# Especificaciones

Arquitectura:           16bit
Tamaño de instruccion:  16bit
PROM:                   Ilimitado
RAM:                    1kB - 20kB
STACK:                  256 - Ilimitado

# Registros

Cada registro puede almacenar 16 bits


| ADDR |   NAME   |   NOTES   |
| ---- | -------- | --------- |
| 0x00 |   REG0   |           |
| 0x01 |   REG1   |           |
| 0x02 |   REG2   |           |
| 0x03 |   REG3   |           |
| 0x04 |   REG4   |           |
| 0x05 |   REG5   |           |
| 0x06 |   REG6   |           |
| 0x07 |   REG7   |           |
| 0x08 |   REG8   |           |
| 0x09 |   REG9   |           |
| 0x0A |   REG10  |           |
| 0x0B |   REG11  |           |
| 0x0C |   REG12  | RAM VALUE |
| 0x0D |   REG13  | RAM ADDR  |
| 0x0E |    PC    |           |
| 0x0F |  IN/OUT  |           |

# Opcodes

Las instrucciones en este CPU tienen un tamaño total de 8 bytes, es decir, 4 parametros de 16bit cada uno.

[OPCODE] [PARAM1] [PARAM2] [TARGET1]

PARAM1 y PARAM2 soportan 2 modos de direccionamiento:
- Modo registro
- Modo inmediato

TARGET1 indica el registro donde se guardará el resultado.

## ALU

| OPCODE | ADDR | PARAM1 | PARAM2 | TARGET1 | DESCRIPTION |
| ------ | ---- | ------ | ------ | ------- | ----------- |
|  ADD   | 0x00 |   R0   |   R1   |   T1    |             |
|  SUB   | 0x01 |   R0   |   R1   |   T1    |             |
|  MUL   | 0x02 |   R0   |   R1   |   T1    |             |
|  DIV   | 0x03 |   R0   |   R1   |   T1    |             |
|  AND   | 0x04 |   R0   |   R1   |   T1    |             |
|  OR    | 0x05 |   R0   |   R1   |   T1    |             |
|  NOT   | 0x06 |   R0   |   R1   |   T1    |             |
|  NAND  | 0x07 |   R0   |   R1   |   T1    |             |
|  NOR   | 0x08 |   R0   |   R1   |   T1    |             |
|  XOR   | 0x09 |   R0   |   R1   |   T1    |             |
|  XNOR  | 0x0A |   R0   |   R1   |   T1    |             |
|  NEG   | 0x0B |   R0   |   R1   |   T1    |             |
|   -    | 0x0C |        |        |         |             |
|   -    | 0x0D |        |        |         |             |
|   -    | 0x0E |        |        |         |             |
|   -    | 0x0F |        |        |         |             |
| ------ | ---- | ------ | ------ | ------- | ----------- |
|  ADD   | 0x40 |   #0   |   R1   |   T1    |             |
|  SUB   | 0x41 |   #0   |   R1   |   T1    |             |
|  MUL   | 0x42 |   #0   |   R1   |   T1    |             |
|  DIV   | 0x43 |   #0   |   R1   |   T1    |             |
|  AND   | 0x44 |   #0   |   R1   |   T1    |             |
|  OR    | 0x45 |   #0   |   R1   |   T1    |             |
|  NOT   | 0x46 |   #0   |   R1   |   T1    |             |
|  NAND  | 0x47 |   #0   |   R1   |   T1    |             |
|  NOR   | 0x48 |   #0   |   R1   |   T1    |             |
|  XOR   | 0x49 |   #0   |   R1   |   T1    |             |
|  XNOR  | 0x4A |   #0   |   R1   |   T1    |             |
|  NEG   | 0x4B |   #0   |   R1   |   T1    |             |
|   -    | 0x4C |        |        |         |             |
|   -    | 0x4D |        |        |         |             |
|   -    | 0x4E |        |        |         |             |
|   -    | 0x4F |        |        |         |             |
| ------ | ---- | ------ | ------ | ------- | ----------- |
|  ADD   | 0x80 |   R0   |   #1   |   T1    |             |
|  SUB   | 0x81 |   R0   |   #1   |   T1    |             |
|  MUL   | 0x82 |   R0   |   #1   |   T1    |             |
|  DIV   | 0x83 |   R0   |   #1   |   T1    |             |
|  AND   | 0x84 |   R0   |   #1   |   T1    |             |
|  OR    | 0x85 |   R0   |   #1   |   T1    |             |
|  NOT   | 0x86 |   R0   |   #1   |   T1    |             |
|  NAND  | 0x87 |   R0   |   #1   |   T1    |             |
|  NOR   | 0x88 |   R0   |   #1   |   T1    |             |
|  XOR   | 0x89 |   R0   |   #1   |   T1    |             |
|  XNOR  | 0x8A |   R0   |   #1   |   T1    |             |
|  NEG   | 0x8B |   R0   |   #1   |   T1    |             |
|   -    | 0x8C |        |        |         |             |
|   -    | 0x8D |        |        |         |             |
|   -    | 0x8E |        |        |         |             |
|   -    | 0x8F |        |        |         |             |
| ------ | ---- | ------ | ------ | ------- | ----------- |
|  ADD   | 0xC0 |   #0   |   #1   |   T1    |             |
|  SUB   | 0xC1 |   #0   |   #1   |   T1    |             |
|  MUL   | 0xC2 |   #0   |   #1   |   T1    |             |
|  DIV   | 0xC3 |   #0   |   #1   |   T1    |             |
|  AND   | 0xC4 |   #0   |   #1   |   T1    |             |
|  OR    | 0xC5 |   #0   |   #1   |   T1    |             |
|  NOT   | 0xC6 |   #0   |   #1   |   T1    |             |
|  NAND  | 0xC7 |   #0   |   #1   |   T1    |             |
|  NOR   | 0xC8 |   #0   |   #1   |   T1    |             |
|  XOR   | 0xC9 |   #0   |   #1   |   T1    |             |
|  XNOR  | 0xCA |   #0   |   #1   |   T1    |             |
|  NEG   | 0xCB |   #0   |   #1   |   T1    |             |
|   -    | 0xCC |        |        |         |             |
|   -    | 0xCD |        |        |         |             |
|   -    | 0xCE |        |        |         |             |
|   -    | 0xCF |        |        |         |             |

