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Forums > C64 Coding > Spindle and Sparkle demos not launching
2024-10-29 21:01
mankeli

Registered: Oct 2010
Posts: 146
Spindle and Sparkle demos not launching

Can someone explain why demos using Sparkle or Spindle loaders can't be run from 1541U by selecting the launch file and using "mount & run"?

You got to use "Run Disk" for the whole image. 99.9999% of the C64 demos can be launched with mount & run, and somehow this only seems affect those aforementioned loaders.
 
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2024-12-02 15:27
chatGPZ

Registered: Dec 2001
Posts: 11390
Micro64 also emulates head-movement inertia (including bero typical overengineering) iirc
2024-12-04 08:48
ChristopherJam

Registered: Aug 2004
Posts: 1409
Quoting mankeli
This happens on U64 too. (Ultimate 64 Elite V1.43 - 3.11) Aerial Core for example doesn't work with mount & run, it needs run disk.


Aerial Core was the very first demo I attempted to run after I received my 1541u-II+ - I was a bit disturbed when it didn't work haha
2024-12-05 07:21
Bitbreaker

Registered: Oct 2002
Posts: 508
Quoting Quiss

Just saw this happen in The Demo Coder, albeit in an emulator. (Thanks to Trident for helping me debug!)


Thanks for pointing me to this and doing all the debug work! Meanwhile i added a cheap fix for Bitfire (just use the latest commit from github), by simply stepping to track 17, where i bogus-read a sector by job code before loading the dir-sector from track 18 and start the loader.
2024-12-05 11:24
Krill

Registered: Apr 2002
Posts: 2981
Now, test the popular loaders the hard way.

During loading, push the r/w head of an open drive off-track manually, see if the loader can cope with that. =D

(I actually did that when adding/debugging the track correction mechanics a while ago.)
2024-12-05 15:45
chatGPZ

Registered: Dec 2001
Posts: 11390
maybe prepare a disk with D64 Shredder V0.1 ? :)
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