[Coco] Booting Nitros9 from the VCCemudisk.vhd on a Real CoCo III

[Walter]

Thanks

I put my  the poke to enable both the miniFLASH and FD controller in too!

Walter

-----Original Message-----
From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Robert Gault
Sent: Friday, 18 January 2019 10:33 AM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] Booting Nitros9 from the VCCemudisk.vhd on a Real CoCo III

Walter,

Here is an example. Just keep in mind that the DW-X0.vhd will not boot into NitrOS-9 from any DW4 
drive other than drive0.

Mount a .dsk floppy on DW4 dr0.
Mount YOUR DW4 VCCemudisk.vhd on DW4 dr1.
Save as AUTOEXEC.BAS on DW4 dr0
10 POKE &HD938,5:POKE &HD939,&HA0:POKE &HD93A,0
20 DRIVE #1:DOS
Now cold start your Coco and you should see the menu on the VCCemudisk.vhd .

For booting to NitrOS-9 to work given the above, you will need a new BOOT module that access DW4 
drive1 instead of drive0. Your OS9Boot file will need to have a /DD essentially the same as /X1 .

Robert

Walter wrote:
> Ok
>
> I have missed the point!
>
> With HDB-DOS offset set to zero.  The floppy in DW drive 0 can have the autoexec/bas and do those things, yes?
>
> How would I get the autoexec  to switch to another DW drive?
>
> Walter

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