Difference between revisions of "Kaypro"

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(Created page with "Category:Computing thumb|A Kaypro 10 I'm (very) slowly refurbishing == Reference == [https://www.element14.com/community/people/mfetting/blog/2019/09/15/kaypro-10-mfm-hard-drive-emulation Kaypro 10 with MFM Hard Drive Reader/Emulator] [http://www.retroarchive.org/maslin/ Retrocomputing disk images, including CP/M and Kaypro stuff] == Misc. == [http://www.chrisfenton.com/dd9-kaypro-edition/ A developer ports his game to Kaypro]")
 
 
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[[File:Kaypro.jpg|thumb|A Kaypro 10 I'm (very) slowly refurbishing]]
[[File:Kaypro.jpg|thumb|A Kaypro 10 I'm (very) slowly refurbishing]]
== Log (most recent first) ==
* 2A fuse on mains side blew, probably when RIFA capacitor failed
* RIFA film capacitors in PSU replaced, they're notorious for failure after a long time. PSU still does not seem to provide rails. Fault in other components?
* Floppy seems fine, fault is in PSU. While diagnosing, got single arc in some PSU component. Does not boot, does not provide rails.
* Discover that disconnecting floppy allows boot to BIOS, suspect fault there causing overcurrent
* Does not boot, squealing/chirping noise, manual indicates short in a component
* Initial boot(s): HDD error of some sort


== Reference ==
== Reference ==


[https://www.element14.com/community/people/mfetting/blog/2019/09/15/kaypro-10-mfm-hard-drive-emulation Kaypro 10 with MFM Hard Drive Reader/Emulator]
=== MFM ===
[http://www.retroarchive.org/maslin/ Retrocomputing disk images, including CP/M and Kaypro stuff]
* [https://www.pdp8online.com/mfm/mfm.shtml David Gesswein's BeagleBone-based MFM emulator]
* [https://www.element14.com/community/people/mfetting/blog/2019/09/15/kaypro-10-mfm-hard-drive-emulation Kaypro 10 with MFM Hard Drive Reader/Emulator]
* [https://github.com/GlasgowEmbedded/glasgow/tree/687268482737c04e9784bf100ff5d93ef45177ce/software/glasgow/applet/memory/floppy floppy (*not* HDD) MFM in Glasgow]
** whitequark seems to intend to do MFM drives at some point
 
=== Software ===
* [https://www.dougmahugh.com/scs-draw/ SCS-Draw: teaching the Kaypro to draw]
* [http://www.retroarchive.org/maslin/ Retrocomputing disk images, including CP/M and Kaypro stuff]


== Misc. ==
== Misc. ==
 
* [https://retrocmp.de/kaypro/kay-p1_vers.htm Kaypro versions guide]
[http://www.chrisfenton.com/dd9-kaypro-edition/ A developer ports his game to Kaypro]
** See also [https://retrocmp.de/kaypro/kay-p2_hrdw.htm Part 2] for hardware information
* [https://obsolescence.wixsite.com/obsolescence/introduction-to-cpm Introduction to CP/M]
* [http://www.chrisfenton.com/dd9-kaypro-edition/ A developer ports his game to Kaypro]
* [https://oldcrap.org/2020/05/31/kaypro-ii/ Information (and wonderful images) on the Kaypro II]

Latest revision as of 10:27, 25 March 2022



A Kaypro 10 I'm (very) slowly refurbishing

Log (most recent first)

  • 2A fuse on mains side blew, probably when RIFA capacitor failed
  • RIFA film capacitors in PSU replaced, they're notorious for failure after a long time. PSU still does not seem to provide rails. Fault in other components?
  • Floppy seems fine, fault is in PSU. While diagnosing, got single arc in some PSU component. Does not boot, does not provide rails.
  • Discover that disconnecting floppy allows boot to BIOS, suspect fault there causing overcurrent
  • Does not boot, squealing/chirping noise, manual indicates short in a component
  • Initial boot(s): HDD error of some sort

Reference

MFM

Software

Misc.