diff options
Diffstat (limited to 'src/mame/drivers/spec128.c')
-rw-r--r-- | src/mame/drivers/spec128.c | 364 |
1 files changed, 364 insertions, 0 deletions
diff --git a/src/mame/drivers/spec128.c b/src/mame/drivers/spec128.c new file mode 100644 index 00000000000..0c5161f65f4 --- /dev/null +++ b/src/mame/drivers/spec128.c @@ -0,0 +1,364 @@ +// license:GPL-2.0+ +// copyright-holders:Kevin Thacker +/*************************************************************************** + + NOTE: ****** Specbusy: press N, R, or E to boot ************* + + + Spectrum/Inves/TK90X etc. memory map: + + CPU: + 0000-3fff ROM + 4000-ffff RAM + + Spectrum 128/+2/+2a/+3 memory map: + + CPU: + 0000-3fff Banked ROM/RAM (banked rom only on 128/+2) + 4000-7fff Banked RAM + 8000-bfff Banked RAM + c000-ffff Banked RAM + + TS2068 memory map: (Can't have both EXROM and DOCK active) + The 8K EXROM can be loaded into multiple pages. + + CPU: + 0000-1fff ROM / EXROM / DOCK (Cartridge) + 2000-3fff ROM / EXROM / DOCK + 4000-5fff \ + 6000-7fff \ + 8000-9fff |- RAM / EXROM / DOCK + a000-bfff | + c000-dfff / + e000-ffff / + + +Interrupts: + +Changes: + +29/1/2000 KT - Implemented initial +3 emulation. +30/1/2000 KT - Improved input port decoding for reading and therefore + correct keyboard handling for Spectrum and +3. +31/1/2000 KT - Implemented buzzer sound for Spectrum and +3. + Implementation copied from Paul Daniel's Jupiter driver. + Fixed screen display problems with dirty chars. + Added support to load .Z80 snapshots. 48k support so far. +13/2/2000 KT - Added Interface II, Kempston, Fuller and Mikrogen + joystick support. +17/2/2000 DJR - Added full key descriptions and Spectrum+ keys. + Fixed Spectrum +3 keyboard problems. +17/2/2000 KT - Added tape loading from WAV/Changed from DAC to generic + speaker code. +18/2/2000 KT - Added tape saving to WAV. +27/2/2000 KT - Took DJR's changes and added my changes. +27/2/2000 KT - Added disk image support to Spectrum +3 driver. +27/2/2000 KT - Added joystick I/O code to the Spectrum +3 I/O handler. +14/3/2000 DJR - Tape handling dipswitch. +26/3/2000 DJR - Snapshot files are now classifed as snapshots not + cartridges. +04/4/2000 DJR - Spectrum 128 / +2 Support. +13/4/2000 DJR - +4 Support (unofficial 48K hack). +13/4/2000 DJR - +2a Support (rom also used in +3 models). +13/4/2000 DJR - TK90X, TK95 and Inves support (48K clones). +21/4/2000 DJR - TS2068 and TC2048 support (TC2048 Supports extra video + modes but doesn't have bank switching or sound chip). +09/5/2000 DJR - Spectrum +2 (France, Spain), +3 (Spain). +17/5/2000 DJR - Dipswitch to enable/disable disk drives on +3 and clones. +27/6/2000 DJR - Changed 128K/+3 port decoding (sound now works in Zub 128K). +06/8/2000 DJR - Fixed +3 Floppy support +10/2/2001 KT - Re-arranged code and split into each model emulated. + Code is split into 48k, 128k, +3, tc2048 and ts2048 + segments. 