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
> 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
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
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.
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.
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
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
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
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
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
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
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
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
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
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