diff options
Diffstat (limited to 'src/mess/drivers/camplynx.c')
-rw-r--r-- | src/mess/drivers/camplynx.c | 555 |
1 files changed, 555 insertions, 0 deletions
diff --git a/src/mess/drivers/camplynx.c b/src/mess/drivers/camplynx.c new file mode 100644 index 00000000000..f7ab5b8241f --- /dev/null +++ b/src/mess/drivers/camplynx.c @@ -0,0 +1,555 @@ +/*************************************************************************** + + Camputers Lynx + + 05/2009 Skeleton driver. + + The Lynx was an 8-bit British home computer that was first released + in early 1983 as a 48 kB model. + The designer of the Lynx was John Shireff and several models were + available with 48 kB, 96 kB (from Sep 1983) or 128 kB RAM (from Dec + 1983). It was possible reach 192 kB with RAM expansions on-board. + + The machine was based around a Z80A CPU clocked at 4 MHz, and featured + a Motorola 6845 as video controller. It was possible to run CP/M with + the optional 5.25" floppy disk-drive on the 96 kB and 128 kB models. + Approximately 30,000 Lynx units were sold world-wide. + + Camputers ceased trading in June 1984. Anston Technology took over in + November the same year and a re-launch was planned but never happened. + + In June 1986, Anston sold everything - hardware, design rights and + thousands of cassettes - to the National Lynx User Group. The group + planned to produce a Super-Lynx but was too busy supplying spares and + technical information to owners of existing models, and the project never + came into being. + + Hardware info: + - CPU: Zilog Z80A 4 MHz + - CO-PROCESSOR: Motorola 6845 (CRT controller) + - RAM: 48 kb, 96 kb or 128 kb depending on models (max. 192 kb) + - ROM: 16 kb (48K version), 24 KB (96K and 128K versions) + - TEXT MODES: 40 x 24, 80 x 24 + - GRAPHIC MODES: 256 x 248, 512 x 480 + - SOUND: one voice beeper + + Lynx 128 Memory Map + + | 0000 2000 4000 6000 8000 a000 c000 e000 + | 1fff 3fff 5fff 7fff 9fff bfff dfff ffff + ------------------------------------------------------------------------- + | | | | + Bank 0 | BASIC ROM | Not Available | Ext | Ext + | | | ROM1 | ROM2 + ------------------------------------------------------------------------- + | | + Bank 1 | STORE | Workspace RAM + | | + ------------------------------------------------------------------------- + | | | | + Bank 2 | RED | BLUE | GREEN | Alt + | | | | Green + ------------------------------------------------------------------------- + | + Bank 3 | Available for Video Expansion + | + ------------------------------------------------------------------------- + | + Bank 4 | Available for User RAM Expansion + | + + + + 48k and 96k are basically the same machine. 128k is different. + + The work so far is without the benefit of manuals, schematic etc [Robbbert] + + 48k, 96k: + Cassette operation is strange indeed. Save takes the dac output and directs + it to the tape. Load takes over line 0 of the keyboard and uses bits 0 and 5. + + To Do: + - find Break key + - banking (it is incomplete atm) + - devices (cassette, disk, printer, joysticks) + - find out the mc6845 clock frequency + +****************************************************************************/ + +#include "emu.h" +#include "cpu/z80/z80.h" +#include "video/mc6845.h" +#include "sound/dac.h" + +class camplynx_state : public driver_device +{ +public: + camplynx_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag), + m_maincpu(*this, "maincpu"), + //m_cass(*this, CASSETTE_TAG), + //m_wave(*this, WAVE_TAG), + //m_printer(*this, "centronics"), + m_crtc(*this, "crtc") + //m_fdc(*this, "fdc") + { } + + required_device<cpu_device> m_maincpu; + //required_device<cassette_image_device> m_cass; + //required_device<device_t> m_wave; + //required_device<device_t> m_printer; + required_device<mc6845_device> m_crtc; + //optional_device<device_t> m_fdc; + DECLARE_WRITE8_MEMBER(lynx48k_bank_w); + DECLARE_WRITE8_MEMBER(lynx128k_bank_w); + DECLARE_WRITE8_MEMBER(lynx128k_irq); + DECLARE_DRIVER_INIT(lynx48k); +}; + +/* These bankswitch handlers are very incomplete, just enough to get the + computer working. Also, as it happens 6 times for every scanline + of every character, it causes a huge slowdown. */ + +WRITE8_MEMBER( camplynx_state::lynx48k_bank_w ) +{ + if (!data) + membank("bank1")->set_entry(0); + else + if (data & 2) + membank("bank1")->set_entry(1); + else + if (data & 4) + membank("bank1")->set_entry(2); + else + logerror("%04X: Cannot understand bankswitch command %X\n",cpu_get_pc(m_maincpu), data); +} + +WRITE8_MEMBER( camplynx_state::lynx128k_bank_w ) +{ + /* get address space */ + address_space *mem = m_maincpu->memory().space(AS_PROGRAM); + UINT8 *base = mem->machine().root_device().memregion("maincpu")->base(); + + /* Set read banks */ + UINT8 bank = data & 0x0f; + + if (!bank) + { + membank("bank1")->set_base(base + 0x00000); + membank("bank2")->set_base(base + 0x02000); + membank("bank3")->set_base(base + 0x04000); + membank("bank4")->set_base(base + 0x16000); + membank("bank5")->set_base(base + 0x18000); + membank("bank6")->set_base(base + 0x1a000); + membank("bank7")->set_base(base + 0x0c000); + membank("bank8")->set_base(base + 0x0e000); + } + else + if (bank == 0x0e) + { + membank("bank1")->set_base(base + 0x20000); + membank("bank2")->set_base(base + 0x22000); + membank("bank3")->set_base(base + 0x24000); + membank("bank4")->set_base(base + 0x26000); + membank("bank5")->set_base(base + 0x28000); + membank("bank6")->set_base(base + 0x2a000); + membank("bank7")->set_base(base + 0x2c000); + membank("bank8")->set_base(base + 0x2e000); + } + else + logerror("%04X: Cannot understand bankswitch command %X\n",cpu_get_pc(m_maincpu), data); + + /* Set write banks */ + bank = data & 0xd0; + + if (!bank) + { + membank("bank11")->set_base(base + 0x10000); + membank("bank12")->set_base(base + 0x12000); + membank("bank13")->set_base(base + 0x14000); + membank("bank14")->set_base(base + 0x16000); + membank("bank15")->set_base(base + 0x18000); + membank("bank16")->set_base(base + 0x1a000); + membank("bank17")->set_base(base + 0x1c000); + membank("bank18")->set_base(base + 0x1e000); + } + else + if (bank == 0xc0) + { + membank("bank11")->set_base(base + 0x20000); + membank("bank12")->set_base(base + 0x22000); + membank("bank13")->set_base(base + 0x24000); + membank("bank14")->set_base(base + 0x26000); + membank("bank15")->set_base(base + 0x28000); + membank("bank16")->set_base(base + 0x2a000); + membank("bank17")->set_base(base + 0x2c000); + membank("bank18")->set_base(base + 0x2e000); + } + else + logerror("%04X: Cannot understand bankswitch command %X\n",cpu_get_pc(m_maincpu), data); +} + +static ADDRESS_MAP_START( lynx48k_mem, AS_PROGRAM, 8, camplynx_state ) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE(0x0000,0x5fff) AM_ROM + AM_RANGE(0x6000,0x7fff) AM_RAM + AM_RANGE(0x8000,0xffff) AM_RAMBANK("bank1") +ADDRESS_MAP_END + +static ADDRESS_MAP_START( lynx128k_mem, AS_PROGRAM, 8, camplynx_state ) +ADDRESS_MAP_END + +static ADDRESS_MAP_START( lynx48k_io , AS_IO, 8, camplynx_state ) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE(0x007f,0x007f) AM_MIRROR(0xff00) AM_WRITE(lynx48k_bank_w) + AM_RANGE(0x0080,0x0080) AM_MIRROR(0xff00) AM_WRITENOP /* to be emulated */ + AM_RANGE(0x0080,0x0080) AM_READ_PORT("LINE0") + AM_RANGE(0x0180,0x0180) AM_READ_PORT("LINE1") + AM_RANGE(0x0280,0x0280) AM_READ_PORT("LINE2") + AM_RANGE(0x0380,0x0380) AM_READ_PORT("LINE3") + AM_RANGE(0x0480,0x0480) AM_READ_PORT("LINE4") + AM_RANGE(0x0580,0x0580) AM_READ_PORT("LINE5") + AM_RANGE(0x0680,0x0680) AM_READ_PORT("LINE6") + AM_RANGE(0x0780,0x0780) AM_READ_PORT("LINE7") + AM_RANGE(0x0880,0x0880) AM_READ_PORT("LINE8") + AM_RANGE(0x0980,0x0980) AM_READ_PORT("LINE9") + AM_RANGE(0x0084,0x0084) AM_MIRROR(0xff00) AM_DEVWRITE("dac", dac_device, write_unsigned8) /* 6-bit dac */ + AM_RANGE(0x0086,0x0086) AM_MIRROR(0xff00) AM_DEVWRITE("crtc", mc6845_device, address_w) + AM_RANGE(0x0087,0x0087) AM_MIRROR(0xff00) AM_DEVREADWRITE("crtc", mc6845_device, register_r, register_w) +ADDRESS_MAP_END + +static ADDRESS_MAP_START( lynx128k_io , AS_IO, 8, camplynx_state ) + ADDRESS_MAP_UNMAP_HIGH +// AM_RANGE(0x0050,0x0053) AM_MIRROR(0xff80) AM_READ(wd179x_r) // uses a 1793 +// AM_RANGE(0x0054,0x0057) AM_MIRROR(0xff80) AM_WRITE(wd179x_w) +// AM_RANGE(0x0058,0x0058) AM_MIRROR(0xff80) AM_WRITE(lynx128k_disk_w) +// AM_RANGE(0x007a,0x007b) AM_MIRROR(0xff80) AM_READ(lynx128k_joysticks_r) +// AM_RANGE(0x007c,0x007c) AM_MIRROR(0xff80) AM_READ(lynx128k_printer_r) +// AM_RANGE(0x007d,0x007d) AM_MIRROR(0xff80) AM_WRITE(lynx128k_printer_init_w) // this is rw +// AM_RANGE(0x007e,0x007e) AM_MIRROR(0xff80) AM_WRITE(lynx128k_printer_w) + AM_RANGE(0x0080,0x0080) AM_MIRROR(0xff00) AM_WRITENOP /* to be emulated */ + AM_RANGE(0x0080,0x0080) AM_READ_PORT("LINE0") + AM_RANGE(0x0180,0x0180) AM_READ_PORT("LINE1") + AM_RANGE(0x0280,0x0280) AM_READ_PORT("LINE2") + AM_RANGE(0x0380,0x0380) AM_READ_PORT("LINE3") + AM_RANGE(0x0480,0x0480) AM_READ_PORT("LINE4") + AM_RANGE(0x0580,0x0580) AM_READ_PORT("LINE5") + AM_RANGE(0x0680,0x0680) AM_READ_PORT("LINE6") + AM_RANGE(0x0780,0x0780) AM_READ_PORT("LINE7") + AM_RANGE(0x0880,0x0880) AM_READ_PORT("LINE8") + AM_RANGE(0x0980,0x0980) AM_READ_PORT("LINE9") + AM_RANGE(0x0082,0x0082) AM_MIRROR(0xff00) AM_WRITE(lynx128k_bank_w) // read=serial buffer + AM_RANGE(0x0084,0x0084) AM_MIRROR(0xff00) AM_DEVWRITE("dac", dac_device, write_unsigned8) /* 6-bit dac. Read="single-step", causes a NMI */ + AM_RANGE(0x0086,0x0086) AM_MIRROR(0xff00) AM_DEVREADWRITE("crtc", mc6845_device, status_r, address_w) + AM_RANGE(0x0087,0x0087) AM_MIRROR(0xff00) AM_DEVREADWRITE("crtc", mc6845_device, register_r, register_w) +ADDRESS_MAP_END + +/* Input ports */ +static INPUT_PORTS_START( lynx48k ) + PORT_START("LINE0") + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Shift") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Esc") PORT_CODE(KEYCODE_ESC) PORT_CHAR(27) + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Down") PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Up") PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP)) + PORT_BIT(0x0e, IP_ACTIVE_LOW, IPT_UNUSED) + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1 !") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') + PORT_START("LINE1") + PORT_BIT(0xc0, IP_ACTIVE_LOW, IPT_UNUSED) + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C CONT") PORT_CODE(KEYCODE_C) PORT_CHAR('C') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D DEL") PORT_CODE(KEYCODE_D) PORT_CHAR('D') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("X WEND") PORT_CODE(KEYCODE_X) PORT_CHAR('X') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E DATA") PORT_CODE(KEYCODE_E) PORT_CHAR('E') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4 $") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3 #") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') + PORT_START("LINE2") + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED) + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Control") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_SHIFT_2) + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A AUTO") PORT_CODE(KEYCODE_A) PORT_CHAR('A') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("S STOP") PORT_CODE(KEYCODE_S) PORT_CHAR('S') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Z RESTORE") PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("W WHILE") PORT_CODE(KEYCODE_W) PORT_CHAR('W') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Q REM") PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2 \"") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR(34) + PORT_START("LINE3") + PORT_BIT(0xc0, IP_ACTIVE_LOW, IPT_UNUSED) + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F DEFPROC") PORT_CODE(KEYCODE_F) PORT_CHAR('F') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("G GOTO") PORT_CODE(KEYCODE_G) PORT_CHAR('G') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("V VERIFY") PORT_CODE(KEYCODE_V) PORT_CHAR('V') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("T TRACE") PORT_CODE(KEYCODE_T) PORT_CHAR('T') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("R REPEAT") PORT_CODE(KEYCODE_R) PORT_CHAR('R') + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5 %") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') + PORT_START("LINE4") + PORT_BIT(0xc0, IP_ACTIVE_LOW, IPT_UNUSED) + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B BEEP") PORT_CODE(KEYCODE_B) PORT_CHAR('B') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("N NEXT") PORT_CODE(KEYCODE_N) PORT_CHAR('N') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Space") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(32) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("H GOSUB") PORT_CODE(KEYCODE_H) PORT_CHAR('H') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Y RUN") PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6 &") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&') + PORT_START("LINE5") + PORT_BIT(0xd0, IP_ACTIVE_LOW, IPT_UNUSED) + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("J LABEL") PORT_CODE(KEYCODE_J) PORT_CHAR('J') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("M RETURN") PORT_CODE(KEYCODE_M) PORT_CHAR('M') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("U UNTIL") PORT_CODE(KEYCODE_U) PORT_CHAR('U') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8 (") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(') + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7 \'") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR(39) + PORT_START("LINE6") + PORT_BIT(0xd0, IP_ACTIVE_LOW, IPT_UNUSED) + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("K