DEC PDP-8/E wanted - still looking

Rick Murphy rick at rickmurphy.net
Fri Nov 27 08:43:25 CST 2020


On 11/27/2020 6:07 AM, Tom Hunter via cctalk wrote:
> Hi Dave,
>
> Thanks for Bob Armstrong's old email.
>
> I have not seen Jim's VHDL code, but I am quite confident I can fix this.
> Tom Urban wrote that the IOB6120 is misbehaving, so I will have to do some
> fault finding or debugging anyway.
> I would appreciate a short Fortran code snippet which reproduces the
> problem.
> I don't really want to have to learn how to play Adventure to reproduce
> this. Games are not my thing except maybe chess.

That's pretty simple. A "Hello world" program will probably show it.

         INTEGER INPUT(20)
         WRITE(4,1)
1       FORMAT(1X,'ENTER A STRING')
         READ(4,2)INPUT
2       FORMAT(20A1)
         WRITE(4,3)INPUT
3       FORMAT(1X, 'YOU SAID ', 20A1)
         STOP
         END

Create "TEST.FT" with that content, then "EXEC TEST.FT" at the OS/8 dot 
prompt.

If you can successfully enter a string and get a result, then you're 
probably not having interrupt issues.

     -Rick



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