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Fix spelling

Jordi Pakey-Rodriguez 2018-01-02 13:13:08 -06:00
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Instruction-Set.md

@ -48,7 +48,7 @@
# Instruction Set
## Introduction
This is an effort to specify the specific MAR Assembly Instruction Set and its behaviour. The instruction set is a subset of the 8086 instruction set. A more detailed specification if the 8086 Instruction Set can be found [here](http://www.ousob.com/ng/iapx86/ng2e5.php). Note that the MAR Instruction Set can differ from the 8086 Instruction Set.
This is an effort to specify the specific MAR Assembly Instruction Set and its behavior. The instruction set is a subset of the 8086 instruction set. A more detailed specification if the 8086 Instruction Set can be found [here](http://www.ousob.com/ng/iapx86/ng2e5.php). Note that the MAR Instruction Set can differ from the 8086 Instruction Set.
This manual tries to describe how to use the instructions and show any side effects they might have.
@ -62,7 +62,7 @@ This human readable format is parsed by the assembler which will output the actu
## Flags
Some instructions will change certain flags based on their result. These are in a special non read-write register.
The only way to set these flags is by using instructions and the only way to read these flags is with the jump behaviour
The only way to set these flags is by using instructions and the only way to read these flags is with the jump behavior.
> NOTE: The flags might be readable in the future
@ -220,7 +220,7 @@ destination = destination >> count
| `HWI source` | `0x09` | `source` : `reg` / `mem` / `imm` | `-` | `-` | `-` | `-` | `-` |
#### Description
`HWI` triggers a [Hardware Interrupt](https://github.com/simon987/Much-Assembly-Required/wiki/Hardware). `source` should be the address of the harware device. This is differnt from the RAM memory addresses. See the documentation of the hardware devices to see what an `HWI` does for each device.
`HWI` triggers a [Hardware Interrupt](https://github.com/simon987/Much-Assembly-Required/wiki/Hardware). `source` should be the address of the hardware device. This is different from the RAM memory addresses. See the documentation of the hardware devices to see what an `HWI` does for each device.
### JMP
#### Details
@ -380,7 +380,7 @@ memory[SP] = source
#### Details
| mnemonic | opcode | operands | carry | zero | sign | overflow | break |
| -------- | ------ | -------- | ----- | ---- | ---- | -------- | ----- |
| `POP destintation` | `0x14` | `destination` : `reg` / `mem` | `-` | `-` | `-` | `-` | `-` |
| `POP destination` | `0x14` | `destination` : `reg` / `mem` | `-` | `-` | `-` | `-` | `-` |
#### Description
`POP` copies the value of the memory address specified in the stack pointer to the `destination` and increments the stack pointer.
@ -500,7 +500,7 @@ Y = temp % source
#### Details
| mnemonic | opcode | operands | carry | zero | sign | overflow | break |
| -------- | ------ | -------- | ----- | ---- | ---- | -------- | ----- |
| `NEG destintation` | `0x19` | `destination` : `mem` / `reg` | `X` | `X` | `X` | `X` | `-` |
| `NEG destination` | `0x19` | `destination` : `mem` / `reg` | `X` | `X` | `X` | `X` | `-` |
#### Description
`NEG` subtracts the `destination` operand from 0 and returns the result in the `destination`. This effectively produces the two's complement of the operand.