a different part number though, share it!

[kipper2k]

Originally Posted by Akira

Are they different model of Hinyx RAM? If not, and is the same model Stephen posted about and the one I have, HNY5118160B TC-60, as per spec-sheet, it is absolutely impossible for them to work. Sure, it might appear to you that they work, like it did to me at first, but they don't.

Also about that particular game, it doesn't have to just boot, it has to play through fine. Did you play it? you need to do more in-depth tests. Did you see the video I posted before? You can see Alfred Chicken bombing out after you start the game only:
[ Show youtube player ]
Skip to 25m41s

I realize you insist because of this:

but I hope you don't put out there any units built with this RAM.

If you have a different part number though, share it!

It works, on 2 different machines, plays the game, boots from cd with no CF, boots from CF with no CD, passes ram check, nothing wrong with it so i dont understand the issue unless there is bad/fake ram out there. Does your ram work with the original 8mb RAM file ?

[Amiga1992]

Originally Posted by kipper2k

i dont understand the issue

Explained here before:

Originally Posted by plasmab

GUYS...
FIGURED IT OUT!!!

4K REFRESH CHIPS WILL NOT WORK WITH THE TF328!!!!

The reason for this is that A10 and A11 are not wired up so the ram is incorrectly addressed on a non-square chip.
http://pdf.icpdf.com/PdfOld/icpdf_da..._datasheet.pdf

vs

http://www.mouser.com/ds/2/198/41C-LV16105C-258561.pdf
http://www.bdtic.com/DataSheet/SAMSU...K4E151612C.pdf

Originally Posted by plasmab

Yes the HY5118160B-TC60 is a 4K refresh chip. Rectangular CAS / RAS. It wont work with the TF328 without routing more pins from the mux cpld which i can do in a rev2 and have 1K/4K firmwares.

As Stephen told to me:

Originally Posted by plasmab

@Akira regardless of what you "feel" is wrong with the TF328 the simple fact is that we are operating the Hynix RAM outside of what the data sheet says will work. So results will be unreliable. Which is what we are seeing.

[alenppc]

My understanding is that these chips exist in both 4K and 1K versions and are labelled the same. Am I wrong?

[kipper2k]

Originally Posted by Akira

Explained here before:

this issue is not a global issue, does your hynix flash with the original ram file ??. there is obviously some differences unknown to us

[alenppc]

Ah scratch that. There is an "8" instead of a "6". So Kipper, your chips are 1K that's why they work. See the datasheet:

HY5118160B 1K
HY5116160B 4K

Notice the "8" instead of the "6".

[kipper2k]

Originally Posted by alenppc

Ah scratch that. There is an "8" instead of a "6". So Kipper, your chips are 1K that's why they work. See the datasheet:

HY5118160B 1K
HY5116160B 4K

Notice the "8" instead of the "6".

ahah!, so there is a difference

[Amiga1992]

Originally Posted by alenppc

Ah scratch that. There is an "8" instead of a "6". So Kipper, your chips are 1K that's why they work. See the datasheet:

HY5118160B 1K
HY5116160B 4K

Notice the "8" instead of the "6".

Wait, really?
I have the exact same chips. It's 5118 not 5116. But the board doesn't work with IDE unplugged.
There isn't a difference in what I have. But then what does not apply is Stephen's theory.

I posted a video of what my board is doing, can't you post one of your tests?

Originally Posted by kipper2k

does your hynix flash with the original ram file ??.

Ask supaduper, he built the board. Also what is the "original" file?

[kipper2k]

Originally Posted by Akira

Wait, really?
I have the exact same chips. It's 5118 not 5116. But the board doesn't work with IDE unplugged.

I posted a video of what my board is doing


Ask supaduper, he built the board. Also what is the "original" file?

The first ram file posted on Github

[alenppc]

Originally Posted by Akira

Wait, really?
I have the exact same chips. It's 5118 not 5116. But the board doesn't work with IDE unplugged.

It could be something else then. Tonight I will check how the Alliance chips behave.

[kipper2k]

yah,

i do not want to be drawn into a debate on tis issue, i am just reporting the findings of my ram. (i did not buy it from UTsource, i bought from my chinese vendor

[Amiga1992]

Stedy was here yesterday but didn't post. A shame, would have been good to get his input.
But now that we know that the chips kipper and I have are 1K, it changes everything.

Supaduper, what firmware is my TF328 running?
(Is there any way for me to tell? Man, I should get that Xilinx programmer quickly).

Originally Posted by kipper2k

i do not want to be drawn into a debate on tis issue

And what is wrong with debating this? Determining if the problem I have is general or particular is important.
FW version COULD be an issue. I am glad Alen had eagle's eye and spotted that our chips are 1K. We can discard that!!
I still think you aren't testing thoroughly enough, though. That's why I made a live stream showing what I was doing, what I was testing, and the results.

A debate about boards using this RAM has only brought forward progress in my opinion! We figured out the 4K/1K problem, and that these Hinyx chips are 1K. We also found at least one board with a weird issue (mine) that remains to be seen what causes it.

[alenppc]

My totally uneducated opinion is that there is something else going on, I don't think the 4K ram chips would magically work with something as random as connecting an IDE device. Logically it would seem that there is some sort of electrical capacitance/interference at play. Once again, I could be 100% wrong.

Akira, can you reproduce this issue 100% of the time? Does it happen if you simply take out the CF card from the adapter, but leave the adapter plugged in?

[Amiga1992]

Originally Posted by alenppc

Akira, can you reproduce this issue 100% of the time? Does it happen if you simply take out the CF card from the adapter, but leave the adapter plugged in?

Yes, 100%!
And yes, it happens in both cases, I tried both.

Just to be thorough, a closeup of my chips, showing they are the 1K variant:



They are the exact same part as kipper's mask and all.

You know, maybe I should send you the card, Alen. See what you find!
Or maybe Stephen wants it. Dunno. Willing to help as much as I can.

[plasmab]

Very odd. I have those chips and they dont work for me either.