summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/sinclair/spectrum.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/mame/sinclair/spectrum.cpp')
-rw-r--r--src/mame/sinclair/spectrum.cpp1143
1 files changed, 1143 insertions, 0 deletions
diff --git a/src/mame/sinclair/spectrum.cpp b/src/mame/sinclair/spectrum.cpp
new file mode 100644
index 00000000000..cb92826746d
--- /dev/null
+++ b/src/mame/sinclair/spectrum.cpp
@@ -0,0 +1,1143 @@
+// 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 classified 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 running (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 setting 0xf7 on keyboard
+ input port. Problem occurred for snapshots of
+ some programs where it was read 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
+ completely messed timings.
+25/10/2012 DH - simplified border emulation to be a (manual) partial
+ update with bitmap
+ Removed legacy fff4 interrupt hack, modern version of
+ MAME can handle this just fine
+
+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.
+
+TODO: (the best resource for ZX Spectrum HW informations is the http://www.zxdesign.info/
+ blog, a project devored to reverse-engineer the ZX Spectrum in h/w).
+
+ 1. No contended memory. The different Spectrum models have different contention timings
+ Updated info can be found here: http://scratchpad.wikia.com/wiki/Contended_memory
+ Of course, neither "late timing" contention effects are emulated.
+
+ 2. Russian models (at least Pentagon and Scorpion) reportedly don't have contended memory.
+ Information about screen timings are here: http://www.worldofspectrum.org/rusfaq/
+
+ 3. Similarly, contended I/O is not emulated: http://scratchpad.wikia.com/wiki/Contended_IO
+
+ 4. Finally, the Floating Bus implementation is incomplete: http://scratchpad.wikia.com/wiki/Floating_bus
+ The page hosts a couple of testing programs.
+
+ 5. A NTSC model exists: it's not the Timex, but a plain ZX Spectrum made for the Chilean market:
+ http://scratchpad.wikia.com/wiki/NTSC_Spectrum
+
+ 6. No hi-res colour effects (need contended memory first for accurate timing).
+
+ 7. Keyboard autorepeat is broken.
+
+ 8. Port decoding on all models needs to be checked and, in case, corrected.
+
+ 9. The actual Issue 2/3 effect is a bit more complicated than implemented:
+ http://piters.tripod.com/cassport.htm for an explanation/test suite.
+
+10. Tape formats not supported:
+ .001, .CSW, .LTP, .PZX, .SPC, .STA, .ITM/.PAN, .TAP(Warajevo), .VOC, .ZXS, .ZXT
+
+11. Disk formats not supported:
+ .CPD, .DSK, .FDD, .FDI, .HDF, .IMG, .MDR, .MGT, .SCL, .TRD, .ZXD
+
+12. 128K emulation is not perfect - the 128K machines crash and hang while
+ running quite a lot of games.
+
+13. Disk errors occur on some +3 games.
+
+14. EXROM and HOME cartridges are not emulated on Timex machines.
+
+15. The TK90X and TK95 roms output 0 to port #df on start up. The purpose of this port is unknown
+ (probably display mode as TS2068) and thus is not emulated.
+
+16. Very detailed infos about the ZX Spectrum +3e can be found at
+ http://www.worldofspectrum.org/zxplus3e/
+
+17. The ZX Spectrum is known to support a huge number of peripherals, daisy-chained through its expansion bus.
+ In the earlier part of its life cycle, a common configuration consisted of a "docking station"-type
+ peripheral providing drive controllers (the disk drives were not part of the packages), a game
+ interface (joystick and/or sound chip) and the ZX Printer (which, if present, must terminate the chain).
+
+ Later, all-in-one peripherals became more common. The following list is just a little part of the huge
+ catalog of peripherals available to the ZX Spectrum; however these peripherals are both the most successful
+ and the better documented ones.
+
+ Except when noted, technical and usage manuals are available at http://www.worldofspectrum.org/
+
+------------------------
+Mass storage controllers
+------------------------
+
+ZX Interface 1
+ up to 8 Microdrives
+ 1 RS-232 port
+ 2 ZX Network ports - http://scratchpad.wikia.com/wiki/ZX_Net
+
+Opus Discovery
+ up to 2 Disk drives
+ 1 Centronics port
+ 1 Joystick port (Kempston)
+
+DISCiPLE Interface
+ up to 2 Disk drives
+ 1 Centronics port
+ 2 Joystick ports (RH: Sinclair/Kempston, LH: Sinclair)
+ 2 ZX Network ports
+
+Plus D Interface
+ up to 2 Disk drives
+ 1 Centronics port
+
+Rotronics Wafadrive
+ 2 "Stringy" drives
+ 1 RS-232 port
+ 1 Centronics port
+
+Kempston Disc Interface
+ up to 4 Disk drives (KDOS)
+
+Beta 128 Disk Interface
+ up to 4 Disk drives (TR-DOS)
+
+Philips Disc ROM
+ ???
+
+----------------
+Game controllers
+----------------
+
+ZX Interface 2
+ 2 Joystick ports (Sinclair)
+ 1 ROM slot
+
+Kempston Interface
+ 1 Joystick port (Kempston)
+
+Protek/AGF/Cursor Interface
+ 1 Joystick port (Protek)
+
+Fuller Box
+ 1 Joystick port (Fuller)
+ 1 G1-AY-3-8912 sound chip - the chip is identical to the one present on the 128 model,
+ but the I/O ports are different: http://scratchpad.wikia.com/wiki/AY-3-8912(a) and
+ http://scratchpad.wikia.com/wiki/Timex_2000_series#Sound_Chip
+
+Mikro-Plus Interface
+ 1 Joystick port (Mikrogen)
+ 1 ROM slot - http://www.worldofspectrum.org/showmag.cgi?mag=Crash/Issue19/Pages/Crash1900020.jpg
+
+------------
+Misc devices
+------------
+
+DK'Tronics Light Pen (identical to TK90X light pen)
+
+AMX Mouse
+ Schematics and test software at http://velesoft.speccy.cz/othermouse-cz.htm
+
+Kempston Mouse
+ Schematics and test software at http://8bit.yarek.pl/hardware/zx.mouse/
+
+Currah uSpeech
+ Speech synthesis through allophones (SP0256-AL2)
+
+MGT Messenger
+ Allows connection between ZX Spectrum and SAM Coup??
+
+Soft-ROM
+ A development system board - http://www.wearmouth.demon.co.uk/softrom.htm
+
+Multiface 1/128/+3
+ The classic snapshot interface for ZX Spectrum, 128 and +3 models, with 8K internal RAM.
