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Merge branch 'master' of https://github.com/MasterQ32/DasOS

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Morten Delenk 2016-06-05 12:52:29 +00:00
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documentation/supervm.md
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@ -1,4 +1,4 @@
# SuperVM
# SuperVM
SuperVM is a stack machine with a simple, but flexible command
set.
@ -213,23 +213,24 @@ The math command is a compound operator that contains all
ALU operations. The ALU operation is selected
by the `cmdinfo`.
| cmdinfo | Operation |
|---------|-----------------------------|
| 0 | Addition |
| 1 | Subtraction |
| 2 | Multiplication |
| 3 | Division |
| 4 | Euclidean Division / Modulo |
| 5 | Bitwise Logic And |
| 6 | Bitwise Logic Or |
| 7 | Bitwise Logic Xor |
| 8 | Bitwise Logic Not |
| 9 | Rotating Bit Shift Left |
| 10 | Rotating Bit Shift Right |
| 11 | Arithmetic Bit Shift Left |
| 12 | Arithmetic Bit Shift Right |
| 13 | Logic Bit Shift Left |
| 14 | Logic Bit Shift Right |
| cmdinfo | Operation | Forumla |
|---------|-----------------------------|-----------------|
| 0 | Addition | input1 + input0 |
| 1 | Subtraction | input1 - input0 |
| 2 | Multiplication | input1 * input0 |
| 3 | Division | input1 / input0 |
| 4 | Euclidean Division / Modulo | input1 % input0 |
| 5 | Bitwise Logic And | input1 ∧ input0 |
| 6 | Bitwise Logic Or | input1 ∨ input0 |
| 7 | Bitwise Logic Xor | input1 ⊻ input0 |
| 8 | Bitwise Logic Not | ˜input0 |
| 9 | Rotating Bit Shift Left | input1 ⊲ input0 |
| 10 | Rotating Bit Shift Right | input1 ⊳ input0 |
| 11 | Arithmetic Bit Shift Left | input1 ≺ input0 |
| 12 | Arithmetic Bit Shift Right | input1 ≻ input0 |
| 13 | Logic Bit Shift Left | input1 « input0 |
| 14 | Logic Bit Shift Right | input1 » input0 |
| 15 | Negation | -input0 |
#### SpGet, SpSet
These commands modify the stack pointer directly.