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Commodore History | The gory details: What happens when you save a file from a Commodore 64 to a 1541 disk drive? @commodorehistory | Uploaded December 2021 | Updated October 2024, 3 hours ago.
If you're curious about how a Commodore 64 writes data to a 1541 drive across the IEC serial bus, this video will shed some light on that. I connected a logic analyzer to an IEC cable and captured all the bus traffic when I saved a Hello World program to a 1541 disk drive. In this video I walk through the captured traffic and explain the basics of the IEC bus protocol.

References:
pagetable.com/?p=1018
zimmers.net/anonftp/pub/cbm/programming/serial-bus.pdf

Music used in this video:
Electro Animal - Oh the City
The gory details: What happens when you save a file from a Commodore 64 to a 1541 disk drive?Hello World in every programming language on the Commodore SuperPETExploring an early silver-label Commodore 64Converting a Commodore 8250LP disk drive from 220V to 110V powerHistoric Commodore building, 3330 Scott BlvdRepairing Commodore employee Neil Harris 8050 Disk DriveSuper OS-9 running on a 1981 Commodore SuperPETPart 2: Commodore Pong Console composite video modImplementing Commodores IEC bus protocol on a KIM-1 single board computerBuilding Wizard of Wor for the Commodore 64 from the original 1983 source codeInterview with Don Greenbaum, the former treasurer of Commodore InternationalHistoric Commodore building: 390 Reed St in San Jose, California

The gory details: What happens when you save a file from a Commodore 64 to a 1541 disk drive? @commodorehistory

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