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add missing documentation for the JA instruction. Add the JAE (JNC alias) instruction

Kevin Ramharak 2019-11-03 14:20:38 +01:00
parent 2d6d76bbe5
commit 7693fd805e
1 changed files with 11 additions and 1 deletions
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12
Instruction-Set.md

@ -39,6 +39,7 @@ Current opcodes unsused
| [**HWQ**](#hwq) *source* | *mem/reg/imm* | 0x1C |`- - - - -` | | [**HWQ**](#hwq) *source* | *mem/reg/imm* | 0x1C |`- - - - -` |
| [**INC**](#inc) *destination* | *mem/reg* | 0x2A | `- X X X -` | | [**INC**](#inc) *destination* | *mem/reg* | 0x2A | `- X X X -` |
| [**JA**](#ja) *target* | *mem/reg/imm* | 0x2E |`- - - - -` | | [**JA**](#ja) *target* | *mem/reg/imm* | 0x2E |`- - - - -` |
| [**JAE**](#jae) *target* | *mem/reg/imm* | 0x22 |`- - - - -` |
| [**JC**](#jc) *target* | *mem/reg/imm* | 0x21 |`- - - - -` | | [**JC**](#jc) *target* | *mem/reg/imm* | 0x21 |`- - - - -` |
| [**JG**](#jg) *target* | *mem/reg/imm* | 0x0F |`- - - - -` | | [**JG**](#jg) *target* | *mem/reg/imm* | 0x0F |`- - - - -` |
| [**JGE**](#jge) *target* | *mem/reg/imm* | 0x10 |`- - - - -` | | [**JGE**](#jge) *target* | *mem/reg/imm* | 0x10 |`- - - - -` |
@ -300,14 +301,23 @@ destination = destination + 1
### JA ### JA
#### Details #### Details
| mnemonic | opcode | operands | carry | zero | sign | overflow | break |
| -------- | ------ | -------- | ----- | ---- | ---- | -------- | ----- |
| `JA target` | `0x2E` | `target` : `mem` / `reg` / `imm` | `-` | `-` | `-` | `-` | `-` |
#### Description #### Description
`JA` jumps to the `target` if the carry flag and the zero flag are **NOT** set.
#### Pseudo code #### Pseudo code
```py ```py
if CARRY_FLAG == 0 and ZERO_FLAG == 0:
IP = target
``` ```
### JAE
#### Description
`JAE` is an alias for the [`JNC`](#jnc) instruction
### JC ### JC
#### Details #### Details
| mnemonic | opcode | operands | carry | zero | sign | overflow | break | | mnemonic | opcode | operands | carry | zero | sign | overflow | break |