128k uses some of the functions in 48k, +3 + uses some functions in 128, and tc2048/ts2048 use some + of the functions in 48k. The code has been arranged so + these functions come in some kind of "override" order, + read functions changed to use READ8_HANDLER and write + functions changed to use WRITE8_HANDLER. + Added Scorpion256 preliminary. +18/6/2001 DJR - Added support for Interface 2 cartridges. +xx/xx/2001 KS - TS-2068 sound fixed. + Added support for DOCK cartridges for TS-2068. + Added Spectrum 48k Psycho modified rom driver. + Added UK-2086 driver. +23/12/2001 KS - 48k machines are now able to run code in screen memory. + Programs which keep their code in screen memory + like monitors, tape copiers, decrunchers, etc. + works now. + Fixed problem with interrupt vector set to 0xffff (much + more 128k games works now). + A useful used trick on the Spectrum is to set + interrupt vector to 0xffff (using the table + which contain 0xff's) and put a byte 0x18 hex, + the opcode for JR, at this address. The first + byte of the ROM is a 0xf3 (DI), so the JR will + jump to 0xfff4, where a long JP to the actual + interrupt routine is put. Due to unideal + bankswitching in MAME this JP were to 0001 what + causes Spectrum to reset. Fixing this problem + made much more software runing (i.e. Paperboy). + Corrected frames per second value for 48k and 128k + Sinclair machines. + There are 50.08 frames per second for Spectrum + 48k what gives 69888 cycles for each frame and + 50.021 for Spectrum 128/+2/+2A/+3 what gives + 70908 cycles for each frame. + Remapped some Spectrum+ keys. + Pressing F3 to reset was seting 0xf7 on keyboard + input port. Problem occurred for snapshots of + some programms where it was readed as pressing + key 4 (which is exit in Tapecopy by R. Dannhoefer + for example). + Added support to load .SP snapshots. + Added .BLK tape images support. + .BLK files are identical to .TAP ones, extension + is an only difference. +08/03/2002 KS - #FF port emulation added. + Arkanoid works now, but is not playable due to + completly messed timings. + +Initialisation values used when determining which model is being emulated: + 48K Spectrum doesn't use either port. + 128K/+2 Bank switches with port 7ffd only. + +3/+2a Bank switches with both ports. + +Notes: + 1. No contented memory. + 2. No hi-res colour effects (need contended memory first for accurate timing). + 3. Multiface 1 and Interface 1 not supported. + 4. Horace and the Spiders cartridge doesn't run properly. + 5. Tape images not supported: + .TZX, .SPC, .ITM, .PAN, .TAP(Warajevo), .VOC, .ZXS. + 6. Snapshot images not supported: + .ACH, .PRG, .RAW, .SEM, .SIT, .SNX, .ZX, .ZXS, .ZX82. + 7. 