Operating systems › Atari TOS / GEM › TOS 2.06

TOS 2.06

1991

The final ST/STE-generation TOS from 1991, adding faster disk access, an improved desktop and better hardware compatibility.

Machines

Atari 1040ST

Atari STE

Chips

Atari ST GLUE

Motorola 68000

Yamaha YM2149

Reference & documentation

External technical references for programming TOS 2.06 and for writing emulators.

ResourceTypeNotes
tos.hyp: The program format ↗FormatGEMDOS PRG header, segments and relocation table
Atari ST Hardware Register Listing (AtariForumWiki) ↗Interrupt listCPU vectors, MFP 68901 interrupts, exception handlers
Atari ST/STe/TT Hardware Register Listing ↗Memory mapComplete I/O register and memory-map listing
The Atari Compendium (Software Development Systems) ↗ProgrammingGEMDOS/BIOS/XBIOS/VDI/AES/Line-A full reference
Atari ST TOS 2.06 (Atarimania) ↗ROMsTOS 2.06 image download, scans and details
tos.hyp: About the BIOS ↗ReferenceMaintained TOS BIOS trap #13 call reference
TOS.HYP: GEMDOS Function Reference ↗ReferenceFull GEMDOS Trap #1 file/process/memory call reference
TOS.HYP: XBIOS Function Reference ↗ReferenceXBIOS Trap #14 screen, sound, keyboard, drive calls
EmuTOS source (GitHub) ↗SourceFree, complete TOS-compatible OS source code
Atari ST BIOS/XBIOS ROM Listing (TOS 2.06 disassembly) ↗SourceCommented TOS 2.06 boot and BIOS/XBIOS ROM disassembly