diff options
Diffstat (limited to 'src/mame/drivers/ti99_4x.cpp')
-rw-r--r-- | src/mame/drivers/ti99_4x.cpp | 1248 |
1 files changed, 0 insertions, 1248 deletions
diff --git a/src/mame/drivers/ti99_4x.cpp b/src/mame/drivers/ti99_4x.cpp deleted file mode 100644 index 4b1c17dc4ea..00000000000 --- a/src/mame/drivers/ti99_4x.cpp +++ /dev/null @@ -1,1248 +0,0 @@ -// license:LGPL-2.1+ -// copyright-holders:Michael Zapf -/**************************************************************************** - - MESS Driver for TI-99/4 and TI-99/4A Home Computers. - TI99/4 info: - - Similar to TI99/4a, except for the following: - * tms9918/9928 has no bitmap mode - * smaller, 40-key keyboard - * many small differences in the contents of system ROMs - - Historical notes: TI made several last minute design changes. - * TI99/4 prototypes had an extra port for an I/R joystick and keypad interface. - * early TI99/4 prototypes were designed for a tms9985, not a tms9900. - - Emulation architecture: - (also see datamux.c, peribox.c) - - +---- video (upper 8 bits of databus) - | - CPU | - TMS9900 ==##== datamux --------+------ peribox ----------- [8] slots with peripheral devices - | || (16->8) | - | || +------ Console GROMs (0, 1, 2) - | ##=== Console ROM | - TMS9901 || +------ gromport (cartridge port) - (I/O) ##=== 256 byte RAM | - | || +------ sound - | ##=== 32KiB RAM - +---+--+ unofficial mod - | | (16 bit) - Cass joyport - - Raphael Nabet, 1999-2003. - Rewritten by Michael Zapf - February 2012: Rewritten as class - -*****************************************************************************/ - -#include "emu.h" -#include "cpu/tms9900/tms9900.h" - -#include "machine/tms9901.h" -#include "imagedev/cassette.h" - -#include "bus/ti99/ti99defs.h" -#include "bus/ti99/internal/datamux.h" -#include "bus/ti99/gromport/gromport.h" -#include "bus/ti99/internal/evpcconn.h" - -#include "bus/ti99/joyport/joyport.h" -#include "bus/ti99/internal/ioport.h" -#include "machine/ram.h" - -#include "softlist.h" -#include "speaker.h" - -// Debugging -#define LOG_WARN (1U<<1) // Warnings -#define LOG_CONFIG (1U<<2) // Configuration -#define LOG_READY (1U<<3) -#define LOG_INTERRUPTS (1U<<4) -#define LOG_CRU (1U<<5) -#define LOG_CRUREAD (1U<<6) -#define LOG_RESETLOAD (1U<<7) - -#define VERBOSE ( LOG_GENERAL | LOG_CONFIG | LOG_WARN | LOG_RESETLOAD ) - -#include "logmacro.h" - -/* - The console. -*/ -class ti99_4x_state : public driver_device -{ -public: - ti99_4x_state(const machine_config &mconfig, device_type type, const char *tag) - : driver_device(mconfig, type, tag), - m_keyboard_column(0), - m_check_alphalock(false), - m_nready_combined(0), - m_nready_prev(0), - m_model(0), - m_int1(0), - m_int2(0), - m_int12(0), - m_cpu(*this, "maincpu"), - m_tms9901(*this, TI_TMS9901_TAG), - m_gromport(*this, TI99_GROMPORT_TAG), - m_ioport(*this, TI99_IOPORT_TAG), - m_joyport(*this, TI_JOYPORT_TAG), - m_datamux(*this, TI99_DATAMUX_TAG), - m_video(*this, TI_VDP_TAG), - m_cassette1(*this, "cassette1"), - m_cassette2(*this, "cassette2"), - m_keyboard(*this, "COL%u", 0U), - m_alpha(*this, "ALPHA"), - m_alpha1(*this, "ALPHA1"), - m_alphabug(*this, "ALPHABUG") - { } - - // Configurations - void ti99_4_common(machine_config &config); - void ti99_4(machine_config &config); - void ti99_4_50hz(machine_config &config); - void ti99_4ev_60hz(machine_config &config); - void ti99_4qi(machine_config &config); - void ti99_4qi_60hz(machine_config &config); - void ti99_4a_50hz(machine_config &config); - void ti99_4a_60hz(machine_config &config); - void ti99_4a(machine_config &config); - void ti99_4_60hz(machine_config &config); - - // Lifecycle - void driver_start() override; - void driver_reset() override; - - // Interrupt triggers - DECLARE_INPUT_CHANGED_MEMBER( load_interrupt ); - -private: - // Processor connections with the main board - uint8_t cruread(offs_t offset); - uint8_t interrupt_level(); - void cruwrite(offs_t offset, uint8_t data); - void external_operation(offs_t offset, uint8_t data); - DECLARE_WRITE_LINE_MEMBER( clock_out ); - - // Connections from outside towards the CPU (callbacks) - DECLARE_WRITE_LINE_MEMBER( console_ready_dmux ); - DECLARE_WRITE_LINE_MEMBER( console_ready_sound ); - DECLARE_WRITE_LINE_MEMBER( console_ready_pbox ); - DECLARE_WRITE_LINE_MEMBER( console_ready_cart ); - DECLARE_WRITE_LINE_MEMBER( console_ready_grom ); - DECLARE_WRITE_LINE_MEMBER( console_reset ); - DECLARE_WRITE_LINE_MEMBER( notconnected ); - - // GROM clock - DECLARE_WRITE_LINE_MEMBER( gromclk_in ); - - // Connections with the system interface chip 9901 - DECLARE_WRITE_LINE_MEMBER( extint ); - DECLARE_WRITE_LINE_MEMBER( video_interrupt_in ); - DECLARE_WRITE_LINE_MEMBER( handset_interrupt_in ); - - // Connections with the system interface TMS9901 - DECLARE_READ8_MEMBER(psi_input_4); - DECLARE_READ8_MEMBER(psi_input_4a); - DECLARE_WRITE_LINE_MEMBER(keyC0); - DECLARE_WRITE_LINE_MEMBER(keyC1); - DECLARE_WRITE_LINE_MEMBER(keyC2); - DECLARE_WRITE_LINE_MEMBER(cs1_motor); - DECLARE_WRITE_LINE_MEMBER(audio_gate); - DECLARE_WRITE_LINE_MEMBER(cassette_output); - DECLARE_WRITE_LINE_MEMBER(tms9901_interrupt); - DECLARE_WRITE_LINE_MEMBER(handset_ack); - DECLARE_WRITE_LINE_MEMBER(cs2_motor); - DECLARE_WRITE_LINE_MEMBER(alphaW); - - // Used by EVPC - DECLARE_WRITE_LINE_MEMBER( video_interrupt_evpc_in ); - void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override; - - void crumap(address_map &map); - void memmap(address_map &map); - void memmap_setaddress(address_map &map); - - void set_keyboard_column(int number, int data); - int m_keyboard_column; - int m_check_alphalock; - - // READY handling - int m_nready_combined; - int m_nready_prev; - void console_ready_join(int id, int state); - - // Console type - int m_model; - - // Latch for 9901 INT1, INT2, and INT12 lines - int m_int1; - int m_int2; - int m_int12; - - // Connected devices - required_device<tms9900_device> m_cpu; - required_device<tms9901_device> m_tms9901; - required_device<bus::ti99::gromport::gromport_device> m_gromport; - required_device<bus::ti99::internal::ioport_device> m_ioport; - required_device<bus::ti99::joyport::joyport_device> m_joyport; - required_device<bus::ti99::internal::datamux_device> m_datamux; - optional_device<tms9928a_device> m_video; - required_device<cassette_image_device> m_cassette1; - required_device<cassette_image_device> m_cassette2; - - optional_ioport_array<6> m_keyboard; - optional_ioport m_alpha; - optional_ioport m_alpha1; - optional_ioport m_alphabug; - - // Timer for EVPC (provided by the TMS9929A, but EVPC replaces that VDP) - emu_timer *m_gromclk_timer; -}; - -/* - Console models. -*/ -enum -{ - MODEL_4, - MODEL_4A, - MODEL_4EV, - MODEL_4QI -}; - -/* - READY bits. -*/ -enum -{ - READY_GROM = 1, - READY_DMUX = 2, - READY_PBOX = 4, - READY_SOUND = 8, - READY_CART = 16 -}; - -/* - Memory map. All of the work is done in the datamux (see datamux.c). -*/ -void ti99_4x_state::memmap(address_map &map) -{ - map.global_mask(0xffff); - map(0x0000, 0xffff).rw(TI99_DATAMUX_TAG, FUNC(bus::ti99::internal::datamux_device::read), FUNC(bus::ti99::internal::datamux_device::write)); -} - -void ti99_4x_state::memmap_setaddress(address_map &map) -{ - map.global_mask(0xffff); - map(0x0000, 0xffff).w(TI99_DATAMUX_TAG, FUNC(bus::ti99::internal::datamux_device::setaddress)); -} - -/* - CRU map - TMS9900 CRU address space is 12 bits wide, attached to A3-A14, A0-A2 must - be 000 (other values for external commands like RSET, LREX, CKON...), - A15 is used as CRUOUT - The TMS9901 is incompletely decoded - ---0 00xx xxcc ccc0 - causing 16 mirrors (0000, 0040, 0080, 00c0, ... , 03c0) -*/ -void ti99_4x_state::crumap(address_map &map) -{ - map(0x0000, 0x1fff).rw(FUNC(ti99_4x_state::cruread), FUNC(ti99_4x_state::cruwrite)); - map(0x0000, 0x003f).mirror(0x03c0).rw(m_tms9901, FUNC(tms9901_device::read), FUNC(tms9901_device::write)); -} - - -/***************************************************************************** - Input ports - ****************************************************************************/ - -static INPUT_PORTS_START(ti99_4) - PORT_START("COL0") // col 0 - PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1 !") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Q QUIT") PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_CHAR(UCHAR_MAMEKEY(F12)) - /* TI99/4 has a second space key which maps the same */ - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SPACE") PORT_CODE(KEYCODE_SPACE) PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(' ') - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1) - PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0 )") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')') - PORT_BIT(0x04, 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("L =") PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR('=') - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ENTER") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) - - PORT_START("COL1") // col 1 - PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2 @") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@') - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("W BEGIN") PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_CHAR(UCHAR_MAMEKEY(F5)) - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A AID") PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_CHAR(UCHAR_MAMEKEY(F7)) - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Z BACK") PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR(UCHAR_MAMEKEY(F9)) - PORT_BIT(0x08, 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("O +") PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR('+') - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("K /") PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR('/') - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(", .") PORT_CODE(KEYCODE_STOP) PORT_CHAR(',') PORT_CHAR('.') - - PORT_START("COL2") // col 2 - PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3 #") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E UP") PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_CHAR(UCHAR_MAMEKEY(UP)) - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("S LEFT") PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_CHAR(UCHAR_MAMEKEY(LEFT)) - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("X DOWN") PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR(UCHAR_MAMEKEY(DOWN)) - PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8 *") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('*') - PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("I -") PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('-') - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("J ^") PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('^') - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("M ;") PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR(';') - /* col 3 */ - PORT_START("COL3") // col 3 - PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4 $") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("R REDO") PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_CHAR(UCHAR_MAMEKEY(F8)) - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D RIGHT") PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C CLEAR") PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR(UCHAR_MAMEKEY(F4)) - PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7 &") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&') - PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("U _") PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_CHAR('_') - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("H <") PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_CHAR('<') - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("N :") PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR(':') - - PORT_START("COL4") // col 