Upgrade your Atari XF551 Disk Drive with either the Bob Woolley or HyperXF (Stefan Dorndorf) upgrades. Each version has unique features that you may want to consider.
Bob Woolley ROM -
- Allows the installation and use of a 720K 3 1/2" Floppy Drive
- Changes numbers of tracks to 80
- Tweaks the track seek timing to match a typical 3 1/2" floppy drive
- Spin-up delay improving write reliability
- Provides density retry
- Available for either 5 1/4" or 3 1/2" Disk Versions
- Sector skewing
- Faster read/writes
- Disk partitioning
- Fixes density detection bug
- Fixes PAL/NTSC incompatibility
Each chip is verified and a labeled accordingly.