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Daisy Chainer


Link the Floppy Emu disk emulator into a daisy chain with other Apple II disk drives. For use with Floppy Emu Model B and C.

In stock

SKU: 8900 Category:

Product Description

The Daisy Chainer adapter provides an easy way to combine your Floppy Emu disk emulator with other Apple II disk drives, forming a daisy chain connected to the Apple II. Every computer in the Apple II family supports some type of daisy chaining, and the Apple IIgs supports up to six drives in a single chain – a great feature! With the Daisy Chainer, a mix of real and emulated disk drives can be combined into a single daisy chain for maximum flexibility.


  • automatic configuration, no user setup required
  • enables attachment of real or emulated downstream drives, after the Floppy Emu in the daisy chain
  • improved compatibility and Floppy Emu drive type detection for upstream drives


The Daisy Chainer is for use only with Apple II family computer systems. Macintosh and Lisa computers do not support daisy chaining. Do not connect the Daisy Chainer board to a Mac or Lisa.

The Smartport daisy chain version of the Floppy Emu firmware is required for use with the Daisy Chainer if your Floppy Emu is configured to emulate a Smartport Hard Disk or a Unidisk 3.5. If your Floppy Emu is configured to emulate a 5.25 inch or 3.5 inch floppy drive, you can use the normal firmware.

Floppy Emu Model B and C are compatible with the Daisy Chainer board. Due to hardware differences, the original Model A does not support this style of daisy chaining.

The next downstream drive in the daisy chain after the Floppy Emu should be a 3.5 inch or 5.25 inch floppy drive (or a second Floppy Emu emulating one of those drive types). The attachment of downstream Smartport or Unidisk 3.5 inch drives is not supported.

Do not use Floppy Emu’s Dual 5.25 mode in combination with the Daisy Chainer. It will cause disk errors and may damage the Floppy Emu or your daisy-chained 5.25 inch drive.

The Daisy Chainer makes it possible to add more disk drives “downstream” from the Floppy Emu. If using a Daisy Chainer, do not select dual 5.25 emulation mode – use single 5.25 mode if you need to emulate a 5.25 inch drive. Combining dual 5.25 mode with a Daisy Chainer and another downstream 5.25 inch drive can create a fork in the daisy chain. Both the Floppy Emu and the other drive will try to function as Drive 2, fighting with each other and possibly damaging both devices.


The board’s male and female DB-19 connectors plug into the upstream and downstream drives in the daisy chain, and there’s a 10 x 2 rectangular connector for attaching the Floppy Emu cable. Usage is automatic, with no configuration required. Three status LEDs labeled E, S, and C provide feedback on what’s happening:

E S Floppy Emu Emulation Mode
off off Smartport hard disk
off on 5.25 inch floppy
on on 3.5 inch floppy
on off error
C Connected Downstream Drive Type
on 3.5 inch floppy
off 5.25 inch floppy

Drive Order Requirements

In order to work correctly, Apple II computers require daisy chained drives to be connected in a specific order:

  1. any 3.5 inch drives must go first in the chain
  2. Smartport and Unidisk 3.5 inch drives must go second
  3. 5.25 inch drives must go last

There can be at most two drives of each type, six drives total.

Additional Information

Weight 1.1 oz
Dimensions 2 x 2 x 1 in

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