RobSmithDev | How Data is Encoded and Stored on Floppy Disks @RobSmithDev | Uploaded January 2022 | Updated October 2024, 4 minutes ago.
A two part series: In this part i'll take a look at how data is encoded and stored, and read back on a floppy disk.
Make some notes, because the next video is all about copy protection!
Ever wanted to know how a floppy disk works?
Small Note: At (09:00) The Sync Word would actually decode to A9, but its called the "A1 Sync Word" If you decode/encode it you can still see that its not possible to make this sequence - Thanks to Keir Fraiser for pointing this out.
If you want to support my channel then consider becoming a Patreon!
Patreon: patreon.com/RobSmithDev
Discord: discord.gg/MKZ6HA6ZWE
Chapters:
Welcome (00:00)
Introduction and Background (00:12)
Physical Storage (00:58)
Auto-Gain (02:27)
MFM Encoding (03:38)
PLL (06:53)
Index Signal (07:52)
SYNC Mark/Word (08:24)
Write Precompensation (09:05)
What is DrawBridge? (09:48)
Summary (10:23)
Music:
rotate picture by rush
technology by axel of brainstorm (1992)
Copyright © RobSmithDev 2021-2022
robsmithdev.co.uk
Where appropriate, all efforts were made to trace & obtain copyright
holders permissions to reproduce their material in this video.
If you have any questions regarding content please get in touch.
#floppydisk #mfm #encoding #vintagecomputing
A two part series: In this part i'll take a look at how data is encoded and stored, and read back on a floppy disk.
Make some notes, because the next video is all about copy protection!
Ever wanted to know how a floppy disk works?
Small Note: At (09:00) The Sync Word would actually decode to A9, but its called the "A1 Sync Word" If you decode/encode it you can still see that its not possible to make this sequence - Thanks to Keir Fraiser for pointing this out.
If you want to support my channel then consider becoming a Patreon!
Patreon: patreon.com/RobSmithDev
Discord: discord.gg/MKZ6HA6ZWE
Chapters:
Welcome (00:00)
Introduction and Background (00:12)
Physical Storage (00:58)
Auto-Gain (02:27)
MFM Encoding (03:38)
PLL (06:53)
Index Signal (07:52)
SYNC Mark/Word (08:24)
Write Precompensation (09:05)
What is DrawBridge? (09:48)
Summary (10:23)
Music:
rotate picture by rush
technology by axel of brainstorm (1992)
Copyright © RobSmithDev 2021-2022
robsmithdev.co.uk
Where appropriate, all efforts were made to trace & obtain copyright
holders permissions to reproduce their material in this video.
If you have any questions regarding content please get in touch.
#floppydisk #mfm #encoding #vintagecomputing
