Usage:

You have to format (FAT) SD card using computer, in root directory create ATARI folder. In this folder you can place folders and files. This is the start folder for SIO2SD. It's a good idea to use folders with up to about 100 files than one big folder with many, many files. On the first use of a new formatted card SIO2SD will create SIO2SD.CFG file in root directory, where configuration will be stored (files to disks mapping). To perform firmware upgrade, just put SIO2SD.BIN (28k version) into the root directory, then insert card with this file and press proper key combination. Note: the directory named ATARI must be present on the card or else SIO2SD won't recognize the card and won't perform the upgrade.

Keyboard (not updated for version 3.0 - please wait for update):

On PCB there are five keys placed like this:

In version 1.0:

• K1: next atari drive (D1,D2,..)
• K2: next file/folder
• K3: parent directory (cd ..)
• K4: go to folder/map file to current atari drive
• SHIFT+K2: firmware upgrade
• SHIFT+k4: turn off current atari drive ("eject disk")

From version 1.1:

• K1: next atari drive (D1,D2,..)
• SHIFT+K1: previous atari drive (D1,D2,..)
• K2: next file/folder
• SHIFT+K2: previous file/folder
• K3: parent directory (cd ..)
• SHIFT+K3: swap D1 and D2 (up to version 2.2 - firmware upgrade)
• K4: go to folder/map file to current atari drive
• SHIFT+K4: turn off current atari drive ("eject disk")

From the version 2.0 device started with K4 pressed goes to setup mode (from version 3.0 also holding the SHIFT key for about 5 seconds goes to setup mode). In this mode keys have meaning as follows:

• K1: next option
• SHIFT+K1: previous option
• K2: next option setting
• SHIFT+K2: previous option setting
• K3: back to normal mode
• SHIFT+K3: firmware upgrade

Options:

• sio high speed
  • off
  • hsindex from 1 to 16 (6 is the default setting)
• cfg tool load (when to override D1 to load configuration program)
  • never
  • startup+shift - only when SHIFT was pressed during startup (power on)
  • every startup
  • D1 is off - When D1 is not assigned
  • shift pressed - SHIFT always cause D1 override (tested on every SIO 'S' command on D1 - available from version 2.2)
• LED mode (meanig of LEDs)
  • SD read/write - first LED shows SD reads, second LED shows SD writes
  • SIO read/write - first LED shows SIO reads, second SIO writes
  • SD act/SIO act - first LED shows any SD activity, second any SIO activity
• device id (number of device for SIO2SD.XEX - available from version 2.2)
  • values from 0 to 3
• write protect (write protection in ATR files - available from version 2.2)
  • never - ATR's are always R/W (write protect flag ignored)
  • obey ATR flag - obey ATR write protect flag - default
  • always - ATR's are always R/O
• disks to roll (How many disks will be rolled on SHIFT+K3)
  • values from 2 (swap D1 and D2) to 15 (shift all disks)
• key rep delay (keyboard autorepetition delay - in 1/50s.)
  • values from 0 to 50 (0 - 1s)
• key rep step (keyboard autorepetition step - in 1/50s.)
  • values from 0 to 10 (0 - 0.2s)