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author Miodrag Milanovic <mmicko@gmail.com>2015-11-08 12:56:12 +0100
committer Miodrag Milanovic <mmicko@gmail.com>2015-11-08 12:56:12 +0100
commit7c19aac60e12d6f5ea301bdb34d7826a01e0b06f (patch)
treef310d86aa2c6bfc19d115307dedde4eb0cd52dad /src/mame/drivers/ti74.cpp
parenta57b46ae933badd7441ce1644711dbb851e2b504 (diff)
Rename *.c -> *.cpp in our source (nw)
Diffstat (limited to 'src/mame/drivers/ti74.cpp')
-rw-r--r--src/mame/drivers/ti74.cpp606
1 files changed, 606 insertions, 0 deletions
diff --git a/src/mame/drivers/ti74.cpp b/src/mame/drivers/ti74.cpp
new file mode 100644
index 00000000000..c38abbe5096
--- /dev/null
+++ b/src/mame/drivers/ti74.cpp
@@ -0,0 +1,606 @@
+// license:BSD-3-Clause
+// copyright-holders:hap
+/***************************************************************************
+
+ Texas Instruments TI-74 BASICALC
+ Texas Instruments TI-95 PROCALC
+ hardware family: CC-40 -> TI-74 BASICALC -> TI-95 PROCALC
+
+ TI-74 PCB layout:
+ note: TI-95 PCB is nearly the same, just with a different size LCD screen,
+ its CPU is labeled C70011, and the system ROM is labeled HN61256PC95.
+
+ DOCK-BUS
+ --||||||||---
+ C == |
+ a == |
+ r == HN61256 |
+ t == ----------------------------
+ | |
+ ------- C70009 4MHz |
+ | HM6264 RC4193N |
+ | |
+ | |
+ | |
+ | |
+ ---------------||||||||||||||||||||||||-------
+ ||||||||||||||||||||||||
+ ---------------||||||||||||||||||||||||-------
+ | *HD44100H *HD44780A00 |
+ | |
+ | |
+ | |
+ | |
+ ---------- |
+ | ----------------------------------|
+ | | ||
+ | | LCD screen ||
+ | | ||
+ | ----------------------------------|
+ -------------------------------------
+
+ IC1 HN61256PC93 - Hitachi DIP-28 32KB CMOS Mask PROM
+ IC2 C70009 - Texas Instruments TMS70C46, 54 pins. Basically a TMS70C40 with some TI custom I/O mods.
+ 128 bytes internal RAM, 4KB internal ROM, running at max 4MHz.
+ IC3 HM6264LP-15 - Hitachi 8KB SRAM (battery backed)
+ RC4193N - Micropower Switching Regulator
+ HD44100H - 60-pin QFP Hitachi HD44100 LCD Driver
+ HD44780A00 - 80-pin TFP Hitachi HD44780 LCD Controller
+
+ * - indicates that it's on the other side of the PCB
+
+
+ Overall, the hardware is very similar to TI CC-40. A lot has been shuffled around
+ to cut down on complexity (and probably for protection too). To reduce power usage
+ even more, the OS often idles while waiting for any keypress that triggers an interrupt
+ and wakes the processor up.
+
+ The machine is powered by 4 AAA batteries. These will also save internal RAM,
+ provided that the machine is turned off properly.