128K emulation is not perfect - the 128K machines crash and hang while + running quite a lot of games. + 8. Disk errors occur on some +3 games. + 9. Video hardware of all machines is timed incorrectly. +10. EXROM and HOME cartridges are not emulated. +11. The TK90X and TK95 roms output 0 to port #df on start up. +12. The purpose of this port is unknown (probably display mode as TS2068) and + thus is not emulated. + +Very detailed infos about the ZX Spectrum +3e can be found at + +http://www.z88forever.org.uk/zxplus3e/ + + +The hc2000 corrupts its memory, especially if you type something, and the +resulting mess can be seen in the F4 viewer display. + +*******************************************************************************/ + +#include "emu.h" +#include "cpu/z80/z80.h" +#include "includes/spectrum.h" +#include "imagedev/snapquik.h" +#include "imagedev/cassette.h" +#include "sound/ay8910.h" +#include "sound/speaker.h" +#include "formats/tzx_cas.h" +#include "machine/ram.h" + +/****************************************************************************************************/ +/* Spectrum 128 specific functions */ + +WRITE8_MEMBER(spectrum_state::spectrum_128_port_7ffd_w) +{ + /* D0-D2: RAM page located at 0x0c000-0x0ffff */ + /* D3 - Screen select (screen 0 in ram page 5, screen 1 in ram page 7 */ + /* D4 - ROM select - which rom paged into 0x0000-0x03fff */ + /* D5 - Disable paging */ + + /* disable paging? */ + if (m_port_7ffd_data & 0x20) + return; + + if ((m_port_7ffd_data ^ data) & 0x08) + spectrum_UpdateScreenBitmap(); + + /* store new state */ + m_port_7ffd_data = data; + + /* update memory */ + spectrum_128_update_memory(); +} + +void spectrum_state::spectrum_128_update_memory() +{ + UINT8 *messram = m_ram->pointer(); + + /* select ram at 0x0c000-0x0ffff */ + int ram_page = m_port_7ffd_data & 0x07; + unsigned char *ram_data = messram + (ram_page<<14); + membank("bank4")->set_base(ram_data); + + if (BIT(m_port_7ffd_data, 3)) + m_screen_location = messram + (7<<14); + else + m_screen_location = messram + (5<<14); + + if (!m_cart->exists()) + { + /* ROM switching */ + int ROMSelection = BIT(m_port_7ffd_data, 4); + + /* rom 0 is 128K rom, rom 1 is 48 BASIC */ + unsigned char *ChosenROM = memregion("maincpu")->base() + 0x010000 + (ROMSelection << 14); + + membank("bank1")->set_base(ChosenROM); + } +} + +READ8_MEMBER( spectrum_state::spectrum_128_ula_r ) +{ + int vpos = machine().first_screen()->vpos(); + + return vpos<193 ? m_screen_location[0x1800|(vpos&0xf8)<<2]:0xff; +} + +static ADDRESS_MAP_START (spectrum_128_io, AS_IO, 8, spectrum_state ) + AM_RANGE(0x0000, 0x0000) AM_READWRITE(spectrum_port_fe_r,spectrum_port_fe_w) AM_MIRROR(0xfffe) AM_MASK(0xffff) + AM_RANGE(0x001f, 0x001f) AM_READ(spectrum_port_1f_r) AM_MIRROR(0xff00) + AM_RANGE(0x007f, 0x007f) AM_READ(spectrum_port_7f_r) AM_MIRROR(0xff00) + AM_RANGE(0x00df, 0x00df) AM_READ(spectrum_port_df_r) AM_MIRROR(0xff00) + AM_RANGE(0x0000, 0x0000) AM_WRITE(spectrum_128_port_7ffd_w) AM_MIRROR(0x7ffd) // (A15 | A1) == 0, note: reading from this port does write to it by value from data bus + AM_RANGE(0x8000, 0x8000) AM_DEVWRITE("ay8912", ay8910_device, data_w) AM_MIRROR(0x3ffd) + AM_RANGE(0xc000, 