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Groups > comp.sys.apple2.programmer > #3115

Re: Puzzling the SSC Block

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On 2016-10-10 17:58:06 +0000, Michael J. Mahon said:

> Nothing happens in the SSC, just as nothing happens in the SSC when you
> connect to it with a null modem cable. The connector block simply permutes
> the cable wires, making a straight-through cable into a null modem and vice
> versa.

Let me try to state this differently to see if I understand.

Presumption is two DTE devices (SSC and a Raspberry Pi). Since there is 
no DCE (Modem, for example), we need a modem eliminator.

I point the block arrow up toward modem. To communicate with the Pi, I 
have to use a modem eliminator (a null modem cable or adapter) to speak 
to the Pi from the SSC. Inside the modem eliminator, wires are adjusted 
to elminate the need for a modem (e.g. RTS (pin 4 on a 25-pin) is 
connected to CTS (pin 5)). -- 
https://en.wikipedia.org/wiki/Null_modem#/media/File:D25_Null_Modem_Wiring.png 


I point the block down toward terminal. To communicate with the Pi, I 
have to use a straight through cable because, by way of the wires 
inside the block, I have eliminated the need for a modem.

Do I understand?

Thanks!!!

m

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Puzzling the SSC Block ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-10-09 10:39 -0500
  Re: Puzzling the SSC Block ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-10-09 11:46 -0500
  Re: Puzzling the SSC Block roger.shimada@gmail.com - 2016-10-09 21:18 -0700
    Re: Puzzling the SSC Block ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-10-10 08:16 -0500
      Re: Puzzling the SSC Block Michael J. Mahon <mjmahon@aol.com> - 2016-10-10 12:58 -0500
        Re: Puzzling the SSC Block ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-10-11 18:52 -0500
          Re: Puzzling the SSC Block roger.shimada@gmail.com - 2016-10-11 17:47 -0700
            Re: Puzzling the SSC Block ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-10-12 09:36 -0500
              Re: Puzzling the SSC Block David Schmenk <dschmenk@gmail.com> - 2016-10-12 09:00 -0700
            Re: Puzzling the SSC Block ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-10-12 09:37 -0500
              Re: Puzzling the SSC Block roger.shimada@gmail.com - 2016-10-12 20:37 -0700
                Re: Puzzling the SSC Block ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-10-13 21:01 -0500
                Re: Puzzling the SSC Block ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-10-16 08:47 -0500
          Re: Puzzling the SSC Block David Schmidt <schmidtd@my-deja.com> - 2016-10-11 21:27 -0400
            Re: Puzzling the SSC Block ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-10-12 09:31 -0500
              Re: Puzzling the SSC Block David Schmidt <schmidtd@my-deja.com> - 2016-10-12 11:27 -0400
          Re: Puzzling the SSC Block Michael J. Mahon <mjmahon@aol.com> - 2016-10-12 01:18 -0500
            Re: Puzzling the SSC Block ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-10-12 09:39 -0500
    Re: Puzzling the SSC Block ultramagnus_tcv <mikew@thecomputervalet.com> - 2016-10-10 08:26 -0500

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