4 - PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5 %") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("T ERASE") PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_CHAR(UCHAR_MAMEKEY(F3)) - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F DEL") PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_CHAR(UCHAR_MAMEKEY(DEL)) - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("V PROC'D") PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR(UCHAR_MAMEKEY(F6)) - PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6 ^") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('\'') - PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Y >") PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_CHAR('>') - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("G INS") PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_CHAR(UCHAR_MAMEKEY(F2)) - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B ?") PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHAR('?') - -INPUT_PORTS_END - -/* TI99/4a: 48-key keyboard */ -static INPUT_PORTS_START(ti99_4a) - PORT_START( "ALPHABUG" ) - PORT_CONFNAME( 0x01, 0x01, "Alpha Lock blocks joystick up" ) - PORT_CONFSETTING( 0x00, DEF_STR( Off ) ) - PORT_CONFSETTING( 0x01, DEF_STR( On ) ) - - PORT_START( "LOADINT") - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Load interrupt") PORT_CODE(KEYCODE_PRTSCR) PORT_CHANGED_MEMBER(DEVICE_SELF, ti99_4x_state, load_interrupt, 1) - - PORT_START("COL0") // col 0 - PORT_BIT(0x88, IP_ACTIVE_LOW, IPT_UNUSED) - /* The original control key is located on the left, but we accept the right control key as well */ - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) - /* TI99/4a has a second shift key which maps the same */ - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) - /* The original function key is located on the right, but we accept the left alt key as well */ - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("FCTN") PORT_CODE(KEYCODE_RALT) PORT_CODE(KEYCODE_LALT) PORT_CHAR(UCHAR_SHIFT_2) - PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("= + QUIT") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+') PORT_CHAR(UCHAR_MAMEKEY(F12)) - - PORT_START("COL1") // col 1 - PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') PORT_CHAR(UCHAR_MAMEKEY(DOWN)) - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') PORT_CHAR('~') - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') PORT_CHAR(UCHAR_MAMEKEY(LEFT)) - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@') PORT_CHAR(UCHAR_MAMEKEY(F2)) - PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9 ( BACK") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR('(') PORT_CHAR(UCHAR_MAMEKEY(F9)) - PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') PORT_CHAR('\'') - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>') - - PORT_START("COL2") // col 2 - PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') PORT_CHAR('`') - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E') PORT_CHAR(UCHAR_MAMEKEY(UP)) - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3 # ERASE") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') PORT_CHAR(UCHAR_MAMEKEY(F3)) - PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8 * REDO") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('*') PORT_CHAR(UCHAR_MAMEKEY(F8)) - PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') PORT_CHAR('?') - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<') - - PORT_START("COL3") // col 3 - PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') PORT_CHAR('[') - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') PORT_CHAR('{') - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4 $ CLEAR") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') PORT_CHAR(UCHAR_MAMEKEY(F4)) - PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7 & AID") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&') PORT_CHAR(UCHAR_MAMEKEY(F7)) - PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') PORT_CHAR('_') - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') - - PORT_START("COL4") // col 4 - PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') PORT_CHAR(']') - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') PORT_CHAR('}') - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5 % BEGIN") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') PORT_CHAR(UCHAR_MAMEKEY(F5)) - PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6 ^ PROC'D") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('^') PORT_CHAR(UCHAR_MAMEKEY(F6)) - PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') - - PORT_START("COL5") // col 5 - PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') PORT_CHAR('\\') - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') PORT_CHAR('|') - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') PORT_CHAR(UCHAR_MAMEKEY(DEL)) - PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')') PORT_CHAR(UCHAR_MAMEKEY(F10)) - PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') PORT_CHAR('\"') - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':') - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('-') - - PORT_START("ALPHA") /* one more port for Alpha line */ - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Alpha Lock") PORT_CODE(KEYCODE_CAPSLOCK) PORT_TOGGLE - - /* another version of Alpha Lock which is non-toggling; this is useful when we want to attach - a real TI keyboard for input. For home computers, the Alpha Lock / Shift Lock was a physically - locking key. */ - PORT_START("ALPHA1") - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Alpha Lock non-toggle") PORT_CODE(KEYCODE_RWIN) - -INPUT_PORTS_END - - -/***************************************************************************** - Components -******************************************************************************/ - -uint8_t ti99_4x_state::cruread(offs_t offset) -{ - LOGMASKED(LOG_CRUREAD, "read access to CRU address %04x\n", offset << 1); - uint8_t value = 0; - - // Let the gromport (not in the QI version) and the p-box behind the I/O port - // decide whether they want to change the value at the CRU address - - if (m_model != MODEL_4QI) m_gromport->crureadz(offset<<1, &value); - m_ioport->crureadz(offset<<1, &value); - - return value; -} - -void ti99_4x_state::cruwrite(offs_t offset, uint8_t data) -{ - LOGMASKED(LOG_CRU, "Write access to CRU address %04x\n", offset << 1); - // The QI version does not propagate the CRU signals to the cartridge slot - if (m_model != MODEL_4QI) m_gromport->cruwrite(offset<<1, data); - m_ioport->cruwrite(offset<<1, data); -} - -void ti99_4x_state::external_operation(offs_t offset, uint8_t data) -{ - static char const *const extop[8] = { "inv1", "inv2", "IDLE", "RSET", "inv3", "CKON", "CKOF", "LREX" }; - // Some games (e.g. Slymoids) actually use IDLE for synchronization - if (offset == IDLE_OP) return; - else - LOGMASKED(LOG_WARN, "External operation %s not implemented on TI-99 board\n", extop[offset]); -} - -/*************************************************************************** - TI99/4x-specific tms9901 I/O handlers - - Bit Meaning - 0 - (control) - - 1 /INT1 (input) EXTINT - 2 /INT2 (input) VDP - 3 /INT3 (input) Keyboard = line / Joystick button - 4 /INT4 (input) Keyboard Space line / Joystick left - 5 /INT5 (input) Keyboard Enter line / Joystick right - 6 /INT6 (input) Keyboard 0 line / Joystick down - 7 31 /INT7 P15 (input) Keyboard Fctn line / Joystick up / AlphaLock - - 8 30 /INT8 P14 (input) Keyboard Shift line - 9 29 /INT9 P13 (input) Keyboard Ctrl line - 10 28 /INT10 P12 (input) Keyboard Z line - 11 27 /INT11 P11 (input) Cassette audio - 12 26 /INT12 P10 (input) 99/4: Handset, 99/4A: 1 - 13 25 /INT13 P9 (output) Cassette audio (1?) - 14 24 /INT14 P8 (output) Audio Gate (1?) - 15 23 /INT15 P7 (output) Motor CS2 (1?) - - 16 P0 (output) 99/4: Handset ack (1?) - 17 P1 (input) 99/4: Handset (1?) - 18 P2 (output) Key col 0 (1?) - 19 P3 (output) Key col 1 (1?) - 20 P4 (output) Key col 2 (1?) - 21 P5 (output) AlphaLock select (1) - 22 P6 (output) Motor CS1 (1?) - - enum { INT1, ... INT7_P15, INT8_P14, ..., P5, P6 } - - The hardware bug of the TI-99/4A keyboard: You have to release the - AlphaLock key when using joysticks. - The AlphaLock key was obviously added to the 99/4 matrix in a quite adhoc - way; a separate 9901 line (P5) is used to deliver the 0 level to be routed - through the switch. When AlphaLock is depressed, it connects the /INT7 - line via two 470 ohm resistors to P5. When the AlphaLock key is not - scanned, P5 is 1, pulling up the /INT7 line. Moving the joystick lever up - should pull it down, but due to the additional resistance in the long - cable in the joystick, the sum resistance becomes too high to safely - pull down the level, and the 9901 does not sense a 0 on its /INT7 input. - - Alpha - P5 -----[470]-----/ + - | Joy up - /INT7--+--[470]-----+----[xxx]-----/ ---[280]--- 0 (if column=110 or 111) - | - +---[10k]--- 1 - pull-up - - The typical fix was to insert a diode at the Alphalock key. -***************************************************************************/ - -READ8_MEMBER( ti99_4x_state::psi_input_4) -{ - switch (offset) - { - case tms9901_device::INT1: - return (m_int1==CLEAR_LINE)? 1 : 0; - case tms9901_device::INT2: - return (m_int2==CLEAR_LINE)? 1 : 0; - case tms9901_device::INT3: - case tms9901_device::INT4: - case tms9901_device::INT5: - case tms9901_device::INT6: - case tms9901_device::INT7_P15: - // Keyboard ACTIVE_LOW, Joysticks ACTIVE_LOW - if (m_keyboard_column >= 5) - return BIT(m_joyport->read_port(), offset-tms9901_device::INT3); - else - return BIT(m_keyboard[m_keyboard_column]->read(), offset-tms9901_device::INT3); - case tms9901_device::INT8_P14: - case tms9901_device::INT9_P13: - case tms9901_device::INT10_P12: - if (m_keyboard_column >= 5) // no joystick lines after /INT7 - return 1; - else - return BIT(m_keyboard[m_keyboard_column]->read(), offset-tms9901_device::INT3); - case tms9901_device::INT11_P11: - return (m_cassette1->input() > 0); - case tms9901_device::INT12_P10: - return (m_int12==CLEAR_LINE)? 1 : 0; - case tms9901_device::P1: - return BIT(m_joyport->read_port(), 5); // 0x20 - default: - return 1; - } -} - -READ8_MEMBER( ti99_4x_state::psi_input_4a ) -{ - int alphabias=0; - - switch (offset) - { - case tms9901_device::INT1: - return (m_int1==CLEAR_LINE)? 1 : 0; - case tms9901_device::INT2: - return (m_int2==CLEAR_LINE)? 1 : 0; - case tms9901_device::INT3: - case tms9901_device::INT4: - case tms9901_device::INT5: - case tms9901_device::INT6: - // Keyboard ACTIVE_LOW (s.o.) - // Joysticks ACTIVE_LOW (handset.cpp) - if (m_keyboard_column >= 6) - return BIT(m_joyport->read_port(), offset-tms9901_device::INT3); - else - return BIT(m_keyboard[m_keyboard_column]->read(), offset-tms9901_device::INT3); - - case tms9901_device::INT7_P15: - if (m_keyboard_column >= 6) // Joysticks - { - // If the Alpha Lock bug is not fixed - if (m_alphabug->read()!=0) - alphabias = ~(m_alpha->read() & m_alpha1->read()); - - return BIT(m_joyport->read_port() | alphabias, offset-tms9901_device::INT3); - } - else - { - if (m_check_alphalock) - { - return BIT(m_alpha->read() & m_alpha1->read(), offset-tms9901_device::INT3); - } - else - return BIT(m_keyboard[m_keyboard_column]->read(), offset-tms9901_device::INT3); - } - - case tms9901_device::INT8_P14: - case tms9901_device::INT9_P13: - case tms9901_device::INT10_P12: - if (m_keyboard_column >= 6) // no joystick lines after /INT7 - return 1; - else - return BIT(m_keyboard[m_keyboard_column]->read(), offset-tms9901_device::INT3); - case tms9901_device::INT11_P11: - // CS2 is write-only - return (m_cassette1->input()>0); - default: - return 1; - } -} -/* switch (offset & 0x03) - { - case tms9901_device::CB_INT7: - // - // Read pins INT3*-INT7* of TI99's 9901. - // bit 1: INT1 status - // bit 2: INT2 status - // bit 3-7: keyboard status bits 0 to 4 - // - // |K|K|K|K|K|I2|I1|C| - // - if (m_keyboard_column >= (m_model==MODEL_4? 