MON") PORT_CODE(KEYCODE_K) PORT_CHAR('K') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(", <") PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("O ENDPROC") PORT_CODE(KEYCODE_O) PORT_CHAR('O') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("I INPUT") PORT_CODE(KEYCODE_I) PORT_CHAR('I') + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9 )") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')') + PORT_START("LINE7") + PORT_BIT(0xd0, IP_ACTIVE_LOW, IPT_UNUSED) + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("; +") PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR('+') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(". >") PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("L LIST") PORT_CODE(KEYCODE_L) PORT_CHAR('L') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("P PROC") PORT_CODE(KEYCODE_P) PORT_CHAR('P') + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0 _") PORT_CODE(KEYCODE_0) PORT_CHAR('0') + PORT_START("LINE8") + PORT_BIT(0xd0, IP_ACTIVE_LOW, IPT_UNUSED) + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(": *") PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(':') PORT_CHAR('*') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("/ ?") PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("[") PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("@ \\") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('@') PORT_CHAR('\\') + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("- =") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=') + PORT_START("LINE9") + PORT_BIT(0xc0, IP_ACTIVE_LOW, IPT_UNUSED) + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Right") PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("End") PORT_CODE(KEYCODE_END) PORT_CHAR(UCHAR_MAMEKEY(END)) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Left") PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("]") PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Delete") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) +INPUT_PORTS_END + + +static MACHINE_RESET( lynx128k ) +{ + camplynx_state *state = machine.driver_data<camplynx_state>(); + address_space *mem = state->m_maincpu->memory().space(AS_PROGRAM); + mem->install_read_bank (0x0000, 0x1fff, "bank1"); + mem->install_read_bank (0x2000, 0x3fff, "bank2"); + mem->install_read_bank (0x4000, 0x5fff, "bank3"); + mem->install_read_bank (0x6000, 0x7fff, "bank4"); + mem->install_read_bank (0x8000, 0x9fff, "bank5"); + mem->install_read_bank (0xa000, 0xbfff, "bank6"); + mem->install_read_bank (0xc000, 0xdfff, "bank7"); + mem->install_read_bank (0xe000, 0xffff, "bank8"); + mem->install_write_bank (0x0000, 0x1fff, "bank11"); + mem->install_write_bank (0x2000, 0x3fff, "bank12"); + mem->install_write_bank (0x4000, 0x5fff, "bank13"); + mem->install_write_bank (0x6000, 0x7fff, "bank14"); + mem->install_write_bank (0x8000, 0x9fff, "bank15"); + mem->install_write_bank (0xa000, 0xbfff, "bank16"); + mem->install_write_bank (0xc000, 0xdfff, "bank17"); + mem->install_write_bank (0xe000, 0xffff, "bank18"); + + state->lynx128k_bank_w(*mem, 0, 0); +} + +WRITE8_MEMBER( camplynx_state::lynx128k_irq ) +{ + cputag_set_input_line(machine(), "maincpu", 0, data); +} + + +static const UINT8 lynx48k_palette[8*3] = +{ + 0x00, 0x00, 0x00, /* 0 Black */ + 0x00, 0x00, 0xff, /* 1 Blue */ + 0xff, 0x00, 0x00, /* 2 Red */ + 0xff, 0x00, 0xff, /* 3 Magenta */ + 0x00, 0xff, 0x00, /* 