Row of bombs 3823947 133031855 2007-05-23T21:51:26Z EdC 892739 /* See also */ {{screens of death}} [[Image:Row_of_bombs.png|right|frame|This is a screenshot from an ([[Emulator|emulated]]) [[Atari ST]], the four bombs indicate that the system error "Illegal Instruction" has occurred.]] [[Atari_TOS|TOS]]-based systems, such as the [[Atari ST|Atari ST]], used a '''row of bombs''' to indicate a critical system error. The number of bombs displayed revealed information about the occurred error. The error (also called an ''[[Exception handling|exception]]'') is reported by the [[Motorola 68000]] [[microprocessor]]. * 1 bomb: Reset, Initial PC2 * 2 bombs: Bus Error * 3 bombs: Address Error * 4 bombs: Illegal Instruction * 5 bombs: Zero Divide * 6 bombs: CHK Instruction * 7 bombs: TRAPV Instruction * 8 bombs: Privilege Violation * 9 bombs: Trace * 10 bombs: Line 1010 Emulator * 11 bombs: Line 1111 Emulator * 12–13 bombs: [unassigned, reserved] * 14 bombs: Format Error * 15 bombs: Uninitialized Interrupt Vector * 16–23 bombs: [unassigned, reserved] * 24 bombs: Spurious Interrupt * 25 bombs: Level 1 Interrupt Autovector * 26 bombs: Level 2 Interrupt Autovector * 27 bombs: Level 3 Interrupt Autovector * 28 bombs: Level 4 Interrupt Autovector * 29 bombs: Level 5 Interrupt Autovector * 30 bombs: Level 6 Interrupt Autovector * 31 bombs: Level 7 Interrupt Autovector * 32–47 bombs: Trap Instruction Vectors * 48–63 bombs: [unassigned, reserved] * 64–255 bombs: User Interrupt Vectors == See also == {{screens of death}} == References == * [http://www.chebucto.ns.ca/Technology/ACGC/info/faq/faq1.html FAQ for comp.sys.atari.st] * [http://www.freescale.com/files/archives/doc/ref_manual/M68000PRM.pdf Programmer’s Reference Manual for the Motorola 68000 family] [[Category:Atari ST]] [[Category:Screens of death]]