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-rw-r--r--src/mame/drivers/tk2000.c608
1 files changed, 608 insertions, 0 deletions
diff --git a/src/mame/drivers/tk2000.c b/src/mame/drivers/tk2000.c
new file mode 100644
index 00000000000..6a5cd4a276c
--- /dev/null
+++ b/src/mame/drivers/tk2000.c
@@ -0,0 +1,608 @@
+// license:BSD-3-Clause
+// copyright-holders:R. Belmont
+/***************************************************************************
+
+ tk2000.c - Microdigital TK2000
+
+ Driver by R. Belmont
+
+ This system is only vaguely Apple II compatible.
+ The keyboard works entirely differently, which is a big deal.
+
+ $C05A - banks RAM from c100-ffff
+ $C05B - banks ROM from c100-ffff
+
+************************************************************************/
+
+#include "emu.h"
+#include "machine/bankdev.h"
+#include "machine/ram.h"
+#include "sound/speaker.h"
+#include "imagedev/flopdrv.h"
+#include "imagedev/cassette.h"
+#include "formats/ap2_dsk.h"
+#include "cpu/m6502/m6502.h"
+#include "video/apple2.h"
+
+#define A2_CPU_TAG "maincpu"
+#define A2_BUS_TAG "a2bus"
+#define A2_SPEAKER_TAG "speaker"
+#define A2_CASSETTE_TAG "tape"
+#define A2_UPPERBANK_TAG "inhbank"
+#define A2_VIDEO_TAG "a2video"
+
+class tk2000_state : public driver_device
+{
+public:
+ tk2000_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag),
+ m_maincpu(*this, A2_CPU_TAG),
+ m_ram(*this, RAM_TAG),
+ m_video(*this, A2_VIDEO_TAG),
+ m_row0(*this, "ROW0"),
+ m_row1(*this, "ROW1"),
+ m_row2(*this, "ROW2"),
+ m_row3(*this, "ROW3"),
+ m_row4(*this, "ROW4"),
+ m_row5(*this, "ROW5"),
+ m_row6(*this, "ROW6"),
+ m_row7(*this, "ROW7"),
+ m_kbspecial(*this, "keyb_special"),
+ m_sysconfig(*this, "a2_config"),
+ m_speaker(*this, A2_SPEAKER_TAG),
+ m_cassette(*this, A2_CASSETTE_TAG),
+ m_upperbank(*this, A2_UPPERBANK_TAG)
+ { }
+
+ required_device<cpu_device> m_maincpu;
+ required_device<ram_device> m_ram;
+ required_device<a2_video_device> m_video;
+ required_ioport m_row0, m_row1, m_row2, m_row3, m_row4, m_row5, m_row6, m_row7;
+ required_ioport m_kbspecial;
+ required_ioport m_sysconfig;
+ required_device<speaker_sound_device> m_speaker;
+ required_device<cassette_image_device> m_cassette;
+ required_device<address_map_bank_device> m_upperbank;
+
+ TIMER_DEVICE_CALLBACK_MEMBER(apple2_interrupt);
+
+ virtual void machine_start();
+ virtual void machine_reset();
+
+ DECLARE_PALETTE_INIT(tk2000);
+ UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+
+ DECLARE_READ8_MEMBER(ram_r);
+ DECLARE_WRITE8_MEMBER(ram_w);
+ DECLARE_READ8_MEMBER(c000_r);
+ DECLARE_WRITE8_MEMBER(c000_w);
+ DECLARE_READ8_MEMBER(c080_r);
+ DECLARE_WRITE8_MEMBER(c080_w);
+ DECLARE_READ8_MEMBER(c100_r);
+ DECLARE_WRITE8_MEMBER(c100_w);
+
+private:
+ int m_speaker_state;
+ int m_cassette_state;
+
+ UINT8 m_strobe;
+
+ bool m_page2;
+
+ UINT8 *m_ram_ptr;
+ int m_ram_size;
+
+ void do_io(address_space &space, int offset);
+ UINT8 read_floatingbus();
+};
+
+/***************************************************************************
+ START/RESET
+***************************************************************************/
+
+void tk2000_state::machine_start()
+{
+ m_ram_ptr = m_ram->pointer();
+ m_ram_size = m_ram->size();
+ m_speaker_state = 0;
+ m_speaker->level_w(m_speaker_state);
+ m_cassette_state = 0;
+ m_cassette->output(-1.0f);
+ m_upperbank->set_bank(0);
+
+ // setup save states
+ save_item(NAME(m_speaker_state));
+ save_item(NAME(m_cassette_state));
+ save_item(NAME(m_strobe));
+ save_item(NAME(m_page2));
+
