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  • lynchaj's Avatar
    March 17th, 2017, 02:28 AM
    OK, we have accounted for all 5 of the prototype boards. An additional person would like to build the Gryphon/Jackalope too but the PCB house only...
    2 replies | 200 view(s)
  • lynchaj's Avatar
    March 15th, 2017, 02:03 AM
    Hi Still need one more person (at least) to get a board/build and test. If you've been looking to get involved in a home brew computer project or...
    2 replies | 200 view(s)
  • lynchaj's Avatar
    March 13th, 2017, 07:31 AM
    Looking for new people to build and test Gryphon Gen3 (Jackalope) prototype PCBs for the Gryphon 68030 home brew computer project. Will be ordering...
    2 replies | 200 view(s)
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2 Visitor Messages

  1. View Conversation
    Hello Andrew,

    Have you had any recent contact with Allison? She hasn't
    posted in those forums that I know of for a while now.
    I read some bad news about Barry Watzman from os.cpm
    crowd and it made me very sad. I have learned so much by reading his posts. I was wondering if Allison is alright....

    ziloo
  2. View Conversation
    Andrew,

    I just got home on Monday and your N8VEM boards with ROMs were waiting for me in a pile with a few other purchases.

    The Forum has gotten out of hand and I just haven't had time to read everything. So where are we on the N8VEM? There is a backplane kit already available? Has anyone come up with a bonefide Jameco or Digi-Key BOM list? Floppy drive?

    Looking forward to building your computer.
Showing Visitor Messages 1 to 2 of 2
About lynchaj

Basic Information

Date of Birth
May 9, 1967 (49)
About lynchaj
Location:
Dayton, Ohio
Interests:
Homebuilt computers, S-100, Z80, CRTCs
Occupation:
Electronic Engineer

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February 23rd, 2011 11:04 AM
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December 20th, 2006
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Home Page
http://www.geocities.com/lynchaj/
View lynchaj's Blog

Recent Entries

NEEDED: author for N8VEM article or access to publication

by lynchaj on May 29th, 2012 at 08:30 AM
Quote Originally Posted by lynchaj View Post
Hi
I am looking for an author, editor, or publisher willing to publish a brief article on the N8VEM home brew computing project. If you have the ability to get an article in print please contact me as soon as possible. This has to be a publication like a magazine, journal, or book not an online blog or forum.

Over at N8VEM we are struggling to keep the N8VEM Wikipedia page from being deleted by the Wikipedia editors. Apparently they consider the page as not "notable"

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A New Z80 Based WD2793 Floppy Disk Controller Board (FDC) for S-100 Bus systems

by lynchaj on March 22nd, 2011 at 03:35 AM
Quote Originally Posted by monahan_z View Post
For people that may be interested in building a new S-100 Floppy disk
controller (FDC) board that can be configured to work with most 8” and
5” (soft sectored) disks I have designed and built a new Z80 based
Western Digital 2793 FDC board. With Andrew’s help (3 prototype
boards later!) we now have a board that we are very happy with.

With its own independent Z80 on board, it is completely command driven
via 2 parallel ports (with strobe bits) to/from

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An S-100 Board to convert IBM PC keyboard data to parallel ASCII

by lynchaj on March 4th, 2011 at 08:45 AM
Hi! I still have a small number of these PCBs left so if anyone would like some please let me know. This is a nice looking board in any vintage S-100 system and blends in well. The displays are very useful and interesting to watch. The commonly available PS/2 keyboard is an inexpensive and reliable way to communicate with your system.

http://s100computers.com/My%20System...20Keyboard.htm

Thanks and have a nice day!

Andrew

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A 4Mg Static RAM S-100 board

by lynchaj on March 4th, 2011 at 08:42 AM
Hi! I did a recent reorder of the S-100 4MB SRAM boards and have a few left over. If you would like one they are $20 each plus $3 shipping in the US or $6 elsewhere.

These boards were very popular last year and many builders requested for another batch. I got some extra PCBs anticipating there would be others coming along later.

http://s100computers.com/My%20System...AM%20Board.htm

These boards have no known defects AFAIK and

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S-100 Front Panel (Bus Monitor) project

by lynchaj on June 22nd, 2010 at 02:51 AM
Quote Originally Posted by lynchaj View Post
Hi! Here is a quick update on the S-100 System Monitor Board project. The second round of prototype PCBs for the base board and display mezzanines are built and tested. There were some corrections to all the boards but I think we've got it now. I will be ordering manufactured PCBs in the near future. What remains is to update the trace routing on the SMB base board and display mezzanines and then place the order.

Functionally the S-100 SMB is like an updated version of the Jade

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