+
+
+ TODO:
+ - it runs too fast due to missing clock divider emulation in TMS70C46
+ - external ram cartridge
+ - DOCK-BUS interface and peripherals, compatible with both TI-74 and TI-95
+ * CI-7 cassette interface
+ * PC-324 thermal printer
+ (+ old Hexbus devices can be connected via a converter cable)
+
+***************************************************************************/
+
+#include "emu.h"
+#include "cpu/tms7000/tms7000.h"
+#include "video/hd44780.h"
+#include "machine/nvram.h"
+#include "bus/generic/slot.h"
+#include "bus/generic/carts.h"
+#include "softlist.h"
+
+#include "ti74.lh"
+#include "ti95.lh"
+
+
+class ti74_state : public driver_device
+{
+public:
+ ti74_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag),
+ m_maincpu(*this, "maincpu"),
+ m_cart(*this, "cartslot"),
+ m_key_matrix(*this, "IN"),
+ m_battery_inp(*this, "BATTERY")
+ { }
+
+ required_device<tms70c46_device> m_maincpu;
+ required_device<generic_slot_device> m_cart;
+ required_ioport_array<8> m_key_matrix;
+ required_ioport m_battery_inp;
+
+ UINT8 m_key_select;
+ UINT8 m_power;
+
+ void update_lcd_indicator(UINT8 y, UINT8 x, int state);
+ void update_battery_status(int state);
+
+ DECLARE_READ8_MEMBER(keyboard_r);
+ DECLARE_WRITE8_MEMBER(keyboard_w);
+ DECLARE_WRITE8_MEMBER(bankswitch_w);
+
+ virtual void machine_reset();
+ virtual void machine_start();
+ DECLARE_PALETTE_INIT(ti74);
+ DECLARE_INPUT_CHANGED_MEMBER(battery_status_changed);
+ DECLARE_DEVICE_IMAGE_LOAD_MEMBER(ti74_cartridge);
+};
+
+
+
+/***************************************************************************
+
+ File Handling
+
+***************************************************************************/
+
+DEVICE_IMAGE_LOAD_MEMBER(ti74_state, ti74_cartridge)
+{
+ UINT32 size = m_cart->common_get_size("rom");
+
+ // max size is 32KB
+ if (size > 0x8000)
+ {
+ image.seterror(IMAGE_ERROR_UNSPECIFIED, "Invalid file size");
+ return IMAGE_INIT_FAIL;
+ }
+
+ m_cart->rom_alloc(size, GENERIC_ROM8_WIDTH, ENDIANNESS_LITTLE);
+ m_cart->common_load_rom(m_cart->get_rom_base(), size, "rom");
+
+ return IMAGE_INIT_PASS;
+}
+
+
+
+/***************************************************************************
+
+ Video
+
+***************************************************************************/
+
+PALETTE_INIT_MEMBER(ti74_state, ti74)
+{
+ palette.set_pen_color(0, rgb_t(138, 146, 148)); // background
+ palette.set_pen_color(1, rgb_t(92, 83, 88)); // lcd pixel on
+ palette.set_pen_color(2, rgb_t(131, 136, 139)); // lcd pixel off
+}
+
+void ti74_state::update_lcd_indicator(UINT8 y, UINT8 x, int state)
+{
+ // TI-74 ref._________________...
+ // output# |10 11 12 13 14 2 3 4
+ // above | < SHIFT CTL FN I/O UCL _LOW >
+ // ---- raw lcd screen here ----
+ // under | BASIC CALC DEG RAD GRAD STAT
+ // output# | 63 64 1 62 53 54
+ //
+ // TI-95 ref._________________...
