[Coco] Another Coco Virtual Disk Util

[Wayne Campbell]

I also am a self-taught hobby programmer. You have done very well so far
from what I see. Thank you for giving it a shot and creating a great file
manipulation utility. It was needed.

Wayne
 On Oct 19, 2013 4:31 PM, "Walt Zydhek" <walt at wzydhek.com> wrote:

> I have changed the logic to show the RGBDOS partitions numbered 0-255. And
> the "Go To RGBDOS Drive" now uses drives 0-255. I am still supporting VHD
> images that have no OS9 beginning partition and have RBGDOS partitions
> starting at offset $000000. But all RGBDOS partitions will be numbered
> beginning with 0. I am trying to make this utility as flexible as possible
> taking into consideration that some people may have non-standard setups.
>
> I haven't incorporated a method to CREATE partitioned VHDs yet. That is on
> my to-do list.
>
> Thanks everyone for your compliments on this utility.. I just took an idea
> that I didn't like the utilities that already existed for managing virtual
> disks, and went from there.. The project has really pushed me beyond my
> previous experience with programming. Programming is a hobby for me. I have
> no formal education in programming, I am completely self-taught. I am happy
> to have reached the level in this project that I have. I was really hoping
> to have someone join me on this project to help improve the code and
> resolve
> issues I hadn't thought of or hadn't been able to resolve myself. But to
> date, I have done all the coding myself (except for one slight improvement
> to the sector editor provided by one person on this list, thanks Greg
> Law!).
> All I can do at this point is attempt to incorporate new suggestions or
> resolve bugs as they are reported. Thanks again everyone!
>
> -Walt Zydhek
>
> -----Original Message-----
> From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com]
> On
> Behalf Of Robert Gault
> Sent: Saturday, October 19, 2013 12:32 PM
> To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] Another Coco Virtual Disk Util
>
> Walt,
>
> There are a few more problems with EmuDisk.
>
> With a .vhd disk, the Disk Basic drives are numbered 0-255 not 1-256 as in
> your program.
> There does not seem to be any provision in your program (at least I can't
> figure it out) for creating a standard .vhd image which has the initial
> $5A000 sectors formatted for OS-9 and the remaining 256 drives of
> 18-sector,
> 35-track for Disk Basic. It doesn't seem possible to make a disk that
> large.
>
> Much of this would normally be taken care of by the emulator ROMs (RGBDSO)
> which defaults to a $5A000 sectors offset before the Basic disk commands
> access the .vhd drive. HDBDOS for Drivewire has been causing problems as
> the
> offset is $000000. You can't create hybrid disks unless you POKE memory
> with
> the required offset value or tell Drivewire to use an offset.
>
> Still, your program is looking very good and will be very useful.
>
> Robert
>
> PS. The source of the bad DD.FMT values seems to be the NitrOS-9 format
> command.
> The current version is using $03 even when it claims to be formatting a
> hard
> drive when it should be $82.
>
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