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To connect a normal PC floppy drive as "drive B:" to the +3 you need a 34 way ribbon cable with an IDC card edge connector at one end, and an IDC socket connector at the other. | To connect a normal PC floppy drive as "drive B:" to the +3 you need a 34 way ribbon cable with an IDC card edge connector at one end, and an IDC socket connector at the other. | ||
Modern floppy drives don't provide the drive ready signal, so the | Modern floppy drives don't provide the drive ready signal, so the {{overline|READY}} line needs shorting to ground to signal to the spectrum that the drive is ready (adding a switch here so you can manually toggle the signal on and off is a good idea otherwise the spectrum won't start up unless there's a disk in the drive). | ||
=====Drive===== | =====Drive===== | ||
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=====+3DOS format disks===== | =====+3DOS format disks===== | ||
3.5" disks can be formatted in a variety of different capacities as CP/M disks. The +3 ROM cannot format 3.5" disks itself so either a utility is required on the + | 3.5" disks can be formatted in a variety of different capacities as CP/M disks. The +3 ROM cannot format 3.5" disks itself so either a utility is required on the +3 (such as [http://www.worldofspectrum.org/zxplus3e/software.html#mformat|The Spectrum +3 Multiformatter] by Garry Lancaster), or the disk must be prepared on the PC. | ||
=====DOS format disks===== | =====DOS format disks===== |