[Coco] Drivewire and HDB-DOS

[Gustavo Ranaur Schoenaker]

Bill,

Thanks for the answer! So I would need to go through the hard path ...
ok. LOOK. GO NORTH. MOVE BOULDER. GO CAVE. DEBUG. SCORE :-)

BTW, where is the official repository of the HDB-DOS with DW patch? I found
some intersting stuff on toolshed repository (most ASM files are yours, so
that's why I'm asking), but where is the most recente source?

Any help with a (prefebly Mac but it can be PC) development environment for
the CoCo will help (assembly compiler, IDE, etc). The last time I
programmed 6809 assembly was in the EDITASM+. I still have the cartridge,
but I *think* things got better since 1988. :-)

Thanks for the help,




On Fri, Jun 27, 2014 at 6:14 PM, Bill Pierce via Coco <coco at maltedmedia.com>
wrote:

>
> Gustavo,
> Sending dw cmds through "PRINT #-2" will not work. RSDOS BASIC sets the
> baud rate for this cmd and the baud rate would be wrong for DW4.
>
> You would actually have to write a routine (BASIC probably wouldn't work),
> to write the specific dw4 cmd bytes to the dw routines in HDBDOS.These
> routines only exist in the DW and Becker versions of HDBDOS.
> Mounting the vhd images is not a complex operation, but adding it to RSDOS
> could probably get complex. I have experimented with the cmds in rsdos, but
> the real problem comes down to setting up buffer space for the cmd string
> and returning messages. Theoretically, you should be able to close the port
> after sending the cmd and not read the return message, but then on failure,
> you wouldn't know it failed until you tried to read the (supposidly)
> mounted drive.
>
> The entrance to the DW4 routines in HDBDOS are:
>
> $D93F fdb dwread
> $D941 fdb dwwrite
>
> These are address tables so you would use:
>
> JSR [$D93F]
> JSR [$D941]
>
> I'm pretty sure the only requirement is the byte to send be in the "A" reg
> But, you first have to open a port (0-13, 14 for MIDI) with an "open cmd"
> sequence of bytes and EACH following byte must be preceded by "$8x" (opcode
> FastWrite) in which x represents the port #. Then to read the response, you
> must use the read sequence. All this is explained in the dw4 spec in the
> dw4 wiki on SF.
> In NitrOS9, this is easy stuff.. but no-one has written anything to
> utilize these features for RSDOS (HDBDOS) that I know of. The only program
> I know of that uses the dw4 features from RSDOS is the re-written version
> of Lyra (MIDI sequencer) in which Robert Gault did the dw mods and I modded
> that to work with the becker port.
> I have thought of writing such a utility, but can't never seem to find
> time away from my OS9 projects to do so.
>
>
> Bill Pierce
> "Today is a good day... I woke up" - Ritchie Havens
>
>
> My Music from the Tandy/Radio Shack Color Computer 2 & 3
> https://sites.google.com/site/dabarnstudio/
> Co-Webmaster of The TRS-80 Color Computer Archive
> http://www.colorcomputerarchive.com/
> Co-Contributor, Co-Editor for CocoPedia
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>
>
>
>
> -----Original Message-----
> From: Gustavo Ranaur Schoenaker <ranaur at ranaur.net>
> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> Sent: Fri, Jun 27, 2014 3:18 pm
> Subject: [Coco] Drivewire and HDB-DOS
>
>
> Just checking  ... Is there any command in HDB-DOS to mount/unmount disks
> using drivewire?
>
> I know the is an OS-9 command (dw). But I don't want to use it yet. :)
>
> Even is there is no command, anyone (me included) could make a .BAS program
> do send the unmount/mount command through the serial port (PRINT #-2). Is
> just a matter to know the specification ... any help?
>
> Thanks,
>
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