+
+SamRam
+ A more versatile "Multiface I"-type interface - http://8bit.yarek.pl/upgrade/zx.samram/samram.html
+
+
+*******************************************************************************/
+
+#include "emu.h"
+#include "spectrum.h"
+
+#include "cpu/z80/z80.h"
+#include "spec_snqk.h"
+
+#include "screen.h"
+#include "softlist_dev.h"
+#include "speaker.h"
+
+#include "formats/tzx_cas.h"
+
+
+/****************************************************************************************************/
+/* Spectrum 48k functions */
+
+uint8_t spectrum_state::pre_opcode_fetch_r(offs_t offset)
+{
+ if (is_contended(offset)) content_early();
+
+ /* this allows expansion devices to act upon opcode fetches from MEM addresses
+ for example, interface1 detection fetches requires fetches at 0008 / 0708 to
+ enable paged ROM and then fetches at 0700 to disable it
+ */
+ m_exp->pre_opcode_fetch(offset);
+ uint8_t retval = m_specmem->read8(offset);
+ m_exp->post_opcode_fetch(offset);
+ return retval;
+}
+
+uint8_t spectrum_state::spectrum_data_r(offs_t offset)
+{
+ if (is_contended(offset)) content_early();
+
+ m_exp->pre_data_fetch(offset);
+ uint8_t retval = m_specmem->read8(offset);
+ m_exp->post_data_fetch(offset);
+ return retval;
+}
+
+void spectrum_state::spectrum_data_w(offs_t offset, uint8_t data)
+{
+ if (is_contended(offset)) content_early();
+ if (is_vram_write(offset)) m_screen->update_now();
+
+ m_specmem->write8(offset,data);
+}
+
+void spectrum_state::spectrum_rom_w(offs_t offset, uint8_t data)
+{
+ m_exp->mreq_w(offset, data);
+}
+
+uint8_t spectrum_state::spectrum_rom_r(offs_t offset)
+{
+ return m_exp->romcs()
+ ? m_exp->mreq_r(offset)
+ : m_rom[offset];
+}
+
+/*
+ bit 7-5: not used
+ bit 4: Ear output/Speaker
+ bit 3: MIC/Tape Output
+ bit 2-0: border colour
+*/
+void spectrum_state::spectrum_ula_w(offs_t offset, uint8_t data)
+{
+ if (is_contended(offset)) content_early();
+ content_early(1);
+
+ u8 changed = m_port_fe_data ^ data;
+
+ /* D0-D2: border colour changed? */
+ if (changed & 0x07) m_screen->update_now();
+
+ /* D3-D4: MIC+DAC output state */
+ if (changed & 0x18)
+ {
+ /* D3: write cassette data */
+ if (BIT(changed, 3)) m_cassette->output(BIT(data, 3) ? -1.0 : +1.0);
+
+ m_speaker->level_w(BIT(data, 3, 2));
+ }
+
+ // Some exp devices use ula port unused bits 5-7:
+ // Beta v2/3/plus use bit 7, Beta clones use bits 6 and 7
+ if (m_exp) m_exp->iorq_w(offset, data);
+
+ m_port_fe_data = data;
+}
+
+/* KT: more accurate keyboard reading */
+/* DJR: Spectrum+ keys added */
+uint8_t spectrum_state::spectrum_ula_r(offs_t offset)
+{
+ if (is_contended(offset)) content_early();
+ content_early(1);
+
+ int lines = offset >> 8;
+ int data = 0xff;
+
+ int cs_extra1 = m_io_plus0.read_safe(0x1f) & 0x1f;
+ int cs_extra2 = m_io_plus1.read_safe(0x1f) & 0x1f;
+ int cs_extra3 = m_io_plus2.read_safe(0x1f) & 0x1f;
+ int ss_extra1 = m_io_plus3.read_safe(0x1f) & 0x1f;
+ int ss_extra2 = m_io_plus4.read_safe(0x1f) & 0x1f;
+ int joy1 = m_io_joy1.read_safe(0x1f) & 0x1f;
+ int joy2 = m_io_joy2.read_safe(0x1f) & 0x1f;
+
+ /* expansion port */
+ if (m_exp) data = m_exp->iorq_r(offset);
+
+ /* Caps - V */
+ if ((lines & 1) == 0)
+ {
+ data &= m_io_line0->read();
+ /* CAPS for extra keys */
+ if (cs_extra1 != 0x1f || cs_extra2 != 0x1f || cs_extra3 != 0x1f)
+ data &= ~0x01;
+ }
+
+ /* A - G */
+ if ((lines & 2) == 0)
+ data &= m_io_line1->read();
+
+ /* Q - T */
+ if ((lines & 4) == 0)
+ data &= m_io_line2->read();
+
+ /* 1 - 5 */
+ if ((lines & 8) == 0)
+ data &= m_io_line3->read() & cs_extra1 & joy2;
+
+ /* 6 - 0 */
+ if ((lines & 16) == 0)
+ data &= m_io_line4->read() & cs_extra2 & joy1;
+
+ /* Y - P */
+ if ((lines & 32) == 0)
+ data &= m_io_line5->read() & ss_extra1;
+
+ /* H - Enter */
+ if ((lines & 64) == 0)
+ data &= m_io_line6->read();
+
+ /* B - Space */
+ if ((lines & 128) == 0)
+ {
+ data &= m_io_line7->read() & cs_extra3 & ss_extra2;
+ /* SYMBOL SHIFT for extra keys */
+ if (ss_extra1 != 0x1f || ss_extra2 != 0x1f)
+ data &= ~0x02;
+ }
+
+ data |= (0xe0); /* Set bits 5-7 - as reset above */
+
+ /* cassette input from wav */
+ if (m_cassette->input() > 0.0038 )
+ {
+ data &= ~0x40;
+ }
+
+ /* Issue 2 Spectrums default to having bits 5, 6 & 7 set.
+ Issue 3 Spectrums default to having bits 5 & 7 set and bit 6 reset. */
+ if ((m_io_config->read() & 0x80) == 0)
+ data ^= (0x40);
+
+ return data;
+}
+
+void spectrum_state::spectrum_port_w(offs_t offset, uint8_t data)
+{
+ if (is_contended(offset))
+ {
+ content_early();
+ content_late();
+ }
+
+ // Pass through to expansion device if present
+ if (m_exp->get_card_device())
+ m_exp->iorq_w(offset | 1, data);
+}
+
+uint8_t spectrum_state::spectrum_port_r(offs_t offset)
+{
+ if (is_contended(offset))
+ {
+ content_early();
+ content_late();
+ }
+
+ // Pass through to expansion device if present
+ if (m_exp->get_card_device())
+ return m_exp->iorq_r(offset | 1);
+
+ return floating_bus_r();
+}
+
+uint8_t spectrum_state::spectrum_clone_port_r(offs_t offset)
+{
+ // Pass through to expansion device if present
+ if (m_exp->get_card_device())
+ return m_exp->iorq_r(offset | 1);
+
+ // no floating bus for clones
+ return 0xff;
+}
+
+uint8_t spectrum_state::floating_bus_r()
+{
+ /*
+ * "floating bus"
+ * (cpu can peek at the video bus via odd i/o read, some games use it for timing instead of vblank)
+ *
+ * It seems this trick was found quite late in the life of the original Sinclair models,
+ * then found not to work properly on the later Amstrad models, so was mostly abandoned by devs.
+ * This means most games that use it were released in a relatively small window of mid-late 1986.
+ *
+ * known games:
+ * Arkanoid
+ * Cobra
+ * Sidewize
+ * Short Circuit
+ * Renegade
+ * Terra Cresta
+ *
+ * ...others?
+ *
+ * (Sidewize uses port 0x40ff, others use 0x28ff)
+ *
+ * Note, some were later re-released as "fixed" +2A compatible versions with the floating bus code removed (Arkanoid, Cobra, others?).
