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Diffstat (limited to 'src/mame/drivers/tandy2k.cpp')
-rw-r--r--src/mame/drivers/tandy2k.cpp1149
1 files changed, 0 insertions, 1149 deletions
diff --git a/src/mame/drivers/tandy2k.cpp b/src/mame/drivers/tandy2k.cpp
deleted file mode 100644
index 02ed64b3754..00000000000
--- a/src/mame/drivers/tandy2k.cpp
+++ /dev/null
@@ -1,1149 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:Curt Coder
-/***************************************************************************
-
- Tandy 2000
-
-****************************************************************************/
-
-/*
-
- TODO:
-
- - floppy
- - HDL is also connected to WP/TS input where TS is used to detect motor status
- - 3 second motor off delay timer
- - video (video RAM is at memory top - 0x1400, i.e. 0x1ec00)
- - keyboard ROM, same as earlier tandy 1000
- - WD1010
- - hard disk
- - clock/mouse 8042 mcu ROM, probably same as tandy 1000 isa clock/mouse adapter
- - sab3019 rtc
-
-*/
-
-#include "emu.h"
-#include "includes/tandy2k.h"
-
-#include "screen.h"
-#include "softlist.h"
-#include "speaker.h"
-
-
-#define LOG 1
-
-// Read/Write Handlers
-
-void tandy2k_state::update_drq()
-{
- int drq0 = CLEAR_LINE;
- int drq1 = CLEAR_LINE;
-
- for (int i = 0; i < 4; i++)
- {
- if (BIT(m_dma_mux, 0 + i))
- {
- if (BIT(m_dma_mux, 4 + i))
- drq1 |= m_busdmarq[i];
- else
- drq0 |= m_busdmarq[i];
- }
- }
-
- m_maincpu->drq0_w(drq0);
- m_maincpu->drq1_w(drq1);
-}
-
-void tandy2k_state::dma_request(int line, int state)
-{
- m_busdmarq[line] = state;
-
- update_drq();
-}
-
-void tandy2k_state::speaker_update()
-{
- int level = !(m_spkrdata & m_outspkr);
-
- m_speaker->level_w(level);
-}
-
-uint8_t tandy2k_state::char_ram_r(offs_t offset)
-{
- return m_char_ram[offset];
-}
-
-void tandy2k_state::char_ram_w(offs_t offset, uint8_t data)
-{
- m_char_ram[offset] = data;
-}
-
-uint8_t tandy2k_state::videoram_r(offs_t offset)
-{
- address_space &program = m_maincpu->space(AS_PROGRAM);
-
- offs_t addr = (m_vram_base << 15) | (offset << 1);
- uint16_t data = program.read_word(addr);
-
- // character
- m_drb0->write(data & 0xff);
-
- // attributes
- m_drb1->write(data >> 8);
-
- return data & 0xff;
-}
-
-uint8_t tandy2k_state::enable_r()
-{
- /*
-
- bit signal description
-
- 0 RS-232 ring indicator
- 1 RS-232 carrier detect
- 2
- 3
- 4
- 5
- 6
- 7 _ACLOW
-
- */
-
- uint8_t data = 0x80;
-
- data |= m_rs232->ri_r();
- data |= m_rs232->dcd_r() << 1;
-
- return data;
-}
-
-void tandy2k_state::enable_w(uint8_t data)
-{
- /*
-
- bit signal description
-
- 0 KBEN keyboard enable
- 1 EXTCLK external baud rate clock
- 2 SPKRGATE enable periodic speaker output
- 3 SPKRDATA direct output to speaker
- 4 RFRQGATE enable refresh and baud rate clocks
- 5 FDCRESET* reset 8272
- 6 TMRIN0 enable 80186 timer 0