4 Green */ + 0x00, 0xff, 0xff, /* 5 Cyan */ + 0xff, 0xff, 0x00, /* 6 Yellow */ + 0xff, 0xff, 0xff, /* 7 White */ +}; + +static PALETTE_INIT( lynx48k ) +{ + UINT8 r, b, g, i=0, color_count = 8; + + while (color_count--) + { + r = lynx48k_palette[i++]; g = lynx48k_palette[i++]; b = lynx48k_palette[i++]; + palette_set_color(machine, 7-color_count, MAKE_RGB(r, g, b)); + } +} + +static MC6845_UPDATE_ROW( lynx48k_update_row ) +{ + UINT8 *RAM = device->machine().root_device().memregion("maincpu")->base(); + const rgb_t *palette = palette_entry_list_raw(bitmap.palette()); + UINT8 r,g,b; + UINT32 x, *p = &bitmap.pix32(y); + + for (x = (y << 5); x < x_count + (y << 5); x++) + { + r = RAM[0x14000+x]; + g = RAM[0x1c000+x]; + b = RAM[0x10000+x]; + + *p++ = palette[(BIT(r, 7) << 1) | (BIT(g, 7) << 2) | (BIT(b, 7))]; + *p++ = palette[(BIT(r, 6) << 1) | (BIT(g, 6) << 2) | (BIT(b, 6))]; + *p++ = palette[(BIT(r, 5) << 1) | (BIT(g, 5) << 2) | (BIT(b, 5))]; + *p++ = palette[(BIT(r, 4) << 1) | (BIT(g, 4) << 2) | (BIT(b, 4))]; + *p++ = palette[(BIT(r, 3) << 1) | (BIT(g, 3) << 2) | (BIT(b, 3))]; + *p++ = palette[(BIT(r, 2) << 1) | (BIT(g, 2) << 2) | (BIT(b, 2))]; + *p++ = palette[(BIT(r, 1) << 1) | (BIT(g, 1) << 2) | (BIT(b, 1))]; + *p++ = palette[(BIT(r, 0) << 1) | (BIT(g, 0) << 2) | (BIT(b, 0))]; + } +} + +static MC6845_UPDATE_ROW( lynx128k_update_row ) +{ + UINT8 *RAM = device->machine().root_device().memregion("maincpu")->base(); + const rgb_t *palette = palette_entry_list_raw(bitmap.palette()); + UINT8 r,g,b; + UINT32 x, *p = &bitmap.pix32(y); + + for (x = (y << 6); x < x_count + (y << 6); x++) + { + r = RAM[0x20100+x]; + g = RAM[0x28100+x]; + b = RAM[0x24100+x]; + + *p++ = palette[(BIT(r, 7) << 1) | (BIT(g, 7) << 2) | (BIT(b, 7))]; + *p++ = palette[(BIT(r, 6) << 1) | (BIT(g, 6) << 2) | (BIT(b, 6))]; + *p++ = palette[(BIT(r, 5) << 1) | (BIT(g, 5) << 2) | (BIT(b, 5))]; + *p++ = palette[(BIT(r, 4) << 1) | (BIT(g, 4) << 2) | (BIT(b, 4))]; + *p++ = palette[(BIT(r, 3) << 1) | (BIT(g, 3) << 2) | (BIT(b, 3))]; + *p++ = palette[(BIT(r, 2) << 1) | (BIT(g, 2) << 2) | (BIT(b, 2))]; + *p++ = palette[(BIT(r, 1) << 1) | (BIT(g, 1) << 2) | (BIT(b, 1))]; + *p++ = palette[(BIT(r, 0) << 1) | (BIT(g, 0) << 2) | (BIT(b, 0))]; + } +} + +static VIDEO_START( lynx48k ) +{ +} + +static const mc6845_interface lynx48k_crtc6845_interface = { + "screen", + 8, + NULL, + lynx48k_update_row, + NULL, + DEVCB_NULL, + DEVCB_NULL, + DEVCB_NULL, + DEVCB_NULL, + NULL +}; + +static const mc6845_interface lynx128k_crtc6845_interface = { + "screen", /* screen name */ + 8, /* dots per character */ + NULL, + lynx128k_update_row, /* callback to display one scanline */ + NULL, + DEVCB_NULL, + DEVCB_NULL, + DEVCB_DRIVER_MEMBER(camplynx_state, lynx128k_irq), /* callback when cursor pin changes state */ + DEVCB_NULL, + NULL +}; + + +static MACHINE_CONFIG_START( lynx48k, camplynx_state ) + + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", Z80, XTAL_4MHz) + MCFG_CPU_PROGRAM_MAP(lynx48k_mem) + MCFG_CPU_IO_MAP(lynx48k_io) + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_REFRESH_RATE(50) + MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ + MCFG_SCREEN_SIZE(512, 480) + MCFG_SCREEN_VISIBLE_AREA(0, 511, 0, 479) + MCFG_SCREEN_UPDATE_DEVICE("crtc", mc6845_device, screen_update) + MCFG_VIDEO_START(lynx48k) + MCFG_PALETTE_LENGTH(8) + MCFG_PALETTE_INIT(lynx48k) + + /* sound hardware */ + MCFG_SPEAKER_STANDARD_MONO("mono") + MCFG_SOUND_ADD("dac", DAC, 0) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.8) + + /* Devices */ + MCFG_MC6845_ADD("crtc", MC6845, XTAL_12MHz / 8 /*? dot clock divided by dots per char */, lynx48k_crtc6845_interface) +MACHINE_CONFIG_END + +static MACHINE_CONFIG_START( lynx128k, camplynx_state ) + + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", Z80, XTAL_6MHz) + MCFG_CPU_PROGRAM_MAP(lynx128k_mem) + MCFG_CPU_IO_MAP(lynx128k_io) + + MCFG_MACHINE_RESET(lynx128k) + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_REFRESH_RATE(50) + MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ + MCFG_SCREEN_SIZE(512, 480) + MCFG_SCREEN_VISIBLE_AREA(0, 511, 0, 479) + MCFG_SCREEN_UPDATE_DEVICE("crtc", mc6845_device, screen_update) + MCFG_VIDEO_START(lynx48k) + MCFG_PALETTE_LENGTH(8) + MCFG_PALETTE_INIT(lynx48k) + + /* sound hardware */ + MCFG_SPEAKER_STANDARD_MONO("mono") + MCFG_SOUND_ADD("dac", DAC, 0) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.8) + + /* Devices */ + MCFG_MC6845_ADD("crtc", MC6845, XTAL_12MHz / 8 /*? dot clock divided by dots per char */, lynx128k_crtc6845_interface) +MACHINE_CONFIG_END + +DRIVER_INIT_MEMBER(camplynx_state,lynx48k) +{ + UINT8 *RAM = memregion("maincpu")->base(); + membank("bank1")->configure_entries(0, 3, &RAM[0x8000], 0x8000); +} + + +/* ROM definition */ +ROM_START( lynx48k ) + ROM_REGION( 0x20000, "maincpu", ROMREGION_ERASEFF ) + ROM_SYSTEM_BIOS(0, "1", "Set1") + ROMX_LOAD( "lynx48-1.rom", 0x0000, 0x2000, CRC(56feec44) SHA1(7ded5184561168e159a30fa8e9d3fde5e52aa91a), ROM_BIOS(1) ) + ROMX_LOAD( "lynx48-2.rom", 0x2000, 0x2000, CRC(d894562e) SHA1(c08a78ecb4eb05baa4c52488fce3648cd2688744), ROM_BIOS(1) ) + ROM_SYSTEM_BIOS(1, "2", "Set2") + ROMX_LOAD( "lynx4811.rom", 0x0000, 0x2000, CRC(a933e577) SHA1(c7b30a28d99b38dbe63a1314c78e3e614287143b), ROM_BIOS(2) ) + ROMX_LOAD( "lynx4812.rom", 0x2000, 0x2000, CRC(3d3fdd0e) SHA1(259d124f05367a96f891790f9418cc9c7798e2f8), ROM_BIOS(2) ) +ROM_END + +ROM_START( lynx96k ) + ROM_REGION( 0x20000, "maincpu", ROMREGION_ERASEFF ) + ROM_LOAD( "lynx9646.rom", 0x0000, 0x2000, CRC(f86c5514) SHA1(77a4af7557382003d697d08f364839e2dc28f063) ) + ROM_LOAD( "lynx9645.rom", 0x2000, 0x2000, CRC(f596b9a3) SHA1(3fca46bd68422d34c6cd801dd904507e52bd8846) ) + ROM_LOAD( "lynx9644.rom", 0x4000, 0x1000, CRC(4b96b0de) SHA1(c372a8d26399b9b45e615b674d61ccda76491b8b) ) + ROM_LOAD( "dosrom.rom", 0xe000, 0x2000, CRC(011e106a) SHA1(e77f0ca99790551a7122945f3194516b2390fb69) ) +ROM_END + +ROM_START( lynx128k ) + ROM_REGION( 0x50000, "maincpu", ROMREGION_ERASEFF ) + ROM_LOAD( "lynx128-1.rom", 0x0000, 0x2000, CRC(65d292ce) SHA1(36567c2fbd9cf72f758e8cb80c21cb4d82040752) ) + ROM_LOAD( "lynx128-2.rom", 0x2000, 0x2000, CRC(23288773) SHA1(e12a7ebea3fae5eb375c03e848dbb81070d9d189) ) + ROM_LOAD( "lynx128-3.rom", 0x4000, 0x2000, CRC(9827b9e9) SHA1(1092367b2af51c72ce9be367179240d692aeb131) ) + ROM_LOAD( "dosrom.rom", 0xe000, 0x2000, CRC(011e106a) SHA1(e77f0ca99790551a7122945f3194516b2390fb69) ) +ROM_END + + +/* Driver */ +/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ +COMP( 1983, lynx48k, 0, 0, lynx48k, lynx48k, camplynx_state, lynx48k, "Camputers", "Lynx 48k", GAME_NOT_WORKING) +COMP( 1983, lynx96k, lynx48k, 0, lynx48k, lynx48k, camplynx_state, lynx48k, "Camputers", "Lynx 96k", GAME_NOT_WORKING) +COMP( 1983, lynx128k, lynx48k, 0, lynx128k, lynx48k, driver_device, 0, "Camputers", "Lynx 128k", GAME_NOT_WORKING) |