/********************************************************************************** Up Scope Driver by Mariusz Wojcieszek *********************************************************************************** Up Scope Grand Products 1986 rom board +--------------+ amiga I/O board u4 u3 u2 u1 u6 u5 Amiga 500 7404 7400 74374 6116 8255 TIP120 TIP120 u12 u11 u10 u9 battery TIP120 TIP120 TIP120 TIP120 u14 u13 TIP120 TIP120 TIP120 TIP120 +---------------+ **********************************************************************************/ #include "driver.h" #include "includes/amiga.h" /************************************* * * Debugging * *************************************/ #define LOG_IO 0 /************************************* * * Globals * *************************************/ static UINT8 prev_cia1_porta; static UINT8 parallel_data; static UINT8 nvram_address_latch; static UINT8 nvram_data_latch; /************************************* * * Reset state * *************************************/ static void upscope_reset(void) { prev_cia1_porta = 0xff; } /************************************* * * CIA-A port A access: * * PA7 = game port 1, pin 6 (fire) * PA6 = game port 0, pin 6 (fire) * PA5 = /RDY (disk ready) * PA4 = /TK0 (disk track 00) * PA3 = /WPRO (disk write protect) * PA2 = /CHNG (disk change) * PA1 = /LED (LED, 0=bright / audio filter control) * PA0 = OVL (ROM/RAM overlay bit) * *************************************/ static void upscope_cia_0_porta_w(UINT8 data) { /* switch banks as appropriate */ memory_set_bank(1, data & 1); /* swap the write handlers between ROM and bank 1 based on the bit */ if ((data & 1) == 0) /* overlay disabled, map RAM on 0x000000 */ memory_install_write16_handler(0, ADDRESS_SPACE_PROGRAM, 0x000000, 0x07ffff, 0, 0, MWA16_BANK1); else /* overlay enabled, map Amiga system ROM on 0x000000 */ memory_install_write16_handler(0, ADDRESS_SPACE_PROGRAM, 0x000000, 0x07ffff, 0, 0, MWA16_ROM); } /************************************* * * CIA-A port B access: * * PB7 = parallel data 7 * PB6 = parallel data 6 * PB5 = parallel data 5 * PB4 = parallel data 4 * PB3 = parallel data 3 * PB2 = parallel data 2 * PB1 = parallel data 1 * PB0 = parallel data 0 * *************************************/ static void upscope_cia_0_portb_w(UINT8 data) { parallel_data = data; } static UINT8 upscope_cia_0_portb_r(void) { return nvram_data_latch; } /************************************* * * CIA-B port A access: * * PA7 = com line /DTR * PA6 = com line /RTS * PA5 = com line /carrier detect * PA4 = com line /CTS * PA3 = com line /DSR * PA2 = SEL (Centronics parellel control) * PA1 = POUT (Centronics parellel control) * PA0 = BUSY (Centronics parellel control) * *************************************/ static UINT8 upscope_cia_1_porta_r(void) { return 0xf8 | (prev_cia1_porta & 0x07); } static void upscope_cia_1_porta_w(UINT8 data) { /* on a low transition of POUT, we latch stuff for the NVRAM */ if ((prev_cia1_porta & 2) && !