diff options
Diffstat (limited to 'src/mame/drivers/samcoupe.cpp')
-rw-r--r-- | src/mame/drivers/samcoupe.cpp | 621 |
1 files changed, 621 insertions, 0 deletions
diff --git a/src/mame/drivers/samcoupe.cpp b/src/mame/drivers/samcoupe.cpp new file mode 100644 index 00000000000..ba3cb454cf6 --- /dev/null +++ b/src/mame/drivers/samcoupe.cpp @@ -0,0 +1,621 @@ +// license:GPL-2.0+ +// copyright-holders:Lee Hammerton, Dirk Best +/*************************************************************************** + + Miles Gordon Technology SAM Coupe + + Notes: + ------ + + Beware - the early ROMs are very buggy, and tend to go mad once BASIC + starts paging. ROM 10 (version 1.0) requires the CALL after F9 or BOOT + because the ROM loads the bootstrap but fails to execute it. The address + depends on the RAM size: + + On a 256K SAM: CALL 229385 + Or on a 512K (or larger) machine: CALL 491529 + + + Todo: + ----- + + - Attribute read + - Better timing + - Harddisk interfaces + +***************************************************************************/ + +/* core includes */ +#include "emu.h" +#include "includes/samcoupe.h" +# +/* components */ +#include "cpu/z80/z80.h" +#include "sound/saa1099.h" + +/* devices */ +#include "formats/tzx_cas.h" +#include "formats/coupedsk.h" +#include "softlist.h" + +/*************************************************************************** + CONSTANTS +***************************************************************************/ + +#define SAMCOUPE_XTAL_X1 XTAL_24MHz +#define SAMCOUPE_XTAL_X2 XTAL_4_433619MHz + + +/*************************************************************************** + TIMERS +***************************************************************************/ + +void samcoupe_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) +{ + switch (id) + { + case TIMER_IRQ_OFF: + irq_off(ptr, param); + break; + case TIMER_MOUSE_RESET: + samcoupe_mouse_reset(ptr, param); + break; + case TIMER_VIDEO_UPDATE: + sam_video_update_callback(ptr, param); + break; + default: + assert_always(FALSE, "Unknown id in samcoupe_state::device_timer"); + } +} + +/*************************************************************************** + I/O PORTS +***************************************************************************/ + +READ8_MEMBER(samcoupe_state::samcoupe_disk_r) +{ + /* drive and side is encoded into bit 5 and 3 */ + floppy_connector *con = (BIT(offset, 4) ? m_wd1772_1 : m_wd1772_0); + floppy_image_device *floppy = con ? con->get_device() : 0; + + if(floppy) + floppy->ss_w(BIT(offset, 2)); + m_fdc->set_floppy(floppy); + + /* bit 1 and 2 select the controller register */ + switch (offset & 0x03) + { + case 0: return m_fdc->status_r(); + case 1: return m_fdc->track_r(); + case 2: return m_fdc->sector_r(); + case 3: return m_fdc->data_r(); + } + + return 0xff; +} + +WRITE8_MEMBER(samcoupe_state::samcoupe_disk_w) +{ + /* drive and side is encoded into bit 5 and 3 */ + floppy_connector *con = (BIT(offset, 4) ? m_wd1772_1 : m_wd1772_0); + floppy_image_device *floppy = con ? con->get_device() : 