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From: tulp@klipper.UUCP
Newsgroups: comp.sys.atari.st
Subject: Re : Midi Problem.
Message-ID: <700@klipper.cs.vu.nl>
Date: Thu, 26-Mar-87 04:36:32 EST
Article-I.D.: klipper.700
Posted: Thu Mar 26 04:36:32 1987
Date-Received: Sat, 28-Mar-87 04:22:14 EST
References: <686@atari.UUCP>
Reply-To: tulp@cs.vu.nl (Tulp E)
Organization: VU Informatica, Amsterdam
Lines: 26

In article <14085@cca.CCA.COM>, Keith Hedger writes:
> I am trying to read data from the midi in port on the 520 ST and
> am having a problem...
>

Keith,  your problem *is* that you don't have enough real time  to 
do much screen output. I learned it the hard way too (though I did 
find  the  cause  in an hour or so).  What Ron  Goodman  has  been 
writing  simply cannot be true since if you do a 'conin(3)'  (bios 
number  2) call,  the operating system suspends execution of  your 
program  until a byte is available (both of you do  use  conin(3), 
don't you ?).  And I am absolutely positive about this,  I had  my 
program  'hanging' when it tried to read more bytes then my  ESQ-1 
sent.  If you don't use conin(3) but just look at the buffer,  the 
speed  of the computer may be too high (still,  if your  sequencer 
also  sends  velocity,  after touch and what  all  messages,  that 
sounds unlikely to me).

Drive and synthesize carefully,

Eduard Tulp  tulp@cs.vu.nl

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