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mpw/cpu/fmem.c
Kelvin Sherlock ea246894be fellow cpu code
2013-02-05 23:11:41 -05:00

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/* @(#) $Id: FMEM.C,v 1.17 2013/01/13 18:31:09 peschau Exp $ */
/*=========================================================================*/
/* Fellow */
/* Virtual Memory System */
/* */
/* Authors: Petter Schau, Torsten Enderling */
/* */
/* This program is free software; you can redistribute it and/or modify */
/* it under the terms of the GNU General Public License as published by */
/* the Free Software Foundation; either version 2, or (at your option) */
/* any later version. */
/* */
/* This program is distributed in the hope that it will be useful, */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
/* GNU General Public License for more details. */
/* */
/* You should have received a copy of the GNU General Public License */
/* along with this program; if not, write to the Free Software Foundation, */
/* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*=========================================================================*/
#include "defs.h"
#include "fellow.h"
#include "draw.h"
#include "CpuModule.h"
#include "CpuIntegration.h"
#include "fhfile.h"
#include "graph.h"
#include "floppy.h"
#include "copper.h"
#include "cia.h"
#include "blit.h"
#include "fmem.h"
#include "fswrap.h"
#include "wgui.h"
#ifdef WIN32
#include <tchar.h>
#endif
/*============================================================================*/
/* Holds configuration for memory */
/*============================================================================*/
ULO memory_chipsize;
ULO memory_fastsize;
ULO memory_slowsize;
BOOLE memory_useautoconfig;
BOOLE memory_address32bit;
STR memory_kickimage[CFG_FILENAME_LENGTH];
STR memory_key[256];
/*============================================================================*/
/* Holds actual memory */
/*============================================================================*/
UBY memory_chip[0x200000 + 32];
UBY memory_slow[0x1c0000 + 32];
UBY memory_kick[0x080000 + 32];
UBY *memory_fast = NULL;
ULO memory_fast_baseaddress;
ULO memory_fastallocatedsize;
/*============================================================================*/
/* Autoconfig data */
/*============================================================================*/
#define EMEM_MAXARDS 4
UBY memory_emem[0x10000];
memoryEmemCardInitFunc memory_ememard_initfunc[EMEM_MAXARDS];
memoryEmemCardMapFunc memory_ememard_mapfunc[EMEM_MAXARDS];
ULO memory_ememardcount; /* Number of cards */
ULO memory_ememards_finishedcount; /* Current card */
/*============================================================================*/
/* Device memory data */
/*============================================================================*/
#define MEMORY_DMEM_OFFSET 0xf40000
UBY memory_dmem[65536];
ULO memory_dmemcounter;
/*============================================================================*/
/* Additional Kickstart data */
/*============================================================================*/
ULO memory_initial_PC;
ULO memory_initial_SP;
BOOLE memory_kickimage_none;
ULO memory_kickimage_size;
ULO memory_kickimage_version;
STR memory_kickimage_versionstr[80];
ULO memory_kickimage_basebank;
const STR *memory_kickimage_versionstrings[14] = {
"Kickstart, version information unavailable",
"Kickstart Pre-V1.0",
"Kickstart V1.0",
"Kickstart V1.1 (NTSC)",
"Kickstart V1.1 (PAL)",
"Kickstart V1.2",
"Kickstart V1.3",
"Kickstart V1.3",
"Kickstart V2.0",
"Kickstart V2.04",
"Kickstart V2.1",
"Kickstart V3.0",
"Kickstart V3.1",
"Kickstart Post-V3.1"};
void memoryKickSettingsClear(void);
/*============================================================================*/
/* Illegal read / write fault information */
/*============================================================================*/
BOOLE memory_fault_read; /* TRUE - read / FALSE - write */
ULO memory_fault_address;
/*============================================================================*/
/* Some run-time scratch variables */
/*============================================================================*/
ULO memory_mystery_value; /* Pattern needed in an unknown bank (hmm) */
ULO memory_noise[2]; /* Returns alternating bitpattern in */
ULO memory_noisecounter; /* unused IO-registers to keep apps from hanging */
ULO memory_undefined_io_writecounter = 0;
void memoryWriteByteToPointer(UBY data, UBY *address)
{
address[0] = data;
}
void memoryWriteWordToPointer(UWO data, UBY *address)
{
address[0] = (UBY) (data >> 8);
address[1] = (UBY) data;
}
void memoryWriteLongToPointer(ULO data, UBY *address)
{
address[0] = (UBY) (data >> 24);
address[1] = (UBY) (data >> 16);
address[2] = (UBY) (data >> 8);
address[3] = (UBY) data;
}
/*----------------------------
Chip read register functions
----------------------------*/
UWO rintreqr(ULO address)
{
return (UWO) intreq;
}
/* SERDATR
$dff018 */
UWO rserdatr(ULO address)
{
return 0x2000;
}
/* INTENAR
$dff01c */
UWO rintenar(ULO address)
{
return (UWO) intenar;
}
// To simulate noise, return 0 and -1 every second time.
// Why? Bugged demos test write-only registers for various bit-values
// and to break out of loops, both 0 and 1 values must be returned.
UWO rdefault(ULO address)
{
memory_noisecounter++;
return (UWO) memory_noise[memory_noisecounter & 0x1];
}
void wdefault(UWO data, ULO address)
{
memory_undefined_io_writecounter++;
}
/*
======
INTREQ
======
$dff09c - Read from $dff01e
Paula
*/
void wintreq(UWO data, ULO address)
{
if (data & 0x8000)
{
intreq = intreq | (data & 0x7fff);
}
else
{
intreq = intreq & ~(data & 0x7fff);
ciaUpdateIRQ(0);
ciaUpdateIRQ(1);
}
cpuIntegrationCheckPendingInterrupts();
}
/*
======
INTENA
======
$dff09a - Read from $dff01c
Paula
*/
// If master bit is off, then INTENA is 0, else INTENA = INTENAR
// The master bit can not be read, the memory test in the kickstart
// depends on this.
