173 lines
5.5 KiB
C
173 lines
5.5 KiB
C
/*****************************************************************************/
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/* */
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/* stdio.c */
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/* */
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/* STDIO plugin for the sim65 6502 simulator */
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/* */
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/* */
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/* */
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/* (C) 2002-2003 Ullrich von Bassewitz */
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/* Römerstrasse 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.org */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/* common */
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#include "attrib.h"
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/* sim65 */
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#include "chipif.h"
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/*****************************************************************************/
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/* Forwards */
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/*****************************************************************************/
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static int InitChip (const struct SimData* Data);
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/* Initialize the chip, return an error code */
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static void* CreateInstance (unsigned Addr, unsigned Range, void* CfgInfo);
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/* Create a new chip instance */
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static void DestroyInstance (void* Data);
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/* Destroy a chip instance */
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static void Write (void* Data, unsigned Offs, unsigned char Val);
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/* Write user data */
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static unsigned char Read (void* Data, unsigned Offs);
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/* Read user data */
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* Control data passed to the main program */
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static const struct ChipData CData[1] = {
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{
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"STDIO", /* Name of the chip */
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CHIPDATA_TYPE_CHIP, /* Type of the chip */
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CHIPDATA_VER_MAJOR, /* Version information */
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CHIPDATA_VER_MINOR,
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/* -- Exported functions -- */
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InitChip,
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CreateInstance,
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DestroyInstance,
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Write,
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Write,
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Read,
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Read
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}
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};
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/* The SimData pointer we get when InitChip is called */
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static const SimData* Sim;
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/*****************************************************************************/
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/* Exported function */
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/*****************************************************************************/
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int GetChipData (const ChipData** Data, unsigned* Count)
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{
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/* Pass the control structure to the caller */
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*Data = CData;
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*Count = sizeof (CData) / sizeof (CData[0]);
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/* Call was successful */
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return 0;
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}
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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static int InitChip (const struct SimData* Data)
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/* Initialize the chip, return an error code */
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{
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/* Remember the pointer */
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Sim = Data;
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/* Always successful */
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return 0;
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}
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static void* CreateInstance (unsigned Addr, unsigned Range, void* CfgInfo)
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/* Initialize a new chip instance */
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{
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/* We don't need any instance data */
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return 0;
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}
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static void DestroyInstance (void* Data)
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/* Destroy a chip instance */
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{
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}
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static void Write (void* Data attribute ((unused)),
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unsigned Offs attribute ((unused)),
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unsigned char Val)
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/* Write user data */
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{
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putchar (Val);
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}
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static unsigned char Read (void* Data attribute ((unused)),
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unsigned Offs attribute ((unused)))
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/* Read user data */
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{
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/* Read a character and return the value */
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return getchar ();
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}
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