- 7 TMRIN1 enable 80186 timer 1
-
- */
-
- if (LOG) logerror("ENABLE %02x\n", data);
-
- // keyboard enable
- m_kb->power_w(BIT(data, 0));
- m_pc_keyboard->enable(BIT(data, 0));
-
- // external baud rate clock
- m_extclk = BIT(data, 1);
-
- // speaker gate
- m_pit->write_gate0(BIT(data, 2));
-
- // speaker data
- m_spkrdata = BIT(data, 3);
- speaker_update();
-
- // refresh and baud rate clocks
- m_pit->write_gate1(BIT(data, 4));
- m_pit->write_gate2(BIT(data, 4));
-
- // FDC reset
- m_fdc->reset_w(!BIT(data, 5));
-
- // timer 0 enable
- m_maincpu->tmrin0_w(BIT(data, 6));
-
- // timer 1 enable
- m_maincpu->tmrin1_w(BIT(data, 7));
-}
-
-void tandy2k_state::dma_mux_w(uint8_t data)
-{
- /*
-
- bit description
-
- 0 DMA channel 0 enable
- 1 DMA channel 1 enable
- 2 DMA channel 2 enable
- 3 DMA channel 3 enable
- 4 DMA channel 0 select
- 5 DMA channel 1 select
- 6 DMA channel 2 select
- 7 DMA channel 3 select
-
- */
-
- if (LOG) logerror("DMA MUX %02x\n", data);
-
- m_dma_mux = data;
-
- // check for DMA error
- int drq0 = 0;
- int drq1 = 0;
-
- for (int ch = 0; ch < 4; ch++)
- {
- if (BIT(data, ch)) { if (BIT(data, ch + 4)) drq1++; else drq0++; }
- }
-
- int dme = (drq0 > 2) || (drq1 > 2);
-
- m_pic1->ir6_w(dme);
-
- update_drq();
-}
-
-uint8_t tandy2k_state::kbint_clr_r()
-{
- if (m_pb_sel == KBDINEN)
- {
- m_kb->busy_w(1);
- m_pic1->ir0_w(CLEAR_LINE);
-
- return m_pc_keyboard->read();
- }
-
- return 0xff;
-}
-
-uint8_t tandy2k_state::clkmouse_r(offs_t offset)
-{
- uint8_t ret = 0;
- switch (offset)
- {
- case 0:
- if (!m_clkmouse_cnt)
- return 0;
- ret = m_clkmouse_cmd[--m_clkmouse_cnt];
- m_pic1->ir2_w(0);
- if (m_clkmouse_cnt > 0)
- m_mcu_delay->adjust(attotime::from_msec(1));
- break;
- case 2:
- ret = m_buttons->read();
- if (m_clkmouse_cnt)
- ret |= 1;
- break;
- }
- return ret;
-}
-
-void tandy2k_state::clkmouse_w(offs_t offset, uint8_t data)
-{
- switch (offset)
- {
- case 0:
- m_pic1->ir2_w(0);
- if (m_clkmouse_cnt < 8)
- m_clkmouse_cmd[m_clkmouse_cnt++] = data;
- break;
- case 1:
- break;
- case 2:
- if (m_clkmouse_cnt < 8)
- m_clkmouse_cmd[m_clkmouse_cnt++] = data;
- switch (m_clkmouse_cmd[0])
- {
- case 0x01: //set time
- break;
- case 0x02: //read time
- break;
- case 0x08:
- if(m_clkmouse_cmd[1] > 0)
- m_clkmouse_irq |= MO_IRQ;
- else
- m_clkmouse_irq &= ~MO_IRQ;
- if(m_clkmouse_cmd[2] > 0)
- m_clkmouse_irq |= BT_IRQ;
- else
- m_clkmouse_irq &= ~BT_IRQ;
- break;
- case 0x20:
- if(m_clkmouse_cmd[1] > 0)
- m_mouse_timer->adjust(attotime::from_hz(40), 0, attotime::from_hz(40));
- else
- m_mouse_timer->adjust(attotime::never);
- break;
- }
- m_clkmouse_cnt = 0;
- break;
- case 3:
- m_pic1->ir2_w(0);
- m_clkmouse_cnt = 0;
- m_clkmouse_irq = 0;
- m_mouse_x = m_x_axis->read();
- m_mouse_y = m_y_axis->read();
- break;
- }
-}
-
-uint8_t tandy2k_state::fldtc_r()