void wintena(UWO data, ULO address)
{
if (data & 0x8000)
{
intenar = intenar | (data & 0x7fff);
}
else
{
intenar = intenar & ~(data & 0x7fff);
}
if ((intenar & 0x00004000) == 0x00004000)
{
// Interrupts are enabled, check if any has not been serviced
intena = intenar;
cpuIntegrationCheckPendingInterrupts();
}
else
{
intena = 0;
}
}
/*============================================================================*/
/* Table of register read/write functions */
/*============================================================================*/
memoryIoReadFunc memory_iobank_read[257]; // Account for long writes to the last
memoryIoWriteFunc memory_iobank_write[257]; // word
/*============================================================================*/
/* Memory mapping tables */
/*============================================================================*/
memoryReadByteFunc memory_bank_readbyte[65536];
memoryReadWordFunc memory_bank_readword[65536];
memoryReadLongFunc memory_bank_readlong[65536];
memoryWriteByteFunc memory_bank_writebyte[65536];
memoryWriteWordFunc memory_bank_writeword[65536];
memoryWriteLongFunc memory_bank_writelong[65536];
UBY *memory_bank_pointer[65536]; /* Used by the filesystem */
BOOLE memory_bank_pointer_can_write[65536];
/* Variables that correspond to various registers */
ULO intenar, intena, intreq;
/*============================================================================*/
/* Memory bank mapping functions */
/*============================================================================*/
/*============================================================================*/
/* Set read and write stubs for a bank, as well as a direct pointer to */
/* its memory. NULL pointer is passed when the memory must always be */
/* read through the stubs, like in a bank of regsters where writing */
/* or reading the value generates side-effects. */
/* Datadirect is TRUE when data accesses can be made through a pointer */
/*============================================================================*/
void memoryBankSet(memoryReadByteFunc rb,
memoryReadWordFunc rw,
memoryReadLongFunc rl,
memoryWriteByteFunc wb,
memoryWriteWordFunc ww,
memoryWriteLongFunc wl,
UBY *basep,
ULO bank,
ULO basebank,
BOOLE pointer_can_write)
{
ULO i, j;
j = (memoryGetAddress32Bit()) ? 65536 : 256;
for (i = bank; i < 65536; i += j)
{
memory_bank_readbyte[i] = rb;
memory_bank_readword[i] = rw;
memory_bank_readlong[i] = rl;
memory_bank_writebyte[i] = wb;
memory_bank_writeword[i] = ww;
memory_bank_writelong[i] = wl;
memory_bank_pointer_can_write[i] = pointer_can_write;
if (basep != NULL)
{
memory_bank_pointer[i] = basep - (basebank<<16);
}
else
{
memory_bank_pointer[i] = NULL;
}
basebank += j;
}
}
/*============================================================================*/
/* Clear one bank data to safe "do-nothing" values */
/*============================================================================*/
/* Unmapped memory interface */
UBY memoryUnmappedReadByte(ULO address)
{
memory_mystery_value = ~memory_mystery_value;
return (UBY) memory_mystery_value;
}
UWO memoryUnmappedReadWord(ULO address)
{
return 0x6100;
}
ULO memoryUnmappedReadLong(ULO address)
{
return 0x61006100;
}
void memoryUnmappedWriteByte(UBY data, ULO address)
{
// NOP
}
void memoryUnmappedWriteWord(UWO data, ULO address)
{
// NOP
}
void memoryUnmappedWriteLong(ULO data, ULO address)
{
// NOP
}
void memoryBankClear(ULO bank)
{
memoryBankSet(memoryUnmappedReadByte,
memoryUnmappedReadWord,
memoryUnmappedReadLong,
memoryUnmappedWriteByte,
memoryUnmappedWriteWord,
memoryUnmappedWriteLong,
NULL,
bank,
0,
FALSE);
}
/*============================================================================*/
/* Clear all bank data to safe "do-nothing" values */
/*============================================================================*/
void memoryBankClearAll(void)
{
ULO bank;
ULO hilim = (memoryGetAddress32Bit()) ? 65536 : 256;
for (bank = 0; bank < hilim; bank++)
memoryBankClear(bank);
}
/*============================================================================*/
/* Expansion cards autoconfig */
/*============================================================================*/
/*============================================================================*/
/* Clear the expansion config bank */
/*============================================================================*/
void memoryEmemClear(void)
{
memset(memory_emem, 0xff, 65536);
}
/*============================================================================*/
/* Add card to table */
/*============================================================================*/
void memoryEmemCardAdd(memoryEmemCardInitFunc cardinit,
memoryEmemCardMapFunc cardmap)
{
if (memory_ememardcount < EMEM_MAXARDS)
{
memory_ememard_initfunc[memory_ememardcount] = cardinit;
memory_ememard_mapfunc[memory_ememardcount] = cardmap;
memory_ememardcount++;
}
}
/*============================================================================*/
/* Advance the card pointer */
/*============================================================================*/
void memoryEmemCardNext(void)
{
memory_ememards_finishedcount++;
}
/*============================================================================*/
/* Init the current card */
/*============================================================================*/
void memoryEmemCardInit(void)
{
memoryEmemClear();
if (memory_ememards_finishedcount != memory_ememardcount)
memory_ememard_initfunc[memory_ememards_finishedcount]();
}
/*============================================================================*/
/* Map this card */
/* Mapping is bank number set by AmigaOS */
/*============================================================================*/
void memoryEmemCardMap(ULO mapping)
{
if (memory_ememards_finishedcount == memory_ememardcount)
memoryEmemClear();
else
memory_ememard_mapfunc[memory_ememards_finishedcount](mapping);
}
/*============================================================================*/
/* Reset card setup */
/*============================================================================*/
