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-rw-r--r--src/mess/drivers/camplynx.c633
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diff --git a/src/mess/drivers/camplynx.c b/src/mess/drivers/camplynx.c
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-// license:BSD-3-Clause
-// copyright-holders:Robbbert
-/***************************************************************************
-
- 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.
-
- Notes:
- - The screen doesn't scroll. This is normal.
- - Variable names are case-sensitive.
- - Break key is the Escape key.
- - Typing a line number doesn't delete the line, you are in a calculator mode
- (for example, typing 67-5 will print 62)
- - DEL line-number deletes the line.
- - To edit a line, press Ctrl-E, it asks for line number, type it in,
- then arrows to move left-right, backspace to delete, press keys to insert them
- - If you entered a line and got a syntax error, press Ctrl-Q to edit it.
- - Cassette tapes made on 128k are a different speed to 48k tapes. To load a 128k
- tape on a 48k system, enter TAPE 3 before loading. (2,3,4,5 all seem to work).
- - When loading, there's no wildcard; you must specify the name.
-
- To Do:
- - finish memory banking
- - how is alt-green bank selected on 48k?
- - port 80 on 48k
- - 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"
-#include "imagedev/cassette.h"
-#include "sound/wave.h"
-#include "formats/camplynx_cas.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_palette(*this, "palette")
- , m_maincpu(*this, "maincpu")
- , m_cass(*this, "cassette")
- //, m_printer(*this, "centronics")
- , m_crtc(*this, "crtc")
- //, m_fdc(*this, "fdc")
- , m_dac(*this, "dac")
- { }
-
- // 48k
- DECLARE_READ8_MEMBER(port80_r); // cassin for 48k
- DECLARE_WRITE8_MEMBER(port80_w); // control port 48k
- DECLARE_WRITE8_MEMBER(port84_w); // dac port 48k
- DECLARE_WRITE8_MEMBER(lynx48k_bank_w); // banking 48k
- DECLARE_DRIVER_INIT(lynx48k);
- MC6845_UPDATE_ROW(lynx48k_update_row);
- // 128k
- DECLARE_WRITE8_MEMBER(lynx128k_port80_w); // control port 128k
- DECLARE_READ8_MEMBER(lynx128k_port82_r); // cassin for 128k
- DECLARE_WRITE8_MEMBER(lynx128k_port84_w); // dac port 128k
- DECLARE_WRITE8_MEMBER(lynx128k_bank_w); // banking 128k
- DECLARE_WRITE8_MEMBER(lynx128k_irq);
- DECLARE_MACHINE_RESET(lynx128k);
- MC6845_UPDATE_ROW(lynx128k_update_row);
- // common
- required_device<palette_device> m_palette;
-private:
- UINT8 m_port80;
- required_device<cpu_device> m_maincpu;
- required_device<cassette_image_device> m_cass;
- //required_device<> m_printer;
- required_device<mc6845_device> m_crtc;
- //optional_device<> m_fdc;
- required_device<dac_device> m_dac;
-};
-
-/* 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",m_maincpu->pc(), data);
-}
-
-WRITE8_MEMBER( camplynx_state::lynx128k_bank_w )
-{
- /* get address space */
- UINT8 *base = 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",m_maincpu->pc(), 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",m_maincpu->pc(), 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_WRITE(port80_w)
- AM_RANGE(0x0080,0x0080) AM_READ(port80_r)
- 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_WRITE(port84_w)
- 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
-
-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_WRITE(lynx128k_port80_w)
- 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_READWRITE(lynx128k_port82_r,lynx128k_bank_w) // read=serial buffer
- AM_RANGE(0x0084,0x0084) AM_MIRROR(0xff00) AM_WRITE(lynx128k_port84_w)
- 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_CHAR('c')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D DEL") PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHAR('d')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("X WEND") PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR('x')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E DATA") PORT_CODE(KEYCODE_E) PORT_CHAR('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_CHAR('a')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("S STOP") PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_CHAR('s')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Z RESTORE") PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR('z')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("W WHILE") PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_CHAR('w')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Q REM") PORT_CODE(KEYCODE_Q) PORT_CHAR('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_CHAR('f')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("G GOTO") PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_CHAR('g')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("V VERIFY") PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR('v')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("T TRACE") PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_CHAR('t')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("R REPEAT") PORT_CODE(KEYCODE_R) PORT_CHAR('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_CHAR('b')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("N NEXT") PORT_CODE(KEYCODE_N) PORT_CHAR('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_CHAR('h')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Y RUN") PORT_CODE(KEYCODE_Y) PORT_CHAR('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_CHAR('j')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("M RETURN") PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR('m')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("U UNTIL") PORT_CODE(KEYCODE_U) PORT_CHAR('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_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_CHAR('o')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("I INPUT") PORT_CODE(KEYCODE_I) PORT_CHAR('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_CHAR('l')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("P PROC") PORT_CODE(KEYCODE_P) PORT_CHAR('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_CHAR(0x5e)
- 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_CHAR(0x7f)
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Delete") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
-INPUT_PORTS_END
-
-READ8_MEMBER( camplynx_state::port80_r )
-{
- UINT8 data = ioport("LINE0")->read();
- // when reading tape, bit 0 becomes cass-in signal
- if BIT(m_port80, 1)
- {
- data &= 0xfe;
- data |= (m_cass->input() > +0.02) ? 0 : 1;
- }
- return data;
-}
-
-// during normal operation continually outputs E4,40,0
-// bit 1 is for the cassette motor. Other bits unknown.
