buf_byte.c File Reference

#include "pdp_11/memory/buf_byte/mem_byte_p.h"
#include "pdp_11/memory/type_func_p.h"
#include <stdio.h>
#include <stdlib.h>

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Functions
void	__byte_write_b (void *, address_byte_t, byte_t)
byte_t	__byte_read_b (void *, address_byte_t)
word_t	__word_read_b (void *, address_word_t)
void	__word_write_b (void *, address_word_t, word_t)
mem_byte_t *	mem_byte_new ()
void	mem_byte_create (mem_byte_t *mem_byte, const size_byte_buffer size)
void	mem_byte_destroy (mem_byte_t *mem_byte)

Function Documentation

__byte_read_b()

byte_t __byte_read_b	(	void *	mem_byte,
		address_byte_t	addr
	)

{
    mem_byte_t *ptr = (mem_byte_t *) mem_byte;
    return *(ptr->buf_b + addr) & 0xFF;
}

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__byte_write_b()

void __byte_write_b	(	void *	mem_byte,
		address_byte_t	addr,
		byte_t	data
	)

{
    mem_byte_t *ptr      = (mem_byte_t *) mem_byte;
    *(ptr->buf_b + addr) = data & 0xFF;
}

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__word_read_b()

word_t __word_read_b	(	void *	mem_byte,
		address_word_t	addr
	)

{
    mem_byte_t *ptr = (mem_byte_t *) mem_byte;
 
    return ((*(ptr->buf_b + addr) & 0xFF) | *(ptr->buf_b + addr + 1) << 8);
}

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__word_write_b()

void __word_write_b	(	void *	mem_byte,
		address_word_t	addr,
		word_t	data
	)

{
    mem_byte_t *ptr = (mem_byte_t *) mem_byte;
 
    *(ptr->buf_b + addr)     = data & 0xFF;
    *(ptr->buf_b + addr + 1) = (data >> 8) & 0xFF;
}

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mem_byte_create()

void mem_byte_create	(	mem_byte_t *	mem_byte,
		const size_byte_buffer	size
	)

{
    mem_byte->buf_b  = (byte_t *) calloc(size, sizeof(byte_t));
    mem_byte->size_b = size;
 
    mem_byte->read_byte  = __byte_read_b;
    mem_byte->write_byte = __byte_write_b;
    mem_byte->read_word  = __word_read_b;
    mem_byte->write_word = __word_write_b;
}

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mem_byte_destroy()

void mem_byte_destroy

(

mem_byte_t *

mem_byte

)

{
    free(mem_byte->buf_b);
}

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mem_byte_new()

mem_byte_t * mem_byte_new

(

)

{
    return (mem_byte_t *) malloc(sizeof(mem_byte_t));
}

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