void memoryEmemCardsReset(void)
{
memory_ememards_finishedcount = 0;
memoryEmemCardInit();
}
/*============================================================================*/
/* Clear the card table */
/*============================================================================*/
void memoryEmemCardsRemove(void)
{
memory_ememardcount = memory_ememards_finishedcount = 0;
}
/*============================================================================*/
/* Set a byte in autoconfig space, for initfunc routines */
/* so they can make their configuration visible */
/*============================================================================*/
void memoryEmemSet(ULO index, ULO value)
{
index &= 0xffff;
switch (index)
{
case 0:
case 2:
case 0x40:
case 0x42:
memory_emem[index] = (UBY) (value & 0xf0);
memory_emem[index + 2] = (UBY) ((value & 0xf)<<4);
break;
default:
memory_emem[index] = (UBY) (~(value & 0xf0));
memory_emem[index + 2] = (UBY) (~((value & 0xf)<<4));
break;
}
}
/*============================================================================*/
/* Copy data into emem space */
/*============================================================================*/
void memoryEmemMirror(ULO emem_offset, UBY *src, ULO size)
{
memcpy(memory_emem + emem_offset, src, size);
}
/*============================================================================*/
/* Read/Write stubs for autoconfig memory */
/*============================================================================*/
UBY memoryEmemReadByte(ULO address)
{
UBY *p = memory_emem + (address & 0xffff);
return memoryReadByteFromPointer(p);
}
UWO memoryEmemReadWord(ULO address)
{
UBY *p = memory_emem + (address & 0xffff);
return memoryReadWordFromPointer(p);
}
ULO memoryEmemReadLong(ULO address)
{
UBY *p = memory_emem + (address & 0xffff);
return memoryReadLongFromPointer(p);
}
void memoryEmemWriteByte(UBY data, ULO address)
{
static ULO mapping;
switch (address & 0xffff)
{
case 0x30:
case 0x32:
mapping = data = 0;
case 0x48:
mapping = (mapping & 0xff) | (((ULO)data) << 8);
memoryEmemCardMap(mapping);
memoryEmemCardNext();
memoryEmemCardInit();
break;
case 0x4a:
mapping = (mapping & 0xff00) | ((ULO)data);
break;
case 0x4c:
memoryEmemCardNext();
memoryEmemCardInit();
break;
}
}
void memoryEmemWriteWord(UWO data, ULO address)
{
}
void memoryEmemWriteLong(ULO data, ULO address)
{
}
/*===========================================================================*/
/* Map the autoconfig memory bank into memory */
/*===========================================================================*/
void memoryEmemMap(void)
{
if (memoryGetKickImageBaseBank() >= 0xf8)
memoryBankSet(memoryEmemReadByte,
memoryEmemReadWord,
memoryEmemReadLong,
memoryEmemWriteByte,
memoryEmemWriteWord,
memoryEmemWriteLong,
NULL,
0xe8,
0xe8,
FALSE);
}
/*===================*/
/* End of autoconfig */
/*===================*/
/*============================================================================*/
/* dmem is the data area used by the hardfile device to communicate info */
/* about itself with the Amiga */
/*============================================================================*/
/*============================================================================*/
/* Functions to set data in dmem by the native device drivers */
/*============================================================================*/
UBY memoryDmemReadByte(ULO address)
{
UBY *p = memory_dmem + (address & 0xffff);
return memoryReadByteFromPointer(p);
}
UWO memoryDmemReadWord(ULO address)
{
UBY *p = memory_dmem + (address & 0xffff);
return memoryReadWordFromPointer(p);
}
ULO memoryDmemReadLong(ULO address)
{
UBY *p = memory_dmem + (address & 0xffff);
return memoryReadLongFromPointer(p);
}
void memoryDmemWriteByte(UBY data, ULO address)
{
// NOP
}
void memoryDmemWriteWord(UWO data, ULO address)
{
// NOP
}
/*============================================================================*/
/* Writing a long to $f40000 runs a native function */
/*============================================================================*/
void memoryDmemWriteLong(ULO data, ULO address)
{
if ((address & 0xffffff) == 0xf40000)
{
switch (data>>16)
{
case 0x0001: fhfileDo(data);
break;
default: break;
}
}
}
void memoryDmemClear(void)
{
memset(memory_dmem, 0, 4096);
}
void memoryDmemSetCounter(ULO c)
{
memory_dmemcounter = c;
}
ULO memoryDmemGetCounter(void)
{
return memory_dmemcounter + MEMORY_DMEM_OFFSET;
}
void memoryDmemSetString(STR *st)
{
strcpy((STR *) (memory_dmem + memory_dmemcounter), st);
memory_dmemcounter += (ULO) strlen(st) + 1;
if (memory_dmemcounter & 1) memory_dmemcounter++;
}
void memoryDmemSetByte(UBY data)
{
memory_dmem[memory_dmemcounter++] = data;
}
void memoryDmemSetWord(UWO data)
{
memoryWriteWordToPointer(data, memory_dmem + memory_dmemcounter);
memory_dmemcounter += 2;
}
void memoryDmemSetLong(ULO data)
{
memoryWriteLongToPointer(data, memory_dmem + memory_dmemcounter);
memory_dmemcounter += 4;
}
void memoryDmemSetLongNoCounter(ULO data, ULO offset)
{
memoryWriteLongToPointer(data, memory_dmem + offset);
}
void memoryDmemMap(void)
{
ULO bank = 0xf40000>>16;
if (memory_useautoconfig && (memory_kickimage_basebank >= 0xf8))
memoryBankSet(memoryDmemReadByte,
memoryDmemReadWord,
memoryDmemReadLong,
memoryDmemWriteByte,
memoryDmemWriteWord,
memoryDmemWriteLong,
memory_dmem,
bank,
bank,
FALSE);
}
/*============================================================================*/
/* Converts an address to a direct pointer to memory. Used by hardfile device */
/*============================================================================*/
UBY *memoryAddressToPtr(ULO address)
{
UBY *result;
if ((result = memory_bank_pointer[address>>16]) != NULL)
result += address;
return result;
}
/*============================================================================*/
/* Chip memory handling */
/*============================================================================*/
UBY memoryChipReadByte(ULO address)
{
UBY *p = memory_chip + (address & 0x1fffff);
return memoryReadByteFromPointer(p);