+ // setup video pointers
+ m_video->m_ram_ptr = m_ram_ptr;
+ m_video->m_aux_ptr = m_ram_ptr;
+ m_video->m_char_ptr = NULL;
+ m_video->m_char_size = 0;
+}
+
+void tk2000_state::machine_reset()
+{
+ m_page2 = false;
+ m_strobe = 0;
+}
+
+/***************************************************************************
+ VIDEO
+***************************************************************************/
+
+TIMER_DEVICE_CALLBACK_MEMBER(tk2000_state::apple2_interrupt)
+{
+ int scanline = param;
+
+ if((scanline % 8) == 0)
+ machine().first_screen()->update_partial(machine().first_screen()->vpos());
+
+ // update the video system's shadow copy of the system config at the end of the frame
+ if (scanline == 192)
+ {
+ m_video->m_sysconfig = m_sysconfig->read();
+ }
+}
+
+PALETTE_INIT_MEMBER(tk2000_state, tk2000)
+{
+ m_video->palette_init_apple2(palette);
+}
+
+UINT32 tk2000_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+ m_video->hgr_update(screen, bitmap, cliprect, 0, 191);
+ return 0;
+}
+
+/***************************************************************************
+ I/O
+***************************************************************************/
+// most softswitches don't care about read vs write, so handle them here
+void tk2000_state::do_io(address_space &space, int offset)
+{
+ if(space.debugger_access())
+ {
+ return;
+ }
+
+ switch (offset)
+ {
+ case 0x20:
+ m_cassette_state ^= 1;
+ m_cassette->output(m_cassette_state ? 1.0f : -1.0f);
+ break;
+
+ case 0x30:
+ m_speaker_state ^= 1;
+ m_speaker->level_w(m_speaker_state);
+ break;
+
+ case 0x50: // monochrome
+ break;
+
+ case 0x51: // color
+ break;
+
+ case 0x54: // set page 1
+ m_page2 = false;
+ m_video->m_page2 = false;
+ break;
+
+ case 0x55: // set page 2
+ m_page2 = true;
+ m_video->m_page2 = true;
+ break;
+
+ case 0x5a: // ROM
+ m_upperbank->set_bank(0);
+ break;
+
+ case 0x5b: // RAM
+ m_upperbank->set_bank(1);
+ break;
+
+ case 0x5e:
+ break;
+
+ default:
+ printf("do_io: unk access @ $C0%02X\n", offset & 0xff);
+ break;
+ }
+}
+
+READ8_MEMBER(tk2000_state::c000_r)
+{
+ switch (offset)
+ {
+ case 0x00:
+ return 0;
+
+ case 0x10: // keyboard strobe
+ return m_strobe;
+
+ case 0x60: // cassette in
+ case 0x68:
+ return m_cassette->input() > 0.0 ? 0x80 : 0;
+
+ default:
+ do_io(space, offset);
+ break;
+ }
+
+ return read_floatingbus();
+}
+
+WRITE8_MEMBER(tk2000_state::c000_w)
+{
+ switch (offset)
+ {
+ case 0x00: // write row mask for keyboard scan
+ switch (data)
+ {
+ case 0:
+ break;
+
+ case 0x01: m_strobe = m_row0->read(); break;
+ case 0x02: m_strobe = m_row1->read(); break;
+ case 0x04: m_strobe = m_row2->read(); break;
+ case 0x08: m_strobe = m_row3->read(); break;
+ case 0x10: m_strobe = m_row4->read(); break;
+ case 0x20: m_strobe = m_row5->read(); break;
+ case 0x40: m_strobe = m_row6->read(); break;
+ case 0x80: m_strobe = m_row7->read(); break;
+ }
+ break;
+
+ case 0x5f:
+ m_strobe = m_kbspecial->read();
+ break;
+
+ default:
+ do_io(space, offset);
+ break;
+ }
+}
+
+READ8_MEMBER(tk2000_state::c080_r)
+{
+ return read_floatingbus();
+}
+
+WRITE8_MEMBER(tk2000_state::c080_w)
+{
+}
+
+READ8_MEMBER(tk2000_state::c100_r)
+{
+ return m_ram_ptr[offset + 0xc100];
+}
+
+WRITE8_MEMBER(tk2000_state::c100_w)
+{
+ m_ram_ptr[offset + 0xc100] = data;
+}
+
+// floating bus code from old machine/apple2: needs to be reworked based on real beam position to enable e.g. Bob Bishop's screen splitter
+UINT8 tk2000_state::read_floatingbus()
+{
+ enum
+ {
+ // scanner types
+ kScannerNone = 0, kScannerApple2, kScannerApple2e,