+ // output# | 40 43 41 44 42 12 11 10/13/14 0 1 2
+ // above | _LOW _ERROR 2nd INV ALPHA LC INS DEGRAD HEX OCT I/O
+ // screen- | _P{70} <{71} RUN{3}
+ // area . SYS{4}
+ output_set_lamp_value(y * 10 + x, state);
+}
+
+static HD44780_PIXEL_UPDATE(ti74_pixel_update)
+{
+ // char size is 5x7 + cursor
+ if (x > 4 || y > 7)
+ return;
+
+ if (line == 1 && pos == 15)
+ {
+ // the last char is used to control the 14 lcd indicators
+ ti74_state *driver_state = device.machine().driver_data<ti74_state>();
+ driver_state->update_lcd_indicator(y, x, state);
+ }
+ else if (line < 2 && pos < 16)
+ {
+ // internal: 2*16, external: 1*31
+ if (y == 7) y++; // the cursor is slightly below the character
+ bitmap.pix16(1 + y, 1 + line*16*6 + pos*6 + x) = state ? 1 : 2;
+ }
+}
+
+static HD44780_PIXEL_UPDATE(ti95_pixel_update)
+{
+ // char size is 5x7 + cursor
+ if (x > 4 || y > 7)
+ return;
+
+ if (line == 1 && pos == 15)
+ {
+ // the last char is used to control the 17 lcd indicators
+ ti74_state *driver_state = device.machine().driver_data<ti74_state>();
+ driver_state->update_lcd_indicator(y, x, state);
+ }
+ else if (line == 0 && pos < 16)
+ {
+ // 1st line is simply 16 chars
+ if (y == 7) y++; // the cursor is slightly below the char
+ bitmap.pix16(10 + y, 1 + pos*6 + x) = state ? 1 : 2;
+ }
+ else if (line == 1 && pos < 15 && y < 7)
+ {
+ // 2nd line is segmented into 5 groups of 3 chars, there is no cursor
+ // note: the chars are smaller than on the 1st line (this is handled in .lay file)
+ const int gap = 9;
+ int group = pos / 3;
+ bitmap.pix16(1 + y, 1 + group*gap + pos*6 + x) = state ? 1 : 2;
+ }
+}
+
+
+
+/***************************************************************************
+
+ I/O, Memory Maps
+
+***************************************************************************/
+
+READ8_MEMBER(ti74_state::keyboard_r)
+{
+ UINT8 ret = 0;
+
+ // read selected keyboard rows
+ for (int i = 0; i < 8; i++)
+ {
+ if (m_key_select >> i & 1)
+ ret |= m_key_matrix[i]->read();
+ }
+
+ return ret;
+}
+
+WRITE8_MEMBER(ti74_state::keyboard_w)
+{
+ // d(0-7): select keyboard column
+ m_key_select = data;
+}
+
+WRITE8_MEMBER(ti74_state::bankswitch_w)
+{
+ // d0-d1: system rom bankswitch
+ membank("sysbank")->set_entry(data & 3);
+
+ // d2: power-on latch
+ if (~data & 4 && m_power)
+ {
+ m_power = 0;
+ m_maincpu->set_input_line(INPUT_LINE_RESET, ASSERT_LINE); // stop running
+ }
+
+ // d3: N/C
+}
+
+static ADDRESS_MAP_START( main_map, AS_PROGRAM, 8, ti74_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x1000, 0x1001) AM_DEVREADWRITE("hd44780", hd44780_device, read, write)
+ AM_RANGE(0x2000, 0x3fff) AM_RAM AM_SHARE("sysram.ic3")
+ //AM_RANGE(0x4000, 0xbfff) // mapped by the cartslot
+ AM_RANGE(0xc000, 0xdfff) AM_ROMBANK("sysbank")
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( main_io_map, AS_IO, 8, ti74_state )
+ AM_RANGE(TMS7000_PORTA, TMS7000_PORTA) AM_READ(keyboard_r)
+ AM_RANGE(TMS7000_PORTB, TMS7000_PORTB) AM_WRITE(bankswitch_w)
+ AM_RANGE(TMS7000_PORTE, TMS7000_PORTE) AM_WRITE(keyboard_w) AM_READNOP
+ADDRESS_MAP_END
+
+
+
+/***************************************************************************
+
+ Inputs
+
+***************************************************************************/
+
+INPUT_CHANGED_MEMBER(ti74_state::battery_status_changed)
+{
+ if (machine().phase() == MACHINE_PHASE_RUNNING)
+ update_battery_status(newval);
+}
+
+static INPUT_PORTS_START( ti74 )
+ PORT_START("BATTERY")
+ PORT_CONFNAME( 0x01, 0x01, "Battery Status" ) PORT_CHANGED_MEMBER(DEVICE_SELF, ti74_state, battery_status_changed, 0)
+ PORT_CONFSETTING( 0x00, "Low" )
+ PORT_CONFSETTING( 0x01, DEF_STR( Normal ) )
+
+ // 8x8 keyboard matrix, RESET and ON buttons are not on it. Unused entries are not connected, but some have a purpose for factory testing.
+ // For convenience, number keys are mapped to number row too.