+ */
+
+ u8 data = 0xff;
+ u64 vpos = m_screen->vpos();
+
+ // peek into attribute ram when beam is in display area
+ // ula always returns ff when in border area (or h/vblank)
+ rectangle screen = get_screen_area();
+ if (!m_contention_pattern.empty() && vpos >= screen.top() && vpos <= screen.bottom())
+ {
+ u64 now = m_maincpu->total_cycles() - m_int_at;
+ u64 cf = vpos * m_screen->width() * m_maincpu->clock() / m_screen->clock() + m_contention_offset;
+ u64 ct = cf + screen.width() * m_maincpu->clock() / m_screen->clock();
+ if (cf <= now && now < ct)
+ {
+ u64 clocks = now - cf;
+ if (!BIT(clocks, 2))
+ {
+ u16 y = vpos - screen.top();
+ u16 x = (clocks >> 2) + BIT(clocks, 1);
+ data = clocks & 1
+ ? m_screen_location[0x1800 + (((y & 0xf8) << 2) | x)]
+ : m_screen_location[((y & 7) << 8) | ((y & 0x38) << 2) | ((y & 0xc0) << 5) | x];
+ }
+ }
+ }
+
+ return data;
+}
+
+
+/* Memory Maps */
+
+void spectrum_state::spectrum_map(address_map &map)
+{
+ map(0x0000, 0x3fff).rw(FUNC(spectrum_state::spectrum_rom_r), FUNC(spectrum_state::spectrum_rom_w));
+ map(0x4000, 0x5aff).ram().share("video_ram");
+ // installed later depending on ramsize
+ //map(0x5b00, 0x7fff).ram();
+ //map(0x8000, 0xffff).ram();
+}
+
+void spectrum_state::spectrum_opcodes(address_map &map)
+{
+ map(0x0000, 0xffff).r(FUNC(spectrum_state::pre_opcode_fetch_r));
+}
+
+void spectrum_state::spectrum_data(address_map &map)
+{
+ map(0x0000, 0xffff).rw(FUNC(spectrum_state::spectrum_data_r), FUNC(spectrum_state::spectrum_data_w));
+}
+
+// The ula is usually accessed with port 0xfe but is only partially decoded with a single address line (A0),
+// so actually responds to any even numbered port.
+// Exp devices therefore shouldn't use any even numbered ports, but in fact some do:
+// for write, some devices use bits 5-7 as they are not used by the ula (eg. Beta)
+// for read, some devices (eg. Interface II and some other joystick interfaces) simply override the data lines to simulate key presses
+// (series resistors between the ula and cpu/exp slot allow this)
+void spectrum_state::spectrum_io(address_map &map)
+{
+ map(0x00, 0x00).rw(FUNC(spectrum_state::spectrum_ula_r), FUNC(spectrum_state::spectrum_ula_w)).select(0xfffe);
+ map(0x01, 0x01).rw(FUNC(spectrum_state::spectrum_port_r), FUNC(spectrum_state::spectrum_port_w)).select(0xfffe);
+}
+
+void spectrum_state::spectrum_clone_io(address_map &map)
+{
+ map(0x00, 0x00).rw(FUNC(spectrum_state::spectrum_ula_r), FUNC(spectrum_state::spectrum_ula_w)).select(0xfffe);
+ map(0x01, 0x01).rw(FUNC(spectrum_state::spectrum_clone_port_r), FUNC(spectrum_state::spectrum_port_w)).select(0xfffe);
+}
+
+
+/* Input ports */
+
+/****************************************************************************************************
+Spectrum keyboard is quite complicate to emulate. Each key can have 5 or 6 different functions, depending on which input mode we are in:
+
+-------------------------------------------------------------------------------------------------------------------
+ Mode | Sequence on Spectrum | Sequence in MESS
+-------------------------------------------------------------------------------------------------------------------
+ KEY Mode | Simply press the key | Simply press the key
+ CAPS Mode | Press Key + CAPS SHIFT | Press Key + LShift (default mapping)
+ SYMBOL Mode | Press Key + SYMBOL SHIFT | Press Key + RShift (default mapping)
+ EXT Mode | Press CAPS + SYMBOL once, | Press LShift + RShift (to enter EXT Mode),
+ | then press Key | then press Key
+ EXT+Shift Mode | In EXT Mode, press Key + SHIFT | In EXT Mode, press Key + LShift or Key + RShift
+ | (no matter if CAPS and SYMBOL) |
+ BASIC Mode | At BASIC Prompt, press the key | At BASIC Prompt, press the key
+-------------------------------------------------------------------------------------------------------------------
+
+Number Keys are the only keys not having a function in BASIC Mode (hence, they only have 5 functions)
+
+2009-04: Added natural keyboard support. The commented out PORT_CHARs are not reachable in natural keyboard mode (they are entered
+in EXT+Shift Mode on a real Spectrum).
+*/
+
+/* TO DO: replace PORT_CHAR(0xD7) with an 'empty' PORT_CHAR. I used \xD7 (multiplication sign) just as a placeholder. There should be no
+PORT_CHAR for those functions (which have no equivalent on modern keyboards), but something is needed (to correctly have natural support for
+a few keys in SYMBOL Mode) and I found no EMPTY PORT_CHAR in MAME */
+INPUT_PORTS_START( spectrum )
+ /* PORT_NAME = KEY Mode CAPS Mode SYMBOL Mode EXT Mode EXT+Shift Mode BASIC Mode */
+ PORT_START("LINE0") /* 0xFEFE */
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("CAPS SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("z Z : LN BEEP COPY") PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') PORT_CHAR(':')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(u8"x X £ EXP INK CLEAR") PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') PORT_CHAR(U'£')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("c C ? LPRINT PAPER CONT") PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') PORT_CHAR('?')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("v V / LLIST FLASH CLS") PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') PORT_CHAR('/')
+
+ PORT_START("LINE1") /* 0xFDFE */
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("a A STOP READ ~ NEW") PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')// PORT_CHAR('~')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("s S NOT RESTORE | SAVE") PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')// PORT_CHAR('|')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("d D STEP DATA \\ DIM") PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D')// PORT_CHAR('\\')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("f F TO SGN { FOR") PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F')// PORT_CHAR('{')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("g G THEN ABS } GOTO") PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')// PORT_CHAR('}')
+
+ PORT_START("LINE2") /* 0xFBFE */
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("q Q <= SIN ASN PLOT") PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("w W <> COS ACS DRAW") PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("e E >= TAN ATN REM") PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("r R < INT VERIFY RUN") PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') PORT_CHAR('<')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("t T > RND MERGE RAND") PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') PORT_CHAR('>')
+
+ /* interface II uses this port for joystick */
+ PORT_START("LINE3") /* 0xF7FE */
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1 EDIT ! BLUE DEF FN") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2 CAPS LOCK @ RED FN") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3 TRUE VID # MAGENTA LINE") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4 INV VID $ GREEN OPEN#") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5 Left % CYAN CLOSE#") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR(UCHAR_MAMEKEY(LEFT)) PORT_CHAR('%')
+
+ /* protek clashes with interface II! uses 5 = left, 6 = down, 7 = up, 8 = right, 0 = fire */
+ PORT_START("LINE4") /* 0xEFFE */
