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Diffstat (limited to 'src/mess/drivers/zx.c')
-rw-r--r--src/mess/drivers/zx.c567
1 files changed, 567 insertions, 0 deletions
diff --git a/src/mess/drivers/zx.c b/src/mess/drivers/zx.c
new file mode 100644
index 00000000000..fb7f935437b
--- /dev/null
+++ b/src/mess/drivers/zx.c
@@ -0,0 +1,567 @@
+/***************************************************************************
+ zx.c
+
+ Original driver by:
+ Juergen Buchmueller <pullmoll@t-online.de>, Dec 1999
+
+ Fixes and additions by Krzysztof Strzecha:
+ 07.06.2004 Tape loading added. Some cleanups of debug code.
+ Fixed stupid bug in timings (vblank duration).
+ GAME_NOT_WORKING flag removed.
+ 29.05.2004 CPU clock, number of scanlines, vblank duration corrected.
+ Some cleanups. Two non-working TESTDRIVERS added.
+ 14.05.2004 Finally fixed and readded.
+
+ Changes done by Robbbert in Jan 2009:
+ - Added the NTSC/PAL diode to all systems except pc8300 which doesn't support it.
+ - Applied NTSC timings to pc8300 only, all others depend on the diode.
+ - Many keyboard fixes, and descriptions added to keys.
+ - Fixed .O files from causing an access violation.
+ - Enabled cassette saving.
+ - Many general fixes to pow3000/lambda.
+ - Added sound to pc8300/pow3000/lambda.
+
+ 24/12/2009 (Robbbert)
+ - Added rom mirror, this fixes ringo470
+ - Added back the F4 character display
+
+ 14/08/2011 (Robbbert)
+ - Modernised.
+
+ To do / problems:
+ - Some memory areas are not mirrored as they should.
+ - Video hardware is not fully emulated, so it does not support pseudo hi-res and hi-res modes.
+ - The screen in pc8300/pow3000/lambda jumps when you type something.
+ - lambda/pow3000 32k memory pack is unemulated, because where is the upper 16k mirror going to be?
+ - h4th and tree4th need their address maps worked out (eg, the stack is set to FB80)
+ - lambda/pow3000 joystick, connected in parallel with the 4,R,F,7,U keys, but the directions are unknown.
+ - Many games don't work.
+
+
+****************************************************************************/
+
+#include "includes/zx.h"
+
+/* Memory Maps */
+
+static ADDRESS_MAP_START( zx80_map, AS_PROGRAM, 8, zx_state )
+ AM_RANGE(0x0000, 0x1fff) AM_ROM AM_MIRROR(0x2000)
+ AM_RANGE(0xc000, 0xffff) AM_RAM_READ(zx_ram_r)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( zx80_io_map, AS_IO, 8, zx_state )
+ AM_RANGE(0x0000, 0xffff) AM_READWRITE(zx80_io_r, zx80_io_w)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( zx81_io_map, AS_IO, 8, zx_state )
+ AM_RANGE(0x0000, 0xffff) AM_READWRITE(zx81_io_r, zx81_io_w)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( pc8300_io_map, AS_IO, 8, zx_state )
+ AM_RANGE(0x0000, 0xffff) AM_READWRITE(pc8300_io_r, zx81_io_w)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( pow3000_io_map, AS_IO, 8, zx_state )
+ AM_RANGE(0x0000, 0xffff) AM_READWRITE(pow3000_io_r, zx81_io_w)
+ADDRESS_MAP_END
+
+/* Input Ports */
+
+static INPUT_PORTS_START( zx80 )
+/* PORT_NAME = Key Mode (Press Key) Shift Mode (Press Key+Shift) BASIC Mode (Press Key at BASIC) */
+/* Some keys (e.g. A,S,D,F,G etc.) produce glyphs when used in Shift Mode. MESS currently cannot show
+these functions in Input (This System) menu, hence we live some empty space in the menu */
+ PORT_START("ROW0")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Z :") PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR(':')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("X ; CLEAR") PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR(';')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C ? CLS") PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR('?')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("V / GOSUB") PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR('/')