## CONDITIONALS

En los condicionales TARGET1 representa a la direccion del PC (Program Counter) que se saltará si se cumple la condicion.

| OPCODE | ADDR | PARAM1 | PARAM2 | TARGET1 | DESCRIPTION |
| ------ | ---- | ------ | ------ | ------- | ----------- |
|  EQ    | 0x10 |   R0   |   R1   |   T1    |    equal    |
|  NEQ   | 0x11 |   R0   |   R1   |   T1    |  not equal  |
|  LS    | 0x12 |   R0   |   R1   |   T1    |     less    |
|  LSE   | 0x13 |   R0   |   R1   |   T1    | less or eq  |
|  GR    | 0x14 |   R0   |   R1   |   T1    |   greater   |
|  GRE   | 0x15 |   R0   |   R1   |   T1    |greater or eq|
|        | 0x16 |   R0   |   R1   |   T1    |             |
|        | 0x17 |   R0   |   R1   |   T1    |             |
| ------ | ---- | ------ | ------ | ------- | ----------- |
|  EQ    | 0x50 |   #0   |   R1   |   T1    |    equal    |
|  NEQ   | 0x51 |   #0   |   R1   |   T1    |  not equal  |
|  LS    | 0x52 |   #0   |   R1   |   T1    |     less    |
|  LSE   | 0x53 |   #0   |   R1   |   T1    | less or eq  |
|  GR    | 0x54 |   #0   |   R1   |   T1    |   greater   |
|  GRE   | 0x55 |   #0   |   R1   |   T1    |greater or eq|
|        | 0x56 |   #0   |   R1   |   T1    |             |
|        | 0x57 |   #0   |   R1   |   T1    |             |
| ------ | ---- | ------ | ------ | ------- | ----------- |
|  EQ    | 0x90 |   R0   |   #1   |   T1    |    equal    |
|  NEQ   | 0x91 |   R0   |   #1   |   T1    |  not equal  |
|  LS    | 0x92 |   R0   |   #1   |   T1    |     less    |
|  LSE   | 0x93 |   R0   |   #1   |   T1    | less or eq  |
|  GR    | 0x94 |   R0   |   #1   |   T1    |   greater   |
|  GRE   | 0x95 |   R0   |   #1   |   T1    |greater or eq|
|        | 0x96 |   R0   |   #1   |   T1    |             |
|        | 0x97 |   R0   |   #1   |   T1    |             |
| ------ | ---- | ------ | ------ | ------- | ----------- |
|  EQ    | 0xD0 |   #0   |   #1   |   T1    |    equal    |
|  NEQ   | 0xD1 |   #0   |   #1   |   T1    |  not equal  |
|  LS    | 0xD2 |   #0   |   #1   |   T1    |     less    |
|  LSE   | 0xD3 |   #0   |   #1   |   T1    | less or eq  |
|  GR    | 0xD4 |   #0   |   #1   |   T1    |   greater   |
|  GRE   | 0xD5 |   #0   |   #1   |   T1    |greater or eq|
|        | 0xD6 |   #0   |   #1   |   T1    |             |
|        | 0xD7 |   #0   |   #1   |   T1    |             |


## CONTROL UNIT

| OPCODE | ADDR | PARAM1 | PARAM2 | TARGET1 | DESCRIPTION |
| ------ | ---- | ------ | ------ | ------- | ----------- |
|  RSTR  | 0x18 |   --   |   --   |    -    |             |
|  PUSH  | 0x19 |   R1   |   --   |    -    |             |
|  POP   | 0x1A |   --   |   --   |    T1   |             |
| ------ | ---- | ------ | ------ | ------- | ----------- |
|  PUSH  | 0x59 |   #1   |   --   |    -    |             |

## FUNCTIONS

| OPCODE | ADDR | PARAM1 | PARAM2 | TARGET1 | DESCRIPTION |
| ------ | ---- | ------ | ------ | ------- | ----------- |
|  CALL  | 0x20 |   R1   |   --   |    -    |             |
|  RET   | 0x21 |   --   |   --   |    -    |             |
|  HALT  | 0x22 |   --   |   --   |    -    |             |
| ------ | ---- | ------ | ------ | ------- | ----------- |
|  CALL  | 0x60 |   #1   |   --   |    -    |             |