+ // PORT_NAME lists functions under [SHIFT] and [MODE] or [STAT] as secondaries.
+ PORT_START("IN.0")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') PORT_NAME("m M Frac")
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') PORT_NAME("k K Frq")
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') PORT_NAME("i I " UTF8_SQUAREROOT"x")
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) PORT_NAME(UTF8_LEFT" " UTF8_LEFT)
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED )
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') PORT_NAME("u U x" UTF8_POW_2)
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') PORT_NAME("j J nCr")
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') PORT_NAME("n N Intg")
+
+ PORT_START("IN.1")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('%')
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') PORT_NAME("l L (x,y)")
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') PORT_NAME("o O 1/x")
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) PORT_NAME(UTF8_RIGHT" EE")
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED )
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') PORT_NAME("y Y log")
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') PORT_NAME("h H nPr")
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') PORT_NAME("b B EXC")
+
+ PORT_START("IN.2")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') PORT_CHAR('\'') PORT_NAME("SPACE ' " UTF8_CAPITAL_DELTA"%")
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':') PORT_NAME("; : " UTF8_CAPITAL_SIGMA"+")
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') PORT_NAME("p P y" UTF8_POW_X)
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP)) PORT_CHAR('(') PORT_NAME(UTF8_UP" (")
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED )
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') PORT_NAME("t T ln(x)")
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') PORT_NAME("g G n!")
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') PORT_NAME("v V SUM")
+
+ PORT_START("IN.3")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ENTER) PORT_CODE(KEYCODE_ENTER_PAD) PORT_CHAR(13) PORT_CHAR('=') PORT_NAME("ENTER =")
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_UNUSED )
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_DEL) PORT_CHAR(UCHAR_MAMEKEY(END)) PORT_NAME("CLR UCL CE/C")
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) PORT_CHAR(')') PORT_NAME(UTF8_DOWN" )")
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_HOME) PORT_CHAR(UCHAR_MAMEKEY(HOME)) PORT_NAME("RUN x<>y")
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') PORT_NAME("r R " UTF8_SMALL_PI)
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') PORT_NAME("f F P>R")
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') PORT_NAME("c C RCL")
+
+ PORT_START("IN.4")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('~') PORT_CHAR('?') PORT_NAME("+/- ? CSR")
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1_PAD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') PORT_NAME("1 ! r")
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4_PAD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') PORT_NAME("4 $ " UTF8_CAPITAL_SIGMA"x")
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7_PAD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR(UCHAR_MAMEKEY(DEL)) PORT_NAME("7 DEL " UTF8_CAPITAL_SIGMA"x" UTF8_POW_2)
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_END) PORT_CHAR(UCHAR_MAMEKEY(PAUSE)) PORT_NAME("BREAK")
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E') PORT_NAME("e E tan")
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') PORT_NAME("d D DRG>")
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') PORT_NAME("x X STO")
+
+ PORT_START("IN.5")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0_PAD) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR('<') PORT_NAME("0 < x" UTF8_PRIME)
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2_PAD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"') PORT_NAME("2 \" a")
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5_PAD) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('&') PORT_NAME("5 & " UTF8_CAPITAL_SIGMA"y")
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8_PAD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR(UCHAR_MAMEKEY(INSERT)) PORT_NAME("8 INS " UTF8_CAPITAL_SIGMA"y" UTF8_POW_2)
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_PGUP) PORT_CHAR(UCHAR_MAMEKEY(PGUP)) PORT_NAME("MODE")
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') PORT_NAME("w W cos")
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') PORT_NAME("s S DRG")
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') PORT_NAME("z Z PRINT")
+
+ PORT_START("IN.6")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CODE(KEYCODE_DEL_PAD) PORT_CHAR('.') PORT_CHAR('>') PORT_NAME(". > y" UTF8_PRIME) // 2 on the keyboard, same scancode