0xc000) AM_DEVREADWRITE("ay8912", ay8910_device, data_r, address_w) AM_MIRROR(0x3ffd) + AM_RANGE(0x0001, 0x0001) AM_READ(spectrum_128_ula_r) AM_MIRROR(0xfffe) +ADDRESS_MAP_END + +static ADDRESS_MAP_START (spectrum_128_mem, AS_PROGRAM, 8, spectrum_state ) + AM_RANGE( 0x0000, 0x3fff) AM_ROMBANK("bank1") // don't use RAMBANK here otherwise programs can erase the ROM(!) + AM_RANGE( 0x4000, 0x7fff) AM_RAMBANK("bank2") + AM_RANGE( 0x8000, 0xbfff) AM_RAMBANK("bank3") + AM_RANGE( 0xc000, 0xffff) AM_RAMBANK("bank4") +ADDRESS_MAP_END + +MACHINE_RESET_MEMBER(spectrum_state,spectrum_128) +{ + UINT8 *messram = m_ram->pointer(); + + memset(messram,0,128*1024); + /* 0x0000-0x3fff always holds ROM */ + + /* Bank 5 is always in 0x4000 - 0x7fff */ + membank("bank2")->set_base(messram + (5<<14)); + + /* Bank 2 is always in 0x8000 - 0xbfff */ + membank("bank3")->set_base(messram + (2<<14)); + + MACHINE_RESET_CALL_MEMBER(spectrum); + + /* set initial ram config */ + m_port_7ffd_data = 0; + m_port_1ffd_data = -1; + spectrum_128_update_memory(); +} + +/* F4 Character Displayer */ +static const gfx_layout spectrum_charlayout = +{ + 8, 8, /* 8 x 8 characters */ + 96, /* 96 characters */ + 1, /* 1 bits per pixel */ + { 0 }, /* no bitplanes */ + /* x offsets */ + { 0, 1, 2, 3, 4, 5, 6, 7 }, + /* y offsets */ + { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 }, + 8*8 /* every char takes 8 bytes */ +}; + +static GFXDECODE_START( spec128 ) + GFXDECODE_ENTRY( "maincpu", 0x17d00, spectrum_charlayout, 0, 8 ) +GFXDECODE_END + + +MACHINE_CONFIG_DERIVED( spectrum_128, spectrum ) + + MCFG_DEVICE_REMOVE("maincpu") + + MCFG_CPU_ADD("maincpu", Z80, X1_128_SINCLAIR / 5) + MCFG_CPU_PROGRAM_MAP(spectrum_128_mem) + MCFG_CPU_IO_MAP(spectrum_128_io) + MCFG_CPU_VBLANK_INT_DRIVER("screen", spectrum_state, spec_interrupt) + MCFG_QUANTUM_TIME(attotime::from_hz(60)) + + MCFG_MACHINE_RESET_OVERRIDE(spectrum_state, spectrum_128 ) + + /* video hardware */ + MCFG_SCREEN_MODIFY("screen") + MCFG_SCREEN_RAW_PARAMS(X1_128_SINCLAIR / 2.5f, 456, 0, 352, 311, 0, 296) + + MCFG_VIDEO_START_OVERRIDE(spectrum_state, spectrum_128 ) + MCFG_GFXDECODE_MODIFY("gfxdecode", spec128) + + /* sound hardware */ + MCFG_SOUND_ADD("ay8912", AY8912, 1773400) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) + + /* internal ram */ + MCFG_RAM_MODIFY(RAM_TAG) + MCFG_RAM_DEFAULT_SIZE("128K") +MACHINE_CONFIG_END + + + + +/*************************************************************************** + + Game driver(s) + +***************************************************************************/ + + +ROM_START(spec128) + ROM_REGION(0x18000,"maincpu",0) + ROM_SYSTEM_BIOS( 0, "en", "English" ) + ROMX_LOAD("zx128_0.rom",0x10000,0x4000, CRC(e76799d2) SHA1(4f4b11ec22326280bdb96e3baf9db4b4cb1d02c5), ROM_BIOS(1)) + ROMX_LOAD("zx128_1.rom",0x14000,0x4000, CRC(b96a36be) SHA1(80080644289ed93d71a1103992a154cc9802b2fa), ROM_BIOS(1)) + ROM_SYSTEM_BIOS( 