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0 DEL _ BLACK FORMAT") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(8) PORT_CHAR('_')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9 GRAPH ) POINT") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8 Right ( CAT") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) PORT_CHAR('(')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7 Up ' WHITE ERASE") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR(UCHAR_MAMEKEY(UP)) PORT_CHAR('\'')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6 Down & YELLOW MOVE") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR(UCHAR_MAMEKEY(DOWN)) PORT_CHAR('&')
+
+ PORT_START("LINE5") /* 0xDFFE */
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("p P \" TAB (c) PRINT") PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') PORT_CHAR('"')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("o O ; PEEK OUT POKE") PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') PORT_CHAR(';')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("i I AT CODE IN INPUT") PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("u U OR CHR$ ] IF") PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')// PORT_CHAR(']')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("y Y AND STR$ [ RETURN") PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')// PORT_CHAR('[')
+
+ PORT_START("LINE6") /* 0xBFFE */
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ENTER") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("l L = USR ATTR LET") PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') PORT_CHAR('=')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("k K + LEN SCREEN$ LIST") PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') PORT_CHAR('+')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("j J - VAL VAL$ LOAD") PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') PORT_CHAR('-')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("h H ^ SQR CIRCLE GOSUB") PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') PORT_CHAR('^')
+
+ PORT_START("LINE7") /* 0x7FFE */
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SPACE") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SYMBOL SHIFT") PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_2)
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("m M . PI INVERSE PAUSE") PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') PORT_CHAR('.')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("n N , INKEY$ OVER NEXT") PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') PORT_CHAR(',')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b B * BIN BRIGHT BORDER") PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') PORT_CHAR('*')
+
+ PORT_START("NMI")
+ PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("NMI") PORT_CODE(KEYCODE_F12)
+
+ PORT_START("CONFIG")
+ PORT_CONFNAME( 0x80, 0x00, "Hardware Version" )
+ PORT_CONFSETTING( 0x00, "Issue 2" )
+ PORT_CONFSETTING( 0x80, "Issue 3" )
+ PORT_BIT(0x7f, IP_ACTIVE_LOW, IPT_UNUSED)
+INPUT_PORTS_END
+
+/* Machine initialization */
+void spectrum_state::init_spectrum()
+{
+ m_specmem->space(AS_PROGRAM).install_ram(0x5b00, m_ram->size() + 0x3fff, m_ram->pointer() + 0x1b00);
+}
+
+void spectrum_state::machine_start()
+{
+ save_item(NAME(m_port_fe_data));
+ save_item(NAME(m_int_at));
+}
+
+void spectrum_state::machine_reset()
+{
+ /* Initial value/behaviour of FE port is not confirmed. Startup of real devices produce 'random' border
+ color which need to be investigated. */
+ m_port_fe_data = -1;
+ m_port_7ffd_data = -1;
+ m_port_1ffd_data = -1;
+ m_irq_on_timer->adjust(attotime::never);
+ m_irq_off_timer->adjust(attotime::never);
+}
+
+/* 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 */
+ {STEP8(0, 1)}, /* x offsets */
+ {STEP8(0, 8)}, /* y offsets */
+ 8*8 /* every char takes 8 bytes */
+};
+
+static GFXDECODE_START( gfx_spectrum )
+ GFXDECODE_ENTRY( "maincpu", 0x3d00, spectrum_charlayout, 7, 8 )
+GFXDECODE_END
+
+TIMER_CALLBACK_MEMBER(spectrum_state::irq_on)
+{
+ m_int_at = m_maincpu->total_cycles();
+ m_int_at -= m_maincpu->attotime_to_cycles(m_maincpu->local_time() - machine().time());
+ m_maincpu->set_input_line(0, ASSERT_LINE);
+ m_irq_off_timer->adjust(m_maincpu->clocks_to_attotime(32));
+}
+
+TIMER_CALLBACK_MEMBER(spectrum_state::irq_off)
+{
+ m_maincpu->set_input_line(0, CLEAR_LINE);
+}
+
+INTERRUPT_GEN_MEMBER(spectrum_state::spec_interrupt)
+{
+ m_irq_on_timer->adjust(m_screen->time_until_pos(0, get_screen_area().left()));
+}
+
+void spectrum_state::spectrum_common(machine_config &config)
+{
+ /* basic machine hardware */
+ Z80(config, m_maincpu, X1 / 4); /* This is verified only for the ZX Spectrum. Other clones are reported to have different clocks */
+ m_maincpu->set_m1_map(&spectrum_state::spectrum_opcodes);
+ m_maincpu->set_memory_map(&spectrum_state::spectrum_data);
+ m_maincpu->set_io_map(&spectrum_state::spectrum_io);
+ m_maincpu->set_vblank_int("screen", FUNC(spectrum_state::spec_interrupt));
+ m_maincpu->nomreq_cb().set(FUNC(spectrum_state::spectrum_nomreq));
+
+ ADDRESS_MAP_BANK(config, m_specmem).set_map(&spectrum_state::spectrum_map).set_options(ENDIANNESS_LITTLE, 8, 16, 0x10000);
+
+#if 1 // change to 0 in order to get working "Proceed 1" VC1541 FDC
+ config.set_maximum_quantum(attotime::from_hz(60));
+#else
+ config.set_perfect_quantum(m_maincpu);
+#endif
+
+ /* video hardware */
+ SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
+
+ rectangle visarea = { get_screen_area().left() - SPEC_LEFT_BORDER, get_screen_area().right() + SPEC_RIGHT_BORDER,
+ get_screen_area().top() - SPEC_TOP_BORDER, get_screen_area().bottom() + SPEC_BOTTOM_BORDER };
+ m_screen->set_raw(X1 / 2, SPEC_CYCLES_PER_LINE * 2, SPEC_UNSEEN_LINES + SPEC_SCREEN_HEIGHT, visarea);
+ m_screen->set_screen_update(FUNC(spectrum_state::screen_update_spectrum));
+ m_screen->set_palette("palette");
+
+ PALETTE(config, "palette", FUNC(spectrum_state::spectrum_palette), 16);
+ GFXDECODE(config, "gfxdecode", "palette", gfx_spectrum);
+
+ /* sound hardware */
+ SPEAKER(config, "mono").front_center();
+ SPEAKER_SOUND(config, m_speaker).add_route(ALL_OUTPUTS, "mono", 0.50);
+ static const double speaker_levels[4] = { 0.0, 0.33, 0.66, 1.0 };
+ m_speaker->set_levels(4, speaker_levels);
+
+ /* expansion port */
+ SPECTRUM_EXPANSION_SLOT(config, m_exp, spectrum_expansion_devices, "kempjoy");
+ m_exp->irq_handler().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
+ m_exp->nmi_handler().set_inputline(m_maincpu, INPUT_LINE_NMI);
+ m_exp->fb_r_handler().set(FUNC(spectrum_state::floating_bus_r));
+
+ /* devices */
+ SNAPSHOT(config, "snapshot", "ach,frz,plusd,prg,sem,sit,sna,snp,snx,sp,z80,zx").set_load_callback(FUNC(spectrum_state::snapshot_cb));
+ QUICKLOAD(config, "quickload", "raw,scr", attotime::from_seconds(2)).set_load_callback(FUNC(spectrum_state::quickload_cb)); // The delay prevents the screen from being cleared by the RAM test at boot
+
+ CASSETTE(config, m_cassette);
+ m_cassette->set_formats(tzx_cassette_formats);
+ m_cassette->set_default_state(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_ENABLED);
+ m_cassette->add_route(ALL_OUTPUTS, "mono", 0.05);
+ m_cassette->set_interface("spectrum_cass");
+
+ SOFTWARE_LIST(config, "cass_list").set_original("spectrum_cass");
+}
+
+void spectrum_state::spectrum(machine_config &config)
+{
+ spectrum_common(config);
+
+ /* internal ram */
+ RAM(config, m_ram).set_default_size("48K").set_extra_options("16K").set_default_value(0xff);
+ // This configuration is verified only for the original ZX Spectrum.