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW1")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A LIST") PORT_CODE(KEYCODE_A) PORT_CHAR('A')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("S STOP") PORT_CODE(KEYCODE_S) PORT_CHAR('S')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D DIM") PORT_CODE(KEYCODE_D) PORT_CHAR('D')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F FOR") PORT_CODE(KEYCODE_F) PORT_CHAR('F')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("G GOTO") PORT_CODE(KEYCODE_G) PORT_CHAR('G')
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW2")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Q NEW") PORT_CODE(KEYCODE_Q) PORT_CHAR('Q')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("W LOAD") PORT_CODE(KEYCODE_W) PORT_CHAR('W')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E SAVE") PORT_CODE(KEYCODE_E) PORT_CHAR('E')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("R RUN") PORT_CODE(KEYCODE_R) PORT_CHAR('R')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("T CONT") PORT_CODE(KEYCODE_T) PORT_CHAR('T')
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW3")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1 NOT") PORT_CODE(KEYCODE_1) PORT_CHAR('1')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2 AND") PORT_CODE(KEYCODE_2) PORT_CHAR('2')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3 THEN") PORT_CODE(KEYCODE_3) PORT_CHAR('3')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4 TO") PORT_CODE(KEYCODE_4) PORT_CHAR('4')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5 Left") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR(UCHAR_MAMEKEY(LEFT))
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW4")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0 RUBOUT") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(8)
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9 HOME") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(UCHAR_MAMEKEY(HOME))
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8 Right") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7 Up") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR(UCHAR_MAMEKEY(UP))
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6 Down") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR(UCHAR_MAMEKEY(DOWN))
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW5")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("P *") PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR('*')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("O ) PRINT") PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR(')')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("I ( INPUT") PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('(')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("U $ IF") PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_CHAR('$')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Y \" REM") PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_CHAR('"')
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW6")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("NEWLINE EDIT") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("L =") PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR('=')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("K + LET") PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR('+')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("J - RAND") PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('-')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("H ** POKE") PORT_CODE(KEYCODE_H) PORT_CHAR('H')
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW7")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SPACE \xC2\xA3 BREAK") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') PORT_CHAR('\xA3')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(". ,") PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR(',')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("M >") PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR('>')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("N < NEXT") PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR('<')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B OR RET") PORT_CODE(KEYCODE_B) PORT_CHAR('B')
