Sio2sd black - SD/SDHC card reader for Atari 8bit with SIO CABLE

71.99 EUR
price: |pieces:
69.83 EUR |2+ (3%)
67.67 EUR |5+ (6%)
65.51 EUR |10+ (9%)
63.35 EUR |50+ (12%)

Number of pieces:


 Please, read this:  VERY IMPORTANT !


  • SD CARD not included - You can buy it HERE
  • Most of the games for atari 8bit needs BASIC to be DISABLED - it means You have to press and hold ATARI OPTION KEY at power on.
  • Online manual HERE
  • Increase Your loading speed up to 127kb/s - click HERE
  • Fimware uploaded 3.1 RC2  / customized/





Sio2sd is a device that allows you to load games/applications into 8-bit Atari computers via SIO interface from SD/MMC cards.




Device abilities:



  • Works with SD/MMC (FAT12,FAT16 and FAT32 formats
  • Handles ATR (rw), XFD (ro) and COM/XEX (ro) file types
  • 16x2 LCD display allows to "walk" catalog tree and choose files to load
  • Handles SIO with turbo (allows to set speed index from 1 to 16, default is 6 (69kb/s), in versions 1.x speed index was always 10 (51kb/s))
  • All densities with 128B and 256B sectors, including 16MB disks
  • Handles drives d1 to d8 (up to version 1.2 only d1 to d4 drives were available)
  • Can be configured using ATARI (it's possible to load configuration tool directly from MCU flash memory, so no SD card is needed)





  • 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).
  • 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. 









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





  • 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
    • no card - only if SD card is not inserted (default setting)
    • 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



Inside box:

  • cased sio2sd device with SIO CABLE
  • Sd CARD not included - You may get it HERE


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Dear All,

From 16.07.2016 till end of the month I`m on holiday. I will not have acces to my mailbox and all orders made during that time will be posted at August 1st soonest.

Last July postage day is FRIDAY 15th for orders made till 15th 8 am local time

Best regards, Lotharek

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