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Hi Roberto,
thanks for sharing ...
And it is always nice to read about sorchard and his beautiful 'old' projects!
cheers
pere

A good source for info about CoCo-SDC is
http://cocosdc.blogspot.com.es/
pere

OK, that seems ok if the DP50 sits on bank number 5 (4+1), I will assume that's right Here is the CoCo-SDC manual, you will read the kind of accepted cards ... I understand you didn't buy it from Ed Snider, in this case, maybe the seller could help telling us how he used the SDC board with his Drago...

YuT666 wrote:Ordinary SD cards won't fit, 'cause therey a too thick. And i have only one MMC.

According to the users manual (D. Atkinson), the SDC accepts SD/SDHC cards formatted with FAT16 or
FAT32 file system
pere

That screenshot shows that the DOSPlus5.0 extended receives 'bad' data to its requests to the SDC firmware (microcontroller) First of all, we must ensure that the CoCo-SDC is hardware configured to work with the Dragon. You should look at the 4 DIP-switches and verify they are ok. The one called DRG...

would you mind to upload that UPDATE.VDK file here (zipped)?
thanks
pere

YuT666 wrote:I really don't know whats wrong:
SDRIVE1,"UPDATE.VDK"
OK
SDRIVE
1: -- NO DISC --
2: -- NO DISC --

Neither do I
it seems there are problems reading that card.
If you enter
SDIR at that point , what does it show?
It shoud return the card contents ... (not the disk contents)
pere

by the way,
my SDC is formatted FAT32
regards
pere

Hi, let's go step by step. If the card inside the CoCo-SDC has a file in the root with the name "UPDATE.VDK" and you STARTUP.CFG file contains these lines: 0=UPDATE.VDK 1=OFF On startup, it should be mounted, so issuing this command SDRIVE and Intro should show 1:ON UPDATE.VDK nnnnn (the VDK length)...

Hi Roberto, I have never thought about that point. Version 0.25.04 is *one* year old and Ed Snider (aka Zipster) installs it for free in any CoCo-SDC he sells to Dragon users. No problems have ever arised. There are lots of users that use compiled collections (by Chris Poacher) on the Facebook group...