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("CONFIG") /* config diode on main board */
+ PORT_CONFNAME( 0x40, 0x40, "TV system")
+ PORT_CONFSETTING( 0x00, "NTSC")
+ PORT_CONFSETTING( 0x40, "PAL")
+INPUT_PORTS_END
+
+static INPUT_PORTS_START( pc8300 )
+/* PORT_NAME = Key Mode (Press Key) Shift Mode (Press Key+Shift) BASIC Mode (Press Key at BASIC) */
+ PORT_START("ROW0")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Z :") PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR(':')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("X ;") PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR(';')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C ?") PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR('?')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("V /") PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR('/')
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW1")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A STOP NEW") PORT_CODE(KEYCODE_A) PORT_CHAR('A')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("S LPRINT SAVE") PORT_CODE(KEYCODE_S) PORT_CHAR('S')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D SLOW DIM") PORT_CODE(KEYCODE_D) PORT_CHAR('D')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F FAST FOR") PORT_CODE(KEYCODE_F) PORT_CHAR('F')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("G LLIST GOTO") PORT_CODE(KEYCODE_G) PORT_CHAR('G')
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW2")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Q \"\" PLOT") PORT_CODE(KEYCODE_Q) PORT_CHAR('Q')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("W OR UNPLOT") PORT_CODE(KEYCODE_W) PORT_CHAR('W')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E STEP REM") PORT_CODE(KEYCODE_E) PORT_CHAR('E')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("R <= RUN") PORT_CODE(KEYCODE_R) PORT_CHAR('R')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("T <> RAND") PORT_CODE(KEYCODE_T) PORT_CHAR('T')
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW3")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1 EDIT") PORT_CODE(KEYCODE_1) PORT_CHAR('1')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2 AND") PORT_CODE(KEYCODE_2) PORT_CHAR('2')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3 THEN") PORT_CODE(KEYCODE_3) PORT_CHAR('3')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4 TO") PORT_CODE(KEYCODE_4) PORT_CHAR('4')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5 Left") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR(UCHAR_MAMEKEY(LEFT))
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW4")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0 DELETE") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(8)
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9 GRAPHICS") PORT_CODE(KEYCODE_9) PORT_CHAR('9')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8 Right") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7 Up") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR(UCHAR_MAMEKEY(UP))
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6 Down") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR(UCHAR_MAMEKEY(DOWN))
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW5")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("P \" PRINT") PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR('"')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("O ) POKE") PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR(')')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("I ( INPUT") PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('(')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("U $ IF") PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_CHAR('$')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Y >= RETURN") PORT_CODE(KEYCODE_Y) PORT_CHAR('Y')