+
+ // scanner constants
+ kHBurstClock = 53, // clock when Color Burst starts
+ kHBurstClocks = 4, // clocks per Color Burst duration
+ kHClock0State = 0x18, // H[543210] = 011000
+ kHClocks = 65, // clocks per horizontal scan (including HBL)
+ kHPEClock = 40, // clock when HPE (horizontal preset enable) goes low
+ kHPresetClock = 41, // clock when H state presets
+ kHSyncClock = 49, // clock when HSync starts
+ kHSyncClocks = 4, // clocks per HSync duration
+ kNTSCScanLines = 262, // total scan lines including VBL (NTSC)
+ kNTSCVSyncLine = 224, // line when VSync starts (NTSC)
+ kPALScanLines = 312, // total scan lines including VBL (PAL)
+ kPALVSyncLine = 264, // line when VSync starts (PAL)
+ kVLine0State = 0x100, // V[543210CBA] = 100000000
+ kVPresetLine = 256, // line when V state presets
+ kVSyncLines = 4, // lines per VSync duration
+ kClocksPerVSync = kHClocks * kNTSCScanLines // FIX: NTSC only?
+ };
+
+ // vars
+ //
+ int i, Hires, Mixed, Page2, _80Store, ScanLines, /* VSyncLine, ScanCycles,*/
+ h_clock, h_state, h_0, h_1, h_2, h_3, h_4, h_5,
+ v_line, v_state, v_A, v_B, v_C, v_0, v_1, v_2, v_3, v_4, /* v_5, */
+ _hires, addend0, addend1, addend2, sum, address;
+
+ // video scanner data
+ //
+ i = m_maincpu->total_cycles() % kClocksPerVSync; // cycles into this VSync
+
+ // machine state switches
+ //
+ Hires = 1; //m_video->m_hires ? 1 : 0;
+ Mixed = 0; //m_video->m_mix ? 1 : 0;
+ Page2 = m_page2 ? 1 : 0;
+ _80Store = 0;
+
+ // calculate video parameters according to display standard
+ //
+ ScanLines = 1 ? kNTSCScanLines : kPALScanLines; // FIX: NTSC only?
+ // VSyncLine = 1 ? kNTSCVSyncLine : kPALVSyncLine; // FIX: NTSC only?
+ // ScanCycles = ScanLines * kHClocks;
+
+ // calculate horizontal scanning state
+ //
+ h_clock = (i + kHPEClock) % kHClocks; // which horizontal scanning clock
+ h_state = kHClock0State + h_clock; // H state bits
+ if (h_clock >= kHPresetClock) // check for horizontal preset
+ {
+ h_state -= 1; // correct for state preset (two 0 states)
+ }
+ h_0 = (h_state >> 0) & 1; // get horizontal state bits
+ h_1 = (h_state >> 1) & 1;
+ h_2 = (h_state >> 2) & 1;
+ h_3 = (h_state >> 3) & 1;
+ h_4 = (h_state >> 4) & 1;
+ h_5 = (h_state >> 5) & 1;
+
+ // calculate vertical scanning state
+ //
+ v_line = i / kHClocks; // which vertical scanning line
+ v_state = kVLine0State + v_line; // V state bits
+ if ((v_line >= kVPresetLine)) // check for previous vertical state preset
+ {
+ v_state -= ScanLines; // compensate for preset
+ }
+ v_A = (v_state >> 0) & 1; // get vertical state bits
+ v_B = (v_state >> 1) & 1;
+ v_C = (v_state >> 2) & 1;
+ v_0 = (v_state >> 3) & 1;
+ v_1 = (v_state >> 4) & 1;
+ v_2 = (v_state >> 5) & 1;
+ v_3 = (v_state >> 6) & 1;
+ v_4 = (v_state >> 7) & 1;
+ //v_5 = (v_state >> 8) & 1;
+
+ // calculate scanning memory address
+ //
+ _hires = Hires;
+ if (Hires && Mixed && (v_4 & v_2))
+ {
+ _hires = 0; // (address is in text memory)
+ }
+
+ addend0 = 0x68; // 1 1 0 1
+ addend1 = (h_5 << 5) | (h_4 << 4) | (h_3 << 3);
+ addend2 = (v_4 << 6) | (v_3 << 5) | (v_4 << 4) | (v_3 << 3);
+ sum = (addend0 + addend1 + addend2) & (0x0F << 3);
+
+ address = 0;
+ address |= h_0 << 0; // a0
+ address |= h_1 << 1; // a1
+ address |= h_2 << 2; // a2
+ address |= sum; // a3 - aa6
+ address |= v_0 << 7; // a7
+ address |= v_1 << 8; // a8
+ address |= v_2 << 9; // a9
+ address |= ((_hires) ? v_A : (1 ^ (Page2 & (1 ^ _80Store)))) << 10; // a10
+ address |= ((_hires) ? v_B : (Page2 & (1 ^ _80Store))) << 11; // a11
+ if (_hires) // hires?
