MIDI trouble causes Windows not to start up

MIDI trouble causes Windows not to start up

Post by Sander Kooijma » Thu, 26 Sep 1996 04:00:00



Hello,

Yesterday I connected two MIDI-instruments to my computer as follows:

   | computer |       | sound module (SC55) |          | keybord         |
   | in  out  |       | in2 out1 thru1  in1 |          | in  out thru    |
    ----------         ---------------------            -----------------
      |   |              |         |    |                 |   |   |
      |   \--------------+---------+----+-----------------/   |   |
      |                  |         |    |                     |   |
      |                   \--------+----+---------------------+---/
      |                            |    |                     |
      \----------------------------/    \---------------------/

thru1 outputs the data received at in1.

My computer uses the MIDI-interface of a soundblaster compatible soundcard.
When I started Windows 95 after a while everything went slower than usual.
(ok, usually it goes slow, but now it went much slower) After a while the
computer didn't get on anymore... (deadlock? individual starvation?)

After some hours of thinking I found out that the computer sent out
everything that it receveid at his IN-port. But I didn't expect this. So a
MIDI-loop was created without me knowing it... Later I found out that
cakewalk has an option to send out everything received at the IN-port.

So I have some questions:
- Is it possible that the OUT-port of my computer functions like MIDI THRU?
- Why did Windows 95 crash?

(important: the keyboard sends active sensing...)

Thanks for your attention.

Sander Kooijmans