| Diskette size || 356 KB || 338 KB || 308 KB
|}
Notes:
* To use 80-track drives and/or dual-head drives, you need to use another CPC DOS instead of AMSDOS. The most popular one is [[ParaDOS]]. It can handle up to 796 KB instead of 178 KB for AMSDOS.
* Half of the original AMSDOS rom is occupied by [[Dr. Logo]] from Digital Research. If you replace AMSDOS with ParaDOS, you will lose access to Dr. Logo.
* Even with an AMSDOS rom, the FDC can handle exotic 3inch floppy disk formats. RSX programs exist to get up to 208 KB of usable space per side.
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