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gpgx: port some svp changes from old branch. that game sucked

This commit is contained in:
nattthebear 2017-06-22 17:31:31 -04:00
parent 23345eb7d3
commit e231cd5084
7 changed files with 3218 additions and 3185 deletions
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3
BizHawk.Emulation.Cores/Consoles/Sega/gpgx64/GPGX.cs
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@ -48,7 +48,8 @@ namespace BizHawk.Emulation.Cores.Consoles.Sega.gpgx64
SbrkHeapSizeKB = 256,
SealedHeapSizeKB = 36 * 1024,
InvisibleHeapSizeKB = 4 * 1024,
PlainHeapSizeKB = 64
PlainHeapSizeKB = 64,
MmapHeapSizeKB = 512
});
using (_elf.EnterExit())

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output/dll/gpgx.wbx
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output/dll/gpgx.wbx.gz Normal file
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11
waterbox/gpgx/core/cart_hw/md_cart.c
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@ -393,17 +393,6 @@ void md_cart_init(void)
if (strstr(rominfo.international,"Virtua Racing"))
{
svp_init();
m68k.memory_map[0x30].base = svp->dram;
m68k.memory_map[0x30].read16 = NULL;
m68k.memory_map[0x30].write16 = svp_write_dram;
m68k.memory_map[0x31].base = svp->dram + 0x10000;
m68k.memory_map[0x31].read16 = NULL;
m68k.memory_map[0x31].write16 = svp_write_dram;
m68k.memory_map[0x39].read16 = svp_read_cell_1;
m68k.memory_map[0x3a].read16 = svp_read_cell_2;
}
/**********************************************

100
waterbox/gpgx/core/cart_hw/svp/svp.c
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@ -1,23 +1,79 @@
/*
basic, incomplete SSP160x (SSP1601?) interpreter
with SVP memory controller emu
(c) Copyright 2008, Grazvydas "notaz" Ignotas
Free for non-commercial use.
For commercial use, separate licencing terms must be obtained.
Modified for Genesis Plus GX (Eke-Eke): added BIG ENDIAN support, fixed addr/code inversion
basic, incomplete SSP160x (SSP1601?) interpreter
with SVP memory controller emu
(c) Copyright 2008, Grazvydas "notaz" Ignotas
Free for non-commercial use.
For commercial use, separate licencing terms must be obtained.
Modified for Genesis Plus GX (Eke-Eke): added BIG ENDIAN support, fixed addr/code inversion
*/
#include "shared.h"
svp_t *svp = NULL;
svp_t *svp;
static void svp_write_dram(uint32 address, uint32 data)
{
*(uint16 *)(svp->dram + (address & 0x1fffe)) = data;
if (data)
{
if (address == 0x30fe06)
svp->ssp1601.emu_status &= ~SSP_WAIT_30FE06;
else if (address == 0x30fe08)
svp->ssp1601.emu_status &= ~SSP_WAIT_30FE08;
}
}
static uint32 svp_read_cell_1(uint32 address)
{
address = (address & 0xe002) | ((address & 0x7c) << 6) | ((address & 0x1f80) >> 5);
return *(uint16 *)(svp->dram + address);
}
static uint32 svp_read_cell_2(uint32 address)
{
address = (address & 0xf002) | ((address & 0x3c) << 6) | ((address & 0xfc0) >> 4);
return *(uint16 *)(svp->dram + address);
}
static uint32 svp_read_cell_byte(uint32 address)
{
uint16 data = m68k.memory_map[address >> 16].read16(address);
if (address & 0x01)
{
return (data & 0xff);
}
return (data >> 8);
}
void svp_init(void)
{
svp = malloc(sizeof(svp_t));
svp = malloc(sizeof(*svp));
memset(svp, 0, sizeof(*svp));
m68k.memory_map[0x30].base = svp->dram;
m68k.memory_map[0x30].read8 = NULL;
m68k.memory_map[0x30].read16 = NULL;
m68k.memory_map[0x30].write8 = NULL;
m68k.memory_map[0x30].write16 = svp_write_dram;
zbank_memory_map[0x30].read = NULL;
zbank_memory_map[0x30].write = NULL;
m68k.memory_map[0x31].base = svp->dram + 0x10000;
m68k.memory_map[0x31].read8 = NULL;
m68k.memory_map[0x31].read16 = NULL;
m68k.memory_map[0x31].write8 = NULL;
m68k.memory_map[0x31].write16 = NULL;
zbank_memory_map[0x31].read = NULL;
zbank_memory_map[0x31].write = NULL;
m68k.memory_map[0x39].read8 = svp_read_cell_byte;
m68k.memory_map[0x39].read16 = svp_read_cell_1;
zbank_memory_map[0x39].read = svp_read_cell_byte;
m68k.memory_map[0x3a].read8 = svp_read_cell_byte;
m68k.memory_map[0x3a].read16 = svp_read_cell_2;
zbank_memory_map[0x3a].read = svp_read_cell_byte;
}
void svp_reset(void)
@ -25,25 +81,3 @@ void svp_reset(void)
memcpy(svp->iram_rom + 0x800, cart.rom + 0x800, 0x20000 - 0x800);
ssp1601_reset(&svp->ssp1601);
}
void svp_write_dram(uint32 address, uint32 data)
{
*(uint16 *)(svp->dram + (address & 0x1fffe)) = data;
if ((address == 0x30fe06) && data) svp->ssp1601.emu_status &= ~SSP_WAIT_30FE06;
if ((address == 0x30fe08) && data) svp->ssp1601.emu_status &= ~SSP_WAIT_30FE08;
}
uint32 svp_read_cell_1(uint32 address)
{
address >>= 1;
address = (address & 0x7001) | ((address & 0x3e) << 6) | ((address & 0xfc0) >> 5);
return *(uint16 *)(svp->dram + (address & 0x1fffe));
}
uint32 svp_read_cell_2(uint32 address)
{
address >>= 1;
address = (address & 0x7801) | ((address & 0x1e) << 6) | ((address & 0x7e0) >> 4);
return *(uint16 *)(svp->dram + (address & 0x1fffe));
}

