ImageDisk and some 8" images posted
dave04a at dunfield.com
Tue Aug 2 22:06:48 CDT 2005
At 21:13 02/08/2005 -0500, you wrote:
>On 8/2/05, Dave Dunfield <dave04a at dunfield.com> wrote:
>> I've posted the latest version of ImageDisk and some 8" images that
>> I have archived with it on my classic collection page:
>> Look under "Disks/Software images" near the bottom of the page.
>Nice. Any chance you have some RX01 disks to try? They are SSSD,
>unlike the hybrid-density RX02 format. I have a Tandon TM848 in a
>Dataram Qbus chassis that would look great attached to a PC. I only
>have a couple of S100 boxes, and CP/M isn't really my thing, but I
>have lots of RX01-based machines (and disks I could archive).
Sorry, I don't have any DEC 8" material to try. The only DEC disks I
have are VT-180 and Rainbow (RX50) - both of which backup and restore
with no problems - but they are 5.25" format - almost but not quite
completely unlike what you are asking about.
I've done most of the 8" system masters that I have here, and so far I
have not encountered an 8" disk that I can't read or recreate - this
includes a number of mixed FM/MFM disks. I'm using a QUME QUMETRAK 242
attached with the adapter cable described in my help screens.
As long as the format can be read and written by the PC controller (which
does have some limitations), it should (may) work - please let me know.
One weakness - the program currently cannot handle disks which have different
sector sizes within the same track ... so far I have encountered only one disk
type which *MAY* do this, BMC if800 - TeleDisk reports that the sector size
changes within the track ... however I have never been able to get TeleDisk to
restore a workable disk, so I am not convinced that it handles it either - it
also reports sectors missing and "no data" in sectors, as well as really odd
sector numbers - I have a feeling that it is an incompatible format and it is
getting "garbage". Still, it's an option I could provide if there proves to be
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
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