source: liacs/ca/opdr2b/src/datapath.h@ 232

Last change on this file since 232 was 2, checked in by Rick van der Zwet, 15 years ago

Initial import of data of old repository ('data') worth keeping (e.g. tracking
means of URL access statistics)

  • Property svn:executable set to *
File size: 1.4 KB
RevLine 
[2]1/* Author : Rick van der Zwet
2 * S-number : 0433373
3 * Version : $Id: datapath.h 366 2007-12-04 18:29:07Z rick $
4 * Copyright : FreeBSD Licence
5 * Description : Memory unit header
6 */
7
8#ifndef DATAPATH_H
9#define DATAPATH_H
10
11#include "sim.h"
12#include "alu.h"
13#include "constant.h"
14#include "imm.h"
15#include "memory.h"
16
17
18typedef enum { NO_COMPONENT, A, B, TEMP, TEMP2, PC, MAR, MDR, CONST,
19 IMM } sx_control_t;
20typedef enum { DATAPATH, MEMORY } mux_control_t;
21typedef enum { READONLY, WRITE } buffer_control_t;
22typedef enum { R_A=1, R_B, R_AB, W_C, R_AxW_C, R_BxW_C,
23 R_ABxW_C } register_control_t;
24
25/* XXX: Not that effient, might be the use of bitfields */
26typedef struct {
27 sx_control_t s1;
28 sx_control_t s2;
29 mux_control_t mux;
30 const_control_t constant;
31 imm_control_t imm;
32 alu_control_t alu_unit;
33 mem_control_t memory;
34 buffer_control_t a;
35 buffer_control_t b;
36 buffer_control_t c;
37 buffer_control_t temp;
38 buffer_control_t temp2;
39 buffer_control_t pc;
40 buffer_control_t mar;
41 buffer_control_t mdr;
42 buffer_control_t ir;
43 register_control_t reg;
44 address_t register_address_a;
45 address_t register_address_b;
46 address_t register_address_c;
47} control_t;
48
49word a;
50word b;
51word c;
52word temp;
53word temp2;
54word pc;
55word mar;
56word mdr;
57word ir;
58word imm;
59word constant;
60
61word reg[32];
62word select_sx(const sx_control_t control);
63void update_state(control_t control);
64
65#endif
Note: See TracBrowser for help on using the repository browser.