+ // It's likely, but still to be checked, that many clones were produced only
+ // in the 48k configuration, while others have extra memory (80k, 128K, 1024K)
+ // available via bankswitching.
+}
+
+void spectrum_state::spectrum_clone(machine_config &config)
+{
+ spectrum(config);
+
+ // no floating bus
+ m_maincpu->set_io_map(&spectrum_state::spectrum_clone_io);
+ m_exp->fb_r_handler().set([]() { return 0xff; });
+}
+
+/***************************************************************************
+
+ Game driver(s)
+
+***************************************************************************/
+
+ROM_START(spectrum)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_SYSTEM_BIOS(0, "en", "English")
+ ROMX_LOAD("spectrum.rom", 0x0000, 0x4000, CRC(ddee531f) SHA1(5ea7c2b824672e914525d1d5c419d71b84a426a2), ROM_BIOS(0))
+ ROM_SYSTEM_BIOS(1, "sp", "Spanish")
+ ROMX_LOAD("48e.rom", 0x0000, 0x4000, CRC(f051746e) SHA1(9e535e2e24231ccb65e33d107f6d0ceb23e99477), ROM_BIOS(1))
+ ROM_SYSTEM_BIOS(2, "p", "Prototype") // breadboard PCB with a maze of wires underneath, keyboard has handwritten labels
+ ROMX_LOAD("0,1.eprom1", 0x0000, 0x2000, CRC(6b807b7a) SHA1(7d14f1929c086b0954edb386f02b06ed283b602a), ROM_BIOS(2))
+ ROMX_LOAD("2,3.eprom2", 0x2000, 0x2000, CRC(f54a389b) SHA1(eab62eda635a56c24132022947fdeefcd18215f5), ROM_BIOS(2))
+ ROM_SYSTEM_BIOS(3, "bsrom118", "BusySoft Upgrade v1.18")
+ ROMX_LOAD("bsrom118.rom", 0x0000, 0x4000, CRC(1511cddb) SHA1(ab3c36daad4325c1d3b907b6dc9a14af483d14ec), ROM_BIOS(3))
+ ROM_SYSTEM_BIOS(4, "bsrom140", "BusySoft Upgrade v1.40")
+ ROMX_LOAD("bsrom140.rom", 0x0000, 0x4000, CRC(07017c6d) SHA1(2ee2dbe6ab96b60d7af1d6cb763b299374c21776), ROM_BIOS(4))
+ ROM_SYSTEM_BIOS(5, "groot", "De Groot's Upgrade")
+ ROMX_LOAD("groot.rom", 0x0000, 0x4000, CRC(abf18c45) SHA1(51165cde68e218512d3145467074bc7e786bf307), ROM_BIOS(5))
+ ROM_SYSTEM_BIOS(6, "48turbo", "48 Turbo")
+ ROMX_LOAD("48turbo.rom", 0x0000, 0x4000, CRC(56189781) SHA1(e62a431b0938af414b7ab8b1349a18b3c4407f70), ROM_BIOS(6))
+ ROM_SYSTEM_BIOS(7, "psycho", "Maly's Psycho Upgrade")
+ ROMX_LOAD("psycho.rom", 0x0000, 0x4000, CRC(cd60b589) SHA1(0853e25857d51dd41b20a6dbc8e80f028c5befaa), ROM_BIOS(7))
+ ROM_SYSTEM_BIOS(8, "turbo23", "Turbo 2.3")
+ ROMX_LOAD("turbo2_3.rom", 0x0000, 0x4000, CRC(fd3b0413) SHA1(84ea64af06adaf05e68abe1d69454b4fc6888505), ROM_BIOS(8))
+ ROM_SYSTEM_BIOS(9, "turbo44", "Turbo 4.4")
+ ROMX_LOAD("turbo4_4.rom", 0x0000, 0x4000, CRC(338b6e87) SHA1(21ad93ffe41a4458704c866cca2754f066f6a560), ROM_BIOS(9))
+ ROM_SYSTEM_BIOS(10, "imc", "Ian Collier's Upgrade")
+ ROMX_LOAD("imc.rom", 0x0000, 0x4000, CRC(d1be99ee) SHA1(dee814271c4d51de257d88128acdb324fb1d1d0d), ROM_BIOS(10))
+ ROM_SYSTEM_BIOS(11, "plus4", "ZX Spectrum +4")
+ ROMX_LOAD("plus4.rom",0x0000,0x4000, CRC(7e0f47cb) SHA1(c103e89ef58e6ade0c01cea0247b332623bd9a30), ROM_BIOS(11))
+ ROM_SYSTEM_BIOS(12, "deutsch", "German unofficial (Andrew Owen)")
+ ROMX_LOAD("deutsch.rom",0x0000,0x4000, CRC(1a9190f4) SHA1(795c20324311dd5a56300e6e4ec49b0a694ac0b3), ROM_BIOS(12))
+ ROM_SYSTEM_BIOS(13, "hdt", "HDT-ISO HEX-DEC-TEXT")
+ ROMX_LOAD("hdt-iso.rom",0x0000,0x4000, CRC(b81c570c) SHA1(2a9745ba3b369a84c4913c98ede66ec87cb8aec1), ROM_BIOS(13))
+ ROM_SYSTEM_BIOS(14, "sc", "The Sea Change Minimal ROM V1.78")
+ ROMX_LOAD("sc01.rom",0x0000,0x4000, CRC(73b4057a) SHA1(c58ff44a28db47400f09ed362ca0527591218136), ROM_BIOS(14))
+ ROM_SYSTEM_BIOS(15, "gosh", "GOSH Wonderful ZX Spectrum ROM V1.32")
+ ROMX_LOAD("gw03.rom",0x0000,0x4000, CRC(5585d7c2) SHA1(a701c3d4b698f7d2be537dc6f79e06e4dbc95929), ROM_BIOS(15))
+ ROM_SYSTEM_BIOS(16, "1986es", "1986ES Snapshot")
+ ROMX_LOAD("1986es.rom",0x0000,0x4000, CRC(9e0fdaaa) SHA1(f9d23f25640c51bcaa63e21ed5dd66bb2d5f63d4), ROM_BIOS(16))
+ ROM_SYSTEM_BIOS(17, "jgh", "JGH ROM V0.74 (C) J.G.Harston")
+ ROMX_LOAD("jgh.rom",0x0000,0x4000, CRC(7224138e) SHA1(d7f02ed66455f1c08ac0c864c7038a92a88ba94a), ROM_BIOS(17))
+ ROM_SYSTEM_BIOS(18, "iso22", "ISO ROM V2.2")
