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Annotation of hatari/src/ide.c, revision 1.1

1.1     ! root        1: /*
        !             2:   Hatari - ide.c
        !             3: 
        !             4:   This file is distributed under the GNU Public License, version 2 or at
        !             5:   your option any later version. Read the file gpl.txt for details.
        !             6: 
        !             7:   This is where we intercept read/writes to/from the IDE controller hardware.
        !             8: */
        !             9: const char Ide_rcsid[] = "Hatari $Id: ide.c,v 1.3 2007/09/09 20:49:58 thothy Exp $";
        !            10: 
        !            11: #include "main.h"
        !            12: #include "configuration.h"
        !            13: #include "ide.h"
        !            14: #include "m68000.h"
        !            15: #include "stMemory.h"
        !            16: #include "sysdeps.h"
        !            17: 
        !            18: 
        !            19: #define IDE_DEBUG 0
        !            20: 
        !            21: #if IDE_DEBUG
        !            22: #define Dprintf(a) printf a
        !            23: #else
        !            24: #define Dprintf(a)
        !            25: #endif
        !            26: 
        !            27: 
        !            28: /*-----------------------------------------------------------------------*/
        !            29: /**
        !            30:  * Handle byte read access from IDE IO memory.
        !            31:  */
        !            32: uae_u32 Ide_Mem_bget(uaecptr addr)
        !            33: {
        !            34:        Dprintf(("IdeMem_bget($%x)\n", addr));
        !            35: 
        !            36:        addr &= 0x00ffffff;                           /* Use a 24 bit address */
        !            37: 
        !            38:        if (addr >= 0xf00040 || !ConfigureParams.HardDisk.bUseIdeHardDiskImage)
        !            39:        {
        !            40:                /* invalid memory addressing --> bus error */
        !            41:                M68000_BusError(addr, 1);
        !            42:                return -1;
        !            43:        }
        !            44: 
        !            45:        return STRam[addr];
        !            46: }
        !            47: 
        !            48: 
        !            49: /*-----------------------------------------------------------------------*/
        !            50: /**
        !            51:  * Handle word read access from IDE IO memory.
        !            52:  */
        !            53: uae_u32 Ide_Mem_wget(uaecptr addr)
        !            54: {
        !            55:        Dprintf(("IdeMem_wget($%x)\n", addr));
        !            56: 
        !            57:        addr &= 0x00ffffff;                           /* Use a 24 bit address */
        !            58: 
        !            59:        if (addr >= 0xf00040 || !ConfigureParams.HardDisk.bUseIdeHardDiskImage)
        !            60:        {
        !            61:                /* invalid memory addressing --> bus error */
        !            62:                M68000_BusError(addr, 1);
        !            63:                //fprintf(stderr, "Illegal IDE IO memory access: IdeMem_wget($%x)\n", addr);
        !            64:                return -1;
        !            65:        }
        !            66: 
        !            67:        return STMemory_ReadWord(addr);
        !            68: }
        !            69: 
        !            70: 
        !            71: /*-----------------------------------------------------------------------*/
        !            72: /**
        !            73:  * Handle long-word read access from IDE IO memory.
        !            74:  */
        !            75: uae_u32 Ide_Mem_lget(uaecptr addr)
        !            76: {
        !            77:        Dprintf(("IdeMem_lget($%x)\n", addr));
        !            78: 
        !            79:        addr &= 0x00ffffff;                           /* Use a 24 bit address */
        !            80: 
        !            81:        if (addr >= 0xf00040 || !ConfigureParams.HardDisk.bUseIdeHardDiskImage)
        !            82:        {
        !            83:                /* invalid memory addressing --> bus error */
        !            84:                M68000_BusError(addr, 1);
        !            85:                //fprintf(stderr, "Illegal IDE IO memory access: IdeMem_lget($%x)\n", addr);
        !            86:                return -1;
        !            87:        }
        !            88: 
        !            89:        return STMemory_ReadLong(addr);
        !            90: }
        !            91: 
        !            92: 
        !            93: /*-----------------------------------------------------------------------*/
        !            94: /**
        !            95:  * Handle byte write access to IDE IO memory.
        !            96:  */
        !            97: void Ide_Mem_bput(uaecptr addr, uae_u32 val)
        !            98: {
        !            99:        Dprintf(("IdeMem_bput($%x, $%x)\n", addr, val));
        !           100: 
        !           101:        addr &= 0x00ffffff;                           /* Use a 24 bit address */
        !           102: 
        !           103:        if (addr >= 0xf00040 || !ConfigureParams.HardDisk.bUseIdeHardDiskImage)
        !           104:        {
        !           105:                /* invalid memory addressing --> bus error */
        !           106:                M68000_BusError(addr, 0);
        !           107:                //fprintf(stderr, "Illegal IDE IO memory access: IdeMem_bput($%x)\n", addr);
        !           108:                return;
        !           109:        }
        !           110: 
        !           111:        STMemory_WriteByte(addr, val);
        !           112: }
        !           113: 
        !           114: 
        !           115: /*-----------------------------------------------------------------------*/
        !           116: /**
        !           117:  * Handle word write access to IDE IO memory.
        !           118:  */
        !           119: void Ide_Mem_wput(uaecptr addr, uae_u32 val)
        !           120: {
        !           121:        Dprintf(("IdeMem_wput($%x, $%x)\n", addr, val));
        !           122: 
        !           123:        addr &= 0x00ffffff;                           /* Use a 24 bit address */
        !           124: 
        !           125:        if (addr >= 0xf00040 || !ConfigureParams.HardDisk.bUseIdeHardDiskImage)
        !           126:        {
        !           127:                /* invalid memory addressing --> bus error */
        !           128:                M68000_BusError(addr, 0);
        !           129:                //fprintf(stderr, "Illegal IDE IO memory access: IdeMem_wput($%x)\n", addr);
        !           130:                return;
        !           131:        }
        !           132: 
        !           133:        STMemory_WriteWord(addr, val);
        !           134: }
        !           135: 
        !           136: 
        !           137: /*-----------------------------------------------------------------------*/
        !           138: /**
        !           139:  * Handle long-word write access to IDE IO memory.
        !           140:  */
        !           141: void Ide_Mem_lput(uaecptr addr, uae_u32 val)
        !           142: {
        !           143:        Dprintf(("IdeMem_lput($%x, $%x)\n", addr, val));
        !           144: 
        !           145:        addr &= 0x00ffffff;                           /* Use a 24 bit address */
        !           146: 
        !           147:        if (addr >= 0xf00040 || !ConfigureParams.HardDisk.bUseIdeHardDiskImage)
        !           148:        {
        !           149:                /* invalid memory addressing --> bus error */
        !           150:                M68000_BusError(addr, 0);
        !           151:                //fprintf(stderr, "Illegal IDE IO memory access: IdeMem_lput($%x)\n", addr);
        !           152:                return;
        !           153:        }
        !           154: 
        !           155:        STMemory_WriteLong(addr, val);
        !           156: }

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