+ {
+ // Y: insert hires only address bits
+ //
+ address |= v_C << 12; // a12
+ address |= (1 ^ (Page2 & (1 ^ _80Store))) << 13; // a13
+ address |= (Page2 & (1 ^ _80Store)) << 14; // a14
+ }
+ else
+ {
+ // N: text, so no higher address bits unless Apple ][, not Apple //e
+ //
+ if ((1) && // Apple ][? // FIX: check for Apple ][? (FB is most useful in old games)
+ (kHPEClock <= h_clock) && // Y: HBL?
+ (h_clock <= (kHClocks - 1)))
+ {
+ address |= 1 << 12; // Y: a12 (add $1000 to address!)
+ }
+ }
+
+ return m_ram_ptr[address % m_ram_size]; // FIX: this seems to work, but is it right!?
+}
+
+/***************************************************************************
+ ADDRESS MAP
+***************************************************************************/
+
+READ8_MEMBER(tk2000_state::ram_r)
+{
+ if (offset < m_ram_size)
+ {
+ return m_ram_ptr[offset];
+ }
+
+ return 0xff;
+}
+
+WRITE8_MEMBER(tk2000_state::ram_w)
+{
+ if (offset < m_ram_size)
+ {
+ m_ram_ptr[offset] = data;
+ }
+}
+
+static ADDRESS_MAP_START( apple2_map, AS_PROGRAM, 8, tk2000_state )
+ AM_RANGE(0x0000, 0xbfff) AM_READWRITE(ram_r, ram_w)
+ AM_RANGE(0xc000, 0xc07f) AM_READWRITE(c000_r, c000_w)
+ AM_RANGE(0xc080, 0xc0ff) AM_READWRITE(c080_r, c080_w)
+ AM_RANGE(0xc100, 0xffff) AM_DEVICE(A2_UPPERBANK_TAG, address_map_bank_device, amap8)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( inhbank_map, AS_PROGRAM, 8, tk2000_state )
+ AM_RANGE(0x0000, 0x3eff) AM_ROM AM_REGION("maincpu", 0x100)
+ AM_RANGE(0x4000, 0x7eff) AM_READWRITE(c100_r, c100_w)
+ADDRESS_MAP_END
+
+/***************************************************************************
+ INPUT PORTS
+***************************************************************************/
+
+/*
+ TK2000 matrix:
+
+ 0 1 2 3 4 5 6 7
+ 0SHIF B V C X Z
+ 1 G F D S A
+ 2 SPC T R E W Q
+ 3 LFT 5 4 3 2 1
+ 4 RGT 6 7 8 9 0
+ 5 DWN Y U I O P
+ 6 UP H J K L :
+ 7 RTN N M , . ?
+
+ write row mask 1/2/4/8/10/20/40/80 to $C000
+ read column at $C010
+
+ If $C05F is written, the Ctrl key is read in bit 0 of $C010 immediately afterwards.