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW6")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ENTER FUNCTION") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("L = LET") PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR('=')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("K + LIST") PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR('+')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("J - LOAD") PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('-')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("H ** GOSUB") PORT_CODE(KEYCODE_H) PORT_CHAR('H')
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW7")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SPACE \xC2\xA3") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') PORT_CHAR('\xA3')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(". ,") PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR(',')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("M > PAUSE") PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR('>')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("N < NEXT") PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR('<')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B * SCROLL") PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHAR('*')
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+INPUT_PORTS_END
+
+static INPUT_PORTS_START( zx81 )
+ PORT_INCLUDE(pc8300)
+
+ PORT_START("CONFIG") /* config diode on main board */
+ PORT_CONFNAME( 0x40, 0x40, "TV system")
+ PORT_CONFSETTING( 0x00, "NTSC")
+ PORT_CONFSETTING( 0x40, "PAL")
+INPUT_PORTS_END
+
+static INPUT_PORTS_START( pow3000 )
+ PORT_START("ROW0")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Z PRINT") PORT_CODE(KEYCODE_Z) PORT_CHAR('Z')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("X AUTO") PORT_CODE(KEYCODE_X) PORT_CHAR('X')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C Up") PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR(UCHAR_MAMEKEY(UP))
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("V Down") PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR(UCHAR_MAMEKEY(DOWN))
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW1")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A ASN") PORT_CODE(KEYCODE_A) PORT_CHAR('A')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("S ACS") PORT_CODE(KEYCODE_S) PORT_CHAR('S')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D ATN") PORT_CODE(KEYCODE_D) PORT_CHAR('D')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F EXP") PORT_CODE(KEYCODE_F) PORT_CHAR('F')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("G ABS") PORT_CODE(KEYCODE_G) PORT_CHAR('G')
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW2")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Q SIN") PORT_CODE(KEYCODE_Q) PORT_CHAR('Q')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("W COS") PORT_CODE(KEYCODE_W) PORT_CHAR('W')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E TAN") PORT_CODE(KEYCODE_E) PORT_CHAR('E')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("R LOG") PORT_CODE(KEYCODE_R) PORT_CHAR('R')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("T SGN") PORT_CODE(KEYCODE_T) PORT_CHAR('T')
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW3")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1") PORT_CODE(KEYCODE_1) PORT_CHAR('1')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2") PORT_CODE(KEYCODE_2) PORT_CHAR('2')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3") PORT_CODE(KEYCODE_3) PORT_CHAR('3')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4 $") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5 \"") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('"')