+ ROMX_LOAD("isomoje.rom",0x0000,0x4000, CRC(62ab3640) SHA1(04adbdb1380d6ccd4ab26ddd61b9ccbba462a60f), ROM_BIOS(18))
+ ROM_SYSTEM_BIOS(19, "iso8", "ISO ROM 8")
+ ROMX_LOAD("iso8bm.rom",0x0000,0x4000, CRC(43e9c2fd) SHA1(5752e6f789769475711b91e0a75911fa5232c767), ROM_BIOS(19))
+ ROM_SYSTEM_BIOS(20, "diagv28", "DiagROM v1.28")
+ ROMX_LOAD("diagrom.v28",0x0000,0x4000, CRC(aadf967e) SHA1(6fbdb11e475499655df36343a22f15d67f578165), ROM_BIOS(20))
+ ROM_SYSTEM_BIOS(21, "diagv31", "DiagROM v1.31")
+ ROMX_LOAD("diagrom.v31",0x0000,0x4000, CRC(cddbb11e) SHA1(3ed203034fe1562ee7216fad06309d3f7033a967), ROM_BIOS(21))
+ ROM_SYSTEM_BIOS(22, "diagv33", "DiagROM v1.33")
+ ROMX_LOAD("diagrom.v33",0x0000,0x4000, CRC(0fb080e1) SHA1(222f535ae277d0b8ce6c27b75319da9c45f8cadc), ROM_BIOS(22))
+ ROM_SYSTEM_BIOS(23, "diagv34", "DiagROM v1.34")
+ ROMX_LOAD("diagrom.v34",0x0000,0x4000, CRC(50478f29) SHA1(1e55af6e7bb24090ce052e7536e91f92492fe168), ROM_BIOS(23))
+ ROM_SYSTEM_BIOS(24, "diagv35", "DiagROM v1.35")
+ ROMX_LOAD("diagrom.v35",0x0000,0x4000, CRC(c869b642) SHA1(61eb786249a207ea57cdea6bb01fcd0b95c218f2), ROM_BIOS(24))
+ ROM_SYSTEM_BIOS(25, "diagv47", "DiagROM v1.47")
+ ROMX_LOAD("diagrom.v47",0x0000,0x4000, CRC(be329fc0) SHA1(24dc875753e729452f1ff941d2e0ae49f9031bc3), ROM_BIOS(25))
+ ROM_SYSTEM_BIOS(26, "diagv50", "DiagROM v1.50")
+ ROMX_LOAD("diagrom.v50",0x0000,0x4000, CRC(054a2d6a) SHA1(2fa6f3b31d7bb610df78be5c4c80537cf6e5911d), ROM_BIOS(26))
+ ROM_SYSTEM_BIOS(27, "diagv51", "DiagROM v1.51")
+ ROMX_LOAD("diagrom.v51",0x0000,0x4000, CRC(83034df6) SHA1(e57b2c8a8e3563ea02a20eecd1d4cb6be9f9c2df), ROM_BIOS(27))
+ ROM_SYSTEM_BIOS(28, "diagv56", "DiagROM v1.56")
+ ROMX_LOAD("diagrom.v56",0x0000,0x4000, CRC(0ed22f7a) SHA1(37caf0bbc2d023ca5afaa12b3856ac90dbc83c51), ROM_BIOS(28))
+ ROM_SYSTEM_BIOS(29, "diagv59", "DiagROM v1.59")
+ ROMX_LOAD("diagrom.v59",0x0000,0x4000, CRC(90e2ca5a) SHA1(dac1f877cbfdd516a8bf6336d8eff5902bd06438), ROM_BIOS(29))
+ ROM_SYSTEM_BIOS(30, "alford37", "Brian Alford's Test ROM v0.37")
+ ROMX_LOAD("testromv037.bin", 0x0000,0x4000, CRC(a7ea3d1c) SHA1(f699b73abfb1ab53c063ac02ac6283705864c734), ROM_BIOS(30))
+ROM_END
+
+ROM_START(specide)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("zxide.rom", 0x0000, 0x4000, CRC(bd48db54) SHA1(54c2aa958902b5395c260770a0b25c7ba5685de9))
+ROM_END
+
+ROM_START(spec80k)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("80-lec.rom", 0x0000, 0x4000, CRC(5b5c92b1) SHA1(bb7a77d66e95d2e28ebb610e543c065e0d428619))
+ROM_END
+
+/* Official Sinclair licensed Spanish clone */
+
+ROM_START(inves)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("inves.rom",0x0000,0x4000, CRC(8ff7a4d1) SHA1(d020440638aff4d39467128413ef795677be9c23))
+ROM_END
+
+/* Brazilian clones */
+
+ROM_START(tk90x)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("tk90x.rom",0x0000,0x4000, CRC(3e785f6f) SHA1(9a943a008be13194fb006bddffa7d22d2277813f))
+ROM_END
+
+ROM_START(tk95)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("tk95.rom",0x0000,0x4000, CRC(17368e07) SHA1(94edc401d43b0e9a9cdc1d35de4b6462dc414ab3))
+ROM_END
+
+/* Romanian clones */
+
+ROM_START(hc85)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("hc85.rom",0x0000,0x4000, CRC(3ab60fb5) SHA1(a4189db0bcdf8b39ed782b398828efb408fc4817))
+ROM_END
+
+ROM_START(hc88)
+ ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
+ ROM_LOAD( "hc88.bin", 0x0000, 0x0800, CRC(33be5134) SHA1(b15a6e7085710de8b818e42d329707cb737627e3))
+ROM_END
+
+ROM_START(hc90)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("hc90.rom",0x0000,0x4000, CRC(78c14d9a) SHA1(25ef81905bed90497a749770170c24632efb2039))
+ROM_END
+
+ROM_START(hc91)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("hc91.rom",0x0000,0x4000, CRC(8bf53761) SHA1(967d5179ba2823e9c8dd9ddfb0430465aaddb554))
+ROM_END
+
+ROM_START(hc2000)
+ // HC-91 with internal fdd, 64KB ram, dual-os (BASIC, CP/M), built-in Interface I
+ // user manual states "16KB BASIC rom, 16KB CP/M rom, 10KB Interface I rom"
+ // some pcb have 2x 27256 eproms, some have single 28-pin socket (27512?)
