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Re: Back after almost 30 years?

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Is this the same John D. Baker of Applicard fame?  I built the high 
speed serial daughter card for the Applicard, originally based on 
schematics and data from an old website you had.  I did a how-to blog on 
it a few years back.  Best CP/M card ever made!
https://planemo.org/2012/07/29/high-speed-serial-port-for-the-apple-ii-pcpi-applicard/


Eric


On 7/19/25 8:08 PM, John D. Baker wrote:
> While recovering from shoulder surgery, I watched a lot of retro-computing
> videos from YouTube (especially Usagi Electric) and it made me all
> nostalgic for the kind of hacking I used to do.  So I dug my Davidge
> DSB-4/6 (DSB-4000 rev. B) out and resumed GIDE hacking.
> 
> I now have it booting from the hard disk.  I've read the work Armin
> Diehl did with a VHDL implementation of GIDE on his Prof80 ECB system
> and liked it enough that I'm trying to transition my naive disk-handling
> to his partitioning scheme.
> 
> I was hoping to read/write Davidge floppies w/22DISK and have disk
> definitions for them, but 22DISK operates 3.5-inch floppies at 300kbps
> in DD mode so it can't read a disk produced on the Davidge nor can the
> Davidge read a disk written by 22DISK.  The closest I've come is to
> image a Davidge disk w/IMD and re-write it using 250k->300k conversion.
> Conversely, format a disk with 22DISK and my Davidge disk definition,
> image it with IMD and re-write it using 300k->250k conversion.
> 
> I assembled what I consider a minimum viable system disk and imaged it
> with IMD, but a copy written from that image has a bad sector in the
> last sector (18) on track 0 (3.5/5.25, 18 128-byte SD sectors).  The
> DD/MFM data area is intact, however.
> 

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Thread

Back after almost 30 years? "John D. Baker" <jdbaker@spike.technoskunk.fur> - 2025-07-19 20:08 -0500
  Re: Back after almost 30 years? "John D. Baker" <jdbaker@consolidated.net> - 2025-07-19 20:49 -0500
  Re: Back after almost 30 years? ECNeilson <eric@neilsonhart.com> - 2025-07-25 15:01 -0500
    Re: Back after almost 30 years? "John D. Baker" <jdbaker@consolidated.net> - 2025-07-25 15:49 -0500
      Re: Back after almost 30 years? ECNeilson <eric@neilsonhart.com> - 2025-07-25 19:36 -0500
        Re: Back after almost 30 years? Steven Hirsch <snhirsch@gmail.com> - 2025-07-31 10:19 -0400
  Re: Back after almost 30 years? ECNeilson <eric@neilsonhart.com> - 2025-07-25 15:07 -0500
  Re: Back after almost 30 years? ECNeilson <eric@neilsonhart.com> - 2025-07-25 15:08 -0500
  Re: Back after almost 30 years? Steven Hirsch <snhirsch@gmail.com> - 2025-07-31 10:17 -0400

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