-{
- if (LOG) logerror("FLDTC\n");
-
- fldtc_w(0);
-
- return 0;
-}
-
-void tandy2k_state::fldtc_w(uint8_t data)
-{
- m_fdc->tc_w(1);
- m_fdc->tc_w(false);
-}
-
-void tandy2k_state::addr_ctrl_w(uint8_t data)
-{
- /*
-
- bit signal description
-
- 8 A15 A15 of video access
- 9 A16 A16 of video access
- 10 A17 A17 of video access
- 11 A18 A18 of video access
- 12 A19 A19 of video access
- 13 CLKSP0 clock speed (0 = 22.4 MHz, 1 = 28 MHz)
- 14 CLKCNT dots/char (0 = 10 [800x400], 1 = 8 [640x400])
- 15 VIDOUTS selects the video source for display on monochrome monitor
-
- */
-
- if (LOG) logerror("Address Control %02x\n", data);
-
- // video access
- m_vram_base = data & 0x1f;
-
- // video clock speed
- int clkspd = BIT(data, 5);
- int clkcnt = BIT(data, 6);
-
- if (m_clkspd != clkspd || m_clkcnt != clkcnt)
- {
- const XTAL busdotclk = 16_MHz_XTAL * 28 / (clkspd ? 16 : 20);
- const XTAL vidcclk = busdotclk / (clkcnt ? 8 : 10);
-
- m_vpac->set_character_width(clkcnt ? 8 : 10);
- m_vpac->set_unscaled_clock(vidcclk);
-
- m_vac->set_unscaled_clock(busdotclk);
-
- m_timer_vidldsh->adjust(attotime::from_hz(vidcclk), 0, attotime::from_hz(vidcclk));
-
- m_clkspd = clkspd;
- m_clkcnt = clkcnt;
- }
-
- // video source select
- m_vidouts = BIT(data, 7);
-}
-
-// Memory Maps
-
-void tandy2k_state::vrambank_mem(address_map &map)
-{
- map(0x00000, 0x17fff).ram().share("hires_ram");
- map(0x18000, 0x1ffff).noprw();
-}
-
-void tandy2k_state::tandy2k_mem(address_map &map)
-{
- map.unmap_value_high();
- map(0xe0000, 0xe7fff).rw(m_vrambank, FUNC(address_map_bank_device::read16), FUNC(address_map_bank_device::write16));
- map(0xf8000, 0xfbfff).rw(FUNC(tandy2k_state::char_ram_r), FUNC(tandy2k_state::char_ram_w)).umask16(0x00ff);
- map(0xfc000, 0xfdfff).mirror(0x2000).rom().region(I80186_TAG, 0);
-}
-
-void tandy2k_state::tandy2k_io(address_map &map)
-{
- map.unmap_value_high();
- map(0x00000, 0x00000).mirror(0x8).rw(FUNC(tandy2k_state::enable_r), FUNC(tandy2k_state::enable_w));
- map(0x00002, 0x00002).mirror(0x8).w(FUNC(tandy2k_state::dma_mux_w));
- map(0x00004, 0x00004).mirror(0x8).rw(FUNC(tandy2k_state::fldtc_r), FUNC(tandy2k_state::fldtc_w));
- map(0x00010, 0x00013).mirror(0xc).rw(m_uart, FUNC(i8251_device::read), FUNC(i8251_device::write)).umask16(0x00ff);
- map(0x00030, 0x00033).mirror(0xc).m(m_fdc, FUNC(i8272a_device::map)).umask16(0x00ff);
- map(0x00040, 0x00047).mirror(0x8).rw(m_pit, FUNC(pit8253_device::read), FUNC(pit8253_device::write)).umask16(0x00ff);
- map(0x00050, 0x00057).mirror(0x8).rw(m_i8255a, FUNC(i8255_device::read), FUNC(i8255_device::write)).umask16(0x00ff);
- map(0x00052, 0x00052).mirror(0x8).r(FUNC(tandy2k_state::kbint_clr_r));
- map(0x00060, 0x00063).mirror(0xc).rw(m_pic0, FUNC(pic8259_device::read), FUNC(pic8259_device::write)).umask16(0x00ff);