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3_PAD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') PORT_NAME("3 # b")
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6_PAD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('^') PORT_NAME("6 ^ n")
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9_PAD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_NAME("9 PB " UTF8_CAPITAL_SIGMA"xy")
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_PGDN) PORT_CHAR(UCHAR_MAMEKEY(PGDN)) PORT_NAME("OFF")
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') PORT_NAME("q Q sin")
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') PORT_NAME("a A DMS>DD")
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+ PORT_START("IN.7")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_PLUS_PAD) PORT_CHAR(UCHAR_MAMEKEY(PLUS_PAD)) PORT_NAME("+ s(y)")
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS_PAD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_NAME("- s(x)")
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ASTERISK) PORT_CHAR(UCHAR_MAMEKEY(ASTERISK)) PORT_NAME("* y" UTF8_NONSPACE_MACRON)
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH_PAD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR(UCHAR_MAMEKEY(SLASH_PAD)) PORT_NAME("/ x" UTF8_NONSPACE_MACRON)
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED )
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LALT) PORT_CODE(KEYCODE_RALT) PORT_CHAR(UCHAR_MAMEKEY(F1)) PORT_NAME("FN hyp")
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_SHIFT_2) PORT_NAME("CTL STAT")
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) PORT_NAME("SHIFT INV")
+INPUT_PORTS_END
+
+static INPUT_PORTS_START( ti95 )
+ PORT_START("BATTERY")
+ PORT_CONFNAME( 0x01, 0x01, "Battery Status" ) PORT_CHANGED_MEMBER(DEVICE_SELF, ti74_state, battery_status_changed, 0)
+ PORT_CONFSETTING( 0x00, "Low" )
+ PORT_CONFSETTING( 0x01, DEF_STR( Normal ) )
+
+ // 8x8 keyboard matrix, RESET and ON buttons are not on it.
+ // For convenience, number keys are mapped to number row too.
+ // PORT_NAME lists functions under [ALPHA] and [2nd] as secondaries.
+ PORT_START("IN.0")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_PGDN) PORT_NAME("OFF")
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_NAME("BREAK Q")
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_NAME("SIN A")
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_NAME("I/O Z")
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_PGUP) PORT_NAME("HELP ASM")
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(')') PORT_NAME(") ] DRG")
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH_PAD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR(UCHAR_MAMEKEY(SLASH_PAD)) PORT_NAME(UTF8_DIVIDE" \\ DFN")
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ENTER) PORT_CODE(KEYCODE_ENTER_PAD) PORT_CHAR('=') PORT_NAME("= ~ TRACE")
+
+ PORT_START("IN.1")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_NAME("EE { ENG")
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_NAME("HALT W")
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_NAME("COS S")
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_NAME("FILES X")
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LALT) PORT_CODE(KEYCODE_RALT) PORT_NAME("ALPHA PART")
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3_PAD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_NAME("3 ; SBL")
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_PLUS_PAD) PORT_CHAR(UCHAR_MAMEKEY(PLUS_PAD)) PORT_NAME("+ & RTN")
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2_PAD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_NAME("2 : GTL")
+
+ PORT_START("IN.2")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F1) PORT_NAME("F1")
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_NAME(UTF8_CAPITAL_SIGMA"+ E")
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_NAME("TAN D")
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_NAME("STAT C")
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_NAME("LEARN PC")
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6_PAD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_NAME("6 @ CP")
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS_PAD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_NAME("- _ 13d")
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5_PAD) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_NAME("5 % CMS")
+
+ PORT_START("IN.3")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F2) PORT_NAME("F2")
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_NAME("x~t R AH")
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_NAME("LN F")
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_NAME("CONV V")
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_HOME) PORT_NAME("OLD NOP")
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9_PAD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_NAME("9 > x!")
