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Apple II
Keir Fraser edited this page Jan 22, 2025
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1 revision
FlashFloppy features an alternative firmware emulating an Apple II drive.
Follow steps for Firmware Update but use the update file contained in the alt/apple2 subfolder of the FlashFloppy distribution.
The Apple II firmware requires a jumper at location S0 only.
| IDC20 | DB19 | Signal Name | Gotek Pin |
|---|---|---|---|
| 2 | 11 | PH0 | UART RX (J4) |
| 4 | 12 | PH1 | UART TX |
| 6 | 13 | PH2 | 18 |
| 8 | 14 | PH3 | 20 |
| 10 | 15 | /WREQ | 24 |
| 12 | 16 | SEL | 32 |
| 14 | 17 | /DRVEN | 10 |
| 16 | 18 | RD | 30 |
| 18 | 19 | WR | 22 |
| 20 | 10 | WRPROT | 28 |
| 11 | 6 | +5v (Power) | +5v |
| 1,3,5,7 | 1,2,3 | Ground (GND) | GND |
Notes:
- IDC20: Pins at the Apple II IDC 20-pin header
- DB19: Pins at the Apple II D-sub 19-pin connector
- SFRKC30.AT2: The rotary encoder select (push button) function is unavoidably disabled on this Gotek model
- Developers only: In a serial debug build of the firmware, signals PH0 and PH1 are moved respectively to KC30 rotary header pins DT (J8) and CLK
Usage is straightforward and very similar to the regular firmware. Apple II firmware currently supports only HFE images (.HFE file extension)
You can convert PO and DO files to HFE using the Greaseweazle command-line tool. For example:
gw convert mydisk.po mydisk_po.hfe::double_step
To convert a modified HFE image back to PO/DO:
gw convert mydisk_po.hfe mydisk.po