Revision as of 23:45, 21 May 2022 (view source) Puppydrum64 (talk \| contribs) (redid the section and cut out a bunch of fluff) ← Older edit		Revision as of 23:51, 21 May 2022 (view source) Puppydrum64 (talk \| contribs) m (→‎The Vector Table) Newer edit →
Line 117: The 68000's vector table contains more than this, but to keep things simple there will be a few things omitted. * Address $00000000 contains the initial value of the stack pointer. You never need to <code>MOVE.L (0),SP</code>, the CPU does this automatically. * Address $00000004 contains the program start. The second thing the CPU ~~will~~does (after loading the default stack pointer from $00000000) is <code>JMP</code> to the address stored in $00000004 (note that it doesn't jump TO $00000004, it loads the 4 bytes stored there and makes that the new program counter value.) * The next 8 longwords are the hardware traps. Each represents the memory location of a function or procedure meant for a hardware error (the 68000 doesn't have segmentation faults but it's a similar concept. Among them include handlers for division by zero, signed overflow, etc.) * Interrupt requests and user-defined traps go here as well.

Category:68000 Assembly: Difference between revisions

Category:68000 Assembly (view source)