}
UWO memoryChipReadWord(ULO address)
{
UBY *p = memory_chip + (address & 0x1fffff);
return memoryReadWordFromPointer(p);
}
ULO memoryChipReadLong(ULO address)
{
UBY *p = memory_chip + (address & 0x1fffff);
return memoryReadLongFromPointer(p);
}
void memoryChipWriteByte(UBY data, ULO address)
{
UBY *p = memory_chip + (address & 0x1fffff);
memoryWriteByteToPointer(data, p);
}
void memoryChipWriteWord(UWO data, ULO address)
{
UBY *p = memory_chip + (address & 0x1fffff);
memoryWriteWordToPointer(data, p);
}
void memoryChipWriteLong(ULO data, ULO address)
{
UBY *p = memory_chip + (address & 0x1fffff);
memoryWriteLongToPointer(data, p);
}
void memoryChipClear(void)
{
memset(memory_chip, 0, memoryGetChipSize());
}
UBY memoryOverlayReadByte(ULO address)
{
UBY *p = memory_kick + (address & 0xffffff);
return memoryReadByteFromPointer(p);
}
UWO memoryOverlayReadWord(ULO address)
{
UBY *p = memory_kick + (address & 0xffffff);
return memoryReadWordFromPointer(p);
}
ULO memoryOverlayReadLong(ULO address)
{
UBY *p = memory_kick + (address & 0xffffff);
return memoryReadLongFromPointer(p);
}
void memoryOverlayWriteByte(UBY data, ULO address)
{
// NOP
}
void memoryOverlayWriteWord(UWO data, ULO address)
{
// NOP
}
void memoryOverlayWriteLong(ULO data, ULO address)
{
// NOP
}
void memoryChipMap(BOOLE overlay)
{
ULO bank, lastbank;
if (overlay)
{
for (bank = 0; bank < 8; bank++)
memoryBankSet(memoryOverlayReadByte,
memoryOverlayReadWord,
memoryOverlayReadLong,
memoryOverlayWriteByte,
memoryOverlayWriteWord,
memoryOverlayWriteLong,
memory_kick,
bank,
0,
FALSE);
}
if (memoryGetChipSize() > 0x200000) lastbank = 0x200000>>16;
else lastbank = memoryGetChipSize()>>16;
for (bank = (overlay) ? 8 : 0; bank < lastbank; bank++)
memoryBankSet(memoryChipReadByte,
memoryChipReadWord,
memoryChipReadLong,
memoryChipWriteByte,
memoryChipWriteWord,
memoryChipWriteLong,
memory_chip,
bank,
0,
TRUE);
}
/*============================================================================*/
/* Fast memory handling */
/*============================================================================*/
UBY memoryFastReadByte(ULO address)
{
UBY *p = memory_fast + ((address & 0xffffff) - memory_fast_baseaddress);
return memoryReadByteFromPointer(p);
}
UWO memoryFastReadWord(ULO address)
{
UBY *p = memory_fast + ((address & 0xffffff) - memory_fast_baseaddress);
return memoryReadWordFromPointer(p);
}
ULO memoryFastReadLong(ULO address)
{
UBY *p = memory_fast + ((address & 0xffffff) - memory_fast_baseaddress);
return memoryReadLongFromPointer(p);
}
void memoryFastWriteByte(UBY data, ULO address)
{
UBY *p = memory_fast + ((address & 0xffffff) - memory_fast_baseaddress);
memoryWriteByteToPointer(data, p);
}
void memoryFastWriteWord(UWO data, ULO address)
{
UBY *p = memory_fast + ((address & 0xffffff) - memory_fast_baseaddress);
memoryWriteWordToPointer(data, p);
}
void memoryFastWriteLong(ULO data, ULO address)
{
UBY *p = memory_fast + ((address & 0xffffff) - memory_fast_baseaddress);
memoryWriteLongToPointer(data, p);
}
/*============================================================================*/
/* Set up autoconfig values for fastmem card */
/*============================================================================*/
void memoryFastCardInit(void)
{
if (memoryGetFastSize() == 0x100000) memoryEmemSet(0, 0xe5);
else if (memoryGetFastSize() == 0x200000) memoryEmemSet(0, 0xe6);
else if (memoryGetFastSize() == 0x400000) memoryEmemSet(0, 0xe7);
else if (memoryGetFastSize() == 0x800000) memoryEmemSet(0, 0xe0);
memoryEmemSet(8, 128);
memoryEmemSet(4, 1);
memoryEmemSet(0x10, 2011>>8);
memoryEmemSet(0x14, 2011 & 0xf);
memoryEmemSet(0x18, 0);
memoryEmemSet(0x1c, 0);
memoryEmemSet(0x20, 0);
memoryEmemSet(0x24, 1);
memoryEmemSet(0x28, 0);
memoryEmemSet(0x2c, 0);
memoryEmemSet(0x40, 0);
}
/*============================================================================*/
/* Allocate memory for the fast card memory */
/*============================================================================*/
void memoryFastClear(void)
{
if (memory_fast != NULL)
memset(memory_fast, 0, memoryGetFastSize());
}
void memoryFastFree(void)
{
if (memory_fast != NULL)
{
free(memory_fast);
memory_fast = NULL;
memory_fast_baseaddress = 0;
memorySetFastAllocatedSize(0);
}
}
void memoryFastAllocate(void)
{
if (memoryGetFastSize() != memoryGetFastAllocatedSize())
{
memoryFastFree();
memory_fast = (UBY *) malloc(memoryGetFastSize());
if (memory_fast == NULL) memorySetFastSize(0);
else memoryFastClear();
memorySetFastAllocatedSize((memory_fast == NULL) ? 0 : memoryGetFastSize());
}
}
/*============================================================================*/
/* Map fastcard. */
/*============================================================================*/
void memoryFastCardMap(ULO mapping)
{
ULO bank, lastbank;
memory_fast_baseaddress = (mapping >> 8) << 16;
if (memoryGetFastSize() > 0x800000) lastbank = 0xa00000>>16;
else lastbank = (memory_fast_baseaddress + memoryGetFastSize())>>16;
for (bank = memory_fast_baseaddress>>16; bank < lastbank; bank++)
memoryBankSet(memoryFastReadByte,
memoryFastReadWord,
memoryFastReadLong,
memoryFastWriteByte,
memoryFastWriteWord,
memoryFastWriteLong,
memory_fast,
bank,
memory_fast_baseaddress>>16,
TRUE);
memset(memory_fast, 0, memoryGetFastSize());
}
void memoryFastCardAdd(void)
{
if (memoryGetFastSize() != 0)
memoryEmemCardAdd(memoryFastCardInit, memoryFastCardMap);
}
/*============================================================================*/
/* Slow memory handling */
/*============================================================================*/
UBY memorySlowReadByte(ULO address)
{
UBY *p = memory_slow + ((address & 0xffffff) - 0xc00000);
return memoryReadByteFromPointer(p);
}
UWO memorySlowReadWord(ULO address)
{
UBY *p = memory_slow + ((address & 0xffffff) - 0xc00000);
return memoryReadWordFromPointer(p);
}
ULO memorySlowReadLong(ULO address)
{
UBY *p = memory_slow + ((address & 0xffffff) - 0xc00000);
return memoryReadLongFromPointer(p);
}
void memorySlowWriteByte(UBY data, ULO address)
{
UBY *p = memory_slow + ((address & 0xffffff) - 0xc00000);
