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add init to convert twinbeeb bubble dump into something the driver can actually use (nw) (#6646)

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* add init to convert twinbeeb bubble dump into something the driver can actually use (nw)

* note checksum of reencoded data created by our function (nw)
This commit is contained in:
David Haywood 2020-05-08 14:02:12 +01:00 committed by GitHub
parent 015b1ab880
commit c83d7fe44e
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 47 additions and 3 deletions
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49
src/mame/drivers/nemesis.cpp
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@ -481,6 +481,7 @@ void nemesis_state::bubsys_map(address_map &map)
map(0x054000, 0x054fff).ram().w(FUNC(nemesis_state::nemesis_colorram1_word_w)).share("colorram1"); map(0x054000, 0x054fff).ram().w(FUNC(nemesis_state::nemesis_colorram1_word_w)).share("colorram1");
map(0x055000, 0x055fff).ram().w(FUNC(nemesis_state::nemesis_colorram2_word_w)).share("colorram2"); map(0x055000, 0x055fff).ram().w(FUNC(nemesis_state::nemesis_colorram2_word_w)).share("colorram2");
map(0x056000, 0x056fff).ram().share("spriteram"); map(0x056000, 0x056fff).ram().share("spriteram");
map(0x057000, 0x057fff).ram();
map(0x05a000, 0x05afff).ram().w(FUNC(nemesis_state::nemesis_palette_word_w)).share("paletteram"); map(0x05a000, 0x05afff).ram().w(FUNC(nemesis_state::nemesis_palette_word_w)).share("paletteram");
map(0x05c001, 0x05c001).w("soundlatch", FUNC(generic_latch_8_device::write)); map(0x05c001, 0x05c001).w("soundlatch", FUNC(generic_latch_8_device::write));
map(0x05c402, 0x05c403).portr("DSW0"); map(0x05c402, 0x05c403).portr("DSW0");
@ -3038,8 +3039,11 @@ ROM_START( twinbeeb )
ROM_REGION( 0x80000, "maincpu", ROMREGION_ERASE00 ) ROM_REGION( 0x80000, "maincpu", ROMREGION_ERASE00 )
ROM_LOAD16_WORD( "boot.bin", 0x000, 0x1e0, CRC(ee6e93d7) SHA1(7302c08a726a760f59d6837be8fd10bbd1f79da0) ) ROM_LOAD16_WORD( "boot.bin", 0x000, 0x1e0, CRC(ee6e93d7) SHA1(7302c08a726a760f59d6837be8fd10bbd1f79da0) )
ROM_REGION( 0x40300, "bubblememory", 0 ) ROM_REGION( 0x806*0x90, "bubblememory", ROMREGION_ERASE00 )
ROM_LOAD16_WORD_SWAP( "twinbee.bin", 0x00000, 0x40300, CRC(4d396a0a) SHA1(ee922a1bd7062c0fcf358f5079cca6424aadc975) ) // ROM_LOAD16_WORD_SWAP( "bubble_twinbeeb", 0x000, 0x48360, CRC(21599cf5) SHA1(7eb068e10134d5c66f7f90f6d6b265353b7bd8be) ) // re-encoded data
ROM_REGION( 0x806*0x80, "bubblememory_temp", 0 )
ROM_LOAD( "twinbee.bin", 0x00000, 0x40300, CRC(4d396a0a) SHA1(ee922a1bd7062c0fcf358f5079cca6424aadc975) )
ROM_REGION( 0x1000, "mcu", ROMREGION_ERASE00 ) // Fujitsu MCU ROM_REGION( 0x1000, "mcu", ROMREGION_ERASE00 ) // Fujitsu MCU
ROM_LOAD( "mcu", 0x0000, 0x1000, NO_DUMP ) ROM_LOAD( "mcu", 0x0000, 0x1000, NO_DUMP )
@ -3078,9 +3082,48 @@ void nemesis_state::bubsys_init()
m_bubsys_control_ram[3]=0x240; m_bubsys_control_ram[3]=0x240;
} }
void nemesis_state::bubsys_twinbeeb_init()
{
// the twinbee bubble data is in a stripped down, predecoded state already, why?
// this reencodes it to something the loading code can actually use
uint8_t *src = memregion("bubblememory_temp")->base();
uint8_t *dst = memregion("bubblememory")->base();
for (int i = 0; i < 0x806; i++)
{
uint16_t crc = 0;
int sourcebase = i * 0x80;
int destbase = i * 0x90;
for (int j = 0; j < 0x80; j++)
{
uint8_t dat = src[sourcebase + j];
dst[destbase + j + 0] |= (dat >> 6) & 0x03;
dst[destbase + j + 1] |= (dat << 2) & 0xfc;
crc += dat;
}
for (int j = 0; j < 0x82; j += 2)
{
uint8_t temp1 = dst[destbase + j + 0];
dst[destbase + j + 0] = dst[destbase + j + 1];
dst[destbase + j + 1] = temp1;
}
dst[destbase+0x83] = i >> 8;
dst[destbase+0x82] = i & 0xff;
}
bubsys_init();
}
GAME( 1985, bubsys, 0, bubsys, bubsys, nemesis_state, bubsys_init, ROT0, "Konami", "Bubble System BIOS", MACHINE_IS_BIOS_ROOT ) GAME( 1985, bubsys, 0, bubsys, bubsys, nemesis_state, bubsys_init, ROT0, "Konami", "Bubble System BIOS", MACHINE_IS_BIOS_ROOT )
GAME( 1985, gradiusb, bubsys, bubsys, bubsys, nemesis_state, bubsys_init, ROT0, "Konami", "Gradius (Bubble System)", MACHINE_UNEMULATED_PROTECTION ) GAME( 1985, gradiusb, bubsys, bubsys, bubsys, nemesis_state, bubsys_init, ROT0, "Konami", "Gradius (Bubble System)", MACHINE_UNEMULATED_PROTECTION )
GAME( 1985, twinbeeb, bubsys, bubsys, bubsys, nemesis_state, bubsys_init, ROT0, "Konami", "TwinBee (Bubble System)", MACHINE_NOT_WORKING | MACHINE_UNEMULATED_PROTECTION ) // doesn't seem to like the MCU simulation GAME( 1985, twinbeeb, bubsys, bubsys, bubsys, nemesis_state, bubsys_twinbeeb_init, ROT90, "Konami", "TwinBee (Bubble System)", MACHINE_UNEMULATED_PROTECTION )
// Bubble System RF2 // Bubble System RF2
// Bubble System Galactic Warriors // Bubble System Galactic Warriors
// Bubble System Attack Rush // Bubble System Attack Rush

1
src/mame/includes/nemesis.h
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@ -61,6 +61,7 @@ public:
void blkpnthr(machine_config &config); void blkpnthr(machine_config &config);
void bubsys_init(); void bubsys_init();
void bubsys_twinbeeb_init();
private: private:
/* memory pointers */ /* memory pointers */