The Commodore 128 has a highly accurate Commodore 64 mode built into it. Because of the huge games library for the C64, some C128s spent most of their time in C64 mode despite all the "real computer" advantages the C128 mode has. But C64 mode on the C128 is not perfect and some games will not work on it. In this video we'll show several examples, and where possible, provide explanations and fixes for the failures.

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Here's a newer version of Dave Plummer's talk where Frantic Freddie is specifically mentioned:    • Windows Tales: Task Manager, Pinball,...   Thanks to OddbOd for finding this!

Thanks to James Poll for finding this video:    • My 90s Life at Microsoft: Task Manage...   it's a talk given by Dave Plummer at the University of Regina in 2018 and at 9:55 he mentions meeting a more advanced C64 programmer named Kris (Hatelid) when Dave was 16. I think there's another video where Dave more specifically mentions Frantic Freddie, but this is close. Thanks James!

Index:
0:00 Intro: 99.8% compatible?
2:48 Location $D030 POKE 53296,1 FAST
5:27 Scrolls of Abadon on C64 and 128
7:54 Fixing Scrolls
10:24 Cohen's Towers on the C64
13:02 Cohen's on the C128 Fixing
14:37 Wanted! Monty Mole on 64 and 128
16:55 Fixing Monty Mole
19:16 HeMan Ilearth Stone on 64 and 128
21:26 Fixing Masters of the Universe
26:14 Frantic Freddie on C64
28:15 Freddie on 128 $D5xx sound fix
34:18 A bit of info from Kris Hatelid developer
35:47 Another SID mirror example in BASIC on 64 and 128
38:20 Location 1 difference cassette example
42:23 More location 1 CAPS LOCK Cassette Play button
46:16 1571 Problems?
48:45 Gemstone Warrior v1.1
51:22 Autoduel & Moebius fail on 1571
52:53 Autoduel & Moebius work on 1541
56:51 A bit more info...
58:34 In Conclusion and thanks!