1, "sp", "Spanish" ) + ROMX_LOAD("zx128s0.rom",0x10000,0x4000, CRC(453d86b2) SHA1(968937b1c750f0ef6205f01c6db4148da4cca4e3), ROM_BIOS(2)) + ROMX_LOAD("zx128s1.rom",0x14000,0x4000, CRC(6010e796) SHA1(bea3f397cc705eafee995ea629f4a82550562f90), ROM_BIOS(2)) +ROM_END + +ROM_START(specpls2) + ROM_REGION(0x18000,"maincpu",0) + ROM_SYSTEM_BIOS( 0, "en", "English" ) + ROMX_LOAD("zxp2_0.rom",0x10000,0x4000, CRC(5d2e8c66) SHA1(72703f9a3e734f3c23ec34c0727aae4ccbef9a91), ROM_BIOS(1)) + ROMX_LOAD("zxp2_1.rom",0x14000,0x4000, CRC(98b1320b) SHA1(de8b0d2d0379cfe7c39322a086ca6da68c7f23cb), ROM_BIOS(1)) + ROM_SYSTEM_BIOS( 1, "fr", "French" ) + ROMX_LOAD("plus2fr0.rom",0x10000,0x4000, CRC(c684c535) SHA1(56684c4c85a616e726a50707483b9a42d8e724ed), ROM_BIOS(2)) + ROMX_LOAD("plus2fr1.rom",0x14000,0x4000, CRC(f5e509c5) SHA1(7e398f62689c9d90a36d3a101351ec9987207308), ROM_BIOS(2)) + ROM_SYSTEM_BIOS( 2, "sp", "Spanish" ) + ROMX_LOAD("plus2sp0.rom",0x10000,0x4000, CRC(e807d06e) SHA1(8259241b28ff85441f1bedc2bee53445767c51c5), ROM_BIOS(3)) + ROMX_LOAD("plus2sp1.rom",0x14000,0x4000, CRC(41981d4b) SHA1(ec0d5a158842d20601b4fbeaefc6668db979d0e1), ROM_BIOS(3)) + ROM_SYSTEM_BIOS( 3, "ao", "ZX Spectrum +2c (Andrew Owen)" ) + ROMX_LOAD("plus2c-0.rom",0x10000,0x4000, CRC(bfddf748) SHA1(3eba870bcb2c5efa906f2ca3febe960fc35d66bb), ROM_BIOS(4)) + ROMX_LOAD("plus2c-1.rom",0x14000,0x4000, CRC(fd8552b6) SHA1(5ffcf79f2154ba2cf42cc1d9cb4be93cb5043e73), ROM_BIOS(4)) + ROM_SYSTEM_BIOS( 4, "namco", "ZX Spectrum +2c (Namco)" ) + ROMX_LOAD("pl2namco.rom",0x10000,0x8000, CRC(72a54e75) SHA1(311400157df689450dadc3620f4c4afa960b05ad), ROM_BIOS(5)) +ROM_END + +ROM_START(hc128) + ROM_REGION(0x18000,"maincpu",0) + ROM_LOAD("zx128_0.rom",0x10000,0x4000, CRC(e76799d2) SHA1(4f4b11ec22326280bdb96e3baf9db4b4cb1d02c5)) + ROM_LOAD("hc128.rom", 0x14000,0x4000, CRC(0241e960) SHA1(cea0d14391b9e571460a816088a1c00ecb24afa3)) +ROM_END + +ROM_START(hc2000) + ROM_REGION(0x18000,"maincpu",0) + ROM_SYSTEM_BIOS( 0, "v1", "Version 1" ) + ROMX_LOAD("zx128_0.rom",0x10000,0x4000, CRC(e76799d2) SHA1(4f4b11ec22326280bdb96e3baf9db4b4cb1d02c5), ROM_BIOS(1)) + ROMX_LOAD("hc2000.v1", 0x14000,0x4000, CRC(453c1a5a) SHA1(f8139fc38478691cf44944dc83fd6e70b0f002fb), ROM_BIOS(1)) + ROM_SYSTEM_BIOS( 1, "v2", "Version 2" ) + ROMX_LOAD("zx128_0.rom",0x10000,0x4000, CRC(e76799d2) SHA1(4f4b11ec22326280bdb96e3baf9db4b4cb1d02c5), ROM_BIOS(2)) + ROMX_LOAD("hc2000.v2", 0x14000,0x4000, CRC(65d90464) SHA1(5e2096e6460ff2120c8ada97579fdf82c1199c09), ROM_BIOS(2)) +ROM_END + +/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME */ +COMP( 1986, spec128, 0, 0, spectrum_128, spec_plus, driver_device, 0, "Sinclair Research Ltd", "ZX Spectrum 128" , 0 ) +COMP( 1986, specpls2, spec128, 0, spectrum_128, spec_plus, driver_device, 0, "Amstrad plc", "ZX Spectrum +2" , 0 ) +COMP( 1991, hc128, spec128, 0, spectrum_128, spec_plus, driver_device, 0, "ICE-Felix", "HC-128" , 0 ) +COMP( 1992, hc2000, spec128, 0, spectrum_128, spec_plus, driver_device, 0, "ICE-Felix", "HC-2000" , MACHINE_NOT_WORKING ) |