memoryWriteByteToPointer(data, p);
}
void memorySlowWriteWord(UWO data, ULO address)
{
UBY *p = memory_slow + ((address & 0xffffff) - 0xc00000);
memoryWriteWordToPointer(data, p);
}
void memorySlowWriteLong(ULO data, ULO address)
{
UBY *p = memory_slow + ((address & 0xffffff) - 0xc00000);
memoryWriteLongToPointer(data, p);
}
void memorySlowClear(void)
{
memset(memory_slow, 0, memoryGetSlowSize());
}
void memorySlowMap(void)
{
ULO bank, lastbank;
if (memoryGetSlowSize() > 0x1c0000) lastbank = 0xdc0000>>16;
else lastbank = (0xc00000 + memoryGetSlowSize())>>16;
for (bank = 0xc00000>>16; bank < lastbank; bank++)
memoryBankSet(memorySlowReadByte,
memorySlowReadWord,
memorySlowReadLong,
memorySlowWriteByte,
memorySlowWriteWord,
memorySlowWriteLong,
memory_slow,
bank,
0xc00000>>16,
TRUE);
}
/*============================================================================*/
/* Probably a disk controller, we need it to pass dummy values to get past */
/* the bootstrap of some Kickstart versions. */
/*============================================================================*/
UBY memoryMysteryReadByte(ULO address)
{
memory_mystery_value = ~memory_mystery_value;
return (UBY) memory_mystery_value;
}
UWO memoryMysteryReadWord(ULO address)
{
memory_mystery_value = ~memory_mystery_value;
return (UWO) memory_mystery_value;
}
ULO memoryMysteryReadLong(ULO address)
{
memory_mystery_value = ~memory_mystery_value;
return memory_mystery_value;
}
void memoryMysteryWriteByte(UBY data, ULO address)
{
// NOP
}
void memoryMysteryWriteWord(UWO data, ULO address)
{
// NOP
}
void memoryMysteryWriteLong(ULO data, ULO address)
{
// NOP
}
void memoryMysteryMap(void)
{
memoryBankSet(memoryMysteryReadByte,
memoryMysteryReadWord,
memoryMysteryReadLong,
memoryMysteryWriteByte,
memoryMysteryWriteWord,
memoryMysteryWriteLong,
NULL,
0xe9,
0,
FALSE);
memoryBankSet(memoryMysteryReadByte,
memoryMysteryReadWord,
memoryMysteryReadLong,
memoryMysteryWriteByte,
memoryMysteryWriteWord,
memoryMysteryWriteLong,
NULL,
0xde,
0,
FALSE);
}
/*============================================================================*/
/* IO Registers */
/*============================================================================*/
UBY memoryIoReadByte(ULO address)
{
ULO adr = address & 0x1fe;
if (address & 0x1)
{ // Odd address
return (UBY) memory_iobank_read[adr >> 1](adr);
}
else
{ // Even address
return (UBY) (memory_iobank_read[adr >> 1](adr) >> 8);
}
}
UWO memoryIoReadWord(ULO address)
{
return memory_iobank_read[(address & 0x1fe) >> 1](address & 0x1fe);
}
ULO memoryIoReadLong(ULO address)
{
ULO adr = address & 0x1fe;
ULO r1 = (ULO)memory_iobank_read[adr >> 1](adr);
ULO r2 = (ULO)memory_iobank_read[(adr + 2) >> 1](adr + 2);
return (r1 << 16) | r2;
}
void memoryIoWriteByte(UBY data, ULO address)
{
ULO adr = address & 0x1fe;
if (address & 0x1)
{ // Odd address
memory_iobank_write[adr >> 1]((UWO) data, adr);
}
else
{ // Even address
memory_iobank_write[adr >> 1](((UWO) data) << 8, adr);
}
}
void memoryIoWriteWord(UWO data, ULO address)
{
ULO adr = address & 0x1fe;
memory_iobank_write[adr >> 1](data, adr);
}
void memoryIoWriteLong(ULO data, ULO address)
{
ULO adr = address & 0x1fe;
memory_iobank_write[adr >> 1]((UWO)(data >> 16), adr);
memory_iobank_write[(adr + 2) >> 1]((UWO)data, adr + 2);
}
void memoryIoMap(void)
{
ULO bank, lastbank;
if (memoryGetSlowSize() > 0x1c0000) lastbank = 0xdc0000>>16;
else lastbank = (0xc00000 + memoryGetSlowSize())>>16;
for (bank = lastbank; bank < 0xe00000>>16; bank++)
memoryBankSet(memoryIoReadByte,
memoryIoReadWord,
memoryIoReadLong,
memoryIoWriteByte,
memoryIoWriteWord,
memoryIoWriteLong,
NULL,
bank,
0,
FALSE);
}
/*===========================================================================*/
/* Initializes one entry in the IO register access table */
/*===========================================================================*/
void memorySetIoReadStub(ULO index, memoryIoReadFunc ioreadfunction)
{
memory_iobank_read[index>>1] = ioreadfunction;
}
void memorySetIoWriteStub(ULO index, memoryIoWriteFunc iowritefunction)
{
memory_iobank_write[index>>1] = iowritefunction;
}
/*===========================================================================*/
/* Clear all IO-register accessors */
/*===========================================================================*/
void memoryIoClear(void)
{
ULO i;
// Array has 257 elements to account for long writes to the last address.
for (i = 0; i <= 512; i += 2) {
memorySetIoReadStub(i, rdefault);
memorySetIoWriteStub(i, wdefault);
}
}
/*============================================================================*/
/* Kickstart handling */
/*============================================================================*/
/*============================================================================*/
/* Map the Kickstart image into Amiga memory */
/*============================================================================*/
UBY memoryKickReadByte(ULO address)
{
UBY *p = memory_kick + ((address & 0xffffff) - 0xf80000);
return memoryReadByteFromPointer(p);
}
UWO memoryKickReadWord(ULO address)
{
UBY *p = memory_kick + ((address & 0xffffff) - 0xf80000);
return memoryReadWordFromPointer(p);
}
ULO memoryKickReadLong(ULO address)
{
UBY *p = memory_kick + ((address & 0xffffff) - 0xf80000);
return memoryReadLongFromPointer(p);
}
void memoryKickWriteByte(UBY data, ULO address)
{
// NOP
}
void memoryKickWriteWord(UWO data, ULO address)
{
// NOP
}
void memoryKickWriteLong(ULO data, ULO address)
{
// NOP
}
void memoryKickMap(void)
{
ULO bank, basebank;
basebank = memory_kickimage_basebank & 0xf8;
for (bank = basebank;
bank < (basebank + 8);
bank++)
memoryBankSet(memoryKickReadByte,
memoryKickReadWord,
memoryKickReadLong,
memoryKickWriteByte,
memoryKickWriteWord,
memoryKickWriteLong,
memory_kick,
bank,
memory_kickimage_basebank,
FALSE);
}
/*============================================================================*/
/* An error occured during loading a kickstart file. Uses GUI to display */
/* an errorstring. */
/*============================================================================*/
