3 Jun
2007
3 Jun
'07
3:38 a.m.
At 05:28 PM 5/15/2007, you wrote:
On Tue, 15 May 2007, Grant Stockly wrote:
I found that I have to cover the hole or I get BDOS erros about missing
sectors. I figured it wouldn't look for the hole...
A freshly formatted disk gives me this:
A>STAT B:
BYTES REMAINING ON B: 69K
A>
69k for a 1.4MB disk! I was ripped off! : ( It is running CP/M 1.4. I
have the sources if anyone is interested.
This is what it says when it boots up:
TARBELL 24K CPM V1.4 OF 7-20-79
2SIO MINIFLOPPY VERSION.
HOW MANY DISKS? 2
A>
Were single sided single density 5.25" disks ~70k? The 3.5" drive does
sound different than it usually does. : )
Its an MDL-1011D with an FD1771-B01.
What's the deal with this chip? Is it formatting the the disk as 360k?
Nothing special. It is a SINGLE DENSITY (FM) ONLY chip.
Although it might give a final capacity of 360K or thereabouts,
It's parameters are most certainly NOT the same as the IBM "360K" format.
It is most likely formatting it as 10 256 byte sectors per track,
or as 18 128 byte sectors.
Tools for looking at MFM disks would be looking for MFM. NOT FM, and would
prob'ly default to expecting 512 bytes per sector.