-WRITE8_MEMBER( camplynx_state::port80_w )
-{
- m_port80 = data;
- m_cass->change_state( BIT(data, 1) ? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR);
-}
-
-/* DAC port. If writing cassette, output goes to tape as a sine wave, otherwise it goes to speaker.
- There is code below to write as a sine wave or a square wave, both work and can be loaded successfully.
- However the PALE emulator cannot load either of them, although it loads its own output.
- MESS can load PALE's wav files though.
- Currently square wave output is selected. */
-
-WRITE8_MEMBER( camplynx_state::port84_w )
-{
- if BIT(m_port80, 1)
- {
- // Sine wave output
- //float t = (float)(unsigned)data - 32.0f;
- //m_cass->output(t/31);
-
- // Square wave output
- m_cass->output(BIT(data, 5) ? -1.0 : +1.0);
- }
- else // speaker output
- m_dac->write_unsigned8(space, 0, data);
-}
-
-/*
-d7 = clock
-d2 = cass-in
-d1 = serial data in
-d0 = serial h/s in */
-READ8_MEMBER( camplynx_state::lynx128k_port82_r )
-{
- UINT8 data = 0xfb; // guess
- data |= (m_cass->input() > +0.02) ? 4 : 0;
- return data;
-}
-
-/*
-d7 = serial data out
-d6 = interline control
-d5 = cpu access
-d4 = alt green or normal green
-d3 = cass motor on
-d2 = cass enable
-d1 = serial h/s out
-d0 = speaker */
-WRITE8_MEMBER( camplynx_state::lynx128k_port80_w )
-{
- m_port80 = data;
- m_cass->change_state( BIT(data, 3) ? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR);
-}
-
-// DAC port (6-bit)
-WRITE8_MEMBER( camplynx_state::lynx128k_port84_w )
-{
- if BIT(m_port80, 3) // could be bit 2
- {
- // Square wave output
- m_cass->output(BIT(data, 5) ? -1.0 : +1.0);
- }
- else // speaker output
- m_dac->write_unsigned8(space, 0, data);
-}
-
-MACHINE_RESET_MEMBER(camplynx_state,lynx128k)
-{
- address_space &mem = m_maincpu->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");
-
- lynx128k_bank_w(mem, 0, 0);
-}
-
-WRITE8_MEMBER( camplynx_state::lynx128k_irq )
-{
- m_maincpu->set_input_line(0, data);
-}
-
-MC6845_UPDATE_ROW( camplynx_state::lynx48k_update_row )
-{
- UINT8 *RAM = machine().root_device().memregion("maincpu")->base();
- UINT8 r,g,b,x;
- UINT32 *p = &bitmap.pix32(y);
- UINT16 mem = ((ma << 2) + (ra << 5)) & 0x3fff;
-
- for (x = 0; x < x_count; x++)
- {
- r = RAM[0x14000+mem+x];
- g = RAM[0x1c000+mem+x];
- b = RAM[0x10000+mem+x];
-
- *p++ = m_palette->pen_color((BIT(b, 7) << 2) | (BIT(g, 7) << 1) | (BIT(r, 7)));
- *p++ = m_palette->pen_color((BIT(b, 6) << 2) | (BIT(g, 6) << 1) | (BIT(r, 6)));
- *p++ = m_palette->pen_color((BIT(b, 5) << 2) | (BIT(g, 5) << 1) | (BIT(r, 5)));
- *p++ = m_palette->pen_color((BIT(b, 4) << 2) | (BIT(g, 4) << 1) | (BIT(r, 4)));
- *p++ = m_palette->pen_color((BIT(b, 3) << 2) | (BIT(g, 3) << 1) | (BIT(r, 3)));
- *p++ = m_palette->pen_color((BIT(b, 2) << 2) | (BIT(g, 2) << 1) | (BIT(r, 2)));
- *p++ = m_palette->pen_color((BIT(b, 1) << 2) | (BIT(g, 1) << 1) | (BIT(r, 1)));
- *p++ = m_palette->pen_color((BIT(b, 0) << 2) | (BIT(g, 0) << 1) | (BIT(r, 0)));
- }
-}
-
-MC6845_UPDATE_ROW( camplynx_state::lynx128k_update_row )
-{
- UINT8 *RAM = machine().root_device().memregion("maincpu")->base();
- UINT8 r,g,b,x;