3
waterbox/gpgx/core/cart_hw/svp/svp.h
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@ -26,8 +26,5 @@ extern svp_t *svp;
extern void svp_init(void);
extern void svp_reset(void);
extern void svp_write_dram(uint32 address, uint32 data);
extern uint32 svp_read_cell_1(uint32 address);
extern uint32 svp_read_cell_2(uint32 address);
#endif

16
waterbox/gpgx/core/mem68k.c
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@ -416,6 +416,18 @@ unsigned int ctrl_io_read_byte(unsigned int address)
case 0x44: /* RADICA */
case 0x50: /* SVP */
{
if ((address & 0xFC) == 0x00)
{
unsigned int data = svp->ssp1601.gr[SSP_XST].byte.h;
return (address & 1) ? (data & 0xFF) : (data >> 8);
}
if ((address & 0xFE) == 0x04)
{
unsigned int data = svp->ssp1601.gr[SSP_PM0].byte.h;
svp->ssp1601.gr[SSP_PM0].byte.h &= ~1;
return (address & 1) ? (data & 0xFF) : (data >> 8);
}
return m68k_read_bus_8(address);
}
@ -532,12 +544,12 @@ unsigned int ctrl_io_read_word(unsigned int address)
case 0x50: /* SVP */
{
if ((address & 0xFD) == 0)
if ((address & 0xFC) == 0)
{
return svp->ssp1601.gr[SSP_XST].byte.h;
}
if ((address & 0xFF) == 4)
if ((address & 0xFE) == 4)
{
unsigned int data = svp->ssp1601.gr[SSP_PM0].byte.h;
svp->ssp1601.gr[SSP_PM0].byte.h &= ~1;