- map(0x00070, 0x00073).mirror(0xc).rw(m_pic1, FUNC(pic8259_device::read), FUNC(pic8259_device::write)).umask16(0x00ff);
- map(0x00080, 0x00080).mirror(0xe).rw(m_fdc, FUNC(i8272a_device::dma_r), FUNC(i8272a_device::dma_w));
- map(0x00100, 0x0017f).rw(m_vpac, FUNC(crt9007_device::read), FUNC(crt9007_device::write)).umask16(0x00ff);
- map(0x00100, 0x0017f).w(FUNC(tandy2k_state::addr_ctrl_w)).umask16(0xff00);
- map(0x00180, 0x00180).r(FUNC(tandy2k_state::hires_status_r)).umask16(0x00ff);
- map(0x00180, 0x0018f).mirror(0x10).w(m_colpal, FUNC(palette_device::write8)).umask16(0x00ff).share("colpal");
- map(0x001a0, 0x001a0).w(FUNC(tandy2k_state::hires_plane_w)).umask16(0x00ff);
- map(0x002fc, 0x002ff).rw(FUNC(tandy2k_state::clkmouse_r), FUNC(tandy2k_state::clkmouse_w));
-}
-
-void tandy2k_state::tandy2k_hd_io(address_map &map)
-{
- tandy2k_io(map);
-// map(0x000e0, 0x000ff).w(FUNC(tandy2k_state::hdc_dack_w).umask16(0x00ff));
-// map(0x0026c, 0x0026c).rw(WD1010_TAG, FUNC(wd1010_device::hdc_reset_r), FUNC(wd1010_device::hdc_reset_w));
-// map(0x0026e, 0x0027e).rw(WD1010_TAG, FUNC(wd1010_device::wd1010_r), FUNC(wd1010_device::wd1010_w));
-}
-
-void tandy2k_state::vpac_mem(address_map &map)
-{
- map(0x0000, 0x3fff).r(FUNC(tandy2k_state::videoram_r));
-}
-
-// Input Ports
-
-static INPUT_PORTS_START( tandy2k )
- // defined in machine/tandy2kb.c
- PORT_START("MOUSEBTN")
- PORT_BIT( 0xff8f, IP_ACTIVE_HIGH, IPT_UNUSED )
- PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_CODE(MOUSECODE_BUTTON1) PORT_CHANGED_MEMBER(DEVICE_SELF, tandy2k_state, input_changed, 0)
- PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_CODE(MOUSECODE_BUTTON2) PORT_CHANGED_MEMBER(DEVICE_SELF, tandy2k_state, input_changed, 0)
- PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_UNUSED ) /* this would be button three but AFAIK no tandy mouse ever had one */
-
- PORT_START("MOUSEX")
- PORT_BIT( 0xffff, 0x00, IPT_MOUSE_X ) PORT_SENSITIVITY(50) PORT_KEYDELTA(0) PORT_CHANGED_MEMBER(DEVICE_SELF, tandy2k_state, input_changed, 0)
-
- PORT_START("MOUSEY")
- PORT_BIT( 0xffff, 0x00, IPT_MOUSE_Y ) PORT_SENSITIVITY(50) PORT_KEYDELTA(0) PORT_CHANGED_MEMBER(DEVICE_SELF, tandy2k_state, input_changed, 0)
-INPUT_PORTS_END
-
-static INPUT_PORTS_START( tandy2kb_hle )
- PORT_INCLUDE(pc_keyboard)
-
- PORT_MODIFY("pc_keyboard_2")
- PORT_BIT(0x0200, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Cursor Up") PORT_CODE(KEYCODE_UP) /* 29 A9 */
- PORT_BIT(0x0800, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Cursor Left") PORT_CODE(KEYCODE_LEFT) /* 2B AB */
-
- PORT_MODIFY("pc_keyboard_3")
- PORT_BIT(0x0400, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Caps") PORT_CODE(KEYCODE_CAPSLOCK) PORT_TOGGLE /* Caps Lock 3A BA */
-
- PORT_MODIFY("pc_keyboard_4")