+ // for 2 eprom model, seems #1 is combined BASIC+CP/M, #2 is intf1
+ // BASIC should boot first, then optionally CP/M can be booted with RANDOMIZE USR 14446
+ // CP/M can use 56KB ram, fdc is UM8272A, disks are 3.5" 720KB
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_SYSTEM_BIOS( 0, "basicv1", "BASIC v1" )
+ ROMX_LOAD("hc2000.v1", 0x0000,0x4000, CRC(453c1a5a) SHA1(f8139fc38478691cf44944dc83fd6e70b0f002fb), ROM_BIOS(0))
+ ROM_SYSTEM_BIOS( 1, "basicv2", "BASIC v2" )
+ ROMX_LOAD("hc2000.v2", 0x0000,0x4000, CRC(65d90464) SHA1(5e2096e6460ff2120c8ada97579fdf82c1199c09), ROM_BIOS(1))
+ ROM_SYSTEM_BIOS( 2, "cpmv1", "CP/M v1" ) // not working
+ ROMX_LOAD("hc2000c.v1", 0x0000,0x4000, CRC(aaa373fe) SHA1(55a30d99c37c86c55ce6c8ecbe593b81d9819e90), ROM_BIOS(2))
+ ROM_SYSTEM_BIOS( 3, "cpmv2", "CP/M v2" ) // not working, data arranged differently to v1
+ ROMX_LOAD("hc2000c.v2", 0x0000,0x2000, CRC(69c757fe) SHA1(c2bcab2398fb493a31cf6c18ff1e4e9f55690d41), ROM_BIOS(3))
+ ROM_REGION(0x8000,"opt",0) // Interface 1 roms
+ ROM_LOAD_OPTIONAL("hc2000i.v12", 0x4000, 0x4000, CRC(182d5c0c) SHA1(b76d2bebcd938238f790e395859d0d237637d33e)) // 190892 v1, v2 pcb
+ ROM_LOAD_OPTIONAL("hc2000i.vx", 0x0000, 0x4000, CRC(39967a21) SHA1(e190001ae318982ed31f6c02b4201ca9126a739a)) // 221191 unknown pcb ver
+ROM_END
+
+ROM_START(cip03)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("cip03.rom",0x0000,0x4000, CRC(c7d0cd3c) SHA1(811055b44fc74076137e2bf8db206b2a70287cc2))
+ROM_END
+
+ROM_START(cip01)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("cip01.rom",0x0000,0x4000, CRC(0516a329) SHA1(4e3e0c5719a64d3b4fb224db499b4bef7d146917))
+ROM_END
+
+ROM_START(jet)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("jet.rom",0x0000,0x4000, CRC(e56a7d11) SHA1(e76be9ee71bae6aa1c2ff969276fb599ed68cb50))
+ROM_END
+
+ROM_START(cobrasp)
+ ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
+ ROM_SYSTEM_BIOS(0, "v1", "V1")
+ ROMX_LOAD( "boot64k_v1.bin", 0x0000, 0x0800, CRC(a54aae6d) SHA1(8f5134ce24aea59065ed166ad79e864e17ce812f), ROM_BIOS(0))
+ ROM_SYSTEM_BIOS(1, "v2", "V2")
+ ROMX_LOAD( "boot64k_v2.bin", 0x0000, 0x0800, CRC(ee91cc89) SHA1(37dea7fe0734068adf99b91fdcbf3119095c350d), ROM_BIOS(1))
+ROM_END
+
+ROM_START(cobra80)
+ ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
+ ROM_SYSTEM_BIOS(0, "v1", "V1")
+ ROMX_LOAD( "boot80k_v1.bin", 0x0000, 0x0800, CRC(f42d2342) SHA1(8aa1b3b056e311674a051ffc6a49af60cae409f3), ROM_BIOS(0))
+ ROM_SYSTEM_BIOS(1, "v2", "V2")
+ ROMX_LOAD( "boot80k_v2.bin", 0x0000, 0x0800, CRC(df6bd954) SHA1(5b858b59e697d0368ea631ead14f5b2aa7954ccd), ROM_BIOS(1))
+ ROM_SYSTEM_BIOS(2, "v3", "V3")
+ ROMX_LOAD( "boot80k_v3.bin", 0x0000, 0x0800, CRC(8580494c) SHA1(91af3f3fa50f2071f8ff081536bdf7e21e9823d9), ROM_BIOS(2))
+ROM_END
+
+/* Czechoslovakian clones*/
+
+/* TODO: need to add memory handling for 80K RAM */
+
+ROM_START(dgama87)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("dgama87.rom",0x0000,0x4000, CRC(43104909) SHA1(f62d1f3f35fda467cae468e890995614f6ec2357))
+ROM_END
+
+ROM_START(dgama88)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("dgama88.rom",0x0000,0x4000, CRC(4ec7e078) SHA1(09a91f85e82efa7f974d1b88c69636a02063d563))
+ROM_END
+
+ROM_START(dgama89)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_SYSTEM_BIOS(0, "default", "Original")
+ ROMX_LOAD("dgama89.rom",0x0000,0x4000, CRC(45c29401) SHA1(8466a9da0169666210ccff5d43376d70bae0ae9b), ROM_BIOS(0))
+ ROM_SYSTEM_BIOS(1, "g81", "Gama 81")
+ ROMX_LOAD("g81.rom",0x0000,0x4000, CRC(c169a63b) SHA1(71652005c2e7a4301caa7e95ae989b69cb5a6a0d), ROM_BIOS(1))
+ ROM_SYSTEM_BIOS(2, "iso", "ISO")
+ ROMX_LOAD("iso.rom",0x0000,0x4000, CRC(2ee3a992) SHA1(2e39995dd032036d33a6dd88a38b750057bca19d), ROM_BIOS(2))
+ ROM_SYSTEM_BIOS(3, "isopolak", "ISO Polak")
+ ROMX_LOAD("isopolak.rom",0x0000,0x4000, CRC(5e3f1f66) SHA1(61713117c944fc6afcb96c647bdba5ad36fd6a4b), ROM_BIOS(3))
+ROM_END
+
+ROM_START(didakt90)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("didakt90.rom",0x0000,0x4000, CRC(76f2db1e) SHA1(daee355a8ee58bc406873c1dd81eecb6161dd4bd))
+ROM_END
+
+ROM_START(didakm91)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("didakm91.rom",0x0000,0x4000, CRC(beab69b8) SHA1(71d4d1a05fb936f616bcb05c3a276f79343ecd4d))
+ROM_END
+
+ROM_START(didakm92)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("didakm92.bin",0x0000,0x4000, CRC(57264d4f) SHA1(23644fe949cbf527747959d07b72db01de378c4c))
+ROM_END
+
+ROM_START(didaktk)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("didaktk.rom",0x0000,0x4000, CRC(8ec8a625) SHA1(cba35517d33a5c97e3d9110f12a417c6c5cdeca8))
+ROM_END
+
+ROM_START(didakm93)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("didakm93.rom",0x0000,0x4000, CRC(ec274b1b) SHA1(a3470d8d1a996ee2a1ffff8bd8044da6e907e07e))
+ROM_END
+
+ROM_START(mistrum)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("mistrum.rom",0x0000,0x4000, CRC(d496103e) SHA1(cca1c5b059dc3a29ca4282e8621e34a65efaa1a3))
+ROM_END
+
+/* Russian clones */
+
+ROM_START(bk08)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD( "right.bin", 0x0000, 0x2000, CRC(fb253544) SHA1(6b79487e3013d0acdea8d224b21c937e88105a2f) )
+ ROM_LOAD( "left.bin", 0x2000, 0x2000, CRC(a092b5f3) SHA1(06b8d98a398f61daf6604c68bcee4596c283c2cd) )
+ROM_END
+
+ROM_START(blitzs)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("blitz.rom",0x0000,0x4000, CRC(91e535a8) SHA1(14f09d45dc3803cbdb05c33adb28eb12dbad9dd0))
+ROM_END
+
+ROM_START(orizon)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("orizon.rom",0x0000,0x4000, CRC(ed4d9787) SHA1(3e8b29862e06be03344393c320a64a109fd9aff5))
+ROM_END
+
+ROM_START(quorum48)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("quorum48.rom",0x0000,0x4000, CRC(48085b0e) SHA1(8e01581643f7bdfa773f68207a6437911b631e53))
+ROM_END
+
+ROM_START(magic6)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("magic6.rom",0x0000,0x4000, CRC(cb63ae06) SHA1(533ad1f50534e6bdeec50eb5a9a4976c3d010dc7))
+ROM_END
+
+ROM_START(compani1)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("compani1.rom",0x0000,0x4000, CRC(bcfa6068) SHA1(40074b55c91a947698598e9d6ac5b8495e8cc840))
+ROM_END
+
