/****************************************************************************** * * Acorn Archimedes 310 * * Skeleton: Juergen Buchmueller , Jul 2000 * Enhanced: R. Belmont, June 2007 * Angelo Salese, August 2010 * * TODO: * - try to understand why bios 2 was working at some point and now isn't * - fix RISC OS / Arthur booting, possible causes: * \- missing reset page size hook-up * \- some subtle memory paging fault * \- missing RAM max size * \- ARM bug? * * ======================================================================================= * * Memory map (from http://b-em.bbcmicro.com/arculator/archdocs.txt) * * 0000000 - 1FFFFFF - logical RAM (32 meg) * 2000000 - 2FFFFFF - physical RAM (supervisor only - max 16MB - requires quad MEMCs) * 3000000 - 33FFFFF - IOC (IO controllers - supervisor only) * 3310000 - FDC - WD1772 * 33A0000 - Econet - 6854 * 33B0000 - Serial - 6551 * 3240000 - 33FFFFF - internal expansion cards * 32D0000 - hard disc controller (not IDE) - HD63463 * 3350010 - printer * 3350018 - latch A * 3350040 - latch B * 3270000 - external expansion cards * * 3400000 - 3FFFFFF - ROM (read - 12 meg - Arthur and RiscOS 2 512k, RiscOS 3 2MB) * 3400000 - 37FFFFF - Low ROM (4 meg, I think this is expansion ROMs) * 3800000 - 3FFFFFF - High ROM (main OS ROM) * * 3400000 - 35FFFFF - VICD10 (write - supervisor only) * 3600000 - 3FFFFFF - MEMC (write - supervisor only) * *****************************************************************************/ /* DASM of code (bios 2 / RISC OS 2) 0x380d4e0: MEMC: control to 0x10c (page size 32 kbytes, DRAM ram refresh only during flyback) 0x380d4f0: VIDC: params (screen + sound frequency) 0x380d51c: IOC: sets control to 0xff, clear IRQA and FIQ masks, sets IRQB mask to 0x80 (keyboard receive full irq) 0x380d530: IOC: sets timer 0 to 0x4e20, go command 0x380e0a8: work RAM physical check, max size etc. 0x380e1f8: IOC: Disables DRAM ram refresh, sets timer 1 to 0x7ffe, go command, then it tests the latch of this timer, enables DRAM refresh 0x380d00c: Set up default logical space 0x380d16c: Set up case by case logical space */ #include "emu.h" #include "machine/wd17xx.h" #include "imagedev/flopdrv.h" #include "cpu/arm/arm.h" #include "sound/dac.h" #include "includes/archimds.h" #include "machine/i2cmem.h" //#include "machine/aakart.h" #include "machine/ram.h" class a310_state : public archimedes_state { public: a310_state(const machine_config &mconfig, device_type type, const char *tag) : archimedes_state(mconfig, type, tag) , m_physram(*this, "physicalram") , m_ram(*this, RAM_TAG) { } required_shared_ptr m_physram; DECLARE_READ32_MEMBER(a310_psy_wram_r); DECLARE_WRITE32_MEMBER(a310_psy_wram_w); DECLARE_WRITE_LINE_MEMBER(a310_wd177x_intrq_w); DECLARE_WRITE_LINE_MEMBER(a310_wd177x_drq_w); DECLARE_DRIVER_INIT(a310); virtual void machine_start(); virtual void machine_reset(); protected: required_device m_ram; }; WRITE_LINE_MEMBER(a310_state::a310_wd177x_intrq_w) { if (state) archimedes_request_fiq(ARCHIMEDES_FIQ_FLOPPY); else archimedes_clear_fiq(ARCHIMEDES_FIQ_FLOPPY); } WRITE_LINE_MEMBER(a310_state::a310_wd177x_drq_w) { if (state) archimedes_request_fiq(ARCHIMEDES_FIQ_FLOPPY_DRQ); else archimedes_clear_fiq(ARCHIMEDES_FIQ_FLOPPY_DRQ); } READ32_MEMBER(a310_state::a310_psy_wram_r) { return m_physram[offset]; } WRITE32_MEMBER(a310_state::a310_psy_wram_w) { COMBINE_DATA(&m_physram[offset]); } DRIVER_INIT_MEMBER(a310_state,a310) { UINT32 ram_size = m_ram->size(); m_maincpu->space(AS_PROGRAM).install_readwrite_handler( 0x02000000, 0x02000000+(ram_size-1), read32_delegate(FUNC(a310_state::a310_psy_wram_r), this), write32_delegate(FUNC(a310_state::a310_psy_wram_w), this)); archimedes_driver_init(); } void a310_state::machine_start() { archimedes_init(); // reset the DAC to centerline //m_dac->write_signed8(0x80); } void a310_state::machine_reset() { archimedes_reset(); } static ADDRESS_MAP_START( a310_mem, AS_PROGRAM, 32, a310_state ) AM_RANGE(0x00000000, 0x01ffffff) AM_READWRITE(archimedes_memc_logical_r, archimedes_memc_logical_w) AM_RANGE(0x02000000, 0x02ffffff) AM_RAM AM_SHARE("physicalram") /* physical