diff options
Diffstat (limited to 'src/mame/drivers/alphatro.cpp')
-rw-r--r-- | src/mame/drivers/alphatro.cpp | 518 |
1 files changed, 518 insertions, 0 deletions
diff --git a/src/mame/drivers/alphatro.cpp b/src/mame/drivers/alphatro.cpp new file mode 100644 index 00000000000..127389e6a9c --- /dev/null +++ b/src/mame/drivers/alphatro.cpp @@ -0,0 +1,518 @@ +// license:BSD-3-Clause +// copyright-holders:Barry Rodewald, Robbbert +/*************************************************************************** + + Triumph-Adler (or Royal) Alphatronic PC + + skeleton driver + + z80 + HD46505SP as a CRTC + + Other chips: 8251, 8257, 8259 + Crystals: 16MHz, 17.73447MHz + Floppy format: 13cm, 2 sides, 40 tracks, 16 sectors, 256 bytes = 320kb. + FDC (uPD765) is in a plug-in module, with an undumped rom. + + Has a socket for monochrome (to the standard amber monitor), + and another for RGB. We emulate this with a configuration switch. + + This machine has 64k RAM, the ROMs being copied into RAM when + needed. + + There are several mystery ports which might be connected to the floppy + disk system. These are Port 30 (in and out), Port 20 (out) and certain + bits of Port 10 (in). This unit communicates via a simple parallel + interface. + + Port 10 bit 6 when high switches A000-DFFF over to roms that are in + a cart which is plugged into the RomPack socket. If C3 is found at + A000 or C000, then a jump is made to that address. It is however + possible that one of these addresses might be for the rom in the + floppy controller unit. + + + ToDo: + - Add fdc, then connect up software list + +***************************************************************************/ + +#include "emu.h" +#include "cpu/z80/z80.h" +#include "video/mc6845.h" +#include "machine/i8251.h" +#include "machine/clock.h" +#include "imagedev/cassette.h" +#include "sound/beep.h" +#include "sound/wave.h" +#include "machine/ram.h" +#include "softlist.h" + +#define MAIN_CLOCK XTAL_4MHz + + +class alphatro_state : public driver_device +{ +public: + enum + { + TIMER_SYSTEM + }; + + alphatro_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag) + , m_p_videoram(*this, "videoram") + , m_maincpu(*this, "maincpu") + , m_crtc(*this, "crtc") + , m_usart(*this, "usart") + , m_cass(*this, "cassette") + , m_beep(*this, "beeper") + , m_p_ram(*this, "main_ram"), + m_palette(*this, "palette") + { } + + DECLARE_READ8_MEMBER(port10_r); + DECLARE_WRITE8_MEMBER(port10_w); + DECLARE_INPUT_CHANGED_MEMBER(alphatro_break); + DECLARE_WRITE_LINE_MEMBER(txdata_callback); + DECLARE_WRITE_LINE_MEMBER(write_usart_clock); + DECLARE_PALETTE_INIT(alphatro); + TIMER_DEVICE_CALLBACK_MEMBER(timer_c); + TIMER_DEVICE_CALLBACK_MEMBER(timer_p); + MC6845_UPDATE_ROW(crtc_update_row); + required_shared_ptr<UINT8> m_p_videoram; + UINT8 *m_p_chargen; + UINT8 m_flashcnt; + +private: + UINT8 m_timer_bit; + UINT8 m_cass_data[4]; + bool m_cass_state; + bool m_cassold; + emu_timer* m_sys_timer; + virtual void video_start(); + virtual void machine_start(); + virtual void machine_reset(); + virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr); + required_device<cpu_device> m_maincpu; + required_device<mc6845_device> m_crtc; + required_device<i8251_device> m_usart; + required_device<cassette_image_device> m_cass; + required_device<beep_device> m_beep; + required_shared_ptr<UINT8> m_p_ram; +public: + required_device<palette_device> m_palette; +}; + +READ8_MEMBER( alphatro_state::port10_r ) +{ + //return (space.machine().device<screen_device>("screen")->vblank() ? 0x00 : 0x80); + return m_timer_bit; +} + +WRITE8_MEMBER( alphatro_state::port10_w ) +{ +// Bit 0 -> 0 = 40 cols; 1 = 80 cols +// Bit 1 ? each keystroke, and a lot when it scrolls +// Bit 2 ? after a cload +// Bit 3 -> cassette relay +// Bit 4 -> BEEP +// Bit 6 -> 1 = select ROM pack + + data &= 0xfe; + + m_beep->set_state(BIT(data, 4)); + + m_cass->change_state( BIT(data, 3) ? