Expansion board for the CD32

[plasmab]

Originally Posted by supaduper

Steve when you go live on Ytube please can you pre- inform us bud as the Notification is crap on YB, cheers man !

Best i could do is announce on twitter... otherwise i'm kinda spamming the threads with things that dont contribute to the discussion here.

[supaduper]

Originally Posted by plasmab

Best i could do is announce on twitter... otherwise i'm kinda spamming the threads with things that dont contribute to the discussion here.

Okey dokey bud fully understand...twitter it be

[mattymuc]

Originally Posted by plasmab

Cosmos was building one and sold some on ebay. Dont know if that worked.

Steve, are the brd files available anywhere? I would like to build one. Thanks!

[kgc210]

https://github.com/terriblefire/brea...ter/cd32/eagle

[mattymuc]

Thanks! The "not finished yet" had confused me

[plasmab]

Originally Posted by mattymuc

Thanks! The "not finished yet" had confused me

Cosmos has made changes and not published them.


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[supaduper]

@ Steve or Brian can you confirm its these two tracks to cut and bridge the 5v rail with diodes to take the voltage down on those 3v rams , cheers

[plasmab]

Would need to check the schematics.... but the hard disk should run off 4.6 and the regulator definitely will so anywhere on the main track might do


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[supaduper]

Originally Posted by plasmab

Would need to check the schematics.... but the hard disk should run off 4.6 and the regulator definitely will so anywhere on the main track might do


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So we could just use one diode Steve ? sorry for my naivety

by the way those 3v rams have been on solid for 3 days

[plasmab]

The hard disk is the only thing that gives me a pause here. But in theory yes. A mechanical hard disk might need to be tested. On the next revision I'll split the power rail so we can do this without the drop at the ide interface. The regulator is good down to almost 3.5V maybe better depending on the actual part used


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[supaduper]

Originally Posted by plasmab

The hard disk is the only thing that gives me a pause here. But in theory yes. A mechanical hard disk might need to be tested. On the next revision I'll split the power rail so we can do this without the drop at the ide interface. The regulator is good down to almost 3.5V maybe better depending on the actual part used


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No problem I have a 2.5" hard disk that I tested with tf328 so I can do that Steve

**Edit
When the diodes arrive I will do a bridge just after the volt reg 5v out rail and try the hard disk and report what i find

[plasmab]

Inevitably some cf cards will sulk at this approach but meh... it's a trade off between RAM @3.3v or getting a compatible card... too many permutations to test


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[supaduper]

Originally Posted by plasmab

Inevitably some cf cards will sulk at this approach but meh... it's a trade off between RAM @3.3v or getting a compatible card... too many permutations to test


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well I have loads of different types CF cards and can spend a little time testing to see if it will be a major problem, then people can make their own minds up .....or do we need to even bother Steve as these rams will not die lol

[kgc210]

Just had my 3 boards turn up from you, they are very pretty.
Just need to order some bits to build them now.

[plasmab]

Originally Posted by supaduper

well I have loads of different types CF cards and can spend a little time testing to see if it will be a major problem, then people can make their own minds up .....or do we need to even bother Steve as these rams will not die lol

How many hours now?


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[supaduper]

Originally Posted by plasmab

How many hours now?


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3 1/2 days Steve, I am leaving it permanently running on my spare CD32 24/7 with MPM on loop...it just never stops

[alenppc]

To be fair, running these old games will only tax (and potentially damage) the first 512K of RAM. I think leaving the ram test on that constantly accesses all the ram would be a more reliable indicator.

In the meantime, I am having a world of trouble ordering anything from UTSource and it's really hard communicating with them. How long do they usually take before they ship something to you? I've been waiting now close to a week with no progress.

[supaduper]

Originally Posted by alenppc

To be fair, running these old games will only tax (and potentially damage) the first 512K of RAM. I think leaving the ram test on that constantly accesses all the ram would be a more reliable indicator.

In the meantime, I am having a world of trouble ordering anything from UTSource and it's really hard communicating with them. How long do they usually take before they ship something to you? I've been waiting now close to a week with no progress.

Most of my orders have been from utsource and really aint had a problem but those ram you linked to last time have not even been shipped yet, but normally I have no problem, a weeks wait at most.

Originally Posted by alenppc

To be fair, running these old games will only tax (and potentially damage) the first 512K of RAM. I think leaving the ram test on that constantly accesses all the ram would be a more reliable indicator.

Which ram test do you suggest Alen ? one like Sys Test ?, and just leave reading and writing ? I can leave this spare Cd32 going forever..it will out live me

[alenppc]

Oh ok, I have been bugging them about that very same ram - I guess they must be waiting for stock then. The language barrier is really a problem, even though they try their best.

[alenppc]

Originally Posted by supaduper

Which ram test do you suggest Alen ? one like Sys Test ?, and just leave reading and writing ? I can leave this spare Cd32 going forever..it will out live me

Yeah, that's the only one I can think of - that constantly accesses, reads & writes to all the ram.