PDP 11/45 light chaser

[Gooijen H]

RE: PDP 11/45 light chaser

>>>>> "Gooijen" == Gooijen H <Gooijen> writes:

 Gooijen> The drawback of the light chaser program that uses the RESET
 Gooijen> instruction is that the heads load and unload of the RX02
 Gooijen> drive in my PDP-11/40.  That clunck-clunck sound is not
 Gooijen> pretty for a longer while ...

> So start up the KW11L clock, point its vector to an RTI, and use a
> WAIT instead of a RESET...
>
>      paul

Hmm, I thought that the RESET instruction provides the ~100 ms delay
so that the lights are visible (on the 11/35 they are LEDs anyway)
but this instruction also asserts the RESET/ (BUS INIT-L ?) signal.
That is what makes the RX drive clunk - at least that's what I thought.

- Henk, PA8PDP.