New acquisition...

[Tony Duell]

> 
> Tony Duell wrote:
> > Nice machine. The QX10 is one of my favourite desktop CP/M machines. The
> > video system is based round a 7220, the serial port (IIRC) uses a 7201.
> >    
> Using a uPD7201 for the serial port is a strike against it.  High speed 

It depends on what you wnat to use that serial portr for. IIRC the s7201 
has various synchronous modes that can be very useful

> modems that transport asynchronous data over a synchronous modulation, 
> such as V.22, V.22bis, V.32, etc., have to use V.14 procedures to handle 
> cases where the transmitting device is overspeed relative to the 
> modulation, or the transmitting modem is overspeed relative to the 
> receiving side.  In the former case, up to one out of ten stop bits get 
> dropped over the modulation, and reinserted on the receiving side.  When 
> that happens, or in the case that the transmitting system's modulation 
> is faster than the receiving side (due to crystal tolerances, etc.), the 
> receiving side is allowed to shave off a portion of each stop bit on the 
> serial interface.

Right,,, Now that I did not know. However, I would not think a QX10 was a 
natural machine to connect such a modem to, 

-tony