+ROM_START(spektrbk)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("spektr-bk001.rom", 0x0000, 0x4000, CRC(c011eecc) SHA1(35fdc8cd083e50452655997a997873627b131520))
+ROM_END
+
+ROM_START(sintez2)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD( "sntez2.bin", 0x000000, 0x004000, CRC(490ded3a) SHA1(a1c6c18e1d93761c0891291ec75191f54929ed7b) )
+ROM_END
+
+ROM_START(zvezda)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD( "2764-near-cpu_red.bin", 0x0000, 0x2000, CRC(a4ae4938) SHA1(ea1763b9dee29381ddcf882fbc4e404ba5366942))
+ ROM_LOAD( "2764-far-cpu_blue.bin", 0x2000, 0x2000, CRC(ebab64bc) SHA1(8c98a8b6e927b02cf602c20a1b50838e60f7785b))
+ROM_END
+
+ROM_START(santaka2)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD( "01.01.d29", 0x0000, 0x0800, CRC(537db879) SHA1(601c69c8f9c77cb00ccd653a0ac0922044c13c86))
+ ROM_LOAD( "01.02.d30", 0x0800, 0x0800, CRC(6b5178bc) SHA1(ef5417e24cb80b3f417054a3ef89af5bbef94598))
+ ROM_LOAD( "01.03.d31", 0x1000, 0x0800, CRC(379c0032) SHA1(a10ebcd8b990ce26ec54dadf5c70b9c6eab7d314))
+ ROM_LOAD( "01.04.d32", 0x1800, 0x0800, CRC(765fc052) SHA1(40085c34fccb9b2274fe0887efa532e3771ffaf7))
+ ROM_LOAD( "01.05.d33", 0x2000, 0x0800, CRC(c177cd1e) SHA1(8dc8f0e086bdcdc1c60b9e7a1b4a1a6799e8f0bd))
+ ROM_LOAD( "01.06.d34", 0x2800, 0x0800, CRC(69072150) SHA1(0edd6db5e5b6f65921ec5c87d6d0d4ef3b3a9c03))
+ ROM_LOAD( "01.07.d35", 0x3000, 0x0800, CRC(2cb5126d) SHA1(1b951ca8172ce2e7912df9ab3713f48d247311a4))
+ ROM_LOAD( "01.08.d36", 0x3800, 0x0800, CRC(4d6e54cb) SHA1(7f01b9b0790064024012430fe47710e4fb905360))
+ROM_END
+
+/* Any clone known to have the same "floating bus" behaviour as official Sinclair models should be changed to use the "spectrum" machine */
+
+// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
+COMP( 1982, spectrum, 0, 0, spectrum, spectrum, spectrum_state, init_spectrum, "Sinclair Research Ltd", "ZX Spectrum" , 0 )
+COMP( 1987, spec80k, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "<unknown>", "ZX Spectrum 80K", MACHINE_UNOFFICIAL )
+COMP( 1995, specide, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "<unknown>", "ZX Spectrum IDE", MACHINE_UNOFFICIAL )
+COMP( 1986, inves, spectrum, 0, spectrum_clone, spec_plus, spectrum_state, init_spectrum, "Investronica", "Inves Spectrum 48K+", 0 )
+COMP( 1985, tk90x, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "Micro Digital", "TK 90X Color Computer", 0 )
+COMP( 1986, tk95, spectrum, 0, spectrum_clone, spec_plus, spectrum_state, init_spectrum, "Micro Digital", "TK 95 Color Computer", 0 )
+COMP( 1985, hc85, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "ICE-Felix", "HC-85", 0 )
+COMP( 1988, hc88, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "ICE-Felix", "HC-88", MACHINE_NOT_WORKING )
+COMP( 1990, hc90, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "ICE-Felix", "HC-90", 0 )
+COMP( 1991, hc91, spectrum, 0, spectrum_clone, spec_plus, spectrum_state, init_spectrum, "ICE-Felix", "HC-91", 0 )
+COMP( 1992, hc2000, spectrum, 0, spectrum_clone, spec_plus, spectrum_state, init_spectrum, "ICE-Felix", "HC-2000", MACHINE_NOT_WORKING ) // dual-os, only BASIC roms working
+COMP( 1988, cobrasp, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "ITCI", "Cobra (ITCI)", MACHINE_NOT_WORKING )
+COMP( 1988, cobra80, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "ITCI", "Cobra 80K (ITCI)", MACHINE_NOT_WORKING )
+COMP( 1987, cip01, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "Electronica", "CIP-01", 0 ) // keyboard should be spectrum, but image was not clear
+COMP( 1988, cip03, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "Electronica", "CIP-03", 0 ) // keyboard should be spectrum, but image was not clear
+COMP( 1990, jet, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "Electromagnetica", "JET", 0 ) // keyboard should be spectrum, but image was not clear
+COMP( 1987, dgama87, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "Didaktik Skalica", "Didaktik Gama 87", 0 )
+COMP( 1988, dgama88, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "Didaktik Skalica", "Didaktik Gama 88", 0 )
+COMP( 1989, dgama89, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "Didaktik Skalica", "Didaktik Gama 89", 0 )
+COMP( 1990, didakt90, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "Didaktik Skalica", "Didaktik 90", 0 )
+COMP( 1991, didakm91, spectrum, 0, spectrum_clone, spec_plus, spectrum_state, init_spectrum, "Didaktik Skalica", "Didaktik M 91", 0 )
+COMP( 1992, didakm92, spectrum, 0, spectrum_clone, spec_plus, spectrum_state, init_spectrum, "Didaktik Skalica", "Didaktik M 92", 0 )
+COMP( 1992, didaktk, spectrum, 0, spectrum_clone, spec_plus, spectrum_state, init_spectrum, "Didaktik Skalica", "Didaktik Kompakt", 0 )
+COMP( 1993, didakm93, spectrum, 0, spectrum_clone, spec_plus, spectrum_state, init_spectrum, "Didaktik Skalica", "Didaktik M 93", 0 )
+COMP( 1988, mistrum, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "Amaterske RADIO", "Mistrum", 0 ) // keyboard could be spectrum in some models (since it was a build-yourself design)
+COMP( 198?, bk08, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "Orel", "BK-08", 0 )
+COMP( 1990, blitzs, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "<unknown>", "Blic", 0 ) // no keyboard images found
+COMP( 199?, orizon, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "<unknown>", "Orizon-Micro", 0 ) // no keyboard images found
+COMP( 1993, quorum48, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "<unknown>", "Kvorum 48K", MACHINE_NOT_WORKING )
+COMP( 1993, magic6, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "<unknown>", "Magic 6", MACHINE_NOT_WORKING ) // keyboard should be spectrum, but image was not clear
+COMP( 1990, compani1, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "<unknown>", "Kompanion 1", 0 ) // no keyboard images found
+COMP( 1990, spektrbk, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "<unknown>", "Spektr BK-001", 0 )
+COMP( 1989, sintez2, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "Signal", "Sintez 2", 0 )
+COMP( 1990, zvezda, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "<unknown>", "Zvezda", 0 )
+COMP( 1991, santaka2, spectrum, 0, spectrum_clone, spectrum, spectrum_state, init_spectrum, "<unknown>", "Santaka-002", 0 )