Date   : Sat, 12 Jan 2008 18:51:39 +0000
From   : mike@... (Michael Howard)
Subject: Z80 CP/M Software Discs

Steven Bass wrote:
> In message <47888A1D.4040209@...>
>           Michael Howard <mike@...> wrote:
>
>   
>> Morning All,
>>
>> Just a quick question.
>>
>> Am I correct in believing that the set of 7 discs for the Z80
>> co-processor are simply 80 track DFS discs each containing a CP?M 'image'?
>>
>> Cheers,
>>
>>     
> Hi Michael
>
> Disc 1 is the only disc containing the CP/M OS and as such side 0 of 
> the disc is in 80 Track, single density DFS format.  The remaining six 
> contain many of the applicaion program files and they are double 
> sided, 80 track, single density Acorn CP/M format.
>   

Thanks for that Steven. It makes obvious sense when you think about it. 
Which I obviously didn't.

> The ABC 100 and 110 can also use double density formatted discs but to 
> my knowledge nobody has any copies.  The boot ROM on the Z80 board 
> fitted to these machines is different to that fitted on the Z80 second 
> Processor in order to be able to load CP/M from a Winchester drive, an 
> ADFS floppy as well as the standard single density Acorn CP/M format 
> discs.
>
> If anyone knows someone who has a copy of the ADFS type CP/M discs 
> there are a number of us who would like copies please.
>
>   
Now, excuse my ignorance again, but, the contents of the ADFS discs you 
are refering to are different or just the format?

-- 
Michael Howard         mike at dewberryfields dot co dot uk
Lancashire
England