0; + + if(floppy) + floppy->ss_w(BIT(offset, 2)); + m_fdc->set_floppy(floppy); + + /* bit 1 and 2 select the controller register */ + switch (offset & 0x03) + { + case 0: m_fdc->cmd_w(data); break; + case 1: m_fdc->track_w(data); break; + case 2: m_fdc->sector_w(data); break; + case 3: m_fdc->data_w(data); break; + } +} + +READ8_MEMBER(samcoupe_state::samcoupe_pen_r) +{ + screen_device *scr = machine().first_screen(); + UINT8 data; + + if (offset & 0x100) + { + int vpos = scr->vpos(); + + /* return the current screen line or 192 for the border area */ + if (vpos < SAM_BORDER_TOP || vpos >= SAM_BORDER_TOP + SAM_SCREEN_HEIGHT) + data = 192; + else + data = vpos - SAM_BORDER_TOP; + } + else + { + /* horizontal position is encoded into bits 3 to 8 */ + data = scr->hpos() & 0xfc; + } + + return data; +} + +WRITE8_MEMBER(samcoupe_state::samcoupe_clut_w) +{ + m_clut[(offset >> 8) & 0x0f] = data & 0x7f; +} + +READ8_MEMBER(samcoupe_state::samcoupe_status_r) +{ + UINT8 data = 0xe0; + + /* bit 5-7, keyboard input */ + if (!BIT(offset, 8)) data &= m_keyboard_row_fe->read() & 0xe0; + if (!BIT(offset, 9)) data &= m_keyboard_row_fd->read() & 0xe0; + if (!BIT(offset, 10)) data &= m_keyboard_row_fb->read() & 0xe0; + if (!BIT(offset, 11)) data &= m_keyboard_row_f7->read() & 0xe0; + if (!BIT(offset, 12)) data &= m_keyboard_row_ef->read() & 0xe0; + if (!BIT(offset, 13)) data &= m_keyboard_row_df->read() & 0xe0; + if (!BIT(offset, 14)) data &= m_keyboard_row_bf->read() & 0xe0; + if (!BIT(offset, 15)) data &= m_keyboard_row_7f->read() & 0xe0; + + /* bit 0-4, interrupt source */ + data |= m_status; + + return data; +} + +WRITE8_MEMBER(samcoupe_state::samcoupe_line_int_w) +{ + m_line_int = data; +} + +READ8_MEMBER(samcoupe_state::samcoupe_lmpr_r) +{ + return m_lmpr; +} + +WRITE8_MEMBER(samcoupe_state::samcoupe_lmpr_w) +{ + address_space &space_program = m_maincpu->space(AS_PROGRAM); + + m_lmpr = data; + samcoupe_update_memory(space_program); +} + +READ8_MEMBER(samcoupe_state::samcoupe_hmpr_r) +{ + return m_hmpr; +} + +WRITE8_MEMBER(samcoupe_state::samcoupe_hmpr_w) +{ + address_space &space_program = m_maincpu->space(AS_PROGRAM); + + m_hmpr = data; + samcoupe_update_memory(space_program); +} + +READ8_MEMBER(samcoupe_state::samcoupe_vmpr_r) +{ + return m_vmpr; +} + +WRITE8_MEMBER(samcoupe_state::samcoupe_vmpr_w) +{ + address_space &space_program = m_maincpu->space(AS_PROGRAM); + + m_vmpr = data; + samcoupe_update_memory(space_program); +} + +READ8_MEMBER(samcoupe_state::samcoupe_midi_r) +{ + logerror("%s: read from midi port\n", machine().describe_context()); + return 0xff; +} + +WRITE8_MEMBER(samcoupe_state::samcoupe_midi_w) +{ + logerror("%s: write to midi port: 0x%02x\n", machine().describe_context(), data); +} + +READ8_MEMBER(samcoupe_state::samcoupe_keyboard_r) +{ + UINT8 data = 0x1f; + + /* bit 0-4, keyboard input */ + if (!BIT(offset, 8)) data &= m_keyboard_row_fe->read() & 0x1f; + if (!BIT(offset, 9)) data &= m_keyboard_row_fd->read() & 0x1f; + if (!BIT(offset, 10)) data &= m_keyboard_row_fb->read() & 0x1f; + if (!BIT(offset, 11)) data &= m_keyboard_row_f7->read() & 