void memoryKickError(ULO errorcode, ULO data)
{
static STR error1[80], error2[160], error3[160];
sprintf(error1, "Kickstart file could not be loaded");
sprintf(error2, "%s", memory_kickimage);
error3[0] = '\0';
switch (errorcode)
{
case MEMORY_ROM_ERROR_SIZE:
sprintf(error3,
"Illegal size: %d bytes, size must be either 256K or 512K",
data);
break;
case MEMORY_ROM_ERROR_AMIROM_VERSION:
sprintf(error3, "Unsupported encryption method, version found was %d",
data);
break;
case MEMORY_ROM_ERROR_AMIROM_READ:
sprintf(error3, "Read error in encrypted Kickstart or keyfile");
break;
case MEMORY_ROM_ERROR_KEYFILE:
sprintf(error3, "Unable to access keyfile %s", memory_key);
break;
case MEMORY_ROM_ERROR_EXISTS_NOT:
sprintf(error3, "File does not exist");
break;
case MEMORY_ROM_ERROR_FILE:
sprintf(error3, "File is a directory");
break;
case MEMORY_ROM_ERROR_KICKDISK_NOT:
sprintf(error3, "The ADF-image is not a kickdisk");
break;
case MEMORY_ROM_ERROR_CHECKSUM:
sprintf(error3,
"The Kickstart image has a checksum error, checksum is %X",
data);
break;
case MEMORY_ROM_ERROR_KICKDISK_SUPER:
sprintf(error3,
"The ADF-image contains a superkickstart. Fellow can not handle it.");
break;
case MEMORY_ROM_ERROR_BAD_BANK:
sprintf(error3, "The ROM has a bad baseaddress: %X",
memory_kickimage_basebank*0x10000);
break;
}
wguiRequester(error1, error2, error3);
memoryKickSettingsClear();
}
/*============================================================================*/
/* Returns the checksum of the current kickstart image. */
/*============================================================================*/
ULO memoryKickChksum(void)
{
ULO sum, lastsum, i;
sum = lastsum = 0;
for (i = 0; i < 0x80000; i += 4) {
UBY *p = memory_kick + i;
sum += memoryReadLongFromPointer(p);
if (sum < lastsum) sum++;
lastsum = sum;
}
return ~sum;
}
/*============================================================================*/
/* Identifies a loaded Kickstart */
/*============================================================================*/
STR *memoryKickIdentify(STR *s)
{
UBY *rom = memory_kick;
ULO ver, rev;
ver = (rom[12] << 8) | rom[13];
rev = (rom[14] << 8) | rom[15];
if (ver == 65535) memory_kickimage_version = 28;
else if (ver < 29) memory_kickimage_version = 29;
else if (ver > 41) memory_kickimage_version = 41;
else memory_kickimage_version = ver;
sprintf(s,
"%s (%d.%d)",
memory_kickimage_versionstrings[memory_kickimage_version - 28],
ver,
rev);
return s;
}
/*============================================================================*/
/* Verifies that a loaded Kickstart is OK */
/*============================================================================*/
void memoryKickOK(void)
{
ULO chksum, basebank;
if ((chksum = memoryKickChksum()) != 0)
memoryKickError(MEMORY_ROM_ERROR_CHECKSUM, chksum);
else
{
basebank = memory_kick[5];
if ((basebank == 0xf8) || (basebank == 0xfc)) {
memory_kickimage_basebank = basebank;
memory_kickimage_none = FALSE;
memoryKickIdentify(memory_kickimage_versionstr);
memory_initial_PC = memoryReadLongFromPointer((memory_kick + 4));
memory_initial_SP = memoryReadLongFromPointer(memory_kick);
}
else
memoryKickError(MEMORY_ROM_ERROR_BAD_BANK, basebank);
}
}
/*============================================================================*/
/* Returns size of decoded kickstart */
/*============================================================================*/
int memoryKickDecodeAF(STR *filename, STR *keyfile)
{
STR *keybuffer = NULL;
ULO keysize, filesize = 0, keypos = 0, c;
FILE *KF, *RF;
/* Read key */
if ((KF = fopen(keyfile, "rb")) != NULL)
{
fseek(KF, 0, SEEK_END);
keysize = ftell(KF);
keybuffer = (STR*)malloc(keysize);
if (keybuffer != NULL)
{
fseek(KF, 0, SEEK_SET);
fread(keybuffer, 1, keysize, KF);
}
fclose(KF);
}
else
{
#ifdef WIN32
HMODULE hAmigaForeverDLL;
STR *strLibName = TEXT("amigaforever.dll");
STR strPath[CFG_FILENAME_LENGTH];
hAmigaForeverDLL = LoadLibrary(strLibName);
if (!hAmigaForeverDLL)
{
DWORD dwRet;
STR strAmigaForeverRoot[CFG_FILENAME_LENGTH] = "";
dwRet = GetEnvironmentVariable("AMIGAFOREVERROOT", strAmigaForeverRoot, CFG_FILENAME_LENGTH);
if((dwRet > 0) && strAmigaForeverRoot) {
TCHAR strTemp[CFG_FILENAME_LENGTH];
_tcscpy(strTemp, strAmigaForeverRoot);
if (strTemp[_tcslen(strTemp) - 1] == '/' || strTemp[_tcslen(strTemp) - 1] == '\\')
_tcscat(strTemp, TEXT("\\"));
_stprintf(strPath, TEXT("%sPlayer\\%s"), strTemp, strLibName);
hAmigaForeverDLL = LoadLibrary(strPath);
}
if (hAmigaForeverDLL)
{
typedef DWORD (STDAPICALLTYPE *PFN_GetKey)(LPVOID lpvBuffer, DWORD dwSize);
PFN_GetKey pfnGetKey = (PFN_GetKey)GetProcAddress(hAmigaForeverDLL, "GetKey");
if (pfnGetKey)
{
keysize = pfnGetKey(NULL, 0);
if (keysize)
{
keybuffer = (STR*)malloc(keysize);
if (keybuffer)
{
if (pfnGetKey(keybuffer, keysize) == keysize)
{
// key successfully retrieved
}
else
{
memoryKickError(MEMORY_ROM_ERROR_KEYFILE, 0);
return -1;
}
}
}
}
FreeLibrary(hAmigaForeverDLL);
}
#endif
}
if (!keybuffer)
{
memoryKickError(MEMORY_ROM_ERROR_KEYFILE, 0);
return -1;
}
}
if (!keybuffer)
return -1;
/* Read file */
if ((RF = fopen(filename, "rb")) != NULL)
{
fseek(RF, 11, SEEK_SET);
while (((c = fgetc(RF)) != EOF) && filesize < 524288)
{
if (keysize != 0)
c ^= keybuffer[keypos++];
if (keypos == keysize)
keypos = 0;
memory_kick[filesize++] = (UBY) c;
}
while ((c = fgetc(RF)) != EOF)
filesize++;
fclose(RF);
free(keybuffer);
return filesize;
}
free(keybuffer);
return -1;
}
/*============================================================================*/
/* Load Amiga Forever encrypted ROM-files */
/* Return TRUE if file was handled, that is both if the file is */
/* valid, or has wrong version */
/*============================================================================*/
int memoryKickLoadAF2(FILE *F)
{
ULO version;
STR IDString[12];
fread(IDString, 11, 1, F);
version = IDString[10] - '0';
IDString[10] = '\0';
if (stricmp(IDString, "AMIROMTYPE") == 0)
{ /* Header seems OK */
if (version != 1)
{
memoryKickError(MEMORY_ROM_ERROR_AMIROM_VERSION, version);
return TRUE; /* File was handled */
}
else
{ /* Seems to be a file we can handle */
