[Coco] Preliminary Support for SDC in HDBDOS

[Brett Gordon]

I think there's some hardware (like old FDC's ) whose ROM is
physically limited to 8k roms... (maybe 24 compared to 28 pins, or
something like that.)  Maybe a HW guru can pipe in here.

On Tue, Nov 25, 2014 at 9:11 AM, Kip Koon <computerdoc at sc.rr.com> wrote:
> Hi Brett,
> Maybe there could be an 8K and 16K versions.  I for one have no problems whatsoever have a 16K HDBDOS rom image running on my system.  The extra space would enable it to have all the drivers and features in one giant image, would it not?
>
> Kip Koon
> computerdoc at sc.rr.com
> http://www.cocopedia.com/wiki/index.php/Kip_Koon
>
>
> -----Original Message-----
> From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Brett Gordon
> Sent: Monday, November 24, 2014 12:33 PM
> To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] Preliminary Support for SDC in HDBDOS
>
> Right now, it assumes a max sized partition, 256 disk.  I have to add one more method to flesh out the HDB Driver.  I would like some people to test the ROM out before plopping it by default onto the SDC image.
> If  you try it let me know how it turns out.
>
> I don't think I can fit all the fancy stuff, like Darren's SDCDOS into 8K.  And I'm pretty sure Boisy and Mark expressed concerns about HDB spreading out into a 16k image. So the fancy stuff my have to stay on a utility disk.
>
> On Mon, Nov 24, 2014 at 12:02 PM, Zippster <zippster278 at gmail.com> wrote:
>> That sounds great.  When you get it finalized I can include it in one
>> of the selectable ROM banks as an optional DOS (for future shipments
>> of SDC’s), since there are 6 banks open.
>>
>> - Ed
>>
>>
>>> On Nov 24, 2014, at 8:09 AM, Brett Gordon <beretta42 at gmail.com> wrote:
>>>
>>> This weekend I was able to hack in some preliminary support for
>>> CoCoSDC into HDBDOS.   This will allow you to treat a SDC mounted hard
>>> drive image in the same manner as the other devices (IDE,SCSI,DW,
>>> etc...)
>>>
>>> I have replaced the only the low-level DSKCON drivers, so HDB can
>>> access the two logical drives. However, HDBDOS cannot do all the
>>> fancy stuff (yet) - mount disk images, list the SD directory.  In
>>> other words, you will probably have to have a config.ini on your SD
>>> card to make SDC auto-mount images.
>>>
>>> I have shared three files here:   http://sites.google.com/site/cocoboot2/down
>>>
>>> hdbsdccc3.dsk :  cocoboot disk that autoloads the new HDB (coco3)
>>> hdbsdccc2.dsk:   save as above for the CoCo2
>>> hdbsdc.rom:        a new ROM image (set for partition offset 0x000000 )
>>>
>>> There's two ways to try it:
>>>
>>> 1. Burn (flash) the ROM to your device, and boot.  The same directory
>>> has a SDC flashing utility.
>>>
>>> 2. Use the above cocoboot disk to use HDBSDC in RAM.  If the cocoboot
>>> disk fail to boot properly, its probably because you have an MPI, or
>>> a strange configuration.. no worries: CoCoBoot contains a menu-driven
>>> setup program to help you tailor the boot to different setups. (Yes,
>>> it can change your HDB partition offset)
>>>
>>> This is all experimental (but tested).  Shortly, I'll ask for a code
>>> review of my changes to HDBDOS, and maybe they will get pushed to the
>>> repo.
>>>
>>> If you need any help, email me.
>>>
>>> --
>>> Brett M. Gordon,
>>> beretta42 at gmail.com
>>>
>>> --
>>> Coco mailing list
>>> Coco at maltedmedia.com
>>> https://pairlist5.pair.net/mailman/listinfo/coco
>>
>>
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>
>
>
> --
> Brett M. Gordon,
> beretta42 at gmail.com
>
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-- 
Brett M. Gordon,
beretta42 at gmail.com