A DOSPlus Extender for Drivewire & CoCo-SDC

A place to discuss everything Dragon related that doesn't fall into the other categories.
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YuT666
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Joined: Thu Jun 16, 2016 4:13 pm
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Re: A DOSPlus Extender for Drivewire & CoCo-SDC

Post by YuT666 »

Thanks Pere, i really appreciate your help, but i stuck with every single command. I know a lot about my other comps, but i'm new to Tandy & Dragon.

So i copied a STARTUP.CFG with the lines:
0=UPDATE.VDK
1=OFF
to an empty MMC card. I copied the "DW42 v0.25.05 SDC-Updater.VDK" to that MMC too and renamed it to "UPDATE.VDK".

After this i typed:
SDRIVE1,"UPDATE.VDK"
and it shows an RF Error.

I typed:
DIR1
and i received an RF Error.
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pser1
Posts: 1655
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Location: Barcelona (SPAIN)

Re: A DOSPlus Extender for Drivewire & CoCo-SDC

Post by pser1 »

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)
2:--NO DISC--
Let's see if you get the same result ...
pere
YuT666
Posts: 12
Joined: Thu Jun 16, 2016 4:13 pm
Contact:

Re: A DOSPlus Extender for Drivewire & CoCo-SDC

Post by YuT666 »

I really don't know whats wrong:

SDRIVE1,"UPDATE.VDK"
OK

SDRIVE

1: -- NO DISC --
2: -- NO DISC --
Last edited by YuT666 on Wed Mar 08, 2017 4:14 pm, edited 1 time in total.
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pser1
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Re: A DOSPlus Extender for Drivewire & CoCo-SDC

Post by pser1 »

by the way,
my SDC is formatted FAT32
regards
pere
YuT666
Posts: 12
Joined: Thu Jun 16, 2016 4:13 pm
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Re: A DOSPlus Extender for Drivewire & CoCo-SDC

Post by YuT666 »

Yes, mine too ...
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pser1
Posts: 1655
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Re: A DOSPlus Extender for Drivewire & CoCo-SDC

Post by pser1 »

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
pser1
Posts: 1655
Joined: Sun Mar 25, 2012 7:32 pm
Location: Barcelona (SPAIN)

Re: A DOSPlus Extender for Drivewire & CoCo-SDC

Post by pser1 »

would you mind to upload that UPDATE.VDK file here (zipped)?
thanks
pere
YuT666
Posts: 12
Joined: Thu Jun 16, 2016 4:13 pm
Contact:

Re: A DOSPlus Extender for Drivewire & CoCo-SDC

Post by YuT666 »

I get something like this ... always a different pattern every time i type SDIR.
DSCN3409.JPG
DSCN3409.JPG (100.81 KiB) Viewed 7335 times
Well, i can't use an other card, 'cause i've seen, that the CoCoSDC only uses MMC SD cards. Ordinary SD cards won't fit, 'cause therey a too thick. And i have only one MMC.
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pser1
Posts: 1655
Joined: Sun Mar 25, 2012 7:32 pm
Location: Barcelona (SPAIN)

Re: A DOSPlus Extender for Drivewire & CoCo-SDC

Post by pser1 »

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 DRGN should be ON
and the other three should be selecting the default bank number
If you have DP50 in bank 1, switches 2 and 4 should be OFF and just 1
had to be ON
Internally there are three pins labelled
DRQ - central - AUTO
For the Dragon there *must* be a jumper between DRQ and the central PIN
But this must *not* be there for the CoCo!!
pere
pser1
Posts: 1655
Joined: Sun Mar 25, 2012 7:32 pm
Location: Barcelona (SPAIN)

Re: A DOSPlus Extender for Drivewire & CoCo-SDC

Post by pser1 »

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
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