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ASTERISK) PORT_CHAR(UCHAR_MAMEKEY(ASTERISK)) PORT_NAME(UTF8_MULTIPLY" ^ " UTF8_SMALL_PI)
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8_PAD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_NAME("8 < nCr")
+
+ PORT_START("IN.4")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F3) PORT_NAME("F3")
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_NAME("HYP T BH")
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_NAME("LOG G")
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_NAME("NUM B")
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SPACE) PORT_NAME("RUN SPACE")
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0_PAD) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_NAME("0 $ PAUSE")
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_DEL_PAD) PORT_CHAR('.') PORT_NAME(". ? ADV")
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_NAME("+/- ! PRINT")
+
+ PORT_START("IN.5")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F4) PORT_NAME("F4")
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_NAME("INCR Y CH")
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_NAME("x" UTF8_POW_2" H")
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_NAME("FLAGS N")
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LEFT) PORT_NAME(UTF8_LEFT" DEL")
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_NAME("RCL O FH")
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_NAME("INV P")
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7_PAD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_NAME("7 } nPr")
+
+ PORT_START("IN.6")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F5) PORT_NAME("F5")
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_NAME("EXC U DH")
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_NAME(UTF8_SQUAREROOT"x J")
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_NAME("TESTS M")
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_RIGHT) PORT_NAME(UTF8_RIGHT" INS")
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_NAME("y" UTF8_POW_X" L")
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_NAME("2nd")
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4_PAD) PORT_CODE(KEYCODE_4) PORT_CHAR('4' )PORT_NAME("4 IND")
+
+ PORT_START("IN.7")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('(') PORT_NAME("( [ FIX")
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_NAME("STO I EH")
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_NAME("1/x K")
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_NAME("FUNC , \"")
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_END) PORT_NAME("CE F:CLR")
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_NAME("LIST . '")
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_DEL) PORT_NAME("CLEAR")
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1_PAD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_NAME("1 # LBL")
+INPUT_PORTS_END
+
+
+
+/***************************************************************************
+
+ Machine Config
+
+***************************************************************************/
+
+void ti74_state::update_battery_status(int state)
+{
+ // battery ok/low status is on int1 line!
+ m_maincpu->set_input_line(TMS7000_INT1_LINE, state ? ASSERT_LINE : CLEAR_LINE);
+}
+
+void ti74_state::machine_reset()
+{
+ m_power = 1;
+
+ update_battery_status(m_battery_inp->read());
+}
+
+void ti74_state::machine_start()
+{
+ if (m_cart->exists())
+ m_maincpu->space(AS_PROGRAM).install_read_handler(0x4000, 0xbfff, read8_delegate(FUNC(generic_slot_device::read_rom),(generic_slot_device*)m_cart));
