From: jan80trs@yahoo.com   
      
   Neil,   
      
   I do remember working seriql with my models III and 4P - most with the   
   latter - and I never had a problem with scrolling  19200bd.   
      
   Actually, the serial interface of the models III an early model 4s was   
   identical. It was with the models 4 (GA), 4P (non-GA and GA) and 4D that the   
   serial card was build-in. But again, no problem scrolling @19200.   
      
   I even have a terminal program, producing ANSI and PC-graphics on a 30-lines   
   display, and that scrolled fine at 9600. I can't remenmber I tried it at   
   19200. I think you underestimate the power of the early TRS-80's.   
      
   Like I said, most of my experience comes from models III and models 4. I do   
   have a serial interface on my I, but I hardly ever used it. A friend of mine   
   said that - because it wasn't interrupt-driven - that he could use it as a   
   barcode-port. ANd it worked!   
      
      
   Greetings from the TyRannoSaurus   
   Jan-80   
      
      
   "N Morrison"  wrote in message   
   news:1186874812.118916.254020@z24g2000prh.googlegroups.com...   
   > On Aug 11, 4:03 pm, "winston19842...@yahoo.com"   
   >  wrote:   
   >   
   >> Again, connection speed != throughput.   
   >> I just wonder how you'd write software that would go to top of screen   
   >> and start overwriting without scrolling, unless it received a "soft   
   >> command" that would HOME it without clearing the screen? Which may   
   >> happen if you get a data overrun, aren't checking and return a   
   >> character such as a HOME from the remote. Or sending a binary file   
   >> with said character.   
   >   
   > The screen is memory mapped to &H3C00 - &H3CFF so you can handle it as   
   > you wish.   
   >   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)