Date   : Fri, 17 Mar 1995 15:05:06 +0000 (GMT)
From   : Mike Borcherds <borchrds.teaching@...>
Subject: Snapper

I've got a problem with snapper that I can't solve. It works fine
on level 1, but on level 2 the "monsters" alternately move and then
stand still with a period of about 1/2 second. On about level 4 
they just stand still.

I know snapper relies on bit 7 of &FE40 toggling, but I _think_ I
am emulating that correctly. Any other ideas?

To whoever was having problems booting OS1.2, I uploaded a trace
to Mark at Bristol which should be of use, if it's online.
I got my emulator to boot OS1.2 initially with no hardware
emulation - I just intercepted OSRDCH and set &FE4F and either
&FE40 or &FE41 to zero.

cheers,

Mike


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