Aza D. Oberman wrote:

> As though anticipating this thread, Joe Campbell in "C Programmer's Guide to
> Serial Communications", Howard Sams & Co., 1978, remarks as follows on page
> 144:
> 
> "The IBM PC family represents the height of folly in this regard, where the
> system -- DOS and ROM BIOS --  does not contain simple unadorned functions
> to perform character-by-character serial I/O.  

Interesting to hear a comment about the IBM PC in a book three years 
before the PC appeared....
Anyway: the BIOS routines for the serial port far from fancy. But when 
you accessed the hardware directly (bypassing BIOS) the Async Adapter 
performed much much better than via BIOS. I never experienced the 
'required' handshaking in this way.

Regards, Rob.

-- 
Rob Hamerling, Vianen, NL phone +31-347-322822
homepage: http://www.robh.nl/
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