Difference between revisions of "List of SITS system calls"
From Computer History Wiki
(EMT or TRAP.) |
(Add more.) |
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| Line 37: | Line 37: | ||
| 4 | | 4 | ||
| .SINK | | .SINK | ||
| − | | | + | | Disable floating point |
| − | | | + | | None |
| − | | | + | | None |
|- | |- | ||
| 5 | | 5 | ||
| .FLOAT | | .FLOAT | ||
| − | | | + | | Enable floating point |
| − | | | + | | None |
| − | | | + | | None |
|- | |- | ||
| 6 | | 6 | ||
| .INVOK | | .INVOK | ||
| − | | | + | | Invoke capability |
| − | | | + | | Capability and two more arguments |
| | | | ||
|- | |- | ||
| 7 | | 7 | ||
| .QULK | | .QULK | ||
| − | | | + | | Lock queue |
| − | | | + | | Queue |
| | | | ||
|- | |- | ||
| 10 | | 10 | ||
| .QUNLK | | .QUNLK | ||
| − | | | + | | Unlock queue |
| − | | | + | | Queue |
| | | | ||
|- | |- | ||
| 11 | | 11 | ||
| .TTGIV | | .TTGIV | ||
| − | | | + | | Give TTY away |
| − | | | + | | Master sphere, and teletype |
| | | | ||
|- | |- | ||
| 12 | | 12 | ||
| .TTGET | | .TTGET | ||
| − | | | + | | Get the TTY |
| − | | | + | | Teletype |
| | | | ||
|- | |- | ||
Revision as of 11:54, 5 October 2022
SITS system calls were done using EMT in loder versions, and TRAP in newer. The system call number makes up the lower 7 bits. Bit 200 can be set to have the call fault on error, in which case a $ replaces the . in the symbolic name.
System call arguments go on the stack.
| Number | Name | Function | Arguments | Return values |
|---|---|---|---|---|
| 0 | .NOOP | None | None | None |
| 1 | .FORK | Create new process | Entry point | None |
| 2 | .POOFF | Kill self | None | None |
| 3 | .SLEEP | Sleep | Long word: positive number 60th seconds, or negative time to continue | None |
| 4 | .SINK | Disable floating point | None | None |
| 5 | .FLOAT | Enable floating point | None | None |
| 6 | .INVOK | Invoke capability | Capability and two more arguments | |
| 7 | .QULK | Lock queue | Queue | |
| 10 | .QUNLK | Unlock queue | Queue | |
| 11 | .TTGIV | Give TTY away | Master sphere, and teletype | |
| 12 | .TTGET | Get the TTY | Teletype | |
| 13 | .WRDI | |||
| 14 | .WRDO | |||
| 15 | .BYTI | |||
| 16 | .BYTO | |||
| 17 | .BLKI | |||
| 20 | .BLKO | |||
| 21 | .MAP | |||
| 22 | .ALLOC | |||
| 23 | .CRUSR | |||
| 24 | .RDMAP | |||
| 25 | .FONT | |||
| 26 | .SSTAT | |||
| 27 | .VIDSW | |||
| 30 | .RUG | |||
| 31 | .GERRW | |||
| 32 | .TIME | |||
| 33 | .SYJB | |||
| 34 | .GETID | |||
| 35 | .MFPI | |||
| 36 | .OSPAC |