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR); + + if (BIT(data,2)) + m_cass_state = 1; +} + +void alphatro_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) +{ + switch(id) + { + case TIMER_SYSTEM: + m_timer_bit ^= 0x80; + break; + default: + assert_always(FALSE, "Unknown id in alphatro_state::device_timer"); + } +} + +WRITE_LINE_MEMBER( alphatro_state::txdata_callback ) +{ + m_cass_state = state; +} + +WRITE_LINE_MEMBER( alphatro_state::write_usart_clock ) +{ + m_usart->write_txc(state); + m_usart->write_rxc(state); +} + +void alphatro_state::video_start() +{ + m_p_chargen = memregion("chargen")->base(); +} + +MC6845_UPDATE_ROW( alphatro_state::crtc_update_row ) +{ + const rgb_t *pens = m_palette->palette()->entry_list_raw(); + bool palette = BIT(ioport("CONFIG")->read(), 5); + if (y==0) m_flashcnt++; + bool inv; + UINT8 chr,gfx,attr,bg,fg; + UINT16 mem,x; + UINT32 *p = &bitmap.pix32(y); + + for (x = 0; x < x_count; x++) + { + inv = (x == cursor_x); + mem = (ma + x) & 0x7ff; + chr = m_p_videoram[mem]; + attr = m_p_videoram[mem | 0x800]; + bg = (palette) ? 8 : attr & 7; // amber or RGB + fg = (palette) ? 0 : (attr & 0x38) >> 3; + + if BIT(attr, 7) // reverse video + { + inv ^= 1; + chr &= 0x7f; + } + + if (BIT(attr, 6) & BIT(m_flashcnt, 4)) // flashing + { + inv ^= 1; + } + + /* get pattern of pixels for that character scanline */ + gfx = m_p_chargen[(chr<<4) | ra]; + + if (inv) + { + UINT8 t = bg; + bg = fg; + fg = t; + } + + /* Display a scanline of a character (8 pixels) */ + *p++ = pens[BIT(gfx, 7) ? fg : bg]; + *p++ = pens[BIT(gfx, 6) ? fg : bg]; + *p++ = pens[BIT(gfx, 5) ? fg : bg]; + *p++ = pens[BIT(gfx, 4) ? fg : bg]; + *p++ = pens[BIT(gfx, 3) ? fg : bg]; + *p++ = pens[BIT(gfx, 2) ? fg : bg]; + *p++ = pens[BIT(gfx, 1) ? fg : bg]; + *p++ = pens[BIT(gfx, 0) ? fg : bg]; + } +} + +INPUT_CHANGED_MEMBER( alphatro_state::alphatro_break ) +{ + m_maincpu->set_input_line(INPUT_LINE_IRQ0, HOLD_LINE); +} + +static ADDRESS_MAP_START( alphatro_map, AS_PROGRAM, 8, alphatro_state ) + AM_RANGE(0x0000, 0xefff) AM_RAM AM_SHARE("main_ram") + AM_RANGE(0xf000, 0xffff) AM_RAM AM_SHARE("videoram") +ADDRESS_MAP_END + +static ADDRESS_MAP_START( alphatro_io, AS_IO, 8, alphatro_state ) + ADDRESS_MAP_GLOBAL_MASK(0xff) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE(0x10, 0x10) AM_READWRITE(port10_r,port10_w) + AM_RANGE(0x20, 0x20) AM_READ_PORT("X0") + AM_RANGE(0x21, 0x21) AM_READ_PORT("X1") + AM_RANGE(0x22, 0x22) AM_READ_PORT("X2") + AM_RANGE(0x23, 0x23) AM_READ_PORT("X3") + AM_RANGE(0x24, 0x24) AM_READ_PORT("X4") + AM_RANGE(0x25, 0x25) AM_READ_PORT("X5") + AM_RANGE(0x26, 0x26) AM_READ_PORT("X6") + AM_RANGE(0x27, 0x27) AM_READ_PORT("X7") + AM_RANGE(0x28, 0x28) AM_READ_PORT("X8") + AM_RANGE(0x29, 0x29) AM_READ_PORT("X9") + AM_RANGE(0x2a, 0x2a) AM_READ_PORT("XA") + AM_RANGE(0x2b, 0x2b) AM_READ_PORT("XB") + //AM_RANGE(0x30, 0x30) unknown + // USART for cassette reading and writing + AM_RANGE(0x40, 0x40) AM_DEVREADWRITE("usart", i8251_device, data_r, data_w) + AM_RANGE(0x41, 0x41) AM_DEVREADWRITE("usart", i8251_device, status_r, control_w) + // CRTC - HD46505 / HD6845SP + AM_RANGE(0x50, 0x50) AM_DEVWRITE("crtc", mc6845_device, address_w) + AM_RANGE(0x51, 0x51) AM_DEVREADWRITE("crtc", mc6845_device, register_r, register_w) +ADDRESS_MAP_END + +static INPUT_PORTS_START( alphatro ) + PORT_START("X0") + PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 0") PORT_CODE(KEYCODE_0_PAD) PORT_CHAR(UCHAR_MAMEKEY(0_PAD)) + PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 1") PORT_CODE(KEYCODE_1_PAD) PORT_CHAR(UCHAR_MAMEKEY(1_PAD)) + PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 2") PORT_CODE(KEYCODE_2_PAD) PORT_CHAR(UCHAR_MAMEKEY(2_PAD)) + PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 3") PORT_CODE(KEYCODE_3_PAD) PORT_CHAR(UCHAR_MAMEKEY(3_PAD)) + PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 4") PORT_CODE(KEYCODE_4_PAD) PORT_CHAR(UCHAR_MAMEKEY(4_PAD)) + PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 5") PORT_CODE(KEYCODE_5_PAD) PORT_CHAR(UCHAR_MAMEKEY(5_PAD)) + PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 6") PORT_CODE(KEYCODE_6_PAD) PORT_CHAR(UCHAR_MAMEKEY(6_PAD)) + PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 7") PORT_CODE(KEYCODE_7_PAD) PORT_CHAR(UCHAR_MAMEKEY(7_PAD)) + + PORT_START("X1") + PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 8") PORT_CODE(KEYCODE_8_PAD) PORT_CHAR(UCHAR_MAMEKEY(8_PAD)) + PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 9") PORT_CODE(KEYCODE_9_PAD) PORT_CHAR(UCHAR_MAMEKEY(9_PAD)) + PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad .") PORT_CODE(KEYCODE_DEL_PAD) + PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad - /") PORT_CODE(KEYCODE_MINUS_PAD) + PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad =") PORT_CODE(KEYCODE_ASTERISK) // keypad equals + PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad + x") PORT_CODE(KEYCODE_PLUS_PAD) + + PORT_START("X2") + PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') + PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') + PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') + PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') + PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E') + PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') + PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("G") PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') + + PORT_START("X3") + PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("H") PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') + PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("I") PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') + PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("J") PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') + PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("K") PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') + PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("L") PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') + PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("M") PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') + PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("N") PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') + PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("O") PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') + + PORT_START("X4") + PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("P") PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') + PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Q") PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') + PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("R") PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') + PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("S") PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') + PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("T") PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') + PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("U") PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') + PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("V") PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') + PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("W") PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') + + PORT_START("X5") + PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("X") PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') + PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Y") PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') + PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Z") PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') + + PORT_START("X6") + PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR('_') + PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("1") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') + PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("2") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('\"') + PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("3") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR(0xa3) + PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("4") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') + PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("5") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') + PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("6") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&') + PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("7") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'') + + PORT_START("X7") + PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("8") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(') + PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("9") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')') + PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("- =") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=') + PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("^ ~") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('^') PORT_CHAR('~') + PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("@ `") PORT_CODE(KEYCODE_DEL) PORT_CHAR('@') PORT_CHAR('`') + PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("[ {") PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('{') + PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("] }") PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('}') + PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME(": *") PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(':') PORT_CHAR('*') + + PORT_START("X8") + PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Space") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(32) + PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("\\ |") PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|') + PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME(", <") PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<') + PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME(". >") PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>') + PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("/ ?") PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?') + PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("; +") PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR('+') + + PORT_START("X9") + PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Down") PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) + PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Right") PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(UP)) + PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Left") PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) + PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Up") PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP)) + PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Lock") PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) + PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Ctrl") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_SHIFT_2) + + PORT_START("XA") + PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("INS DEL") PORT_CODE(KEYCODE_BACKSPACE) + PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Shift") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1) + PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Tab") PORT_CODE(KEYCODE_TAB) PORT_CHAR(9) + PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Enter") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) + PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Graph") PORT_CODE(KEYCODE_PGUP) + PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Clear Home") PORT_CODE(KEYCODE_HOME) + PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("ESC") PORT_CODE(KEYCODE_ESC) PORT_CHAR(27) + + PORT_START("XB") + PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("F6") PORT_CODE(KEYCODE_F6) + PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("F5") PORT_CODE(KEYCODE_F5) + PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("F4") PORT_CODE(KEYCODE_F4) + PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("F3") PORT_CODE(KEYCODE_F3) + PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("F2") PORT_CODE(KEYCODE_F2) + PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("F1") PORT_CODE(KEYCODE_F1) + + PORT_START("other") + PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Break") PORT_CODE(KEYCODE_ESC) PORT_CHANGED_MEMBER(DEVICE_SELF,alphatro_state,alphatro_break,0) + + PORT_START("CONFIG") + PORT_CONFNAME( 0x20, 0x00, "Monitor") + PORT_CONFSETTING( 0x00, "RGB") + PORT_CONFSETTING( 0x20, "Amber") +INPUT_PORTS_END + +static const gfx_layout charlayout = +{ + 8,16, + RGN_FRAC(1,1), + 1, + { RGN_FRAC(0,1) }, + { 0, 1, 2, 3, 4, 5, 6, 7 }, + { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 }, + 8*16 +}; + +static GFXDECODE_START( alphatro ) + GFXDECODE_ENTRY( "chargen", 0, charlayout, 0, 4 ) +GFXDECODE_END + +void alphatro_state::machine_start() +{ + m_sys_timer = timer_alloc(TIMER_SYSTEM); +} + +void alphatro_state::machine_reset() +{ + // do what the IPL does + UINT8* ROM = memregion("roms")->base(); + m_maincpu->set_pc(0xe000); + // If BASIC is missing then it boots into the Monitor + memcpy(m_p_ram, ROM, 0x6000); // Copy BASIC to RAM + // Top half of this rom has keyboard tables and appears to be unused + memcpy(m_p_ram+0xe000, ROM+0xe000, 0x1000); // copy BIOS + Monitor to RAM + + // probably not correct, exact meaning of port is