0x1f; + if (!BIT(offset, 12)) data &= m_keyboard_row_ef->read() & 0x1f; + if (!BIT(offset, 13)) data &= m_keyboard_row_df->read() & 0x1f; + if (!BIT(offset, 14)) data &= m_keyboard_row_bf->read() & 0x1f; + if (!BIT(offset, 15)) data &= m_keyboard_row_7f->read() & 0x1f; + + if (offset == 0xff00) + { + data &= m_keyboard_row_ff->read() & 0x1f; + + /* if no key has been pressed, return the mouse state */ + if (data == 0x1f) + data = samcoupe_mouse_r(); + } + + /* bit 5, lightpen strobe */ + data |= 1 << 5; + + /* bit 6, cassette input */ + data |= (m_cassette->input() > 0 ? 1 : 0) << 6; + + /* bit 7, external memory */ + data |= 1 << 7; + + return data; +} + +WRITE8_MEMBER(samcoupe_state::samcoupe_border_w) +{ + m_border = data; + + /* bit 3, cassette output */ + m_cassette->output( BIT(data, 3) ? -1.0 : +1.0); + + /* bit 4, beep */ + m_speaker->level_w(BIT(data, 4)); +} + +READ8_MEMBER(samcoupe_state::samcoupe_attributes_r) +{ + return m_attribute; +} + +WRITE_LINE_MEMBER(samcoupe_state::write_lpt1_busy) +{ + m_lpt1_busy = state; +} + +READ8_MEMBER(samcoupe_state::samcoupe_lpt1_busy_r) +{ + return m_lpt1_busy; +} + +WRITE8_MEMBER(samcoupe_state::samcoupe_lpt1_strobe_w) +{ + m_lpt1->write_strobe(data & 1); +} + +DECLARE_WRITE_LINE_MEMBER(samcoupe_state::write_lpt2_busy) +{ + m_lpt2_busy = state; +} + +READ8_MEMBER(samcoupe_state::samcoupe_lpt2_busy_r) +{ + return m_lpt2_busy; +} + +WRITE8_MEMBER(samcoupe_state::samcoupe_lpt2_strobe_w) +{ + m_lpt2->write_strobe(data & 1); +} + +/*************************************************************************** + ADDRESS MAPS +***************************************************************************/ + +static ADDRESS_MAP_START( samcoupe_mem, AS_PROGRAM, 8, samcoupe_state ) + AM_RANGE(0x0000, 0x3fff) AM_RAM AM_READWRITE(sam_bank1_r, sam_bank1_w) // AM_RAMBANK("bank1") + AM_RANGE(0x4000, 0x7fff) AM_RAM AM_READWRITE(sam_bank2_r, sam_bank2_w) // AM_RAMBANK("bank2") + AM_RANGE(0x8000, 0xbfff) AM_RAM AM_READWRITE(sam_bank3_r, sam_bank3_w) // AM_RAMBANK("bank3") + AM_RANGE(0xc000, 0xffff) AM_RAM AM_READWRITE(sam_bank4_r, sam_bank4_w) // AM_RAMBANK("bank4") +ADDRESS_MAP_END + +static ADDRESS_MAP_START( samcoupe_io, AS_IO, 8, samcoupe_state ) + AM_RANGE(0x0080, 0x0081) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_WRITE(samcoupe_ext_mem_w) + AM_RANGE(0x00e0, 0x00e7) AM_MIRROR(0xff10) AM_MASK(0xffff) AM_READWRITE(samcoupe_disk_r, samcoupe_disk_w) + AM_RANGE(0x00e8, 0x00e8) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_DEVWRITE("lpt1_data_out", output_latch_device, write) + AM_RANGE(0x00e9, 0x00e9) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READWRITE(samcoupe_lpt1_busy_r, samcoupe_lpt1_strobe_w) + AM_RANGE(0x00ea, 0x00ea) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_DEVWRITE("lpt2_data_out", output_latch_device, write) + AM_RANGE(0x00eb, 0x00eb) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READWRITE(samcoupe_lpt2_busy_r, samcoupe_lpt2_strobe_w) + AM_RANGE(0x00f8, 0x00f8) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READWRITE(samcoupe_pen_r, samcoupe_clut_w) + AM_RANGE(0x00f9, 