Re: HP 9816 CP/M-68K

2018-02-12 Thread Eric Smith via cctalk
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

Re: HP 9816 CP/M-68K

2018-02-12 Thread Guy Sotomayor Jr via cctalk
> 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

Re: HP 9816 CP/M-68K

2018-02-12 Thread Chuck Guzis via cctalk
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

Re: HP 9816 CP/M-68K

2018-02-12 Thread js--- via cctalk
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

Re: HP 9816 CP/M-68K

2018-02-12 Thread Fred Cisin via cctalk
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.

Re: HP 9816 CP/M-68K

2018-02-12 Thread Chuck Guzis via cctalk
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. 

Re: HP 9816 CP/M-68K

2018-02-12 Thread Fred Cisin via cctalk
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

Re: HP 9816 CP/M-68K

2018-02-12 Thread Glen Slick via cctalk
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

Re: HP 9816 CP/M-68K

2018-02-12 Thread Al Kossow via cctalk
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

Re: HP 9816 CP/M-68K

2018-02-12 Thread Eric Smith via cctalk
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

Re: HP 9816 CP/M-68K

2018-02-12 Thread Fred Cisin via cctalk
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

Re: HP 9816 CP/M-68K

2018-02-12 Thread Al Kossow via cctalk
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.

Re: HP 9816 CP/M-68K

2018-02-11 Thread Glen Slick via cctalk
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

Re: HP 9816 CP/M-68K

2018-02-11 Thread Al Kossow via cctalk
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

Re: HP 9816 CP/M-68K

2018-02-09 Thread Paul Berger via cctalk
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