[Coco] ovcc update

Walter Zambotti zambotti at iinet.net.au
Sun Dec 2 21:18:57 EST 2018

Sent from my Xperia by Sony smartphone

---- Bill Pierce via Coco wrote ----

> Walter, just for kicks, I downloaded VCC 2.0.1b and played around a little with the SuperIDE.dll this morning. I got it to recognize the vhd image but it was blank so I got no further. Here's what I found...
> In fd502 config, make sure the "Clock at 0XFF50-51" IS checked. Then in IDE Config, set the "Base Address FFXX" to 70.
> Set the MPI Config to Slot 4 (fd502)
> ALSO... make sure your offset in HDBDOS is CORRECT!! The offset is based on the size of the OS9 partition BEFORE the rsdos partition. To get this, check your VHD file size, divide by 256 to get the sector count, then subtract 161,280 for the 256 rsdos disks (all in decimal). Convert this number to hex and that's your offset for hdbdos. Then and ONLY then will hdbdos recognize the LBA HD. If the offset is wrong, the LBA HD will not be found. This took me about an hour to realize LOL.
> This will make HDBDOS recognize any image in the master as LBA.
> I know I have a populated image in my Coco stuff at home but will not be there until the weekend. I will check when I get home (maybe tonight).
> The NitrOS9 drivers to use it are another ball of wax...
> Bill Pierce


This is close it now sees the drive but all the disks 0-255 return garbled results including  displaying file contents with dir 0-255.
But this is probably enough for me to test my ovcc version. If I see the same garbled results then it is probably working! 


> "Charlie stole the handle, and the train it won't stop going, no way to slow down!" - Ian Anderson - Jethro Tull
> My Music from the Tandy/Radio Shack Color Computer 2 & 3
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> -----Original Message-----
> From: Walter Zambotti <zambotti at iinet.net.au>
> To: 'CoCoList for Color Computer Enthusiasts' <coco at maltedmedia.com>
> Sent: Fri, Nov 30, 2018 3:58 am
> Subject: Re: [Coco] ovcc update
> In addition I have hex edited $1938 - $1940 of the HDBBLA.rom to be $5A0000 to match the OS9 partition offset of then empty.img.But still no go.I have also tried 2 different hdbbla's 1.3 & 1.1D 4-N-1Walter-----Original Message-----From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Walter ZambottiSent: Friday, 30 November 2018 1:51 PMTo: 'CoCoList for Color Computer Enthusiasts' <coco at maltedmedia.com>Subject: Re: [Coco] ovcc updateI took the empty.vhd from the archive and renamed it to empty.img.I inserted it into the IDE Master and hard reset, but it still doesn't find a LBA hard drive.I then entered:Drive onDskini 0?io error.So the empty vhd in the archive doesn't seem right!I read the HDBDos manual regarding the offset but this is for OS-9 partitions.At the moment I would be happy if it was working with floppies.Walter-----Original Message-----From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Bill Pierce via CocoSent: Friday, 30 November 2018 12:11 PMTo: coco at maltedmedia.comCc: Bill Pierce <ooogalapasooo at aol.com>Subject: Re: [Coco] ovcc updateYou need to make your own image. It uses the standard os9/rsdos partition scheme just like hdbdos for dw and rgbdos. You'll have to set the offsets as described in the hdbdos manual. You just make a standard vhd then rename it to ".img".Bill Pierce"Charlie stole the handle, and the train it won't stop going, no way to slow down!" - Ian Anderson - Jethro TullMy Music from the Tandy/Radio Shack Color Computer 2 & 3 https://sites.google.com/site/dabarnstudio/Co-Contributor, Co-Editor for CocoPediahttp://www.cocopedia.com/wiki/index.php/Main_PageE-Mail: ooogalapasooo at aol.com-----Original Message-----From: Walter Zambotti <zambotti at iinet.net.au>To: 'CoCoList for Color Computer Enthusiasts' <coco at maltedmedia.com>Sent: Thu, Nov 29, 2018 7:05 pmSubject: Re: [Coco] ovcc update>The SuperIDE emulation in VCC uses the hdbdos rom (for IDE) and for>NitrOS9 it >uses the RBSuper/LLIDE combo... the same as the real thing. >All the "usage" >procedures are the same as the SuperIDE and Glenside >IDE.>I had it working a few years ago, but with an older version of >VCC. Since no one >has been using it, it may be broken in the latest >version. If I get the time, I may >check it out sometime in the >future.>Bill PierceThanks BillWhat disk image does it require? I >wouldn't assume an Emu disk!Walter-- Coco mailing >listCoco at maltedmedia.comhttps://pairlist5.pair.net/mailman/listinfo/coc>o--Coco mailing listCoco at maltedmedia.comhttps://pairlist5.pair.net/mailman/listinfo/coco--Coco mailing listCoco at maltedmedia.comhttps://pairlist5.pair.net/mailman/listinfo/coco-- Coco mailing listCoco at maltedmedia.comhttps://pairlist5.pair.net/mailman/listinfo/coco
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