(data & 2)) { /* if SEL == 1 && BUSY == 0, we latch an address */ if ((data & 5) == 4) { if (LOG_IO) logerror("Latch address: %02X\n", parallel_data); nvram_address_latch = parallel_data; } /* if SEL == 1 && BUSY == 1, we write data to internal registers */ else if ((data & 5) == 5) { switch (nvram_address_latch) { case 0x01: /* lamps: 01 = Enemy Right 02 = Enemy Left 04 = Torpedo 1 08 = Torpedo 2 10 = Torpedo 3 20 = Torpedo 4 40 = Sight 80 = Bubble Light */ break; case 0x02: /* coin counter */ coin_counter_w(0, data & 1); break; case 0x03: /* Written $98 at startup and nothing afterwards */ break; default: logerror("Internal register (%d) = %02X\n", nvram_address_latch, parallel_data); break; } } /* if SEL == 0 && BUSY == 1, we write data to NVRAM */ else if ((data & 5) == 1) { if (LOG_IO) logerror("NVRAM data write @ %02X = %02X\n", nvram_address_latch, parallel_data); generic_nvram[nvram_address_latch] = parallel_data; } /* if SEL == 0 && BUSY == 0, who knows? */ else { logerror("Unexpected: POUT low with SEL == 0/BUSY == 0\n"); } } /* on a low transition of BUSY, we latch stuff for reading */ else if ((prev_cia1_porta & 1) && !(data & 1)) { /* if SEL == 1, we read internal data registers */ if (data & 4) { if (LOG_IO) logerror("Internal register (%d) read\n", nvram_address_latch); nvram_data_latch = (nvram_address_latch == 0) ? readinputportbytag("IO0") : 0xff; } /* if SEL == 0, we read NVRAM */ else { nvram_data_latch = generic_nvram[nvram_address_latch]; if (LOG_IO) logerror("NVRAM data read @ %02X = %02X\n", nvram_address_latch, nvram_data_latch); } } /* remember the previous value */ prev_cia1_porta = data; } /************************************* * * Memory map * *************************************/ static ADDRESS_MAP_START( main_map, ADDRESS_SPACE_PROGRAM, 16 ) ADDRESS_MAP_FLAGS( AMEF_UNMAP(1) ) AM_RANGE(0x000000, 0x07ffff) AM_RAMBANK(1) AM_BASE(&amiga_chip_ram) AM_SIZE(&amiga_chip_ram_size) AM_RANGE(0xbfd000, 0xbfefff) AM_READWRITE(amiga_cia_r, amiga_cia_w) AM_RANGE(0xc00000, 0xdfffff) AM_READWRITE(amiga_custom_r, amiga_custom_w) AM_BASE(&amiga_custom_regs) AM_RANGE(0xe80000, 0xe8ffff) AM_READWRITE(amiga_autoconfig_r, amiga_autoconfig_w) AM_RANGE(0xfc0000, 0xffffff) AM_ROM AM_REGION(REGION_USER1, 0) /* System ROM */ AM_RANGE(0xf00000, 0xf7ffff) AM_ROM AM_REGION(REGION_USER2, 0) ADDRESS_MAP_END /************************************* * * Input ports * *************************************/ static INPUT_PORTS_START( upscope ) PORT_START_TAG("POT1DAT") PORT_BIT( 0xff, 0x80, IPT_PADDLE) PORT_SENSITIVITY(25) PORT_MINMAX(0x02,0xfe) PORT_KEYDELTA(5) PORT_CENTERDELTA(0) PORT_REVERSE PORT_START_TAG("IO0") PORT_SERVICE( 0x01, IP_ACTIVE_LOW ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) INPUT_PORTS_END /************************************* * * Sound definitions * *************************************/ static struct CustomSound_interface amiga_custom_interface = { amiga_sh_start }; /************************************* * * Machine driver * *************************************/ static MACHINE_DRIVER_START( upscope ) /* basic machine hardware */ MDRV_CPU_ADD(M68000, AMIGA_68000_NTSC_CLOCK) MDRV_CPU_PROGRAM_MAP(main_map,0) MDRV_CPU_VBLANK_INT(amiga_scanline_callback, 262) MDRV_SCREEN_REFRESH_RATE(59.997) MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0)) MDRV_MACHINE_RESET(amiga) MDRV_NVRAM_HANDLER(generic_0fill) /* video hardware */ MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER | VIDEO_UPDATE_BEFORE_VBLANK) MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16) MDRV_SCREEN_SIZE(512*2, 262) MDRV_SCREEN_VISIBLE_AREA((129-8)*2, (449+8-1)*2, 44-8, 244+8-1) MDRV_PALETTE_LENGTH(4096) MDRV_PALETTE_INIT(amiga) MDRV_VIDEO_START(amiga) MDRV_VIDEO_UPDATE(generic_bitmapped) /* sound hardware */ MDRV_SPEAKER_STANDARD_STEREO("left", "right") MDRV_SOUND_ADD(CUSTOM, 3579545) MDRV_SOUND_CONFIG(amiga_custom_interface) MDRV_SOUND_ROUTE(0, "right", 0.50) MDRV_SOUND_ROUTE(1, "left", 0.50) MDRV_SOUND_ROUTE(2, "left", 0.50) MDRV_SOUND_ROUTE(3, "right", 0.50) MACHINE_DRIVER_END /************************************* * * ROM definitions * *************************************/ ROM_START( upscope ) ROM_REGION(0x80000, REGION_USER1, 0) ROM_LOAD16_WORD_SWAP( "kick12.rom", 0x000000, 0x40000, CRC(a6ce1636) SHA1(11f9e62cf299f72184835b7b2a70a16333fc0d88) ) ROM_COPY( REGION_USER1, 0x000000, 0x040000, 0x040000 ) ROM_REGION(0x080000, REGION_USER2, 0) ROM_LOAD16_BYTE( "upscope.u5", 0x000000, 0x008000, CRC(c109912e) SHA1(dcac9522e3c4818b2a02212b9173540fcf4bd463) ) ROM_LOAD16_BYTE( "upscope.u13", 0x000001, 0x008000, CRC(9c8b071a) SHA1(69f9f8c17630ed568975e65dadc03213677a12dd) ) ROM_LOAD16_BYTE( "upscope.u6", 0x010000, 0x008000, CRC(962f371e) SHA1(5682c62f34df2cc70f6125cf14203087670571db) ) ROM_LOAD16_BYTE( "upscope.u14", 0x010001, 0x008000, CRC(1231bfc1) SHA1(f99adfabb01c1a15130f82f6a09d5458109a28bb) ) ROM_LOAD16_BYTE( "upscope.u1", 0x040000, 0x008000, CRC(7a8de1fb) SHA1(30b87f07e0e0f66699402dffaeb0ca00c554f23e) ) ROM_LOAD16_BYTE( "upscope.u9", 0x040001, 0x008000, CRC(5d16521e) SHA1(93e0a1644bd8adbb6f9fca6d4a252c11812c6ada) ) ROM_LOAD16_BYTE( "upscope.u2", 0x050000, 0x008000, CRC(2089ef6b) SHA1(a12d87c8b368ffbadb556aca2e43e50348d34839) ) ROM_LOAD16_BYTE( "upscope.u10", 0x050001, 0x008000, CRC(fbab44f5) SHA1(cd49f1f79e2181b3a9c40aebfba9d7c314dc909b) ) ROM_LOAD16_BYTE( "upscope.u3", 0x060000, 0x008000, CRC(9b325528) SHA1(5bde1a42b62dd810843349ee9edf76e1c7521653) ) ROM_LOAD16_BYTE( "upscope.u11", 0x060001, 0x008000, CRC(40e54449) SHA1(7d6ed97b87d74d80776cb682c78cd3b4a68633f4) ) ROM_LOAD16_BYTE( "upscope.u4", 0x070000, 0x008000, CRC(6585ef1d) SHA1(b95e5e424266a50d4b63501278eb5d618fde5ba2) ) ROM_LOAD16_BYTE( "upscope.u12", 0x070001, 0x008000, CRC(a909e388) SHA1(62acc30ab97d6a46a6d0782bb4ceb58061332724) ) ROM_END /************************************* * * Driver init * *************************************/ static DRIVER_INIT( upscope ) { static const amiga_machine_interface upscope_intf = { ANGUS_CHIP_RAM_MASK, NULL, upscope_cia_0_portb_r, upscope_cia_0_porta_w, upscope_cia_0_portb_w, upscope_cia_1_porta_r, NULL, upscope_cia_1_porta_w, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, upscope_reset, NULL, 0 }; amiga_machine_config(&upscope_intf); /* allocate NVRAM */ generic_nvram_size = 0x100; generic_nvram = auto_malloc(generic_nvram_size); /* set up memory */ memory_configure_bank(1, 0, 1, amiga_chip_ram, 0); memory_configure_bank(1, 1, 1, memory_region(REGION_USER1), 0); } /************************************* * * Game drivers * *************************************/ GAME( 1986, upscope, 0, upscope, upscope, upscope, ORIENTATION_FLIP_X, "Grand Products", "Up Scope", GAME_IMPERFECT_SOUND )