On Mon, Feb 12, 2018 at 3:56 PM, js--- via cctalk
wrote:
> That's really "slick," Glen.If it's not too burdensome to give a brief
> answer, how would you keep track of the time, or know how long feeding a
> byte at a time took?
>
On an original PC or XT (without special turbo modes of clones
> On Feb 12, 2018, at 3:00 PM, Chuck Guzis via cctalk
> wrote:
>
>
> Most don't believe me what I say that the floppy disc dates from 1946.
And the fax was invented in 1842 (yes *before* the telephone)!
TTFN - Guy
On 02/12/2018 01:55 PM, Fred Cisin via cctalk wrote:
> Thank you!
> Although these days, it's just curiousity and nostalgia.
Yup. The shame is that some of the more advanced 765-based FDCs came in
just as the floppy was sunsetting. For example, the Intel 82078 boasts,
among other things, a 2Mbp
On 2/12/2018 3:52 PM, Glen Slick via cctalk wrote:
On Mon, Feb 12, 2018 at 12:34 PM, Eric Smith via cctalk
wrote:
Format a track with the sector size that occurs later on the track, with
dummy sectors ahead of them and gap sizes selected to position them
properly.
Start formatting with the sec
But, I don't know how to FORMAT a track with multiple sector sizes with
NEC 765 type controller. Not as hard with WD style controllers.
On Mon, 12 Feb 2018, Chuck Guzis via cctalk wrote:
It's actually not too difficult. There were DOS utilities that could,
for example, copy IBM XDF format.
Th
On 02/12/2018 12:23 PM, Fred Cisin via cctalk wrote:
>> Imagedisk can't handle mixed sector sizes on a track.
>
> Reading or writing multiple sized sectors can be done with multiple passes.
>
> But, I don't know how to FORMAT a track with multiple sector sizes with
> NEC 765 type controller. Not
But, I don't know how to FORMAT a track with multiple sector sizes with
NEC 765 type controller. Not as hard with WD style controllers.
On Mon, 12 Feb 2018, Eric Smith wrote:
Format a track with the sector size that occurs later on the track, with
dummy sectors ahead of them and gap sizes sele
On Mon, Feb 12, 2018 at 12:34 PM, Eric Smith via cctalk
wrote:
>
> Format a track with the sector size that occurs later on the track, with
> dummy sectors ahead of them and gap sizes selected to position them
> properly.
> Start formatting with the sector size for the earlier sectors. Abort the
>
On 2/12/18 12:23 PM, Fred Cisin via cctalk wrote:
>> Imagedisk can't handle mixed sector sizes on a track.
>
> Reading or writing multiple sized sectors can be done with multiple passes.
I don't believe the .imd image format supports it either, so I just found
another
tool that could handle th
On Mon, Feb 12, 2018 at 1:23 PM, Fred Cisin via cctalk <
cctalk@classiccmp.org> wrote:
> Reading or writing multiple sized sectors can be done with multiple passes.
> But, I don't know how to FORMAT a track with multiple sector sizes with
> NEC 765 type controller. Not as hard with WD style contr
Imagedisk can't handle mixed sector sizes on a track.
Reading or writing multiple sized sectors can be done with multiple
passes.
But, I don't know how to FORMAT a track with multiple sector sizes with
NEC 765 type controller. Not as hard with WD style controllers.
With multiple sector s
On Mon, Feb 12, 2018 at 9:58 AM, Al Kossow via cctalk
wrote:
>
>> Any technical reason you used Teledisk instead of ImageDisk? Can
>> Teledisk do something with these disks that ImageDisk cannot?
>>
>
> Imagedisk can't handle mixed sector sizes on a track.
I had forgotten about that. I vaguely re
On 2/11/18 7:35 PM, Glen Slick via cctalk wrote:
> Any technical reason you used Teledisk instead of ImageDisk? Can
> Teledisk do something with these disks that ImageDisk cannot?
>
Imagedisk can't handle mixed sector sizes on a track.
On Sun, Feb 11, 2018 at 7:12 PM, Al Kossow via cctalk
wrote:
>
> also, I may have discovered a bug in the HcX disk analysis tool
> the track map really confused by the .td0 images I created, though they
> appear to work
> when written to a new disk
Any technical reason you used Teledisk instead
got it running this afternoon
it won't run on a 9000/216 with 256k, adding a 1meg card made it happy (ie.
programs load and run)
still need to figure out why B: isn't working
the memory test with 1.25mb is slw
also, I may have discovered a bug in the HcX disk analysis tool
the track map real
On 2018-02-09 4:05 PM, Al Kossow via cctalk wrote:
floppies recovered and uploaded to http://bitsavers.org/bits/HP/HP_9000/cpm-68k
I'm pretty sure this will only work in a 9121 single-sided drive but I'll be
trying
to boot it soon
I would suspect the issue is that it only support Amigo devi
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