AVR Software

Firmware binaries

version release date full binary (32k) upgrade binary (28k/30k)
1.0 2007.01.01 sio2sd_all.bin sio2sd.bin
1.1 2007.02.04 sio2sd_all.bin sio2sd.bin
1.2 2007.02.08 sio2sd_all.bin sio2sd.bin
1.3 2007.02.18 sio2sd_all.bin sio2sd.bin
2.0 2007.04.01 sio2sd_all.bin sio2sd.bin
2.1 2007.04.28 sio2sd_all.bin sio2sd.bin
2.2 2007.09.30 sio2sd_all.bin sio2sd.bin
2.3 2007.10.01 sio2sd_all.bin sio2sd.bin
2.5 2010.08.04 sio2sd_all.bin sio2sd.bin
3.0RC1 2011.04.03 sio2sd_all.bin sio2sd.bin
3.0RC2 2011.04.09 sio2sd_all.bin sio2sd.bin
3.0RC3 2011.04.14 sio2sd_all.bin sio2sd.bin
3.0RC4 2011.04.17 sio2sd_all.bin sio2sd.bin
3.0RC5 2011.04.27 sio2sd_all.bin sio2sd.bin
3.1RC1 2012.01.10 sio2sd_all.bin sio2sd.bin
3.1RC2 2012.02.14 sio2sd_all.bin sio2sd.bin
3.2 2022.12.23 sio2sd_all.bin sio2sd.bin
3.3 2023.02.21 sio2sd_all.bin sio2sd.bin

3.X changes

3.0rc1 -> 3.0rc2

  • Fixed LCD handling bug (RC1 doesn’t work without LCD)
  • Added “swap” command (K3 in VDISK MODE swaps mappings of D1 and D2)
  • Added “rol4” command (K4 in VDISK MODE moves mappings D1<D2<D3<D4<D1)
  • Added “ror4” command (SHIFT+K4 in VDISK MODE moves mappings D1>D2>D3>D4>D1)

3.0rc2 -> 3.0rc3

  • Fixed xex-loader.
  • Added new key combinations OPTION+SELECT and OPTION+START to turbo-loader (new turbo IRQ locations: $700 and $500).

3.0rc3 -> 3.0rc4

  • Fixed SIO routines (mainly incompatibilities with software made for TOMS turbo)

3.0rc4 -> 3.0rc5

  • Changes in SD initialization routines (“card init error” should appear much less frequently)
  • SD speed is choosen automatically (SD speed option was removed)
  • Fixed card insertion/removal logic
  • Added ability to go directly to setup when card is not present (using dbl-shift)

3.0rc5 -> 3.1rc1

  • Virtual disks simplification
  • Fixed turbo routines - emulation of Top-Drive (aka TOMS) and XF551
  • More compatible SIO routines (return to timings from version 2.x - slower, but more reliable)
  • Ordinary files and empty disks are emulated as SD disks if possible (size < 90k)

3.1rc1 -> 3.1rc2

  • Fixed bug in file handle (mainly XEX files)
  • Fixed warmstart issue in xex-loader

3.1rc2 -> 3.2

  • Fixed ATR formatting (fill the whole file with zeros)

3.2 -> 3.3

  • Fixed SpartaDOS compatibility issue (xex files mounted as disks)