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/* Floppy Disk Drives */
====Floppy Disk Drives====
While other 8-bit systems had several serious limitations, the C64 only had one: the Commodore 1541 floppy disk drive, sold for use with the 64, was notoriously slow. It happened because:
* Marketing insisted on compatibility with the 1540 (the floppy drive sold with the Vic-20) which was slow because the shift register in the 6522 VIA chip didn't work, so it bit shifting had to transfer a bit at a time be done with the 6502 instead of a byte at a time. Using the 6526 CIA chip instead would have fixed the problem.
* Then transfer had to go even slower because unlike the Vic-20, the 64's video chip has to completely take over the bus one out of every eight active scan lines.