5:6)) // joy 1, 2, handset - { - answer = m_joyport->read_port(); - - if ((m_model!=MODEL_4) && (m_alphabug->read()!=0) ) answer |= (m_alpha->read() | m_alpha1->read()); - } - else - { - answer = m_keyboard[m_keyboard_column]->read(); - } - if (m_check_alphalock) // never true for TI-99/4 - { - answer &= ~(m_alpha->read() | m_alpha1->read()); - } - answer = (answer << 3); - if (m_int1 == CLEAR_LINE) answer |= 0x02; - if (m_int2 == CLEAR_LINE) answer |= 0x04; - - break; - - case tms9901_device::INT8_INT15: - // |1|1|1|INT12|0|K|K|K| - if (m_keyboard_column >= (m_model==MODEL_4? 5:6)) answer = 0x07; - else answer = ((m_keyboard[m_keyboard_column]->read())>>5) & 0x07; - answer |= 0xe0; - if (m_model != MODEL_4 || m_int12==CLEAR_LINE) answer |= 0x10; - break; - - case tms9901_device::P0_P7: - // Required for the handset (only on TI-99/4) - if ((m_joyport->read_port() & 0x20)!=0) answer |= 2; - break; - - case tms9901_device::P8_P15: - // Preset to 1 - answer = 4; - - // Interrupt pin of the handset (only on TI-99/4) - // Negative logic (interrupt pulls line down) - if ((m_joyport->read_port() & 0x40)==0) answer = 0; - - // we don't take CS2 into account, as CS2 is a write-only unit - if (m_cassette1->input() > 0) - { - answer |= 8; - } - break; - } - */ - - -/* - Handler for TMS9901 P0 pin (handset data acknowledge); only for 99/4 -*/ -WRITE_LINE_MEMBER( ti99_4x_state::handset_ack ) -{ - // Write a value to the joyport. If there is a handset this will set its - // ACK line. - m_joyport->write_port(state==ASSERT_LINE? 0x01 : 0x00); -} - -/* - WRITE key column select (P2-P4), TI-99/4 -*/ -void ti99_4x_state::set_keyboard_column(int number, int data) -{ - if (data != 0) - m_keyboard_column |= 1 << number; - else - m_keyboard_column &= ~ (1 << number); - - if (m_keyboard_column >= (m_model==MODEL_4? 5:6)) - { - m_joyport->write_port(m_keyboard_column - (m_model==MODEL_4? 5:6) + 1); - } - - // TI-99/4: joystick 1 = column 5 - // joystick 2 = column 6 - // (only for the prototype versions; the released versions had no IR - // handset and the board was already redesigned to use columns 6 and 7) - - // TI-99/4A: joystick 1 = column 6 - // joystick 2 = column 7 -} - -WRITE_LINE_MEMBER( ti99_4x_state::keyC0 ) -{ - set_keyboard_column(0, state); -} - -WRITE_LINE_MEMBER( ti99_4x_state::keyC1 ) -{ - set_keyboard_column(1, state); -} - -WRITE_LINE_MEMBER( ti99_4x_state::keyC2 ) -{ - set_keyboard_column(2, state); -} - -/* - Select alpha lock line - TI99/4a only (P5) -*/ -WRITE_LINE_MEMBER( ti99_4x_state::alphaW ) -{ - m_check_alphalock = (state==0); -} - -/* - Control CS1 tape unit motor (P6) -*/ -WRITE_LINE_MEMBER( ti99_4x_state::cs1_motor ) -{ - m_cassette1->change_state(state==ASSERT_LINE? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED,CASSETTE_MASK_MOTOR); -} - -/* - Control CS2 tape unit motor (P7) -*/ -WRITE_LINE_MEMBER( ti99_4x_state::cs2_motor ) -{ - m_cassette2->change_state(state==ASSERT_LINE? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED,CASSETTE_MASK_MOTOR); -} - -/* - Audio gate (P8) - Set to 1 before using tape: this enables the mixing of tape input sound - with computer sound. - We do not really need to emulate this as the tape recorder generates sound - on its own. - TODO: Emulate a pop sound when turning on/off the audio gate; there are - some few programs that generate a sound with this feature -*/ -WRITE_LINE_MEMBER( ti99_4x_state::audio_gate ) -{ -} - -/* - Tape output (P9) - I think polarity is correct, but don't take my word for it. -*/ -WRITE_LINE_MEMBER( ti99_4x_state::cassette_output ) -{ - m_cassette1->output(state==ASSERT_LINE? +1 : -1); - m_cassette2->output(state==ASSERT_LINE? +1 : -1); -} - -WRITE_LINE_MEMBER( ti99_4x_state::tms9901_interrupt ) -{ - m_cpu->set_input_line(INT_9900_INTREQ, state); -} - -uint8_t ti99_4x_state::interrupt_level() -{ - // The interrupt level must be fetched from the 9901; - // on the TI-99 systems these IC lines are not used; the input lines - // at the CPU are hardwired to level 1. - return 1; -} - -/* - Clock line from the CPU. Used to control wait state generation. -*/ -WRITE_LINE_MEMBER( ti99_4x_state::clock_out ) -{ - m_tms9901->phi_line(state); - m_datamux->clock_in(state); - m_ioport->clock_in(state); -} - -/* - GROMCLK from VDP, propagating to datamux -*/ -WRITE_LINE_MEMBER( ti99_4x_state::gromclk_in ) -{ - m_datamux->gromclk_in(state); -} - -/* - Used by the EVPC -*/ -void ti99_4x_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) -{ - // Pulse it - if (m_datamux != nullptr) - { - gromclk_in(ASSERT_LINE); - gromclk_in(CLEAR_LINE); - } -} - -/*****************************************************************************/ - -WRITE_LINE_MEMBER( ti99_4x_state::video_interrupt_evpc_in ) -{ - LOGMASKED(LOG_INTERRUPTS, "VDP INT2 from EVPC on tms9901, level=%d\n", state); - m_int2 = (line_state)state; - m_tms9901->set_int_line(2, state); -} - -/* - set the state of TMS9901's INT2 (called by the tms9928 core) -*/ -WRITE_LINE_MEMBER( ti99_4x_state::video_interrupt_in ) -{ - LOGMASKED(LOG_INTERRUPTS, "VDP %s /INT2 on TMS9901\n", (state==ASSERT_LINE)? "asserts" : "clears"); - m_int2 = (line_state)state; - m_tms9901->set_int_line(2, state); - // Pulse for the handset - if (m_model == MODEL_4) m_joyport->pulse_clock(); -} - -/* - set the state of TMS9901's INT12 (called by the handset prototype of TI-99/4) -*/ -WRITE_LINE_MEMBER( ti99_4x_state::handset_interrupt_in) -{ - LOGMASKED(LOG_INTERRUPTS, "joyport INT12 on tms9901, level=%d\n", state); - m_int12 = (line_state)state; - m_tms9901->set_int_line(12, state); -} - -/* - One of the common hardware mods was to add a switch to trigger a LOAD - interrupt -*/ -INPUT_CHANGED_MEMBER( ti99_4x_state::load_interrupt ) -{ - LOGMASKED(LOG_RESETLOAD, "LOAD interrupt, level=%d\n", newval); - m_cpu->set_input_line(INT_9900_LOAD, (newval==0)? ASSERT_LINE : CLEAR_LINE); -} - -/*********************************************************** - Links to external devices -***********************************************************/ - -/* - We combine the incoming READY signals and propagate them to the CPU. - An alternative would be to let the CPU get the READY state, but this would - be a much higher overhead, as this happens in each clock tick. -*/ -void ti99_4x_state::console_ready_join(int id, int state) -{ - if (state==CLEAR_LINE) - m_nready_combined |= id; - else - m_nready_combined &= ~id; - - if (m_nready_prev != m_nready_combined) - LOGMASKED(LOG_READY, "READY bits = %04x\n", ~m_nready_combined); - - m_nready_prev = m_nready_combined; - m_cpu->set_ready(m_nready_combined==0); -} - -/* - Connections to the READY line. This might look a bit ugly; we need an - implementation of a "Wired AND" device. -*/ -WRITE_LINE_MEMBER( ti99_4x_state::console_ready_grom ) -{ - LOGMASKED(LOG_READY, "GROM ready = %d\n", state); - console_ready_join(READY_GROM, state); -} - -WRITE_LINE_MEMBER( ti99_4x_state::console_ready_dmux ) -{ - console_ready_join(READY_DMUX, state); -} - -WRITE_LINE_MEMBER( ti99_4x_state::console_ready_pbox ) -{ - console_ready_join(READY_PBOX, state); -} - -WRITE_LINE_MEMBER( ti99_4x_state::console_ready_sound ) -{ - console_ready_join(READY_SOUND, state); -} - -WRITE_LINE_MEMBER( ti99_4x_state::console_ready_cart ) -{ - console_ready_join(READY_CART, state); -} - -/* - The RESET line leading to a reset of the CPU. This is asserted when a - cartridge is plugged in. -*/ -WRITE_LINE_MEMBER( ti99_4x_state::console_reset ) -{ - if (machine().phase() != machine_phase::INIT) - { - LOGMASKED(LOG_RESETLOAD, "Console reset line = %d\n", state); - m_cpu->set_input_line(INT_9900_RESET, state); - m_video->reset_line(state); - } -} - -WRITE_LINE_MEMBER( ti99_4x_state::extint ) -{ - LOGMASKED(LOG_INTERRUPTS, "EXTINT level = %02x\n", state); - m_int1 = (line_state)state; - m_tms9901->set_int_line(1, state); -} - -WRITE_LINE_MEMBER( ti99_4x_state::notconnected ) -{ - LOGMASKED(LOG_INTERRUPTS, "Setting a not connected line ... ignored\n"); -} - -/****************************************************************************** - Machine definitions -******************************************************************************/ - -void ti99_4x_state::driver_start() -{ - m_nready_combined = 0; - // Removing the TMS9928a requires to add a replacement for the GROMCLK. - // In the real hardware this is a circuit (REPL99x) that fits into the VDP socket - if (m_model == MODEL_4EV) - m_gromclk_timer = timer_alloc(0); - - save_item(NAME(m_keyboard_column)); - save_item(NAME(m_check_alphalock)); - save_item(NAME(m_nready_combined)); - save_item(NAME(m_nready_prev)); - save_item(NAME(m_model)); - save_item(NAME(m_int1)); - save_item(NAME(m_int2)); - save_item(NAME(m_int12)); -} - -void ti99_4x_state::driver_reset() -{ - m_cpu->set_ready(ASSERT_LINE); - m_cpu->set_hold(CLEAR_LINE); - m_int1 = CLEAR_LINE; - m_int2 = CLEAR_LINE; - m_int12 = CLEAR_LINE; - if (m_model == MODEL_4EV) - m_gromclk_timer->adjust(attotime::zero, 0, attotime::from_hz(XTAL(10'738'635)/24)); -} - -/********************************************************** - Common configuration -**********************************************************/ -void ti99_4x_state::ti99_4_common(machine_config& config) -{ - // CPU - TMS9900(config, m_cpu, 3000000); - m_cpu->set_addrmap(AS_PROGRAM, &ti99_4x_state::memmap); - m_cpu->set_addrmap(AS_IO, &ti99_4x_state::crumap); - m_cpu->set_addrmap(tms99xx_device::AS_SETADDRESS, &ti99_4x_state::memmap_setaddress); - m_cpu->extop_cb().set(FUNC(ti99_4x_state::external_operation)); - m_cpu->intlevel_cb().set(FUNC(ti99_4x_state::interrupt_level)); - m_cpu->clkout_cb().set(FUNC(ti99_4x_state::clock_out)); - - // Programmable system interface (driven by CLKOUT) - TMS9901(config, m_tms9901, 0); - m_tms9901->p_out_cb(2).set(FUNC(ti99_4x_state::keyC0)); - m_tms9901->p_out_cb(3).set(FUNC(ti99_4x_state::keyC1)); - m_tms9901->p_out_cb(4).set(FUNC(ti99_4x_state::keyC2)); - m_tms9901->p_out_cb(6).set(FUNC(ti99_4x_state::cs1_motor)); - m_tms9901->p_out_cb(7).set(FUNC(ti99_4x_state::cs2_motor)); - m_tms9901->p_out_cb(8).set(FUNC(ti99_4x_state::audio_gate)); - m_tms9901->p_out_cb(9).set(FUNC(ti99_4x_state::cassette_output)); - m_tms9901->intreq_cb().set(FUNC(ti99_4x_state::tms9901_interrupt)); - - // Databus multiplexer - TI99_DATAMUX(config, m_datamux, 0).ready_cb().set(FUNC(ti99_4x_state::console_ready_dmux)); - - // Cartridge port (aka GROMport) - TI99_GROMPORT(config, m_gromport, 0, ti99_gromport_options, "single"); - m_gromport->ready_cb().set(FUNC(ti99_4x_state::console_ready_cart)); - m_gromport->reset_cb().set(FUNC(ti99_4x_state::console_reset)); - - // Scratch pad RAM 256 bytes - RAM(config, TI99_PADRAM_TAG).set_default_size("256").set_default_value(0); - - // Optional RAM expansion - RAM(config, TI99_EXPRAM_TAG).set_default_size("32K").set_default_value(0); - - // Software list - SOFTWARE_LIST(config, "cart_list_ti99").set_original("ti99_cart"); - - // Cassette drives. Second drive is record-only. - SPEAKER(config, "cass_out").front_center(); - CASSETTE(config, "cassette1", 0).add_route(ALL_OUTPUTS, "cass_out", 0.25); - CASSETTE(config, "cassette2", 0); - - // GROM devices - TMC0430(config, TI99_GROM0_TAG, TI99_CONSOLEGROM, 0x0000, 0).ready_cb().set(FUNC(ti99_4x_state::console_ready_grom)); - TMC0430(config, TI99_GROM1_TAG, TI99_CONSOLEGROM, 0x2000, 1).ready_cb().set(FUNC(ti99_4x_state::console_ready_grom)); - TMC0430(config, TI99_GROM2_TAG, TI99_CONSOLEGROM, 0x4000, 2).ready_cb().set(FUNC(ti99_4x_state::console_ready_grom)); -} - -/********************************************************************** - TI-99/4 - predecessor of the more popular TI-99/4A -***********************************************************************/ - -void ti99_4x_state::ti99_4(machine_config& config) -{ - // Common configuration - ti99_4_common(config); - m_model = MODEL_4; - - // Main board - // Add handset interrupt to 9901 - m_tms9901->p_out_cb(0).set(FUNC(ti99_4x_state::handset_ack)); - m_tms9901->read_cb().set(FUNC(ti99_4x_state::psi_input_4)); // use a separate one for 99/4 - - // Input/output port: normal config - TI99_IOPORT(config, m_ioport, 0, ti99_ioport_options_plain, nullptr); - m_ioport->extint_cb().set(FUNC(ti99_4x_state::extint)); - m_ioport->ready_cb().set(TI99_DATAMUX_TAG, FUNC(bus::ti99::internal::datamux_device::ready_line)); - - // Sound hardware (not in EVPC variant) - SPEAKER(config, "sound_out").front_center(); - sn94624_device& soundgen(SN94624(config, TI_SOUNDCHIP_TAG, 3579545/8)); - soundgen.ready_cb().set(FUNC(ti99_4x_state::console_ready_sound)); - soundgen.add_route(ALL_OUTPUTS, "sound_out", 0.75); - - // Joystick port. We can connect a joyport mouse or a handset (99/4-specific). - TI99_JOYPORT(config, m_joyport, 0, ti99_joyport_options_994, "twinjoy"); - m_joyport->int_cb().set(FUNC(ti99_4x_state::handset_interrupt_in)); -} - -/* - US version: 60 Hz, NTSC -*/ -void ti99_4x_state::ti99_4_60hz(machine_config &config) -{ - ti99_4(config); - TMS9918(config, m_video, XTAL(10'738'635)); - m_video->set_vram_size(0x4000); - m_video->int_callback().set(FUNC(ti99_4x_state::video_interrupt_in)); - m_video->gromclk_callback().set(FUNC(ti99_4x_state::gromclk_in)); - m_video->set_screen(TI_SCREEN_TAG); - - SCREEN(config, TI_SCREEN_TAG, SCREEN_TYPE_RASTER); -} - -/* - European version: 50 Hz, PAL -*/ -void ti99_4x_state::ti99_4_50hz(machine_config &config) -{ - ti99_4(config); - TMS9929(config, m_video, XTAL(10'738'635)); - m_video->set_vram_size(0x4000); - m_video->int_callback().set(FUNC(ti99_4x_state::video_interrupt_in)); - m_video->gromclk_callback().set(FUNC(ti99_4x_state::gromclk_in)); - m_video->set_screen(TI_SCREEN_TAG); - - SCREEN(config, TI_SCREEN_TAG, SCREEN_TYPE_RASTER); -} - -/********************************************************************** - TI-99/4A - replaced the 99/4 and became the standard TI-99 console -***********************************************************************/ - -void ti99_4x_state::ti99_4a(machine_config& config) -{ - // Common configuration - ti99_4_common(config); - m_model = MODEL_4A; - - // Main board - // Add Alphalock to 9901 - m_tms9901->p_out_cb(5).set(FUNC(ti99_4x_state::alphaW)); - m_tms9901->read_cb().set(FUNC(ti99_4x_state::psi_input_4a)); - - // Input/output port: Normal config - TI99_IOPORT(config, m_ioport, 0, ti99_ioport_options_plain, nullptr); - m_ioport->extint_cb().set(FUNC(ti99_4x_state::extint)); - m_ioport->ready_cb().set(TI99_DATAMUX_TAG, FUNC(bus::ti99::internal::datamux_device::ready_line)); - - // Sound hardware (not in EVPC variant) - SPEAKER(config, "sound_out").front_center(); - sn94624_device& soundgen(SN94624(config, TI_SOUNDCHIP_TAG, 3579545/8)); - soundgen.ready_cb().set(FUNC(ti99_4x_state::console_ready_sound)); - soundgen.add_route(ALL_OUTPUTS, "sound_out", 0.75); - - // Joystick port - TI99_JOYPORT(config, m_joyport, 0, ti99_joyport_options_mouse, "twinjoy"); -} - -/* - US version: 60 Hz, NTSC -*/ -void ti99_4x_state::ti99_4a_60hz(machine_config &config) -{ - ti99_4a(config); - TMS9918A(config, m_video, XTAL(10'738'635)); - m_video->set_vram_size(0x4000); - m_video->int_callback().set(FUNC(ti99_4x_state::video_interrupt_in)); - m_video->gromclk_callback().set(FUNC(ti99_4x_state::gromclk_in)); - m_video->set_screen(TI_SCREEN_TAG); - - SCREEN(config, TI_SCREEN_TAG, SCREEN_TYPE_RASTER); -} - -/* - European version: 50 Hz, PAL -*/ -void ti99_4x_state::ti99_4a_50hz(machine_config &config) -{ - ti99_4a(config); - TMS9929A(config, m_video, XTAL(10'738'635)); - m_video->set_vram_size(0x4000); - m_video->int_callback().set(FUNC(ti99_4x_state::video_interrupt_in)); - m_video->gromclk_callback().set(FUNC(ti99_4x_state::gromclk_in)); - m_video->set_screen(TI_SCREEN_TAG); - - SCREEN(config, TI_SCREEN_TAG, SCREEN_TYPE_RASTER); -} - -/************************************************************************ - TI-99/4QI - the final version of the TI-99/4A - This was a last modification of the console. One purpose was to lower - production costs by a redesigned board layout. The other was that TI - removed the ROM search for cartridges so that only cartridges with GROMs - could be started, effectively kicking out all third-party cartridges like - those from Atarisoft. -*************************************************************************/ - -/* - US version: 60 Hz, NTSC - There were no European versions. -*/ -void ti99_4x_state::ti99_4qi_60hz(machine_config &config) -{ - ti99_4a(config); - m_model = MODEL_4QI; - - TMS9918A(config, m_video, XTAL(10'738'635)); - m_video->set_vram_size(0x4000); - m_video->int_callback().set(FUNC(ti99_4x_state::video_interrupt_in)); - m_video->gromclk_callback().set(FUNC(ti99_4x_state::gromclk_in)); - m_video->set_screen(TI_SCREEN_TAG); - - SCREEN(config, TI_SCREEN_TAG, SCREEN_TYPE_RASTER); -} - -/************************************************************************ - TI-99/4A with 80-column support. Actually a separate expansion card (EVPC), - replacing the console video processor. - - Note that the sound chip is also moved to this card, because the SGCPU, - which is intended to use the EVPC, does not have an own sound chip. -*************************************************************************/ - -void ti99_4x_state::ti99_4ev_60hz(machine_config& config) -{ - // Common configuration - ti99_4_common(config); - m_model = MODEL_4EV; - - // Main board - // Add Alphalock - m_tms9901->p_out_cb(5).set(FUNC(ti99_4x_state::alphaW)); - m_tms9901->read_cb().set(FUNC(ti99_4x_state::psi_input_4a)); - - // EVPC connector - // This is needed for delivering the video interrupt from the - // EVPC expansion card into the console, after the video processor has been removed - TI99_EVPCCONN(config, TI99_EVPC_CONN_TAG, 0).vdpint_cb().set(FUNC(ti99_4x_state::video_interrupt_evpc_in)); - - // Input/output port: Configure for EVPC - TI99_IOPORT(config, m_ioport, 0, ti99_ioport_options_evpc, "peb"); - m_ioport->extint_cb().set(FUNC(ti99_4x_state::extint)); - m_ioport->ready_cb().set(TI99_DATAMUX_TAG, FUNC(bus::ti99::internal::datamux_device::ready_line)); - - // Joystick port - // No joyport mouse, since we have a bus mouse with the EVPC - TI99_JOYPORT(config, m_joyport, 0, ti99_joyport_options_plain, "twinjoy"); -} - -/***************************************************************************** - ROM loading - Note that we use the same ROMset for 50Hz and 60Hz versions. - ROMs for peripheral equipment have been moved to the respective files. -******************************************************************************/ -#define rom_ti99_4e rom_ti99_4 -#define rom_ti99_4ae rom_ti99_4a - -ROM_START(ti99_4) - // CPU memory space - // ROM files do not have a CRC16 at their end - ROM_REGION16_BE(0x2000, TI99_CONSOLEROM, 0) - ROM_LOAD16_BYTE("994_rom_hb.u610", 0x0000, 0x1000, CRC(6fcf4b15) SHA1(d085213c64701d429ae535f9a4ac8a50427a8343)) /* CPU ROMs high */ - ROM_LOAD16_BYTE("994_rom_lb.u611", 0x0001, 0x1000, CRC(491c21d1) SHA1(7741ae9294c51a44a78033d1b77c01568a6bbfb9)) /* CPU ROMs low */ - - // GROM memory space - // GROM files do not have a CRC16 at their end - ROM_REGION(0x6000, TI99_CONSOLEGROM, 0) - ROM_LOAD("994_grom0.u500", 0x0000, 0x1800, CRC(aa757e13) SHA1(4658d3d01c0131c283a30cebd12e76754d41a84a)) /* system GROM 0 */ - ROM_LOAD("994_grom1.u501", 0x2000, 0x1800, CRC(c863e460) SHA1(6d849a76011273a069a98ed0c3feaf13831c942f)) /* system GROM 1 */ - ROM_LOAD("994_grom2.u502", 0x4000, 0x1800, CRC(b0eda548) SHA1(725e3f26f8c819f356e4bb405b4102b5ae1e0e70)) /* system GROM 2 */ -ROM_END - -ROM_START(ti99_4a) - // CPU memory space - // ROM files have valid CRC16 as last word - ROM_REGION16_BE(0x2000, TI99_CONSOLEROM, 0) - ROM_LOAD16_BYTE("994a_rom_hb.u610", 0x0000, 0x1000, CRC(ee859c5f) SHA1(a45245707c3dccea902b718554a882d214a82504)) /* CPU ROMs high */ - ROM_LOAD16_BYTE("994a_rom_lb.u611", 0x0001, 0x1000, CRC(37859301) SHA1(f4e774fd5913b387a763f1b8de5524c54b255434)) /* CPU ROMs low */ - - // GROM memory space - // GROM files have valid CRC16 as last word - ROM_REGION(0x6000, TI99_CONSOLEGROM, 0) - ROM_LOAD("994a_grom0.u500", 0x0000, 0x1800, CRC(2445a5e8) SHA1(ea15d8b0ac52112dc0d5f4ab9a79ac8ca1cc1bbc)) /* system GROM 0 */ - ROM_LOAD("994a_grom1.u501", 0x2000, 0x1800, CRC(b8f367ab) SHA1(3ecead4b83ec525084c70b6123d4053f8a80e1f7)) /* system GROM 1 */ - ROM_LOAD("994a_grom2.u502", 0x4000, 0x1800, CRC(e0bb5341) SHA1(e255f0d65d69b927cecb8fcfac7a4c17d585ea96)) /* system GROM 2 */ -ROM_END - -ROM_START(ti99_4qi) - // CPU memory space - // ROM files are the same as for TI-99/4A, but located in sockets u3 and u5 - ROM_REGION16_BE(0x2000, TI99_CONSOLEROM, 0) - ROM_LOAD16_BYTE("994a_rom_hb.u610", 0x0000, 0x1000, CRC(ee859c5f) SHA1(a45245707c3dccea902b718554a882d214a82504)) /* CPU ROMs high */ - ROM_LOAD16_BYTE("994a_rom_lb.u611", 0x0001, 0x1000, CRC(37859301) SHA1(f4e774fd5913b387a763f1b8de5524c54b255434)) /* CPU ROMs low */ - - // GROM memory space - // GROM files have valid CRC16 as last word - // GROM1 and GROM2 are the same as for TI-99/4A, located in u30 and u31 - ROM_REGION(0x6000, TI99_CONSOLEGROM, 0) - ROM_LOAD("994qi_grom0.u29", 0x0000, 0x1800, CRC(8b07772d) SHA1(95dcf5b7350ade65297eadd2d680c27561cc975c)) /* system GROM 0 */ - ROM_LOAD("994a_grom1.u501", 0x2000, 0x1800, CRC(b8f367ab) SHA1(3ecead4b83ec525084c70b6123d4053f8a80e1f7)) /* system GROM 1 */ - ROM_LOAD("994a_grom2.u502", 0x4000, 0x1800, CRC(e0bb5341) SHA1(e255f0d65d69b927cecb8fcfac7a4c17d585ea96)) /* system GROM 2 */ -ROM_END - -ROM_START(ti99_4ev) - // CPU memory space - // ROM files have valid CRC16 as last word - // ROM files are the same as for TI-99/4A - ROM_REGION16_BE(0x2000, TI99_CONSOLEROM, 0) - ROM_LOAD16_BYTE("994a_rom_hb.u610", 0x0000, 0x1000, CRC(ee859c5f) SHA1(a45245707c3dccea902b718554a882d214a82504)) /* CPU ROMs high */ - ROM_LOAD16_BYTE("994a_rom_lb.u611", 0x0001, 0x1000, CRC(37859301) SHA1(f4e774fd5913b387a763f1b8de5524c54b255434)) /* CPU ROMs low */ - - // GROM memory space - // GROM files have valid CRC16 as last word - // GROM1 has been patched to support the EVPC, but the CRC16 was not updated, being invalid now - ROM_REGION(0x6000, TI99_CONSOLEGROM, 0) - ROM_LOAD("994a_grom0.u500", 0x0000, 0x1800, CRC(2445a5e8) SHA1(ea15d8b0ac52112dc0d5f4ab9a79ac8ca1cc1bbc)) /* system GROM 0 */ - ROM_LOAD("994ev_grom1.u501", 0x2000, 0x1800, CRC(6885326d) SHA1(1a98de5ee886dce705de5cce11034a7be31aceac)) /* system GROM 1 */ - ROM_LOAD("994a_grom2.u502", 0x4000, 0x1800, CRC(e0bb5341) SHA1(e255f0d65d69b927cecb8fcfac7a4c17d585ea96)) /* system GROM 2 */ -ROM_END - -// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS -COMP( 1979, ti99_4, 0, 0, ti99_4_60hz, ti99_4, ti99_4x_state, empty_init, "Texas Instruments", "TI-99/4 Home Computer (US)", MACHINE_SUPPORTS_SAVE) -COMP( 1980, ti99_4e, ti99_4, 0, ti99_4_50hz, ti99_4, ti99_4x_state, empty_init, "Texas Instruments", "TI-99/4 Home Computer (Europe)", MACHINE_SUPPORTS_SAVE) -COMP( 1981, ti99_4a, 0, 0, ti99_4a_60hz, ti99_4a, ti99_4x_state, empty_init, "Texas Instruments", "TI-99/4A Home Computer (US)", MACHINE_SUPPORTS_SAVE) -COMP( 1981, ti99_4ae, ti99_4a, 0, ti99_4a_50hz, ti99_4a, ti99_4x_state, empty_init, "Texas Instruments", "TI-99/4A Home Computer (Europe)", MACHINE_SUPPORTS_SAVE) -COMP( 1983, ti99_4qi, ti99_4a, 0, ti99_4qi_60hz, ti99_4a, ti99_4x_state, empty_init, "Texas Instruments", "TI-99/4QI Home Computer (US)", MACHINE_SUPPORTS_SAVE) -COMP( 1994, ti99_4ev, ti99_4a, 0, ti99_4ev_60hz, ti99_4a, ti99_4x_state, empty_init, "Texas Instruments", "TI-99/4A Home Computer with EVPC", MACHINE_SUPPORTS_SAVE) |