unknown, vblank/vsync is too slow. + m_sys_timer->adjust(attotime::from_usec(10),0,attotime::from_usec(10)); + m_timer_bit = 0; + m_cass_data[0] = m_cass_data[1] = m_cass_data[2] = m_cass_data[3] = 0; + m_cass_state = 0; + m_cassold = 0; + m_usart->write_rxd(0); + m_beep->set_state(0); + m_beep->set_frequency(950); /* piezo-device needs to be measured */ +} + +PALETTE_INIT_MEMBER(alphatro_state, alphatro) +{ + // RGB colours + palette.set_pen_color(0, 0x00, 0x00, 0x00); + palette.set_pen_color(1, 0x00, 0x00, 0xff); + palette.set_pen_color(2, 0xff, 0x00, 0x00); + palette.set_pen_color(3, 0xff, 0x00, 0xff); + palette.set_pen_color(4, 0x00, 0xff, 0x00); + palette.set_pen_color(5, 0x00, 0xff, 0xff); + palette.set_pen_color(6, 0xff, 0xff, 0x00); + palette.set_pen_color(7, 0xff, 0xff, 0xff); + // Amber + palette.set_pen_color(8, 0xf7, 0xaa, 0x00); +} + + +TIMER_DEVICE_CALLBACK_MEMBER(alphatro_state::timer_c) +{ + m_cass_data[3]++; + + if (m_cass_state != m_cassold) + { + m_cass_data[3] = 0; + m_cassold = m_cass_state; + } + + if (m_cass_state) + m_cass->output(BIT(m_cass_data[3], 0) ? -1.0 : +1.0); // 2400Hz + else + m_cass->output(BIT(m_cass_data[3], 1) ? -1.0 : +1.0); // 1200Hz +} + +TIMER_DEVICE_CALLBACK_MEMBER(alphatro_state::timer_p) +{ + /* cassette - turn 1200/2400Hz to a bit */ + m_cass_data[1]++; + UINT8 cass_ws = (m_cass->input() > +0.03) ? 1 : 0; + + if (cass_ws != m_cass_data[0]) + { + m_cass_data[0] = cass_ws; + m_usart->write_rxd((m_cass_data[1] < 12) ? 1 : 0); + m_cass_data[1] = 0; + } +} + +static MACHINE_CONFIG_START( alphatro, alphatro_state ) + + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu",Z80,MAIN_CLOCK) + MCFG_CPU_PROGRAM_MAP(alphatro_map) + MCFG_CPU_IO_MAP(alphatro_io) + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_REFRESH_RATE(60) + MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) // not correct + MCFG_SCREEN_UPDATE_DEVICE("crtc", mc6845_device, screen_update) + MCFG_SCREEN_SIZE(32*8, 32*8) + MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1) + MCFG_GFXDECODE_ADD("gfxdecode", "palette", alphatro) + MCFG_PALETTE_ADD("palette", 9) // 8 colours + amber + MCFG_PALETTE_INIT_OWNER(alphatro_state, alphatro) + + /* sound hardware */ + MCFG_SPEAKER_STANDARD_MONO("mono") + MCFG_SOUND_ADD("beeper", BEEP, 0) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00) + MCFG_SOUND_WAVE_ADD(WAVE_TAG, "cassette") + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) + + /* Devices */ + MCFG_MC6845_ADD("crtc", MC6845, "screen", XTAL_12_288MHz / 8) // clk unknown + MCFG_MC6845_SHOW_BORDER_AREA(false) + MCFG_MC6845_CHAR_WIDTH(8) + MCFG_MC6845_UPDATE_ROW_CB(alphatro_state, crtc_update_row) + + MCFG_DEVICE_ADD("usart", I8251, 0) + MCFG_I8251_TXD_HANDLER(WRITELINE(alphatro_state, txdata_callback)) + + MCFG_DEVICE_ADD("usart_clock", CLOCK, 19218) // 19218 to load a real tape, 19222 to load a tape made by this driver + MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(alphatro_state, write_usart_clock)) + + MCFG_CASSETTE_ADD("cassette") + MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_PLAY | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_ENABLED) + MCFG_CASSETTE_INTERFACE("alphatro_cass") + + MCFG_TIMER_DRIVER_ADD_PERIODIC("timer_c", alphatro_state, timer_c, attotime::from_hz(4800)) + MCFG_TIMER_DRIVER_ADD_PERIODIC("timer_p", alphatro_state, timer_p, attotime::from_hz(40000)) + + MCFG_RAM_ADD("ram") + MCFG_RAM_DEFAULT_SIZE("64K") + + // software list + MCFG_SOFTWARE_LIST_ADD("flop_list", "alphatro_flop") +MACHINE_CONFIG_END + + +/*************************************************************************** + + Game driver(s) + +***************************************************************************/ + +ROM_START( alphatro ) + ROM_REGION( 0x10000, "roms", ROMREGION_ERASE00) + ROM_LOAD( "613256.ic-1058", 0x0000, 0x6000, CRC(ceea4cb3) SHA1(b332dea0a2d3bb2978b8422eb0723960388bb467) ) + ROM_LOAD( "2764.ic-1038", 0xe000, 0x2000, CRC(e337db3b) SHA1(6010bade6a21975636383179903b58a4ca415e49) ) + + ROM_REGION( 0x10000, "user1", ROMREGION_ERASE00 ) + ROM_LOAD( "ipl.bin", 0x8000, 0x2000, NO_DUMP ) + + ROM_REGION( 0x1000, "chargen", 0 ) + ROM_LOAD( "2732.ic-1067", 0x0000, 0x1000, CRC(61f38814) SHA1(35ba31c58a10d5bd1bdb202717792ca021dbe1a8) ) +ROM_END + +COMP( 1983, alphatro, 0, 0, alphatro, alphatro, driver_device, 0, "Triumph-Adler", "Alphatronic PC", MACHINE_NOT_WORKING ) |