+
+ membank("sysbank")->configure_entries(0, 4, memregion("system")->base(), 0x2000);
+ membank("sysbank")->set_entry(0);
+
+ // zerofill
+ m_key_select = 0;
+ m_power = 0;
+
+ // register for savestates
+ save_item(NAME(m_key_select));
+ save_item(NAME(m_power));
+}
+
+static MACHINE_CONFIG_START( ti74, ti74_state )
+
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", TMS70C46, XTAL_4MHz)
+ MCFG_CPU_PROGRAM_MAP(main_map)
+ MCFG_CPU_IO_MAP(main_io_map)
+
+ MCFG_NVRAM_ADD_0FILL("sysram.ic3")
+
+ /* video hardware */
+ MCFG_SCREEN_ADD("screen", LCD)
+ MCFG_SCREEN_REFRESH_RATE(60) // arbitrary
+ MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500))
+ MCFG_SCREEN_SIZE(6*31+1, 9*1+1+1)
+ MCFG_SCREEN_VISIBLE_AREA(0, 6*31, 0, 9*1+1)
+ MCFG_DEFAULT_LAYOUT(layout_ti74)
+ MCFG_SCREEN_UPDATE_DEVICE("hd44780", hd44780_device, screen_update)
+ MCFG_SCREEN_PALETTE("palette")
+
+ MCFG_PALETTE_ADD("palette", 3)
+ MCFG_PALETTE_INIT_OWNER(ti74_state, ti74)
+
+ MCFG_HD44780_ADD("hd44780") // 270kHz
+ MCFG_HD44780_LCD_SIZE(2, 16) // 2*16 internal
+ MCFG_HD44780_PIXEL_UPDATE_CB(ti74_pixel_update)
+
+ /* cartridge */
+ MCFG_GENERIC_CARTSLOT_ADD("cartslot", generic_plain_slot, "ti74_cart")
+ MCFG_GENERIC_EXTENSIONS("bin,rom,256")
+ MCFG_GENERIC_LOAD(ti74_state, ti74_cartridge)
+
+ MCFG_SOFTWARE_LIST_ADD("cart_list", "ti74_cart")
+MACHINE_CONFIG_END
+
+static MACHINE_CONFIG_START( ti95, ti74_state )
+
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", TMS70C46, XTAL_4MHz)
+ MCFG_CPU_PROGRAM_MAP(main_map)
+ MCFG_CPU_IO_MAP(main_io_map)
+
+ MCFG_NVRAM_ADD_0FILL("sysram.ic3")
+
+ /* video hardware */
+ MCFG_SCREEN_ADD("screen", LCD)
+ MCFG_SCREEN_REFRESH_RATE(60) // arbitrary
+ MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500))
+ MCFG_SCREEN_SIZE(200, 20)
+ MCFG_SCREEN_VISIBLE_AREA(0, 200-1, 0, 20-1)
+ MCFG_DEFAULT_LAYOUT(layout_ti95)
+ MCFG_SCREEN_UPDATE_DEVICE("hd44780", hd44780_device, screen_update)
+ MCFG_SCREEN_PALETTE("palette")
+
+ MCFG_PALETTE_ADD("palette", 3)
+ MCFG_PALETTE_INIT_OWNER(ti74_state, ti74)
+
+ MCFG_HD44780_ADD("hd44780")
+ MCFG_HD44780_LCD_SIZE(2, 16)
+ MCFG_HD44780_PIXEL_UPDATE_CB(ti95_pixel_update)
+
+ /* cartridge */
+ MCFG_GENERIC_CARTSLOT_ADD("cartslot", generic_plain_slot, "ti95_cart")
+ MCFG_GENERIC_EXTENSIONS("bin,rom,256")
+ MCFG_GENERIC_LOAD(ti74_state, ti74_cartridge)
+
+ //MCFG_SOFTWARE_LIST_ADD("cart_list", "ti95_cart")
+MACHINE_CONFIG_END
+
+
+
+/***************************************************************************
+
+ ROM Definitions
+
+***************************************************************************/
+
+ROM_START( ti74 )
+ ROM_REGION( 0x10000, "maincpu", 0 )
+ ROM_LOAD( "c70009.ic2", 0xf000, 0x1000, CRC(55a2f7c0) SHA1(530e3de42f2e304c8f4805ad389f38a459ec4e33) ) // internal cpu rom
+
+ ROM_REGION( 0x8000, "system", 0 )
+ ROM_LOAD( "hn61256pc93.ic1", 0x0000, 0x8000, CRC(019aaa2f) SHA1(04a1e694a49d50602e45a7834846de4d9f7d587d) ) // system rom, banked
+ROM_END
+
+
+ROM_START( ti95 )
+ ROM_REGION( 0x10000, "maincpu", 0 )
+ ROM_LOAD( "c70011.ic2", 0xf000, 0x1000, CRC(b4d0a5c1) SHA1(3ff41946d014f72220a88803023b6a06d5086ce4) ) // internal cpu rom
+
+ ROM_REGION( 0x8000, "system", 0 )
+ ROM_LOAD( "hn61256pc95.ic1", 0x0000, 0x8000, CRC(c46d29ae) SHA1(c653f08590dbc28241a9f5a6c2541641bdb0208b) ) // system rom, banked
+ROM_END
+
+
+COMP( 1985, ti74, 0, 0, ti74, ti74, driver_device, 0, "Texas Instruments", "TI-74 BASICALC", MACHINE_SUPPORTS_SAVE | MACHINE_NO_SOUND_HW )
+COMP( 1986, ti95, 0, 0, ti95, ti95, driver_device, 0, "Texas Instruments", "TI-95 PROCALC", MACHINE_SUPPORTS_SAVE | MACHINE_NO_SOUND_HW )