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW4")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0 =") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR('=')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9 )") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8 (") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7 ,") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR(',')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6 ;") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR(';')
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW5")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("P >") PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR('>')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("O <") PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR('<')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("I PI") PORT_CODE(KEYCODE_I) PORT_CHAR('I')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("U RND") PORT_CODE(KEYCODE_U) PORT_CHAR('U')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Y SQR") PORT_CODE(KEYCODE_Y) PORT_CHAR('Y')
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW6")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ENTER GRAPHICS") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("L +") PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR('+')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("K -") PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR('-')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("J *") PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('*')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("H /") PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_CHAR('/')
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("ROW7")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SPACE BREAK") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(". DELETE") PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR(8)
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("M EDIT") PORT_CODE(KEYCODE_M) PORT_CHAR('M')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("N Right") PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B Left") PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHAR(UCHAR_MAMEKEY(LEFT))
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("CONFIG") /* config diode on main board */
+ PORT_CONFNAME( 0x01, 0x00, "TV system")
+ PORT_CONFSETTING( 0x00, "NTSC")
+ PORT_CONFSETTING( 0x01, "PAL")
+INPUT_PORTS_END
+
+
+/* F4 character display */
+
+static const gfx_layout zx_gfx_layout =
+{
+ 8, 8, /* 8x8 pixels */
+ 64, /* 64 codes */
+ 1, /* 1 bit 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 /* eight bytes per code */
+};
+
+
+/* Graphics Decode Information */
+
+static GFXDECODE_START( zx80 )
+ GFXDECODE_ENTRY( "maincpu", 0x0e00, zx_gfx_layout, 0, 2 )
+GFXDECODE_END
+
+static GFXDECODE_START( zx81 )
+ GFXDECODE_ENTRY( "maincpu", 0x1e00, zx_gfx_layout, 0, 2 )
+GFXDECODE_END
+
+static GFXDECODE_START( pc8300 )
+ GFXDECODE_ENTRY( "gfx1", 0, zx_gfx_layout, 0, 2 )
+GFXDECODE_END
+
+
+
+/* Palette Initialization */
+
+
+static PALETTE_INIT( zx80 )
+{
+ palette_set_color(machine,0,RGB_WHITE); /* white */
+ palette_set_color(machine,1,RGB_BLACK); /* black */
+ palette_set_color(machine,2,RGB_BLACK); /* black */
+ palette_set_color(machine,3,RGB_WHITE); /* white */
+}
+
+static PALETTE_INIT( ts1000 )
+{
+ palette_set_color(machine,0,MAKE_RGB(64, 244, 244)); /* cyan */
+ palette_set_color(machine,1,RGB_BLACK); /* black */
+ palette_set_color(machine,2,RGB_BLACK); /* black */
+ palette_set_color(machine,3,MAKE_RGB(64, 244, 244)); /* cyan */
+}
+
+
+#define ZX81_CPU_CLOCK 3250000
+#define ZX81_CYCLES_PER_SCANLINE 207
+#define ZX81_PIXELS_PER_SCANLINE 256
+#define ZX81_CYCLES_PER_VBLANK 1235
+#define ZX81_VBLANK_DURATION (1.0*ZX81_CYCLES_PER_VBLANK/ZX81_CPU_CLOCK*1000*1000)
+
+#define ZX81_PAL_SCANLINES 304