ULO size;
fclose(F);
size = memoryKickDecodeAF(memory_kickimage,
memory_key);
if (size == -1)
{
memoryKickError(MEMORY_ROM_ERROR_AMIROM_READ, 0);
return TRUE;
}
if (size != 262144 && size != 524288)
{
memoryKickError(MEMORY_ROM_ERROR_SIZE, size);
return TRUE;
}
if (size == 262144)
memcpy(memory_kick + 262144, memory_kick, 262144);
memory_kickimage_none = FALSE;
memoryKickIdentify(memory_kickimage_versionstr);
return TRUE;
}
}
/* Here, header was not recognized */
return FALSE;
}
/*============================================================================*/
/* Detect and load kickdisk */
/* Based on information provided by Jerry Lawrence */
/*============================================================================*/
void memoryKickDiskLoad(FILE *F)
{
STR head[5];
/* Check header */
fseek(F, 0, SEEK_SET);
fread(head, 4, 1, F);
head[4] = '\0';
if (strcmp(head, "KICK") != 0)
{
memoryKickError(MEMORY_ROM_ERROR_KICKDISK_NOT, 0);
return;
}
fread(head, 3, 1, F);
head[3] = '\0';
if (strcmp(head, "SUP") == 0)
{
memoryKickError(MEMORY_ROM_ERROR_KICKDISK_SUPER, 0);
return;
}
fseek(F, 512, SEEK_SET); /* Load image */
fread(memory_kick, 262144, 1, F);
memcpy(memory_kick + 262144, memory_kick, 262144);
}
/*============================================================================*/
/* memory_kickimage is the file we want to load */
/*============================================================================*/
void memoryKickLoad(void)
{
FILE *F;
BOOLE kickdisk = FALSE;
STR *suffix, *lastsuffix;
BOOLE afkick = FALSE;
/* New file is different from previous */
/* Must load file */
fs_navig_point *fsnp;
memory_kickimage_none = FALSE;/* Initially Kickstart is expected to be OK */
if ((fsnp = fsWrapMakePoint(memory_kickimage)) == NULL)
memoryKickError(MEMORY_ROM_ERROR_EXISTS_NOT, 0);
else
{
if (fsnp->type != FS_NAVIG_FILE)
memoryKickError(MEMORY_ROM_ERROR_FILE, 0);
else
{ /* File passed initial tests */
if ((F = fopen(memory_kickimage, "rb")) == NULL)
memoryKickError(MEMORY_ROM_ERROR_EXISTS_NOT, 0);
else memory_kickimage_size = fsnp->size;
}
free(fsnp);
}
/* Either the file is open, or memory_kickimage_none is TRUE */
if (!memory_kickimage_none)
{
/* File opened successfully */
/* Kickdisk flag */
suffix = strchr(memory_kickimage, '.');
if (suffix != NULL)
{
lastsuffix = suffix;
while ((suffix = strchr(lastsuffix + 1, '.')) != NULL)
lastsuffix = suffix;
kickdisk = (stricmp(lastsuffix + 1, "ADF") == 0);
}
/* mem_loadrom_af2 will return TRUE if file was handled */
/* Handled also means any error conditions */
/* The result can be that no kickstart was loaded */
if (kickdisk)
memoryKickDiskLoad(F);
else
afkick = memoryKickLoadAF2(F);
if (!kickdisk && !afkick)
{ /* Normal kickstart image */
fseek(F, 0, SEEK_SET);
if (memory_kickimage_size == 262144)
{ /* Load 256k ROM */
fread(memory_kick, 1, 262144, F);
memcpy(memory_kick + 262144, memory_kick, 262144);
}
else if (memory_kickimage_size == 524288)/* Load 512k ROM */
fread(memory_kick, 1, 524288, F);
else
{ /* Rom size is wrong */
memoryKickError(MEMORY_ROM_ERROR_SIZE, memory_kickimage_size);
}
fclose(F);
}
}
if (!memory_kickimage_none)
memoryKickOK();
}
/*============================================================================*/
/* Clear memory used for kickstart image */
/*============================================================================*/
void memoryKickClear(void)
{
memset(memory_kick, 0, 0x80000);
}
/*============================================================================*/
/* Top-level memory access functions */
/*============================================================================*/
/*==============================================================================
Raises exception 3 when a word or long is accessing an odd address
and the CPU is < 020
==============================================================================*/
static void memoryOddRead(ULO address)
{
if (address & 1)
{
if (cpuGetModelMajor() < 2)
{
memory_fault_read = TRUE;
memory_fault_address = address;
cpuThrowAddressErrorException();
}
}
}
static void memoryOddWrite(ULO address)
{
if (address & 1)
{
if (cpuGetModelMajor() < 2)
{
memory_fault_read = FALSE;
memory_fault_address = address;
cpuThrowAddressErrorException();
}
}
}
UBY memoryReadByteViaBankHandler(ULO address)
{
return memory_bank_readbyte[address >> 16](address);
}
__inline UBY memoryReadByte(ULO address)
{
UBY *memory_ptr = memory_bank_pointer[address>>16];
if (memory_ptr != NULL)
{
UBY *p = memory_ptr + address;
return memoryReadByteFromPointer(p);
}
return memoryReadByteViaBankHandler(address);
}
UWO memoryReadWordViaBankHandler(ULO address)
{
memoryOddRead(address);
return memory_bank_readword[address >> 16](address);
}
__inline UWO memoryReadWord(ULO address)
{
UBY *memory_ptr = memory_bank_pointer[address>>16];
if ((memory_ptr != NULL) && !(address & 1))
{
UBY *p = memory_ptr + address;
return memoryReadWordFromPointer(p);
}
return memoryReadWordViaBankHandler(address);
}
ULO memoryReadLongViaBankHandler(ULO address)
{
memoryOddRead(address);
return memory_bank_readlong[address >> 16](address);
}
__inline ULO memoryReadLong(ULO address)
{
UBY *memory_ptr = memory_bank_pointer[address>>16];
if ((memory_ptr != NULL) && !(address & 1))
{
UBY *p = memory_ptr + address;
return memoryReadLongFromPointer(p);
}
return memoryReadLongViaBankHandler(address);
}
void memoryWriteByte(UBY data, ULO address)
{
ULO bank = address>>16;
if (memory_bank_pointer_can_write[bank])
{
memoryWriteByteToPointer(data, memory_bank_pointer[bank] + address);
}
else
{
memory_bank_writebyte[bank](data, address);
}
}
void memoryWriteWordViaBankHandler(UWO data, ULO address)
{
memoryOddWrite(address);
memory_bank_writeword[address >> 16](data, address);
}
void memoryWriteWord(UWO data, ULO address)
{
ULO bank = address>>16;
if (memory_bank_pointer_can_write[bank] && !(address & 1))
{
memoryWriteWordToPointer(data, memory_bank_pointer[bank] + address);
}
else
{
memoryWriteWordViaBankHandler(data, address);
}
}
void memoryWriteLongViaBankHandler(ULO data, ULO address)
{
memoryOddWrite(address);
