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corten/docs/spec.md

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Rearranaged opcode order - Rearranaged opcodes to match Iridium's - Grabbed the get_test_vm() function from the Iridium 1 source to keep up with the tutorial - Specifications page with details regarding Iridium and Corten's instruction set list
2020-02-06 19:57:38 -05:00
# Specifications
## Iridium
Fixed bug with VM assigning wrong opcode - Fixed a bug with VM assigning wrong opcode. After doing a little digging into the Iridium 1 source code (skipping to the next part of the tutorial), I discovered I had to have implement from() function in both directions. I.e. the Opcode outputs integer and integer outputs an Opcode. Derp moment in retrospective since I already had it done for the former but this is a learning experience. - Moved Opcode enum to assembler module.
2020-02-08 15:14:37 -05:00
Corten [MIPS64 Release 6](https://en.wikipedia.org/wiki/MIPS_architecture#MIPS32/MIPS64_Release_6) virtual machine based on Fletcher Haynes's [So you want to build a language VM](https://blog.subnetzero.io/post/building-language-vm-part-01/) tutorial.
Rearranaged opcode order - Rearranaged opcodes to match Iridium's - Grabbed the get_test_vm() function from the Iridium 1 source to keep up with the tutorial - Specifications page with details regarding Iridium and Corten's instruction set list
2020-02-06 19:57:38 -05:00
## Instruction Set
Initial start on equality checks
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| Opcode | Function | Comment |
| --- | --- | --- |
| 0 | LOAD | Load program |
Rearranaged opcode order - Rearranaged opcodes to match Iridium's - Grabbed the get_test_vm() function from the Iridium 1 source to keep up with the tutorial - Specifications page with details regarding Iridium and Corten's instruction set list
2020-02-06 19:57:38 -05:00
| 1 | ADD |
| 2 | SUB |
| 3 | MUL |
| 4 | DIV |
Fixed mis-numbering of opcodes This bug was intentionally kept in order to make sure everything ran flawlessly regardless.
2020-02-07 01:01:39 -05:00
| 5 | HLT | Halt |
| 6 | JMP | Jump |
| 7 | JMPF | Jump forward |
| 8 | JMPB | Jump backward |
| 9 | EQ | Equal |
| 10 | NEQ | Not equal |
| 11 | GTE | Greater then or equal to |
| 12 | GT | Greater then |
Updated spec page
2020-02-07 02:17:59 -05:00
| 13 | LTE | Less then or equal to |
| 14 | LT | Less then |
Fixed mis-numbering of opcodes This bug was intentionally kept in order to make sure everything ran flawlessly regardless.
2020-02-07 01:01:39 -05:00
| 15 | JMPE | Jump if equal |
| 16 | NOP |
Initial start on equality checks
2020-02-06 21:40:09 -05:00
| _ | IGL | Illegal action |
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