- PORT_BIT(0x0020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("NumLock") PORT_CODE(KEYCODE_NUMLOCK) PORT_TOGGLE /* Num Lock 45 C5 */
- /* Hold corresponds to Scroll Lock, but pauses the system when pressed - leaving unmapped by default to avoid conflicting with the UI Toggle key */
- PORT_BIT(0x0040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Hold") /* 46 C6 */
- PORT_BIT(0x0080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP 7 \\") PORT_CODE(KEYCODE_7_PAD) /* Keypad 7 47 C7 */
- PORT_BIT(0x0100, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP 8 ~") PORT_CODE(KEYCODE_8_PAD) /* Keypad 8 48 C8 */
- PORT_BIT(0x0200, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP 9 (PgUp)") PORT_CODE(KEYCODE_9_PAD) /* Keypad 9 (PgUp) 49 C9 */
- PORT_BIT(0x0400, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Cursor Down") PORT_CODE(KEYCODE_DOWN) /* 4A CA */
- PORT_BIT(0x0800, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP 4 |") PORT_CODE(KEYCODE_4_PAD) /* Keypad 4 4B CB */
- PORT_BIT(0x2000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP 6") PORT_CODE(KEYCODE_6_PAD) /* Keypad 6 4D CD */
- PORT_BIT(0x4000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Cursor Right") PORT_CODE(KEYCODE_RIGHT) /* 4E CE */
- PORT_BIT(0x8000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP 1 (End)") PORT_CODE(KEYCODE_1_PAD) /* Keypad 1 (End) 4F CF */
-
- PORT_MODIFY("pc_keyboard_5")
- PORT_BIT(0x0001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP 2 `") PORT_CODE(KEYCODE_2_PAD) /* Keypad 2 50 D0 */
- PORT_BIT(0x0002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP 3 (PgDn)") PORT_CODE(KEYCODE_3_PAD) /* Keypad 3 (PgDn) 51 D1 */
- PORT_BIT(0x0004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP 0") PORT_CODE(KEYCODE_0_PAD) /* Keypad 0 52 D2 */
- PORT_BIT(0x0008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP - (Del)") PORT_CODE(KEYCODE_MINUS_PAD) /* - Delete 53 D3 */
- PORT_BIT(0x0010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Break") PORT_CODE(KEYCODE_STOP) /* Break 54 D4 */
- PORT_BIT(0x0020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("+ Insert") PORT_CODE(KEYCODE_PLUS_PAD) /* + Insert 55 D5 */
- PORT_BIT(0x0040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(".") PORT_CODE(KEYCODE_DEL_PAD) /* . 56 D6 */
- PORT_BIT(0x0080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Enter") PORT_CODE(KEYCODE_ENTER_PAD) /* Enter 57 D7 */
- PORT_BIT(0x0100, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Home") PORT_CODE(KEYCODE_HOME) /* HOME 58 D8 */
- PORT_BIT(0x0200, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F11") PORT_CODE(KEYCODE_F11) /* F11 59 D9 */
- PORT_BIT(0x0400, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F12") PORT_CODE(KEYCODE_F12) /* F12 5a Da */
-INPUT_PORTS_END
-
-class tandy2kb_hle_device : public pc_keyboard_device
-{
-public:
