Description
The Mini BurgerDisk is a micro-SD backed “hard disk drive” for the Apple II.
Its main feature is its daisy-chaining port, meaning that you can plug another storage device after it. It aims at being a simple hard disk, and comes with a period-correct set of features (store and access data, let the user use their external floppy drives in conjunction with itself) in a period-correct enclosure.
You can read more about this device on the BurgerDisk project page. You can also browse the firmware code, PCB design and schematics, and enclosure STL files in the BurgerDisk git repository. It is free software and open-hardware.
The Mini BurgerDisk has a little sibling, the DominoDisk.
Features
BurgerDisk features the following:
- a MicroSD slot for the card on which you can put one to four ProDOS images, with an optional config.txt file much like the SPIISD.
- a cable to connect to the computer or the previous device in the chain
- a female DB19 connector to connect another device after it
- no on-device button or screen to manage images.
It is more suited to people who want to have a full, complex storage solution suited to their needs, and less to people who often switch the image(s) presented to the computer.
Compatibility
It is fully compatible with:
- Apple //c (ROM0 or later) – tested with ROM3 A2S4000 and ROM4x A2S4100,
- Apple IIgs – tested on ROM1
- Apple //c+
- the original Liron card
- the Liron Reborn
It is somewhat compatible with:
- the SoftSP cards (GrapplerMinus, a2pico, …). Chaining an Unidisk 3.5″ to a BurgerDisk results in read errors on the 3.5″ floppy. Chaining a Disk//c to a BurgerDisk works correctly, but the motor of the 5.25″ sometimes gets enabled during I/O access on the BurgerDisk.
Kit options
The Mini BurgerDisk kit comes with an integrated PCB, with the ATMega328P and microSD module on board. It requires a bit of soldering, only the two DB19 connectors and the adapter’s IDC20 header. It is more expensive than the full-size kit, because the PCB is more expensive to have manufactured.