[Coco] hybrid CoCo-CP/M disk

[William Astle]

Robert Gault wrote:

> Willard Goosey wrote:

>> <snip>

>> There is some wasted space, as group 0x4a starts on track 17, sector

>> 17, and continues for six sectors into track 18, but that's not my

>> fault, 8 sector groups just don't come out even on 18 sector/track

>> disks.

>> <snip>

>>

>> Willard

> 

> Not sure what you mean in the above by "group 0x4a". If that's gran $4a, 

> it would be at track 38 sector 1. Whichever gran value it is (assuming 

> it is a gran value) there are 9 sectors per gran and two grans per track 

> on a Coco disk. Track 17, the Coco directory track, is not included in 

> the gran numbering nor does it appear in the allocation table, T17S2.

> 


He was referring to the CP/M disk format, not the CoCo disk format.

-- 
William Astle
finger lost at l-w.ca for further information

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