0x00f9) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READWRITE(samcoupe_status_r, samcoupe_line_int_w) + AM_RANGE(0x00fa, 0x00fa) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READWRITE(samcoupe_lmpr_r, samcoupe_lmpr_w) + AM_RANGE(0x00fb, 0x00fb) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READWRITE(samcoupe_hmpr_r, samcoupe_hmpr_w) + AM_RANGE(0x00fc, 0x00fc) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READWRITE(samcoupe_vmpr_r, samcoupe_vmpr_w) + AM_RANGE(0x00fd, 0x00fd) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READWRITE(samcoupe_midi_r, samcoupe_midi_w) + AM_RANGE(0x00fe, 0x00fe) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READWRITE(samcoupe_keyboard_r, samcoupe_border_w) + AM_RANGE(0x00ff, 0x00ff) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READ(samcoupe_attributes_r) + AM_RANGE(0x00ff, 0x00ff) AM_MIRROR(0xfe00) AM_MASK(0xffff) AM_DEVWRITE("saa1099", saa1099_device, data_w) + AM_RANGE(0x01ff, 0x01ff) AM_MIRROR(0xfe00) AM_MASK(0xffff) AM_DEVWRITE("saa1099", saa1099_device, control_w) +ADDRESS_MAP_END + + +/*************************************************************************** + INTERRUPTS +***************************************************************************/ + +TIMER_CALLBACK_MEMBER(samcoupe_state::irq_off) +{ + /* adjust STATUS register */ + m_status |= param; + + /* clear interrupt */ + if ((m_status & 0x1f) == 0x1f) + m_maincpu->set_input_line(0, CLEAR_LINE); + +} + +void samcoupe_state::samcoupe_irq(UINT8 src) +{ + /* assert irq and a timer to set it off again */ + m_maincpu->set_input_line(0, ASSERT_LINE); + timer_set(attotime::from_usec(20), TIMER_IRQ_OFF, src); + + /* adjust STATUS register */ + m_status &= ~src; +} + +INTERRUPT_GEN_MEMBER(samcoupe_state::samcoupe_frame_interrupt) +{ + /* signal frame interrupt */ + samcoupe_irq(SAM_FRAME_INT); +} + + +/*************************************************************************** + INPUT PORTS +***************************************************************************/ + +static INPUT_PORTS_START( samcoupe ) + PORT_START("keyboard_row_fe") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') PORT_CHAR('?') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1_PAD) PORT_CHAR(UCHAR_MAMEKEY(F1)) + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2_PAD) PORT_CHAR(UCHAR_MAMEKEY(F2)) + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3_PAD) PORT_CHAR(UCHAR_MAMEKEY(F3)) + + PORT_START("keyboard_row_fd") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') + PORT_BIT(0x08, 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_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') PORT_CHAR('}') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4_PAD) PORT_CHAR(UCHAR_MAMEKEY(F4)) + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5_PAD) PORT_CHAR(UCHAR_MAMEKEY(F5)) + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6_PAD) PORT_CHAR(UCHAR_MAMEKEY(F6)) + + PORT_START("keyboard_row_fb") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') PORT_CHAR('<') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') PORT_CHAR('>') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') PORT_CHAR('[') + PORT_BIT(0x10, 