+#define ZX81_PAL_FRAMES_PER_SECOND (1.0*ZX81_CPU_CLOCK/(ZX81_PAL_SCANLINES*ZX81_CYCLES_PER_SCANLINE+ZX81_CYCLES_PER_VBLANK))
+
+#define ZX81_NTSC_SCANLINES 256
+#define ZX81_NTSC_FRAMES_PER_SECOND (1.0*ZX81_CPU_CLOCK/(ZX81_NTSC_SCANLINES*ZX81_CYCLES_PER_SCANLINE+ZX81_CYCLES_PER_VBLANK))
+
+/* Machine Drivers */
+
+static const struct CassetteOptions zx81_cassette_options = {
+ 1, /* channels */
+ 16, /* bits per sample */
+ 44100 /* sample frequency */
+};
+
+static const cassette_interface zx80_cassette_interface =
+{
+ zx80_o_format,
+ &zx81_cassette_options,
+ (cassette_state)(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED),
+ NULL
+};
+
+static const cassette_interface zx81_cassette_interface =
+{
+ zx81_p_format,
+ &zx81_cassette_options,
+ (cassette_state)(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED),
+ NULL,
+ NULL
+};
+
+
+static MACHINE_CONFIG_START( zx80, zx_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", Z80, ZX81_CPU_CLOCK)
+ MCFG_CPU_PROGRAM_MAP(zx80_map)
+ MCFG_CPU_IO_MAP(zx80_io_map)
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_REFRESH_RATE(ZX81_PAL_FRAMES_PER_SECOND)
+ MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(ZX81_VBLANK_DURATION))
+
+ MCFG_MACHINE_RESET(zx80)
+
+ /* video hardware */
+ MCFG_SCREEN_UPDATE_DRIVER(zx_state, screen_update)
+ MCFG_SCREEN_SIZE(ZX81_PIXELS_PER_SCANLINE, ZX81_PAL_SCANLINES)
+ MCFG_SCREEN_VISIBLE_AREA(0, ZX81_PIXELS_PER_SCANLINE-1, 0, ZX81_PAL_SCANLINES-1)
+ MCFG_SCREEN_VBLANK_STATIC(zx)
+
+ MCFG_GFXDECODE(zx80)
+ MCFG_PALETTE_LENGTH(4)
+ MCFG_PALETTE_INIT(zx80)
+
+ MCFG_VIDEO_START(zx)
+
+ /* sound hardware */
+ MCFG_SPEAKER_STANDARD_MONO("mono")
+ MCFG_SOUND_ADD(SPEAKER_TAG, SPEAKER_SOUND, 0) /* Used by pc8300/lambda/pow3000 */
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.75)
+ MCFG_SOUND_WAVE_ADD(WAVE_TAG, CASSETTE_TAG)
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
+
+ MCFG_CASSETTE_ADD( CASSETTE_TAG, zx80_cassette_interface )
+
+ /* internal ram */
+ MCFG_RAM_ADD(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("1K")
+ MCFG_RAM_EXTRA_OPTIONS("16K")
+MACHINE_CONFIG_END
+
+static MACHINE_CONFIG_DERIVED( zx81, zx80 )
+
+ MCFG_CPU_MODIFY("maincpu")
+ MCFG_CPU_IO_MAP(zx81_io_map)
+
+ MCFG_GFXDECODE(zx81)
+
+ MCFG_CASSETTE_MODIFY( CASSETTE_TAG, zx81_cassette_interface )
+MACHINE_CONFIG_END
+
+static MACHINE_CONFIG_DERIVED( ts1000, zx81 )
+
+ MCFG_PALETTE_INIT(ts1000)
+MACHINE_CONFIG_END
+
+static MACHINE_CONFIG_DERIVED( ts1500, ts1000 )
+
+ /* internal ram */
+ MCFG_RAM_MODIFY(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("16K")
+MACHINE_CONFIG_END
+
+static MACHINE_CONFIG_DERIVED( pc8300, zx81 )
+
+ MCFG_CPU_MODIFY("maincpu")
+ MCFG_CPU_IO_MAP(pc8300_io_map)
+
+ MCFG_MACHINE_RESET(pc8300)
+
+ MCFG_SCREEN_MODIFY("screen")
+ MCFG_SCREEN_REFRESH_RATE(ZX81_NTSC_FRAMES_PER_SECOND)
+ MCFG_SCREEN_SIZE(ZX81_PIXELS_PER_SCANLINE, ZX81_NTSC_SCANLINES)
+ MCFG_SCREEN_VISIBLE_AREA(0, ZX81_PIXELS_PER_SCANLINE-1, 0, ZX81_NTSC_SCANLINES-1)
+
+ MCFG_GFXDECODE(pc8300)
+ MCFG_PALETTE_INIT(zx80)
+
+ /* internal ram */
+ MCFG_RAM_MODIFY(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("16K")
+MACHINE_CONFIG_END
+
+static MACHINE_CONFIG_DERIVED( pow3000, zx81 )
+
+ MCFG_CPU_MODIFY("maincpu")
+ MCFG_CPU_IO_MAP(pow3000_io_map)
+
+ MCFG_MACHINE_RESET(pow3000)
+
+ MCFG_GFXDECODE(pc8300)
+ MCFG_PALETTE_INIT(zx80)
+
+ /* internal ram */
+ MCFG_RAM_MODIFY(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("2K")
+ MCFG_RAM_EXTRA_OPTIONS("16K")
+MACHINE_CONFIG_END
+
+
+/* ROMs */
+
+ROM_START(zx80)
+ ROM_REGION( 0x10000, "maincpu",0 )
+ ROM_SYSTEM_BIOS(0, "default", "BASIC")
+ ROMX_LOAD( "zx80.rom", 0x0000, 0x1000, CRC(4c7fc597) SHA1(b6769a3197c77009e0933e038c15b43cf4c98c7a), ROM_BIOS(1) )
+ ROM_SYSTEM_BIOS(1, "aszmic", "ASZMIC")
+ ROMX_LOAD( "aszmic.rom", 0x0000, 0x1000, CRC(6c123536) SHA1(720867cbfafafc8c7438bbc325a77eaef571e5c0), ROM_BIOS(2) )
+ROM_END
+
+ROM_START(zx81)
+ ROM_REGION( 0x10000, "maincpu",0 )
