laptops and 5.25 inch floppy drives?
chrism3667 at yahoo.com
Tue Jan 9 17:32:11 CST 2007
>That's why God made Catweasels.
Yeah, one of those would be nice I suppose. I'm just
"And GCR doesn't imply varaible data rate or spindle
Durango that I posted a web page on used GCR to good
without fooling with spindle speed (almost a 1MB on a
diskette). I believe that Microtech marketed a PC
similarly (although I'd have to check to make sure).
someone's written a Catweasel driver that fits almost
4MB on a 1.44MB
Yeah and what was the point of making that chick
suspend the thing in air while they snapped the
picture? I think the picture would have been just as
alluring if they set it on a table and had her
embellish it that manner.
The Victor 9000 places 1.2 megs (how conveniently
deceptive) on a DD floppy. I know it uses GCR
encoding, and yes that doesn't equate to a variable
speed spindle, just that commonly they go together (it
seems anyway). I'm not sure if it does, but my guess
> Macintosh GCR diskettes (400K/800K) require a wider
> range of data transfer
> rates, but can be done with the "DELUXE Option
> Board" or the "Catweasel".
Now that's good news, because I know the Macs have
variable spindle rates (that was my whole point about
getting a REAL vintage Mac! You get to hear the
whir-WHIR-whir-whir-WHIR-whir). I have an apparently
early version of the "Deluxe" Option Board (were all
them designated Deluxe?). It uses all discrete logic.
I was pointed to a site that had all or most of the
associated warez, but I've yet to try it out.
If it wasn't obvious, the underlying subject of this
part of thread is how to deal with the lack of a
Victor 9000 boot floppy.
> Sirius/Victor 9000 diskettes should be doable with
> the flux transition
> boards, but last time that I needed to, there was a
> Victor 9000 handy, so
> we just shoved the data through the serial port.
It's been a while *obviously* but aren't the means to
format individual tracks embedded in the rom-bios? Or
were those dos services? I have a few books out in the
shed, maybe I should just look it up! I had envisioned
a scheme by which I could hack onto the bios so a
blank floppy could be formatted in a V9000, and
subsequently the date/image from a normal floppy could
be transferred to it (I have a whole boatload of
images for the machine, but I'm not quite sure how
they created the image of a boot floppy...or why if it
can't be created w/o a bootable V9000).
*went out to the shed. Yes there is present in the
BIOS a service to format tracks. Not all clones comply
in this way though (but where would the routine to do
this be if not in the bios?). I noticed in the docs
for my NEC APC III that DOS function calls were more
or less the same as a vanilla pc, but I don't recall
seeing mention of the equivalent BIOS calls. Anyone know?*
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