- tandy2kb_hle_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
-
-protected:
- virtual ioport_constructor device_input_ports() const override;
-};
-
-DEFINE_DEVICE_TYPE(TANDY2K_HLE_KEYB, tandy2kb_hle_device, "tandy2kb_hle", "Tandy 2000 Keyboard HLE")
-
-tandy2kb_hle_device::tandy2kb_hle_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
- pc_keyboard_device(mconfig, TANDY2K_HLE_KEYB, tag, owner, clock)
-{
- m_type = KEYBOARD_TYPE::PC;
-}
-
-ioport_constructor tandy2kb_hle_device::device_input_ports() const
-{
- return INPUT_PORTS_NAME(tandy2kb_hle);
-}
-
-INPUT_CHANGED_MEMBER(tandy2k_state::input_changed)
-{
- if (m_clkmouse_cnt || !m_clkmouse_irq)
- return;
- if ((m_clkmouse_irq & BT_IRQ) && (field.name()[5] == 'B'))
- {
- m_clkmouse_cnt = 1;
- m_clkmouse_cmd[0] = 'B';
- }
- else if ((m_clkmouse_irq & MO_IRQ))
- {
- uint16_t x = m_x_axis->read();
- uint16_t y = m_y_axis->read();
- uint16_t dx = x - m_mouse_x;
- uint16_t dy = y - m_mouse_y;
- m_mouse_x = x;
- m_mouse_y = y;
- m_clkmouse_cnt = 5;
- m_clkmouse_cmd[4] = 'M';
- m_clkmouse_cmd[3] = dx & 0xff;
- m_clkmouse_cmd[2] = dx >> 8;
- m_clkmouse_cmd[1] = dy & 0xff;
- m_clkmouse_cmd[0] = dy >> 8;
- }
- m_pic1->ir2_w(1);
-}
-
-// Video
-
-uint32_t tandy2k_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
-{
- const pen_t *cpen = m_colpal->pens();
- address_space &program = m_maincpu->space(AS_PROGRAM);
-
- for (int y = 0; y < 400; y++)
- {
- uint8_t cgra = y % 16;
-
- for (int sx = 0; sx < 80; sx++)
- {
- if (m_hires_en & 2)
- {
- uint8_t a = ((uint8_t *)m_hires_ram.target())[(y * 80) + sx];
- uint8_t b = ((uint8_t *)m_hires_ram.target())[(y * 80) + sx + 0x8000];
- uint8_t c = ((uint8_t *)m_hires_ram.target())[(y * 80) + sx + 0x8000 * 2];
- for (int x = 0; x < 8; x++)
- {
- int color = BIT(a, x) | (BIT(b, x) << 1) | (BIT(c, x) << 2);
- bitmap.pix(y, (sx * 8) + (7 - x)) = cpen[color];
- }
- }
- else
- {
- offs_t addr = m_ram->size() - 0x1400 + (((y / 16) * 80) + sx) * 2;
- uint16_t vidla = program.read_word(addr);
- uint8_t attr = vidla >> 8;
- uint8_t data = m_char_ram[((vidla & 0xff) << 4) | cgra];
- if(attr & 0x80)
- data = ~data;
-
- for (int x = 0; x < 8; x++)
- {
- int color = 4 | (BIT(attr, 6) << 1) | BIT(data, 7);
- bitmap.pix(y, (sx * 8) + x) = cpen[color];
- data <<= 1;
- }
- }
- }
- }
-
- return 0;
-}
-
-WRITE_LINE_MEMBER( tandy2k_state::vpac_vlt_w )
-{
- m_drb0->ren_w(state);
- m_drb0->clrcnt_w(state);
-
- m_drb1->ren_w(state);
- m_drb1->clrcnt_w(state);
-}
-
-WRITE_LINE_MEMBER( tandy2k_state::vpac_drb_w )
-{
- m_drb0->tog_w(state);
- m_drb1->tog_w(state);
-}
-
-WRITE_LINE_MEMBER( tandy2k_state::vpac_wben_w )
-{
- m_drb0->wen1_w(state);
- m_drb1->wen1_w(state);
-}
-
-WRITE_LINE_MEMBER( tandy2k_state::vpac_cblank_w )
-{
- m_cblank = state;
-}
-
-WRITE_LINE_MEMBER( tandy2k_state::vpac_slg_w )
-{
