System Control Handlers (changes)
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Programmer's Reference Manuals
ยป System Control Handlers
| # | Meaning | OS_ChangeEnvironment R1 value | R2 value | R3 value |
|---|---|---|---|---|
| 0 | Memory limit | Memory limit | Unused | Unused |
| 1 | Undefined instruction | Handler code | Unused | Unused |
| 2 | Prefetch abort | Handler code | Unused | Unused |
| 3 | Data abort | Handler code | Unused | Unused |
| 4 | Address exception | Handler code | Unused | Unused |
| 5 | Other exceptions (reserved) | Unused | Unused | Unused |
| 6 | Error | Handler code | Handler R0 | Error buffer |
| 7 | CallBack | Handler code | Handler R12 | Register dump buffer |
| 8 | BreakPoint? | Handler code | Handler R12 | Register dump buffer |
| 9 | Escape | Handler code | Handler R12 | Unused |
| 10 | Event? | Handler code | Handler R12 | Unused |
| 11 | Exit | Handler code | Handler R12 | Unused |
| 12 | Unused SWI? | Handler code | Handler R12 | Unused |
| 13 | Exception registers | Register dump buffer | Unused | Unused |
| 14 | Application space | Memory limit | Unused | Unused |
| 15 | Currently active object | CAO pointer | Unused | Unused |
| 16 | UpCall | Handler code | Handler R12 | Unused |
| 32 | Branch Through 0 Handler? | Handler code | Unused | Unused |
| 33 | Command Line Area? | Unused | Size of command line area | Command line area |
| 34 | Exception Dump Region | Unused | Size of exception dump region | Exception dump region |
Controlling sources: Hdr:EnvNumbers managed by the allocations manager
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