[Coco] Swapping hard drives with SuperIDE

[Mark Marlette]

Diego,

Page 39 of the HDB-DOS manual indicates Hi byte($d938) Lo word($d939).

Key terms are byte and word. Byte being 8 bits wide and word being 16  
bits wide.

$d938=01
$d939=df
$d93a=$76

Mark
Cloud-9

Quoting Diego Barizo <diegoba at adinet.com.uy>:

> I'm trying with the offset poking method.
> The calculated value is $01df76
> That means that I have to poke 01 to d938, df to d939 and 76 to d93a ?
> The manuals only indicate d938 and d939 as where the offset value is
> stored (hi and low bytes)...
>
> Diego
>
>
>
> Mark Marlette wrote:
>> Diego,
>>
>> Correct.
>>
>> Allan suggested one method, another is to use a different FLASH   
>> bank in the SuperIDE or you can just poke the offset. $d938-3a.
>>
>> BTW: Since a full 256 drive HDB-DOS partition uses ~80MB a 256MB CF  
>>  will yield A LOT of NitrOS-9 space. I make all mine the same that   
>> way you don't have to worry about changing offsets.
>>
>> Mark
>> Cloud-9
>>
>> At 5/5/2008 09:03 PM, you wrote:
>>
>>> My original plan was to use 2 had drives (actually CF cards), 1   
>>> for HDB-DOS, the other for NitrOS-9, and swap them as needed.
>>> Today I was going trough the steps to setup a floppy-less NitrOS-9  
>>>  installation, and some issues came to my mind.
>>> In order to boot from the CF, I will need a HDB-DOS partition of   
>>> at least 1 disk size, to contain the actual boot disk. This   
>>> partition will reside after the NOS-9 one, and HDB-DOS will use an  
>>>  offset to avoid writing over the NOS-9 partition.
>>> But that means that I can not just swap that CF card for another   
>>> one with a different configuration, since the HDB-DOS partitions   
>>> will start in different positions... Right?
>>> I guess that the right thing would be to use one of the flash   
>>> banks in the SuperIDE for each CF card?
>>> Is there any other way to have a floppy-less system, besides a   
>>> custom NitrOS-9 ROM?
>>>
>>> Diego
>>>
>>>
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