+*/
+static INPUT_PORTS_START( tk2000 )
+ PORT_START("ROW0")
+ PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Shift") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
+ PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHAR('b')
+ PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR('v')
+ PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR('c')
+ PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR('x')
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR('z')
+
+ PORT_START("ROW1")
+ PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_UNUSED)
+ PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_CHAR('g')
+ PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_CHAR('f')
+ PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHAR('d')
+ PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_CHAR('s')
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_CHAR('a')
+
+ PORT_START("ROW2")
+ PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
+ PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_CHAR('t')
+ PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_CHAR('r')
+ PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_CHAR('e')
+ PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_CHAR('w')
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_CHAR('q')
+
+ PORT_START("ROW3")
+ PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(UTF8_LEFT) PORT_CODE(KEYCODE_LEFT)
+ PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
+ PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
+ PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
+ PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('\"')
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
+
+ PORT_START("ROW4")
+ PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(UTF8_RIGHT) PORT_CODE(KEYCODE_RIGHT)
+ PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&')
+ PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'')
+ PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
+ PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')')
+
+ PORT_START("ROW5")
+ PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(UTF8_DOWN) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(10)
+ PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_CHAR('y')
+ PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_CHAR('u')
+ PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('i')
+ PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR('o')
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR('p')
+
+ PORT_START("ROW6")
+ PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(UTF8_UP) PORT_CODE(KEYCODE_UP)
+ PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_CHAR('h')
+ PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('j')
+ PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR('k')
+ PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR('l')
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':')
+
+ PORT_START("ROW7")
+ PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
+ PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR('n')
+ PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR('m')
+ PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
+ PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
+
+ PORT_START("keyb_special")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Control") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_SHIFT_2)
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_UNUSED)
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_UNUSED)
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNUSED)
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED)
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED)
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNUSED)
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED)
+
+ PORT_START("a2_config")
+ PORT_CONFNAME(0x03, 0x00, "Composite monitor type")
+ PORT_CONFSETTING(0x00, "Color")
+ PORT_CONFSETTING(0x01, "B&W")
+ PORT_CONFSETTING(0x02, "Green")
+ PORT_CONFSETTING(0x03, "Amber")
+INPUT_PORTS_END
+
+static MACHINE_CONFIG_START( tk2000, tk2000_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD(A2_CPU_TAG, M6502, 1021800) /* close to actual CPU frequency of 1.020484 MHz */
+ MCFG_CPU_PROGRAM_MAP(apple2_map)
+ MCFG_TIMER_DRIVER_ADD_SCANLINE("scantimer", tk2000_state, apple2_interrupt, "screen", 0, 1)
+ MCFG_QUANTUM_TIME(attotime::from_hz(60))
+
+ MCFG_DEVICE_ADD(A2_VIDEO_TAG, APPLE2_VIDEO, XTAL_14_31818MHz)
+
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_REFRESH_RATE(60)
+ MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
+ MCFG_SCREEN_SIZE(280*2, 262)
+ MCFG_SCREEN_VISIBLE_AREA(0, (280*2)-1,0,192-1)
+ MCFG_SCREEN_UPDATE_DRIVER(tk2000_state, screen_update)
+ MCFG_SCREEN_PALETTE("palette")
+
+ MCFG_PALETTE_ADD("palette", 16)
+ MCFG_PALETTE_INIT_OWNER(tk2000_state, tk2000)
+
+ /* sound hardware */
+ MCFG_SPEAKER_STANDARD_MONO("mono")
+ MCFG_SOUND_ADD(A2_SPEAKER_TAG, SPEAKER_SOUND, 0)
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
+
+ /* /INH banking */
+ MCFG_DEVICE_ADD(A2_UPPERBANK_TAG, ADDRESS_MAP_BANK, 0)
+ MCFG_DEVICE_PROGRAM_MAP(inhbank_map)
+ MCFG_ADDRESS_MAP_BANK_ENDIANNESS(ENDIANNESS_LITTLE)
+ MCFG_ADDRESS_MAP_BANK_DATABUS_WIDTH(8)
+ MCFG_ADDRESS_MAP_BANK_STRIDE(0x4000)
+
+ MCFG_RAM_ADD(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("64K")
+
+ MCFG_CASSETTE_ADD(A2_CASSETTE_TAG)
+ MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED)
+MACHINE_CONFIG_END
+
+/***************************************************************************
+
+ Game driver(s)
+
+***************************************************************************/
+ROM_START(tk2000)
+ ROM_REGION(0x4000,"maincpu",0)
+ ROM_LOAD( "tk2000.rom", 0x000000, 0x004000, CRC(dfdbacc3) SHA1(bb37844c31616046630868a4399ee3d55d6df277) )
+ROM_END
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME */
+COMP( 1984, tk2000, 0, 0, tk2000, tk2000, driver_device, 0, "Microdigital", "TK2000", MACHINE_NOT_WORKING )