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Last change
on this file since 258 was 2, checked in by Rick van der Zwet, 15 years ago |
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Initial import of data of old repository ('data') worth keeping (e.g. tracking
means of URL access statistics)
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Property svn:executable
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| 1 | /* Author : Rick van der Zwet
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| 2 | * S-number : 0433373
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| 3 | * Version : $Id: datapath.h 366 2007-12-04 18:29:07Z rick $
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| 4 | * Copyright : FreeBSD Licence
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| 5 | * Description : Memory unit header
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| 6 | */
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| 7 |
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| 8 | #ifndef DATAPATH_H
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| 9 | #define DATAPATH_H
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| 10 |
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| 11 | #include "sim.h"
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| 12 | #include "alu.h"
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| 13 | #include "constant.h"
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| 14 | #include "imm.h"
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| 15 | #include "memory.h"
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| 16 |
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| 17 |
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| 18 | typedef enum { NO_COMPONENT, A, B, TEMP, TEMP2, PC, MAR, MDR, CONST,
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| 19 | IMM } sx_control_t;
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| 20 | typedef enum { DATAPATH, MEMORY } mux_control_t;
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| 21 | typedef enum { READONLY, WRITE } buffer_control_t;
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| 22 | typedef enum { R_A=1, R_B, R_AB, W_C, R_AxW_C, R_BxW_C,
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| 23 | R_ABxW_C } register_control_t;
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| 24 |
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| 25 | /* XXX: Not that effient, might be the use of bitfields */
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| 26 | typedef struct {
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| 27 | sx_control_t s1;
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| 28 | sx_control_t s2;
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| 29 | mux_control_t mux;
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| 30 | const_control_t constant;
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| 31 | imm_control_t imm;
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| 32 | alu_control_t alu_unit;
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| 33 | mem_control_t memory;
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| 34 | buffer_control_t a;
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| 35 | buffer_control_t b;
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| 36 | buffer_control_t c;
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| 37 | buffer_control_t temp;
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| 38 | buffer_control_t temp2;
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| 39 | buffer_control_t pc;
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| 40 | buffer_control_t mar;
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| 41 | buffer_control_t mdr;
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| 42 | buffer_control_t ir;
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| 43 | register_control_t reg;
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| 44 | address_t register_address_a;
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| 45 | address_t register_address_b;
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| 46 | address_t register_address_c;
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| 47 | } control_t;
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| 48 |
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| 49 | word a;
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| 50 | word b;
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| 51 | word c;
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| 52 | word temp;
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| 53 | word temp2;
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| 54 | word pc;
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| 55 | word mar;
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| 56 | word mdr;
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| 57 | word ir;
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| 58 | word imm;
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| 59 | word constant;
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| 60 |
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| 61 | word reg[32];
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| 62 | word select_sx(const sx_control_t control);
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| 63 | void update_state(control_t control);
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| 64 |
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| 65 | #endif
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