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lowercasing filenames, part3

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@576 be3aeb3a-fb24-0410-a615-afba39da0efa
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notaz 2008-08-28 12:36:57 +00:00
parent d158df697d
commit 1cfc5cc4ce
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225
pico/carthw/carthw.c Normal file
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/*
* Support for a few cart mappers.
*
* (c) Copyright 2008, Grazvydas "notaz" Ignotas
* Free for non-commercial use.
*
*
* I should better do some pointer stuff here. But as none of these bankswitch
* while the game runs, memcpy will suffice.
*/
#include "../pico_int.h"
/* 12-in-1 and 4-in-1. Assuming >= 2MB ROMs here. */
static unsigned int carthw_12in1_baddr = 0;
static carthw_state_chunk carthw_12in1_state[] =
{
{ CHUNK_CARTHW, sizeof(carthw_12in1_baddr), &carthw_12in1_baddr },
{ 0, 0, NULL }
};
static unsigned int carthw_12in1_read16(unsigned int a, int realsize)
{
// ??
elprintf(EL_UIO, "12-in-1: read [%06x] @ %06x", a, SekPc);
return 0;
}
static void carthw_12in1_write8(unsigned int a, unsigned int d, int realsize)
{
int len;
if (a < 0xA13000 || a >= 0xA13040) {
/* 4-in-1 has Real Deal Boxing, which uses serial eeprom,
* but I really doubt that pirate cart had it */
if (a != 0x200001)
elprintf(EL_ANOMALY, "12-in-1: unexpected write [%06x] %02x @ %06x", a, d, SekPc);
return;
}
carthw_12in1_baddr = a;
a &= 0x3f; a <<= 16;
len = Pico.romsize - a;
if (len <= 0) {
elprintf(EL_ANOMALY|EL_STATUS, "12-in-1: missing bank @ %06x", a);
return;
}
memcpy(Pico.rom, Pico.rom + Pico.romsize + a, len);
}
static void carthw_12in1_reset(void)
{
carthw_12in1_write8(0xA13000, 0, 0);
}
static void carthw_12in1_statef(void)
{
carthw_12in1_write8(carthw_12in1_baddr, 0, 0);
}
void carthw_12in1_startup(void)
{
void *tmp;
elprintf(EL_STATUS, "12-in-1 mapper detected");
tmp = realloc(Pico.rom, Pico.romsize * 2);
if (tmp == NULL)
{
elprintf(EL_STATUS, "OOM");
return;
}
Pico.rom = tmp;
memcpy(Pico.rom + Pico.romsize, Pico.rom, Pico.romsize);
PicoRead16Hook = carthw_12in1_read16;
PicoWrite8Hook = carthw_12in1_write8;
PicoResetHook = carthw_12in1_reset;
PicoLoadStateHook = carthw_12in1_statef;
carthw_chunks = carthw_12in1_state;
}
/* Realtec, based on TascoDLX doc
* http://www.sharemation.com/TascoDLX/REALTEC%20Cart%20Mapper%20-%20description%20v1.txt
*/
static int realtec_bank = 0x80000000, realtec_size = 0x80000000;
static int realtec_romsize = 0;
static void carthw_realtec_write8(unsigned int a, unsigned int d, int realsize)
{
int i, bank_old = realtec_bank, size_old = realtec_size;
if (a == 0x400000)
{
realtec_bank &= 0x0e0000;
realtec_bank |= 0x300000 & (d << 19);
if (realtec_bank != bank_old)
elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc);
}
else if (a == 0x402000)
{
realtec_size = (d << 17) & 0x3e0000;
if (realtec_size != size_old)
elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc);
}
else if (a == 0x404000)
{
realtec_bank &= 0x300000;
realtec_bank |= 0x0e0000 & (d << 17);
if (realtec_bank != bank_old)
elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc);
}
else
elprintf(EL_ANOMALY, "realtec: unexpected write [%06x] %02x @ %06x", a, d, SekPc);
if (realtec_bank >= 0 && realtec_size >= 0 &&
(realtec_bank != bank_old || realtec_size != size_old))
{
elprintf(EL_ANOMALY, "realtec: new bank %06x, size %06x", realtec_bank, realtec_size, SekPc);
if (realtec_size > realtec_romsize - realtec_bank || realtec_bank >= realtec_romsize)
{
elprintf(EL_ANOMALY, "realtec: bank too large / out of range?");
return;
}
for (i = 0; i < 0x400000; i += realtec_size)
memcpy(Pico.rom + i, Pico.rom + 0x400000 + realtec_bank, realtec_size);
}
}
static void carthw_realtec_reset(void)
{
int i;
/* map boot code */
for (i = 0; i < 0x400000; i += 0x2000)
memcpy(Pico.rom + i, Pico.rom + 0x400000 + realtec_romsize - 0x2000, 0x2000);
realtec_bank = realtec_size = 0x80000000;
}
void carthw_realtec_startup(void)
{
void *tmp;
elprintf(EL_STATUS, "Realtec mapper detected");
realtec_romsize = Pico.romsize;
Pico.romsize = 0x400000;
tmp = realloc(Pico.rom, 0x400000 + realtec_romsize);
if (tmp == NULL)
{
elprintf(EL_STATUS, "OOM");
return;
}
Pico.rom = tmp;
memcpy(Pico.rom + 0x400000, Pico.rom, realtec_romsize);
PicoWrite8Hook = carthw_realtec_write8;
PicoResetHook = carthw_realtec_reset;
}
/* Radica mapper, based on DevSter's info
* http://devster.monkeeh.com/sega/radica/
*/
static unsigned int carthw_radica_baddr = 0;
static carthw_state_chunk carthw_radica_state[] =
{
{ CHUNK_CARTHW, sizeof(carthw_radica_baddr), &carthw_radica_baddr },
{ 0, 0, NULL }
};
static unsigned int carthw_radica_read16(unsigned int a, int realsize)
{
if ((a & 0xffff80) != 0xa13000) {
elprintf(EL_UIO, "radica: r16 %06x", a);
return 0;
}
carthw_radica_baddr = a;
a = (a & 0x7e) << 15;
if (a >= Pico.romsize) {
elprintf(EL_ANOMALY|EL_STATUS, "radica: missing bank @ %06x", a);
return 0;
}
memcpy(Pico.rom, Pico.rom + Pico.romsize + a, Pico.romsize - a);
return 0;
}
static void carthw_radica_statef(void)
{
carthw_radica_read16(carthw_radica_baddr, 0);
}
static void carthw_radica_reset(void)
{
memcpy(Pico.rom, Pico.rom + Pico.romsize, Pico.romsize);
}
void carthw_radica_startup(void)
{
void *tmp;
elprintf(EL_STATUS, "Radica mapper detected");
tmp = realloc(Pico.rom, Pico.romsize * 2);
if (tmp == NULL)
{
elprintf(EL_STATUS, "OOM");
return;
}
Pico.rom = tmp;
memcpy(Pico.rom + Pico.romsize, Pico.rom, Pico.romsize);
PicoRead16Hook = carthw_radica_read16;
PicoResetHook = carthw_radica_reset;
PicoLoadStateHook = carthw_radica_statef;
carthw_chunks = carthw_radica_state;
}