RAM - 16 MB for now, should be 512k for the A310 */ AM_RANGE(0x03000000, 0x033fffff) AM_READWRITE(archimedes_ioc_r, archimedes_ioc_w) AM_RANGE(0x03400000, 0x035fffff) AM_READWRITE(archimedes_vidc_r, archimedes_vidc_w) AM_RANGE(0x03600000, 0x037fffff) AM_READWRITE(archimedes_memc_r, archimedes_memc_w) AM_RANGE(0x03800000, 0x03ffffff) AM_ROM AM_REGION("maincpu", 0) AM_WRITE(archimedes_memc_page_w) ADDRESS_MAP_END static INPUT_PORTS_START( a310 ) PORT_START("dip") /* DIP switches */ PORT_BIT(0xfd, 0xfd, IPT_UNUSED) PORT_START("key0") /* KEY ROW 0 */ PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("ESC") PORT_CODE(KEYCODE_ESC) PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("1 !") PORT_CODE(KEYCODE_1) PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("2 \"") PORT_CODE(KEYCODE_2) PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("3 #") PORT_CODE(KEYCODE_3) PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("4 $") PORT_CODE(KEYCODE_4) PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("5 %") PORT_CODE(KEYCODE_5) PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("6 &") PORT_CODE(KEYCODE_6) PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("7 '") PORT_CODE(KEYCODE_7) PORT_START("key1") /* KEY ROW 1 */ PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("8 *") PORT_CODE(KEYCODE_8) PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("9 (") PORT_CODE(KEYCODE_9) PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("0 )") PORT_CODE(KEYCODE_0) PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("- _") PORT_CODE(KEYCODE_MINUS) PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("= +") PORT_CODE(KEYCODE_EQUALS) PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("` ~") PORT_CODE(KEYCODE_TILDE) PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("BACK SPACE") PORT_CODE(KEYCODE_BACKSPACE) PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("TAB") PORT_CODE(KEYCODE_TAB) PORT_START("key2") /* KEY ROW 2 */ PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("q Q") PORT_CODE(KEYCODE_Q) PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("w W") PORT_CODE(KEYCODE_W) PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("e E") PORT_CODE(KEYCODE_E) PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("r R") PORT_CODE(KEYCODE_R) PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("t T") PORT_CODE(KEYCODE_T) PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("y Y") PORT_CODE(KEYCODE_Y) PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("u U") PORT_CODE(KEYCODE_U) PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("i I") PORT_CODE(KEYCODE_I) PORT_START("key3") /* KEY ROW 3 */ PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("o O") PORT_CODE(KEYCODE_O) PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("p P") PORT_CODE(KEYCODE_P) PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("[ {") PORT_CODE(KEYCODE_OPENBRACE) PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("] }") PORT_CODE(KEYCODE_CLOSEBRACE) PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("RETURN") PORT_CODE(KEYCODE_ENTER) PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("DEL") PORT_CODE(KEYCODE_DEL) PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_BIT(0x80, 0x80, IPT_KEYBOARD) PORT_NAME("CAPS LOCK") PORT_CODE(KEYCODE_CAPSLOCK) PORT_TOGGLE PORT_START("key4") /* KEY ROW 4 */ PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("a A") PORT_CODE(KEYCODE_A) PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("s S") PORT_CODE(KEYCODE_S) PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("d D") PORT_CODE(KEYCODE_D) PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("f F") PORT_CODE(KEYCODE_F) PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("g G") PORT_CODE(KEYCODE_G) PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("h H") PORT_CODE(KEYCODE_H) PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("j J") PORT_CODE(KEYCODE_J) PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("k K") PORT_CODE(KEYCODE_K) PORT_START("key5") /* KEY ROW 5 */ PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("l L") PORT_CODE(KEYCODE_L) PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("; :") PORT_CODE(KEYCODE_COLON) PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("' \"") PORT_CODE(KEYCODE_QUOTE) PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("\\ |") PORT_CODE(KEYCODE_ASTERISK) PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("SHIFT (L)") PORT_CODE(KEYCODE_LSHIFT) PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("z Z") PORT_CODE(KEYCODE_Z) PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("x X") PORT_CODE(KEYCODE_X) PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("c C") PORT_CODE(KEYCODE_C) PORT_START("key6") /* KEY ROW 6 */ PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("v V") PORT_CODE(KEYCODE_V) PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("b B") PORT_CODE(KEYCODE_B) PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("n N") PORT_CODE(KEYCODE_N) PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("m M") PORT_CODE(KEYCODE_M) PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME(", <") PORT_CODE(KEYCODE_COMMA) PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME(". >") PORT_CODE(KEYCODE_STOP) PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("/ ?") PORT_CODE(KEYCODE_SLASH) PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("SHIFT (R)") PORT_CODE(KEYCODE_RSHIFT) PORT_START("key7") /* KEY ROW 7 */ PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("LINE FEED") PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("SPACE") PORT_CODE(KEYCODE_SPACE) PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("- (KP)") PORT_CODE(KEYCODE_MINUS_PAD) PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME(", (KP)") PORT_CODE(KEYCODE_PLUS_PAD) PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("ENTER (KP)") PORT_CODE(KEYCODE_ENTER_PAD) PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME(". (KP)") PORT_CODE(KEYCODE_DEL_PAD) PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("0 (KP)") PORT_CODE(KEYCODE_0_PAD) PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("1 (KP)") PORT_CODE(KEYCODE_1_PAD) PORT_START("key8") /* KEY ROW 8 */ PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("2 (KP)") PORT_CODE(KEYCODE_2_PAD) PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("3 (KP)") PORT_CODE(KEYCODE_3_PAD) PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("4 (KP)") PORT_CODE(KEYCODE_4_PAD) PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("5 (KP)") PORT_CODE(KEYCODE_5_PAD) PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("6 (KP)") PORT_CODE(KEYCODE_6_PAD) PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("7 (KP)") PORT_CODE(KEYCODE_7_PAD) PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("8 (KP)") PORT_CODE(KEYCODE_8_PAD) PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("9 (KP)") PORT_CODE(KEYCODE_9_PAD) PORT_START("via1a") /* VIA #1 PORT A */ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START) PORT_PLAYER(1) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START) PORT_PLAYER(2) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_4WAY PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_4WAY PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_4WAY PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_4WAY PORT_START("tape")/* tape control */ PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("TAPE STOP") PORT_CODE(KEYCODE_F5) PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("TAPE PLAY") PORT_CODE(KEYCODE_F6) PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("TAPE REW") PORT_CODE(KEYCODE_F7) PORT_BIT (0xf8, 0x80, IPT_UNUSED) INPUT_PORTS_END static const wd17xx_interface a310_wd17xx_interface = { DEVCB_NULL, DEVCB_DRIVER_LINE_MEMBER(a310_state, a310_wd177x_intrq_w), DEVCB_DRIVER_LINE_MEMBER(a310_state, a310_wd177x_drq_w), {FLOPPY_0, FLOPPY_1, FLOPPY_2, FLOPPY_3} }; static const i2cmem_interface i2cmem_interface = { I2CMEM_SLAVE_ADDRESS, 0, 0x100 }; WRITE_LINE_MEMBER( archimedes_state::a310_kart_tx_w ) { if(state) archimedes_request_irq_b(ARCHIMEDES_IRQB_KBD_RECV_FULL); else