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_7_PAD) PORT_CHAR(UCHAR_MAMEKEY(F7)) + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8_PAD) PORT_CHAR(UCHAR_MAMEKEY(F8)) + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9_PAD) PORT_CHAR(UCHAR_MAMEKEY(F9)) + + PORT_START("keyboard_row_f7") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TILDE) PORT_CHAR(UCHAR_MAMEKEY(ESC)) + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TAB) PORT_CHAR('\t') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) + + PORT_START("keyboard_row_ef") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR('~') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('/') + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('+') PORT_CHAR('*') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("DELETE") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) + + PORT_START("keyboard_row_df") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('=') PORT_CHAR('_') + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('"') PORT_CHAR('\xa9') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F0") PORT_CODE(KEYCODE_0_PAD) PORT_CHAR(UCHAR_MAMEKEY(F10)) + + PORT_START("keyboard_row_bf") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') PORT_CHAR('\xa3') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') PORT_CHAR('^') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(':') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("EDIT") PORT_CODE(KEYCODE_RALT) PORT_CHAR(UCHAR_MAMEKEY(INSERT)) + + PORT_START("keyboard_row_7f") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SYMBOL") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_SHIFT_2) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("INV") PORT_CODE(KEYCODE_SLASH) PORT_CHAR(UCHAR_MAMEKEY(HOME)) PORT_CHAR('\\') + + PORT_START("keyboard_row_ff") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LALT) PORT_CHAR(UCHAR_MAMEKEY(LALT)) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP)) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) + + PORT_START("mouse_buttons") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_CODE(MOUSECODE_BUTTON1) PORT_NAME("Mouse Button 1") + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_BUTTON3) PORT_CODE(MOUSECODE_BUTTON3) PORT_NAME("Mouse Button 3") + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_BUTTON2) PORT_CODE(MOUSECODE_BUTTON2) PORT_NAME("Mouse Button 2") + PORT_BIT(0xf8, IP_ACTIVE_LOW, IPT_UNUSED) + + PORT_START("mouse_x") + PORT_BIT(0xfff, 0x000, IPT_MOUSE_X) PORT_SENSITIVITY(50) PORT_KEYDELTA(0) PORT_REVERSE + + PORT_START("mouse_y") + PORT_BIT(0xfff, 0x000, IPT_MOUSE_Y) PORT_SENSITIVITY(50) PORT_KEYDELTA(0) + + PORT_START("config") + PORT_CONFNAME(0x01, 0x00, "Real Time Clock") + PORT_CONFSETTING( 0x00, DEF_STR(None)) + PORT_CONFSETTING( 0x01, "SAMBUS") +INPUT_PORTS_END + + +/*************************************************************************** + PALETTE +***************************************************************************/ + +/* + Decode colours for the palette as follows: + + bit 7 6 5 4 3 2 1 0 + nothing G+4 R+4 B+4 ALL+1 G+2 R+2 B+2 + +*/ +PALETTE_INIT_MEMBER(samcoupe_state, samcoupe) +{ + for (int i = 0; i < 128; i++) + { + UINT8 b = BIT(i, 0) * 2 + BIT(i, 4) * 4 + BIT(i, 3); + UINT8 r = BIT(i, 1) * 2 + BIT(i, 5) * 4 + BIT(i, 3); + UINT8 g = BIT(i, 2) * 2 + BIT(i, 6) * 4 + BIT(i, 3); + + r <<= 5; + g <<= 5; + b <<= 5; + + palette.set_pen_color(i, rgb_t(r, g, b)); + } + + palette.palette()->normalize_range(0, 127); +} + + +/*************************************************************************** + MACHINE DRIVERS +***************************************************************************/ + +FLOPPY_FORMATS_MEMBER( samcoupe_state::floppy_formats ) + FLOPPY_MGT_FORMAT +FLOPPY_FORMATS_END + +static SLOT_INTERFACE_START( samcoupe_floppies ) + SLOT_INTERFACE( "35dd", FLOPPY_35_DD ) +SLOT_INTERFACE_END + + +static MACHINE_CONFIG_START( samcoupe, samcoupe_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", Z80, SAMCOUPE_XTAL_X1 / 4) /* 6 MHz */ + MCFG_CPU_PROGRAM_MAP(samcoupe_mem) + MCFG_CPU_IO_MAP(samcoupe_io) + MCFG_CPU_VBLANK_INT_DRIVER("screen", samcoupe_state, samcoupe_frame_interrupt) + + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_RAW_PARAMS(SAMCOUPE_XTAL_X1/2, SAM_TOTAL_WIDTH, 0, SAM_BORDER_LEFT + SAM_SCREEN_WIDTH + SAM_BORDER_RIGHT, SAM_TOTAL_HEIGHT, 0, SAM_BORDER_TOP + SAM_SCREEN_HEIGHT + SAM_BORDER_BOTTOM) + MCFG_SCREEN_UPDATE_DRIVER(samcoupe_state, screen_update) + MCFG_SCREEN_PALETTE("palette") + + MCFG_PALETTE_ADD("palette", 128) + MCFG_PALETTE_INIT_OWNER(samcoupe_state, samcoupe) + + /* devices */ + MCFG_CENTRONICS_ADD("lpt1", centronics_devices, "printer") + MCFG_CENTRONICS_BUSY_HANDLER(WRITELINE(samcoupe_state, write_lpt1_busy)) + + MCFG_CENTRONICS_OUTPUT_LATCH_ADD("lpt1_data_out", "lpt1") + + MCFG_CENTRONICS_ADD("lpt2", centronics_devices, "printer") + MCFG_CENTRONICS_BUSY_HANDLER(WRITELINE(samcoupe_state, write_lpt2_busy)) + + MCFG_CENTRONICS_OUTPUT_LATCH_ADD("lpt2_data_out", "lpt2") + + MCFG_DEVICE_ADD("sambus_clock", MSM6242, XTAL_32_768kHz) + MCFG_CASSETTE_ADD("cassette") + MCFG_CASSETTE_FORMATS(tzx_cassette_formats) + MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_ENABLED) + MCFG_CASSETTE_INTERFACE("samcoupe_cass") + + MCFG_SOFTWARE_LIST_ADD("cass_list","samcoupe_cass") + + MCFG_WD1772_ADD("wd1772", SAMCOUPE_XTAL_X1/3) + MCFG_FLOPPY_DRIVE_ADD("wd1772:0", samcoupe_floppies, "35dd", samcoupe_state::floppy_formats) + MCFG_FLOPPY_DRIVE_ADD("wd1772:1", samcoupe_floppies, "35dd", samcoupe_state::floppy_formats) + MCFG_SOFTWARE_LIST_ADD("flop_list","samcoupe_flop") + + /* sound hardware */ + MCFG_SPEAKER_STANDARD_MONO("mono") + MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) + MCFG_SAA1099_ADD("saa1099", SAMCOUPE_XTAL_X1/3) /* 8 MHz */ + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) + + + /* internal ram */ + MCFG_RAM_ADD(RAM_TAG) + MCFG_RAM_DEFAULT_SIZE("512K") + MCFG_RAM_EXTRA_OPTIONS("256K,1280K,1536K,2304K,2560K,3328K,3584K,4352K,4608K") +MACHINE_CONFIG_END + + +/*************************************************************************** + ROM DEFINITIONS +***************************************************************************/ + +/* + The bios is actually 32K. This is the combined version of the two old 16K MESS roms. + It does match the 3.0 one the most, but the first half differs in one byte + and in the second half, the case of the "plc" in the company string differs. +*/ +ROM_START( samcoupe ) + ROM_REGION( 0x8000, "maincpu", 0 ) + ROM_SYSTEM_BIOS( 0, "31", "v3.1" ) + ROMX_LOAD( "rom31.z5", 0x0000, 0x8000, CRC(0b7e3585) SHA1(c86601633fb61a8c517f7657aad9af4e6870f2ee), ROM_BIOS(1) ) + ROM_SYSTEM_BIOS( 1, "30", "v3.0" ) + ROMX_LOAD( "rom30.z5", 0x0000, 0x8000, CRC(e535c25d) SHA1(d390f0be420dfb12b1e54a4f528b5055d7d97e2a), ROM_BIOS(2) ) + ROM_SYSTEM_BIOS( 2, "25", "v2.5" ) + ROMX_LOAD( "rom25.z5", 0x0000, 0x8000, CRC(ddadd358) SHA1(a25ed85a0f1134ac3a481a3225f24a8bd3a790cf), ROM_BIOS(3) ) + ROM_SYSTEM_BIOS( 3, "24", "v2.4" ) + ROMX_LOAD( "rom24.z5", 0x0000, 0x8000, CRC(bb23fee4) SHA1(10cd911ba237dd2cf0c2637be1ad6745b7cc89b9), ROM_BIOS(4) ) + ROM_SYSTEM_BIOS( 4, "21", "v2.1" ) + ROMX_LOAD( "rom21.z5", 0x0000, 0x8000, CRC(f6804b46) SHA1(11dcac5fdea782cdac03b4d0d7ac25d88547eefe), ROM_BIOS(5) ) + ROM_SYSTEM_BIOS( 5, "20", "v2.0" ) + ROMX_LOAD( "rom20.z5", 0x0000, 0x8000, CRC(eaf32054) SHA1(41736323f0236649f2d5fe111f900def8db93a13), ROM_BIOS(6) ) + ROM_SYSTEM_BIOS( 6, "181", "v1.81" ) + ROMX_LOAD( "rom181.z5", 0x0000, 0x8000, CRC(d25e1de1) SHA1(cb0fa79e4d5f7df0b57ede08ea7ecc9ae152f534), ROM_BIOS(7) ) + ROM_SYSTEM_BIOS( 7, "18", "v1.8" ) + ROMX_LOAD( "rom18.z5", 0x0000, 0x8000, CRC(f626063f) SHA1(485e7d9e9a4f8a70c0f93cd6e69ff12269438829), ROM_BIOS(8) ) + ROM_SYSTEM_BIOS( 8, "14", "v1.4" ) + ROMX_LOAD( "rom14.z5", 0x0000, 0x8000, CRC(08799596) SHA1(b4e596051f2748dee9481ea4af7d15ccddc1e1b5), ROM_BIOS(9) ) + ROM_SYSTEM_BIOS( 9, "13", "v1.3" ) + ROMX_LOAD( "rom13.z5", 0x0000, 0x8000, CRC(2093768c) SHA1(af8d348fd080b18a4cbe9ed69d254be7be330146), ROM_BIOS(10) ) + ROM_SYSTEM_BIOS( 10, "12", "v1.2" ) + ROMX_LOAD( "rom12.z5", 0x0000, 0x8000, CRC(7fe37dd8) SHA1(9339a0c1f72e8512c6f32dec15ab7d6c3bb04151), ROM_BIOS(11) ) + ROM_SYSTEM_BIOS( 11, "10", "v1.0" ) + ROMX_LOAD( "rom10.z5", 0x0000, 0x8000, CRC(3659d31f) SHA1(d3de7bb74e04d5b4dc7477f70de54d540b1bcc07), ROM_BIOS(12) ) + ROM_SYSTEM_BIOS( 12, "04", "v0.4" ) + ROMX_LOAD( "rom04.z5", 0x0000, 0x8000, CRC(f439e84e) SHA1(8bc457a5c764b0bb0aa7008c57f28c30248fc6a4), ROM_BIOS(13) ) + ROM_SYSTEM_BIOS( 13, "01", "v0.1" ) + ROMX_LOAD( "rom01.z5", 0x0000, 0x8000, CRC(c04acfdf) SHA1(8976ed005c14905eec1215f0a5c28aa686a7dda2), ROM_BIOS(14) ) +ROM_END + +/*************************************************************************** + GAME DRIVERS +***************************************************************************/ + +/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ +COMP( 1989, samcoupe, 0, 0, samcoupe, samcoupe, driver_device, 0, "Miles Gordon Technology plc", "SAM Coupe", 0 ) |