From: bjjlyates@bellsouth.net   
      
   On 8/10/07 5:52 PM, in article   
   1186782746.889257.304540@x40g2000prg.googlegroups.com, "N Morrison"   
    wrote:   
      
   > On Aug 9, 7:17 pm, u...@domain.invalid wrote:   
   >> Hi all,   
   >> I'm in need of a Model I Expansion Interface for anyone in the NJ/NY   
   >> area. Also, anyone have any specs on the TRS-80 Model I Expansion   
   >> Interface or Model IV ports? I'm looking to hook them up as terminals to   
   >> a PC running Linux and run them as terminals. How feasible is this and   
   >> what kind of adapter cables would I need? That should be a good starting   
   >> point. Thanks much.   
   >   
   > For Model I's, you need the Expansion Interface PLUS the Serial card -   
   > very hard to find now.   
   >   
   > Model III or 4 with disk is fine as they have serial ports. IIRC the   
   > speed will run no more than 2400 baud, say, if you are scrolling text.   
   > The processor just can't keep up.   
   >   
   > Cables - DB25 male goes to the TRS-80.   
   >   
   > Seems an odd thing to do these days - why with these computers?   
   >   
      
   I had a model 4 that didn't have a serial port.   
   A model 4P with serial port and I used to connect using the COMM driver at a   
   very high speed (9600 or 19.2k?).   
      
   And why can't you connect at a higher speed? I realize there is a difference   
   between connection speed and throughput, but the best of both worlds is   
   given when you connect at a high speed (say 38.4kbps) with hardware flow   
   control (CTS/RTS). Your throughput will vary depending on what your machine   
   might be doing (echoing all text to screen, uploading/downloading, disk   
   access), but it will always be running at the fastest speed possible.   
      
   --- SoupGate-Win32 v1.05   
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