+ ROM_SYSTEM_BIOS(0, "3rd", "3rd rev.")
+ ROMX_LOAD( "zx81b.rom", 0x0000, 0x2000, CRC(522c37b8) SHA1(c6d8e06cb936989f6e1cc7a56d1f092da854a515), ROM_BIOS(1) )
+ ROM_SYSTEM_BIOS(1, "1st", "1st rev.")
+ ROMX_LOAD( "zx81.rom", 0x0000, 0x2000, CRC(fcbbd617) SHA1(a0ade36540561cc1691bb6f0c42ceae12484a102), ROM_BIOS(2) )
+ ROM_SYSTEM_BIOS(2, "2nd", "2nd rev.")
+ ROMX_LOAD( "zx81a.rom", 0x0000, 0x2000, CRC(4b1dd6eb) SHA1(7b143ee964e9ada89d1f9e88f0bd48d919184cfc), ROM_BIOS(3) )
+ ROM_SYSTEM_BIOS(3, "hforth", "Forth by David Husband")
+ ROMX_LOAD( "h4th.rom", 0x0000, 0x2000, CRC(257d5a32) SHA1(03809a6b464609ff924f7e55a85eef875cd47ae8), ROM_BIOS(4) )
+ ROM_SYSTEM_BIOS(4, "tforth", "Forth by Tree Systems")
+ ROMX_LOAD( "tree4th.rom", 0x0000, 0x2000, CRC(71616238) SHA1(3ee15779e03482b10fc59eb4df2446376c56b00d), ROM_BIOS(5) )
+ROM_END
+
+ROM_START(ts1000)
+ ROM_REGION( 0x10000, "maincpu",0 )
+ ROM_LOAD( "zx81a.rom", 0x0000, 0x2000, CRC(4b1dd6eb) SHA1(7b143ee964e9ada89d1f9e88f0bd48d919184cfc) )
+ROM_END
+
+ROM_START(ts1500)
+ ROM_REGION( 0x10000, "maincpu",0 )
+ ROM_LOAD( "ts1500.rom", 0x0000, 0x2000, CRC(7dd19c48) SHA1(3eb437359221b4406d236085ec66fa02278e7495) )
+ROM_END
+
+ROM_START(ringo470)
+ ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
+ ROM_LOAD( "ringo470.rom", 0x0000, 0x2000, CRC(b9c5abec) SHA1(191c4994adfffe4f83b98dc3959dde2724b1dbac) )
+ROM_END
+
+ROM_START(pc8300)
+ ROM_REGION( 0x10000, "maincpu",0 )
+ ROM_LOAD( "8300_org.rom", 0x0000, 0x2000, CRC(a350f2b1) SHA1(6a9be484556cc27a9cd9d71085d2027c6243333f) )
+
+ ROM_REGION( 0x200, "gfx1", 0 )
+ ROM_LOAD( "8300_fnt.bin", 0x0000, 0x0200, CRC(6bd0408c) SHA1(34a7a5afee511dc8bba28eccf305c873d80a557a) )
+ROM_END
+
+ROM_START(pow3000)
+ ROM_REGION( 0x10000, "maincpu",0 )
+ ROM_LOAD( "pow3000.rom", 0x0000, 0x2000, CRC(8a49b2c3) SHA1(9b22daf2f3a991aa6a358ef95b091654c3ca1bdf) )
+
+ ROM_REGION( 0x200, "gfx1", 0 )
+ ROM_LOAD( "pow3000.chr", 0x0000, 0x0200, CRC(1c42fe46) SHA1(5b30ba77c8f57065d106db69964c9ff2e4221760) )
+ROM_END
+
+ROM_START(lambda)
+ ROM_REGION( 0x10000, "maincpu",0 )
+ ROM_LOAD( "lambda.rom", 0x0000, 0x2000, CRC(8a49b2c3) SHA1(9b22daf2f3a991aa6a358ef95b091654c3ca1bdf) )
+
+ ROM_REGION( 0x200, "gfx1", 0 )
+ ROM_LOAD( "8300_fnt.bin", 0x0000, 0x0200, CRC(6bd0408c) SHA1(34a7a5afee511dc8bba28eccf305c873d80a557a) )
+ROM_END
+
+ROM_START( tk85 )
+ ROM_REGION( 0x10000, "maincpu", 0 )
+ ROM_LOAD( "tk85.rom", 0x0000, 0x2800, CRC(8972d756) SHA1(7b961a1733fc047eb682150a32e17bca10a018d2) )
+ROM_END
+
+/* This homebrew has 192k of RAM and 32k of ROM via bankswitching. One of the primary bankswitching lines is /M1,
+ which is not emulated by MAME's z80. */
+ROM_START( zx97 )
+ ROM_REGION( 0x10000, "maincpu", 0 )
+ ROM_LOAD( "zx97.rom", 0x0000, 0x2000, CRC(5cf49744) SHA1(b2a486efdc7b2bc3dc8e5a441ea5532bfa3207bd) )
+ ROM_IGNORE( 0x6000 ) /* Unemulated bankswitched part */
+ROM_END
+
+/* Game Drivers */
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
+COMP( 1980, zx80, 0, 0, zx80, zx80, zx_state, zx, "Sinclair Research Ltd", "ZX-80", 0 )
+COMP( 1981, zx81, 0, 0, zx81, zx81, zx_state, zx, "Sinclair Research Ltd", "ZX-81", 0 )
+COMP( 1982, ts1000, zx81, 0, ts1000, zx81, zx_state, zx, "Timex Sinclair", "Timex Sinclair 1000", 0 )
+COMP( 1983, ts1500, zx81, 0, ts1500, zx81, zx_state, zx, "Timex Sinclair", "Timex Sinclair 1500", 0 )
+COMP( 1983, tk85, zx81, 0, ts1000, zx81, zx_state, zx, "Microdigital", "TK85", 0 )
+COMP( 1983, ringo470, zx81, 0, ts1000, zx81, zx_state, zx, "Ritas do Brasil Ltda", "Ringo 470", 0 )
+COMP( 1984, pc8300, zx81, 0, pc8300, pc8300, zx_state, zx, "Your Computer", "PC8300", 0 )
+COMP( 1983, pow3000, zx81, 0, pow3000, pow3000, zx_state, zx, "Creon Enterprises", "Power 3000", 0 )
+COMP( 1982, lambda, zx81, 0, pow3000, pow3000, zx_state, zx, "Lambda Electronics Ltd", "Lambda 8300", 0 )
+COMP( 1997, zx97, zx81, 0, zx81, zx81, zx_state, zx, "Wilf Rigter", "ZX97", GAME_NOT_WORKING | GAME_UNOFFICIAL )