CD Stupid Card 4.0

[Bonknuts]

I have my card. Haven't had a chance to try it out yet though.

[Lost Monkey]

Received my card today.  The envelope was awesome!   I will post a picture later.

Tested and working, Thanks again!

[aurbina]

Just got mine!

Works perfectly on all my systems (Supergrafx, CP Engine, Duo and TG-16). Thanks a lot for your great work.

[td741]

Got my card and artful envelope late last week. Haven't had a chance to test it out yet...

[Bonknuts]

I was trying out the card today, and it's too thin to work on my system (too loose). What can I use to put underneath it get a better fit?

[nodtveidt]

Maybe a small piece of oak tag might give it enough thickness?

[blueraven]

Are any of these still available?.. Or did I miss the boat...

[TailChao]

I was trying out the card today, and it's too thin to work on my system (too loose). What can I use to put underneath it get a better fit?

Ah, my apologies. I guess the card slots have some variation in them.
Anyway, the proper solution is to thicken the layer of hot melt on the bottom of the card. You can use the glue gun's heated nozzle to create a nice angled edge.
A quick workaround is just to fold a piece of paper and insert it in the slot underneath the card. It's easier if you put the paper in first or use sturdy cardstock.

Worst case I can mail you another card.

Are any of these still available?.. Or did I miss the boat...

There were several boats and they've all set sail. However, I am still holding a couple extra cards in case anyone who bought one previously runs into defects. If none of those are required, I'll PM you.

[blueraven]

Are any of these still available?.. Or did I miss the boat...

There were several boats and they've all set sail. However, I am still holding a couple extra cards in case anyone who bought one previously runs into defects. If none of those are required, I'll PM you.

I'm definitely interested, thank you.

[TailChao]

Whoops, I forgot to distribute the final version of the CD System DERP 4.0 which was included on everyone's cards.
(By which I mean the the flash somehow arranged itself to resemble this pattern of bits. I had nothing to do with it).

The first post has been updated appropriately, the only difference from the previously available patch was the addition of the predelay in order to work around the TurboGrafx's slow RESETn rise time.

[TailChao]

Alright, after the inconvenient discovery in this topic. I've prepped two new patched system cards and updated the first post appropriately.

To summarize - it is possible to enable the internal Super CD RAM in a Duo or SuperCD while a HuCard is inserted. This causes a bus fight, and the internal Super CD RAM will usually win. While this is usually not a huge issue for the Turbo Everdrive or Stupid Card when they're running a normal Super CD game, if the Stupid Card switches into linear mode its RAM contents may differ with the Super CD RAM.

Either way, two devices driving the bus simultaneously is not cool.

I'd like to wait a few weeks to ensure there are no other things which need to be altered. But suggest everyone update if you have a chip programmer handy. Once we've locked down any other changes needed (hopefully none), I'll mail a free replacement flash chip to anyone who doesn't have a chip programmer.

[thesteve]

as a side note, placing resistors in the data bus can prevent issues caused by a bus fight while determining the winner

[TailChao]

as a side note, placing resistors in the data bus can prevent issues caused by a bus fight while determining the winner

Yes, but this also distorts the signal. In the case of the TurboGrafx, the bus is already a mess.
The proper solution is to remove the bus fight entirely.

[thesteve]

i wouldnt say distorts so much as reduces bandwith and eliminates echo
case in point i was recently working on a CDR2 drive and added a resistor in line with the eye pattern signal (digital)
the result was a signal that looked nice on the scope, while no functional difference was found (it got rid of all the ringing in the signal)

[TailChao]

i wouldnt say distorts so much as reduces bandwith and eliminates echo

That's a better way to put it, yes.