memory_bank_writelong[address >> 16](data, address);
}
void memoryWriteLong(ULO data, ULO address)
{
ULO bank = address>>16;
if (memory_bank_pointer_can_write[bank] && !(address & 1))
{
memoryWriteLongToPointer(data, memory_bank_pointer[bank] + address);
}
else
{
memoryWriteLongViaBankHandler(data, address);
}
}
/*============================================================================*/
/* Memory configuration interface */
/*============================================================================*/
BOOLE memorySetChipSize(ULO chipsize)
{
BOOLE needreset = (memory_chipsize != chipsize);
memory_chipsize = chipsize;
return needreset;
}
ULO memoryGetChipSize(void)
{
return memory_chipsize;
}
BOOLE memorySetFastSize(ULO fastsize)
{
BOOLE needreset = (memory_fastsize != fastsize);
memory_fastsize = fastsize;
if (needreset) memoryFastAllocate();
return needreset;
}
ULO memoryGetFastSize(void)
{
return memory_fastsize;
}
void memorySetFastAllocatedSize(ULO fastallocatedsize)
{
memory_fastallocatedsize = fastallocatedsize;
}
ULO memoryGetFastAllocatedSize(void)
{
return memory_fastallocatedsize;
}
BOOLE memorySetSlowSize(ULO slowsize)
{
BOOLE needreset = (memory_slowsize != slowsize);
memory_slowsize = slowsize;
return needreset;
}
ULO memoryGetSlowSize(void)
{
return memory_slowsize;
}
BOOLE memorySetUseAutoconfig(BOOLE useautoconfig)
{
BOOLE needreset = memory_useautoconfig != useautoconfig;
memory_useautoconfig = useautoconfig;
return needreset;
}
BOOLE memoryGetUseAutoconfig(void)
{
return memory_useautoconfig;
}
BOOLE memorySetAddress32Bit(BOOLE address32bit)
{
BOOLE needreset = memory_address32bit != address32bit;
memory_address32bit = address32bit;
return needreset;
}
BOOLE memoryGetAddress32Bit(void)
{
return memory_address32bit;
}
BOOLE memorySetKickImage(STR *kickimage)
{
BOOLE needreset = !!strncmp(memory_kickimage, kickimage, CFG_FILENAME_LENGTH);
strncpy(memory_kickimage, kickimage, CFG_FILENAME_LENGTH);
if (needreset) memoryKickLoad();
return needreset;
}
STR *memoryGetKickImage(void)
{
return memory_kickimage;
}
void memorySetKey(STR *key)
{
strncpy(memory_key, key, CFG_FILENAME_LENGTH);
}
STR *memoryGetKey(void)
{
return memory_key;
}
ULO memoryGetKickImageBaseBank(void)
{
return memory_kickimage_basebank;
}
ULO memoryGetKickImageVersion(void)
{
return memory_kickimage_version;
}
BOOLE memoryGetKickImageOK(void)
{
return !memory_kickimage_none;
}
ULO memoryInitialPC(void)
{
return memory_initial_PC;
}
ULO memoryInitialSP(void)
{
return memory_initial_SP;
}
/*============================================================================*/
/* Sets all settings a clean state */
/*============================================================================*/
void memoryChipSettingsClear(void)
{
memorySetChipSize(0x200000);
memoryChipClear();
}
void memoryFastSettingsClear(void)
{
memory_fast = NULL;
memory_fast_baseaddress = 0;
memorySetFastAllocatedSize(0);
memorySetFastSize(0);
}
void memorySlowSettingsClear(void)
{
memorySetSlowSize(0x1c0000);
memorySlowClear();
}
void memoryIoSettingsClear(void)
{
memoryIoClear();
}
void memoryKickSettingsClear(void)
{
memory_kickimage[0] = '\0';
memory_kickimage_none = TRUE;
memoryKickClear();
}
void memoryEmemSettingsClear(void)
{
memoryEmemCardsRemove();
memoryEmemClear();
}
void memoryDmemSettingsClear(void)
{
memoryDmemSetCounter(0);
memoryDmemClear();
}
void memoryNoiseSettingsClear(void)
{
memory_noise[0] = 0;
memory_noise[1] = 0xffffffff;
memory_noisecounter = 0;
}
void memoryMysterySettingsClear(void)
{
memory_mystery_value = 0xff00ff00;
}
void memoryBankSettingsClear(void)
{
memoryBankClearAll();
}
void memoryIoHandlersInstall(void)
{
memorySetIoReadStub(0x018, rserdatr);
memorySetIoReadStub(0x01c, rintenar);
memorySetIoReadStub(0x01e, rintreqr);
memorySetIoWriteStub(0x09a, wintena);
memorySetIoWriteStub(0x09c, wintreq);
}
/*==============*/
/* Generic init */
/*==============*/
void memorySaveState(FILE *F)
{
fwrite(&memory_chipsize, sizeof(memory_chipsize), 1, F);
fwrite(&memory_slowsize, sizeof(memory_slowsize), 1, F);
fwrite(&memory_fastsize, sizeof(memory_fastsize), 1, F);
if (memory_chipsize > 0)
{
fwrite(&memory_chip[0], sizeof(UBY), memory_chipsize, F);
}
if (memory_slowsize > 0)
{
fwrite(&memory_slow[0], sizeof(UBY), memory_slowsize, F);
}
if (memory_fastsize > 0)
{
fwrite(memory_fast, sizeof(UBY), memory_fastsize, F);
}
}
void memoryLoadState(FILE *F)
{
fread(&memory_chipsize, sizeof(memory_chipsize), 1, F);
fread(&memory_slowsize, sizeof(memory_slowsize), 1, F);
fread(&memory_fastsize, sizeof(memory_fastsize), 1, F);
if (memory_chipsize > 0)
{
fread(&memory_chip[0], sizeof(UBY), memory_chipsize, F);
}
if (memory_slowsize > 0)
{
fread(&memory_slow[0], sizeof(UBY), memory_slowsize, F);
}
if (memory_fastsize > 0)
{
fread(memory_fast, sizeof(UBY), memory_fastsize, F);
}
}
void memoryEmulationStart(void)
{
memoryIoClear();
memoryIoHandlersInstall();
}
void memoryEmulationStop(void)
{
}
void memorySoftReset(void)
{
memoryDmemClear();
memoryEmemClear();
memoryEmemCardsRemove();
memoryFastCardAdd();
intreq = intena = intenar = 0;
memoryBankClearAll();
memoryChipMap(TRUE);
memorySlowMap();
memoryIoMap();
memoryEmemMap();
memoryDmemMap();
memoryMysteryMap();
memoryKickMap();
}
void memoryHardReset(void)
{
memoryChipClear(),
memoryFastClear();
memorySlowClear();
memoryDmemClear();
memoryEmemClear();
memoryEmemCardsRemove();
memoryFastCardAdd();
intreq = intena = intenar = 0;
memoryBankClearAll();
memoryChipMap(TRUE);
memorySlowMap();
memoryIoMap();
memoryEmemMap();
memoryDmemMap();
memoryMysteryMap();
memoryKickMap();
}
void memoryHardResetPost(void)
{
memoryEmemCardInit();
}
void memoryStartup(void)
{
memorySetAddress32Bit(TRUE);
memoryBankSettingsClear();
memorySetAddress32Bit(FALSE);
memoryChipSettingsClear();
memoryFastSettingsClear();
memorySlowSettingsClear();
memoryIoSettingsClear();
memoryKickSettingsClear();
memoryEmemSettingsClear();
memoryDmemSettingsClear();
memoryNoiseSettingsClear();
memoryMysterySettingsClear(); /* ;-) */
}
void memoryShutdown(void)
{
memoryFastFree();
}
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