archimedes_clear_irq_b(ARCHIMEDES_IRQB_KBD_RECV_FULL); } WRITE_LINE_MEMBER( archimedes_state::a310_kart_rx_w ) { if(state) archimedes_request_irq_b(ARCHIMEDES_IRQB_KBD_XMIT_EMPTY); else archimedes_clear_irq_b(ARCHIMEDES_IRQB_KBD_XMIT_EMPTY); } static AAKART_INTERFACE( kart_interface ) { DEVCB_DRIVER_LINE_MEMBER(archimedes_state, a310_kart_tx_w), DEVCB_DRIVER_LINE_MEMBER(archimedes_state, a310_kart_rx_w) }; static MACHINE_CONFIG_START( a310, a310_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu", ARM, 8000000) /* 8 MHz */ MCFG_CPU_PROGRAM_MAP(a310_mem) MCFG_AAKART_ADD("kart", 8000000/128, kart_interface) // TODO: frequency MCFG_I2CMEM_ADD("i2cmem",i2cmem_interface) /* video hardware */ MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_REFRESH_RATE(60) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ MCFG_SCREEN_SIZE(1280, 1024) //TODO: default screen size MCFG_SCREEN_VISIBLE_AREA(0*8, 1280 - 1, 0*16, 1024 - 1) MCFG_SCREEN_UPDATE_DRIVER(archimedes_state, screen_update) MCFG_PALETTE_LENGTH(32768) MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("2M") MCFG_RAM_EXTRA_OPTIONS("512K, 1M, 4M, 8M, 16M") MCFG_WD1772_ADD("wd1772", a310_wd17xx_interface ) //MCFG_LEGACY_FLOPPY_4_DRIVES_ADD(a310_floppy_interface) MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD("dac0", DAC, 0) MCFG_SOUND_ROUTE(0, "mono", 0.10) MCFG_SOUND_ADD("dac1", DAC, 0) MCFG_SOUND_ROUTE(0, "mono", 0.10) MCFG_SOUND_ADD("dac2", DAC, 0) MCFG_SOUND_ROUTE(0, "mono", 0.10) MCFG_SOUND_ADD("dac3", DAC, 0) MCFG_SOUND_ROUTE(0, "mono", 0.10) MCFG_SOUND_ADD("dac4", DAC, 0) MCFG_SOUND_ROUTE(0, "mono", 0.10) MCFG_SOUND_ADD("dac5", DAC, 0) MCFG_SOUND_ROUTE(0, "mono", 0.10) MCFG_SOUND_ADD("dac6", DAC, 0) MCFG_SOUND_ROUTE(0, "mono", 0.10) MCFG_SOUND_ADD("dac7", DAC, 0) MCFG_SOUND_ROUTE(0, "mono", 0.10) MACHINE_CONFIG_END ROM_START(a310) ROM_REGION( 0x800000, "maincpu", 0 ) ROM_SYSTEM_BIOS( 0, "311", "RiscOS 3.11 (29 Sep 1992)" ) ROMX_LOAD( "ic24.rom", 0x000000, 0x80000, CRC(c1adde84) SHA1(12d060e0401dd0523d44453f947bdc55dd2c3240), ROM_BIOS(1) ) ROMX_LOAD( "ic25.rom", 0x080000, 0x80000, CRC(15d89664) SHA1(78f5d0e6f1e8ee603317807f53ff8fe65a3b3518), ROM_BIOS(1) ) ROMX_LOAD( "ic26.rom", 0x100000, 0x80000, CRC(a81ceb7c) SHA1(46b870876bc1f68f242726415f0c49fef7be0c72), ROM_BIOS(1) ) ROMX_LOAD( "ic27.rom", 0x180000, 0x80000, CRC(707b0c6c) SHA1(345199a33fed23996374b9db8170a52ab63f0380), ROM_BIOS(1) ) ROM_SYSTEM_BIOS( 1, "120", "Arthur/RiscOS 1.20 (25 Sep 1987)" ) ROMX_LOAD( "arthur.bin", 0x000000, 0x080000, CRC(eb3fda57) SHA1(1181ff9c2c2f3d6d414054ec33b2260404bafc81), ROM_BIOS(2) ) ROM_SYSTEM_BIOS( 2, "200", "RiscOS 2.0 (05 Oct 1988)" ) ROMX_LOAD( "riscos2.bin", 0x000000, 0x080000, CRC(89c4ad36) SHA1(b82a78830dac386f9b649b6d32a34f9c6910546d), ROM_BIOS(3) ) ROM_REGION( 0x200000, "vram", ROMREGION_ERASE00 ) ROM_REGION( 0x100, "i2cmem", ROMREGION_ERASE00 ) ROM_END ROM_START( a3010 ) ROM_REGION( 0x800000, "maincpu", ROMREGION_ERASEFF ) ROM_LOAD32_WORD( "riscos_3.10_1.bin", 0x000000, 0x100000, CRC(b77fe215) SHA1(57b19ea4b97a9b6a240aa61211c2c134cb295aa0)) ROM_LOAD32_WORD( "riscos_3.10_2.bin", 0x000002, 0x100000, CRC(d42e196e) SHA1(64243d39d1bca38b10761f66a8042c883bde87a4)) ROM_REGION( 0x200000, "vram", ROMREGION_ERASE00 ) ROM_REGION( 0x100, "i2cmem", ROMREGION_ERASE00 ) ROM_END ROM_START( a3020 ) ROM_REGION( 0x800000, "maincpu", ROMREGION_ERASEFF ) ROM_LOAD32_WORD( "riscos_3.11_1.bin", 0x000000, 0x100000, CRC(552fc3aa) SHA1(b2f1911e53d7377f2e69e1a870139745d3df494b)) ROM_LOAD32_WORD( "riscos_3.11_2.bin", 0x000002, 0x100000, CRC(308d5a4a) SHA1(b309e1dd85670a06d77ec504dbbec6c42336329f)) ROM_REGION( 0x200000, "vram", ROMREGION_ERASE00 ) ROM_REGION( 0x100, "i2cmem", ROMREGION_ERASE00 ) ROM_END /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME */ COMP( 1988, a310, 0, 0, a310, a310, a310_state, a310, "Acorn", "Archimedes 310", GAME_NOT_WORKING) COMP( 1988, a3010, a310, 0, a310, a310, a310_state, a310, "Acorn", "Archimedes 3010", GAME_NOT_WORKING) COMP( 1988, a3020, a310, 0, a310, a310, a310_state, a310, "Acorn", "Archimedes 3020", GAME_NOT_WORKING)