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Reduce ram size for shared ram.

This commit is contained in:
iq_132 2013-11-16 01:46:49 +00:00
parent 7cb596ad25
commit 699470a419
2 changed files with 13 additions and 13 deletions
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22
src/burn/drv/pgm/pgm_prot.cpp
View File

@ -405,16 +405,16 @@ static UINT8 *svg_ram[2];
static void svg_set_ram_bank(INT32 data)
{
svg_ram_sel = data & 1;
Arm7MapMemory(svg_ram[svg_ram_sel], 0x38000000, 0x3801ffff, ARM7_RAM);
SekMapMemory(svg_ram[svg_ram_sel^1], 0x500000, 0x51ffff, SM_FETCH);
Arm7MapMemory(svg_ram[svg_ram_sel], 0x38000000, 0x3800ffff, ARM7_RAM);
SekMapMemory(svg_ram[svg_ram_sel^1], 0x500000, 0x50ffff, SM_FETCH);
}
static void __fastcall svg_write_byte(UINT32 address, UINT8 data)
{
pgm_cpu_sync();
if ((address & 0xffe0000) == 0x0500000) {
svg_ram[svg_ram_sel^1][(address & 0x1ffff)^1] = data;
if ((address & 0xfff0000) == 0x0500000) {
svg_ram[svg_ram_sel^1][(address & 0xffff)^1] = data;
return;
}
@ -431,8 +431,8 @@ static void __fastcall svg_write_word(UINT32 address, UINT16 data)
{
pgm_cpu_sync();
if ((address & 0xffe0000) == 0x0500000) {
*((UINT16*)(svg_ram[svg_ram_sel^1] + (address & 0x1fffe))) = BURN_ENDIAN_SWAP_INT16(data);
if ((address & 0xfff0000) == 0x0500000) {
*((UINT16*)(svg_ram[svg_ram_sel^1] + (address & 0xfffe))) = BURN_ENDIAN_SWAP_INT16(data);
return;
}
@ -451,10 +451,10 @@ static void __fastcall svg_write_word(UINT32 address, UINT16 data)
static UINT8 __fastcall svg_read_byte(UINT32 address)
{
if ((address & 0xffe0000) == 0x0500000) {
if ((address & 0xfff0000) == 0x0500000) {
pgm_cpu_sync();
INT32 d = svg_ram[svg_ram_sel^1][(address & 0x1ffff)^1];
INT32 d = svg_ram[svg_ram_sel^1][(address & 0xffff)^1];
return d;
}
@ -470,10 +470,10 @@ static UINT8 __fastcall svg_read_byte(UINT32 address)
static UINT16 __fastcall svg_read_word(UINT32 address)
{
if ((address & 0xffe0000) == 0x0500000) {
if ((address & 0xfff0000) == 0x0500000) {
pgm_cpu_sync();
return BURN_ENDIAN_SWAP_INT16(*((UINT16*)(svg_ram[svg_ram_sel^1] + (address & 0x1fffe))));
return BURN_ENDIAN_SWAP_INT16(*((UINT16*)(svg_ram[svg_ram_sel^1] + (address & 0xfffe))));
}
switch (address)
@ -632,7 +632,7 @@ void install_protection_asic27a_svg()
Arm7MapMemory(PGMUSER0, 0x08000000, 0x08000000 | (nPGMExternalARMLen-1), ARM7_ROM);
Arm7MapMemory(PGMARMRAM0, 0x10000000, 0x100003ff, ARM7_RAM);
Arm7MapMemory(PGMARMRAM1, 0x18000000, 0x1803ffff, ARM7_RAM);
Arm7MapMemory(svg_ram[1], 0x38000000, 0x3801ffff, ARM7_RAM);
Arm7MapMemory(svg_ram[1], 0x38000000, 0x3800ffff, ARM7_RAM);
Arm7MapMemory(PGMARMRAM2, 0x50000000, 0x500003ff, ARM7_RAM);
Arm7SetWriteByteHandler(svg_arm7_write_byte);
Arm7SetWriteWordHandler(svg_arm7_write_word);

4
src/burn/drv/pgm/pgm_run.cpp
View File

@ -81,8 +81,8 @@ static INT32 pgmMemIndex()
RamZ80 = Next; Next += 0x0010000;
if (BurnDrvGetHardwareCode() & HARDWARE_IGS_USE_ARM_CPU) {
PGMARMShareRAM = Next; Next += 0x0020000;
PGMARMShareRAM2 = Next; Next += 0x0020000;
PGMARMShareRAM = Next; Next += 0x0010000;
PGMARMShareRAM2 = Next; Next += 0x0010000;
PGMARMRAM0 = Next; Next += 0x0001000; // minimum map is 0x1000 - should be 0x400
PGMARMRAM1 = Next; Next += 0x0040000;
PGMARMRAM2 = Next; Next += 0x0001000; // minimum map is 0x1000 - should be 0x400