- UINT32 green_bank, *p = &bitmap.pix32(y);
- UINT16 mem = ((ma << 2) + (ra << 6)) & 0x3fff;
- // determine green bank
- if BIT(m_port80, 4)
- green_bank = 0x2c000+mem; // alt green
- else
- green_bank = 0x28000+mem; // normal green
-
- for (x = 0; x < x_count; x++)
- {
- r = RAM[0x20000+mem+x];
- b = RAM[0x24000+mem+x];
- g = RAM[green_bank+x];
-
- *p++ = m_palette->pen_color((BIT(b, 7) << 2) | (BIT(g, 7) << 1) | (BIT(r, 7)));
- *p++ = m_palette->pen_color((BIT(b, 6) << 2) | (BIT(g, 6) << 1) | (BIT(r, 6)));
- *p++ = m_palette->pen_color((BIT(b, 5) << 2) | (BIT(g, 5) << 1) | (BIT(r, 5)));
- *p++ = m_palette->pen_color((BIT(b, 4) << 2) | (BIT(g, 4) << 1) | (BIT(r, 4)));
- *p++ = m_palette->pen_color((BIT(b, 3) << 2) | (BIT(g, 3) << 1) | (BIT(r, 3)));
- *p++ = m_palette->pen_color((BIT(b, 2) << 2) | (BIT(g, 2) << 1) | (BIT(r, 2)));
- *p++ = m_palette->pen_color((BIT(b, 1) << 2) | (BIT(g, 1) << 1) | (BIT(r, 1)));
- *p++ = m_palette->pen_color((BIT(b, 0) << 2) | (BIT(g, 0) << 1) | (BIT(r, 0)));
- }
-}
-
-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_PALETTE_ADD_3BIT_RGB("palette")
-
- /* sound hardware */
- MCFG_SPEAKER_STANDARD_MONO("mono")
- MCFG_SOUND_ADD("dac", DAC, 0)
- MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.5)
- MCFG_SOUND_WAVE_ADD(WAVE_TAG, "cassette")
- MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
-
- /* devices */
- MCFG_MC6845_ADD("crtc", MC6845, "screen", XTAL_12MHz / 8 /*? dot clock divided by dots per char */)
- MCFG_MC6845_SHOW_BORDER_AREA(false)
- MCFG_MC6845_CHAR_WIDTH(8)
- MCFG_MC6845_UPDATE_ROW_CB(camplynx_state, lynx48k_update_row)
-
- MCFG_CASSETTE_ADD("cassette")
- MCFG_CASSETTE_FORMATS(lynx48k_cassette_formats)
- MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_PLAY | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_DISABLED)
- //MCFG_CASSETTE_INTERFACE("camplynx_cass")
-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_OVERRIDE(camplynx_state,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_PALETTE_ADD_3BIT_RGB("palette")
-
- /* sound hardware */
- MCFG_SPEAKER_STANDARD_MONO("mono")
- MCFG_SOUND_ADD("dac", DAC, 0)
- MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.5)
- MCFG_SOUND_WAVE_ADD(WAVE_TAG, "cassette")
- MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
-
- /* devices */
- MCFG_MC6845_ADD("crtc", MC6845, "screen", XTAL_12MHz / 8 /*? dot clock divided by dots per char */)
- MCFG_MC6845_SHOW_BORDER_AREA(false)
- MCFG_MC6845_CHAR_WIDTH(8)
- MCFG_MC6845_UPDATE_ROW_CB(camplynx_state, lynx128k_update_row)
- MCFG_MC6845_OUT_HSYNC_CB(WRITE8(camplynx_state, lynx128k_irq))
-
- MCFG_CASSETTE_ADD("cassette")
- MCFG_CASSETTE_FORMATS(lynx128k_cassette_formats)
- MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_PLAY | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_DISABLED)
- //MCFG_CASSETTE_INTERFACE("camplynx_cass")
-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", MACHINE_NOT_WORKING)
-COMP( 1983, lynx96k, lynx48k, 0, lynx48k, lynx48k, camplynx_state, lynx48k, "Camputers", "Lynx 96k", MACHINE_NOT_WORKING)
-COMP( 1983, lynx128k, lynx48k, 0, lynx128k, lynx48k, driver_device, 0, "Camputers", "Lynx 128k", MACHINE_NOT_WORKING)