DOS ain't dead

Grant Searle's CP/M on breadboard - updated 23th July 2013 (Announce)

posted by Arjay, 05.08.2013, 19:05

> [b]New link:
> http://searle.hostei.com/grant/cpm/index.html

I received an important update direct from Grant via email (23 July, 2013):

> Someone has just spotted an omission from the schematic. The DCDA
> and DCDB pins should be connected to ground, otherwise the interface
> is intermittent. They are connected on my machine (you can see it on the
> pics) but I missed it on the schematic. Strange, several others have
> built it with no issue, maybe these pins normally float to ground if not
> connected? Anyway, to be safe, please make sure the DCDA and DCDB pins on > the SIO are connected to ground.
>
> Apologies for this, but I thought I?d better let you
> know as soon as I was told.
>
> I have updated the schematics on the page, but you will
> need to refresh the
> browser page to see it.


A project I would love to build entirely from scratch if I had more time

Complete thread:

• Using Fabrice Bellard's runcom to run COM files under Linux - Arjay, 21.03.2012, 01:17 (Announce)
  • Using Fabrice Bellard's runcom to run COM files under Linux - marcov, 21.03.2012, 13:43
    • Using Fabrice Bellard's runcom to run COM files under Linux - Arjay, 21.03.2012, 19:53
      • Using Fabrice Bellard's runcom to run COM files under Linux - Ibidem, 30.03.2012, 01:00
        • Using Fabrice Bellard's runcom to run COM files under Linux - Rugxulo, 31.03.2012, 00:47
        • Using Fabrice Bellard's runcom to run COM files under Linux - marcov, 31.03.2012, 09:15
          • libx86 / Alpha - Rugxulo, 10.04.2012, 00:26
    • Using Fabrice Bellard's runcom to run COM files under Linux - Rugxulo, 19.04.2012, 05:40
  • Emu8080-Stefan Tramm's Intel 8080 CPU Emulator running CP/M - Arjay, 16.04.2012, 21:14
    • Emu8080-Stefan Tramm's Intel 8080 CPU Emulator running CP/M - Rugxulo, 17.04.2012, 00:03
    • Emu8080-Stefan Tramm's Intel 8080 CPU Emulator running CP/M - Ibidem, 17.04.2012, 08:47
      • Emu8080-Stefan Tramm's Intel 8080 CPU Emulator running CP/M - Rugxulo, 17.04.2012, 19:49
    • Grant Searle's CP/M on breadboard - updated 21st April 2012 - Arjay, 22.04.2012, 18:57
      • Grant Searle's CP/M on breadboard - updated 26th April 2012 - Arjay, 04.05.2012, 22:54
        • Grant Searle's CP/M on breadboard - updated 26th April 2012 - Arjay, 02.08.2012, 00:37
          • Grant Searle's CP/M on breadboard - updated 23th July 2013 - Arjay, 05.08.2013, 19:05