- m_slg = state;
-
- m_vac->slg_w(state);
-}
-
-WRITE_LINE_MEMBER( tandy2k_state::vpac_sld_w )
-{
- m_sld = state;
-
- m_vac->sld_w(state);
-}
-
-void tandy2k_state::hires_plane_w(uint8_t data)
-{
- int bank = 3;
- if (((data & 1) + ((data >> 1) & 1) + ((data >> 2) & 1)) == 1)
- bank = (data & 1) ? 0 : (data & 2) ? 1 : (data & 4) ? 2 : 0;
- m_vrambank->set_bank(bank);
- m_hires_en = (data >> 4) & 3;
-}
-
-// bit 0 - 0 = hires board installed
-// bit 1 - 0 = 1 plane, 1 = 3 planes
-// bit 2-4 - board rev
-uint8_t tandy2k_state::hires_status_r()
-{
- return 2;
-}
-
-void tandy2k_state::vidla_w(uint8_t data)
-{
- m_vidla = data;
-}
-
-void tandy2k_state::drb_attr_w(uint8_t data)
-{
- /*
-
- bit description
-
- 0 BLC -> DBLC (delayed 2 CCLKs)
- 1 BKC -> DBKC (delayed 2 CCLKs)
- 2 CHABL
- 3 MS0
- 4 MS1
- 5 BLINK
- 6 INT
- 7 REVID
-
- */
-
- m_blc = BIT(data, 0);
- m_bkc = BIT(data, 1);
- m_vac->chabl_w(BIT(data, 2));
- m_vac->ms0_w(BIT(data, 3));
- m_vac->ms1_w(BIT(data, 4));
- m_vac->blink_w(BIT(data, 5));
- m_vac->intin_w(BIT(data, 6));
- m_vac->revid_w(BIT(data, 7));
-}
-
-CRT9021_DRAW_CHARACTER_MEMBER( tandy2k_state::vac_draw_character )
-{
- const pen_t *pen = m_colpal->pens();
-
- for (int i = 0; i < 8; i++)
- {
- int color = BIT(video, 7 - i);
-
- bitmap.pix(y, x++) = pen[color];
- }
-}
-
-TIMER_DEVICE_CALLBACK_MEMBER( tandy2k_state::vidldsh_tick )
-{
- m_drb0->rclk_w(0);
- m_drb0->wclk_w(0);
- m_drb1->rclk_w(0);
- m_drb1->wclk_w(0);
- m_vac->ld_sh_w(0);
-
- // 1 busdotclk later
- m_vac->blc_w(BIT(m_dblc, 0));
- m_dblc >>= 1;
- m_dblc |= m_blc << 2;
-
- m_vac->bkc_w(BIT(m_dbkc, 0));
- m_dbkc >>= 1;
- m_dbkc |= m_bkc << 2;
-
- m_vac->retbl_w(BIT(m_dblank, 0));
- m_dblank >>= 1;
- m_dblank |= m_cblank << 2;
-
- if (!m_slg)
- {
- m_cgra >>= 1;
- m_cgra |= m_sld << 3;
- }
-
- uint8_t vidd = m_char_ram[(m_vidla << 4) | m_cgra];
- m_vac->write(vidd);
-
- m_drb0->rclk_w(1);
- m_drb0->wclk_w(1);
- m_drb1->rclk_w(1);
- m_drb1->wclk_w(1);
- m_vac->ld_sh_w(1);
-}
-
-// Intel 8251A Interface
-
-WRITE_LINE_MEMBER( tandy2k_state::rxrdy_w )
-{
- m_rxrdy = state;
- m_pic0->ir2_w(m_rxrdy || m_txrdy);
-}
-
-WRITE_LINE_MEMBER( tandy2k_state::txrdy_w )
-{
- m_txrdy = state;
- m_pic0->ir2_w(m_rxrdy || m_txrdy);
-}
-
-// Intel 8253 Interface
-
-WRITE_LINE_MEMBER( tandy2k_state::outspkr_w )
-{
- m_outspkr = state;
- speaker_update();
-}
-
-WRITE_LINE_MEMBER( tandy2k_state::intbrclk_w )
-{
- if (!m_extclk)
- {
- m_uart->write_txc(state);
- m_uart->write_rxc(state);
- }
-}
-
-WRITE_LINE_MEMBER( tandy2k_state::rfrqpulse_w )
-{
- // memory refresh counter up
-}
-
-// Intel 8255A Interface
-
-WRITE_LINE_MEMBER( tandy2k_state::write_centronics_ack )
-{
- m_centronics_ack = state;
- m_i8255a->pc6_w(state);
-}
-
-WRITE_LINE_MEMBER( tandy2k_state::write_centronics_busy )
-{
- m_centronics_busy = state;
-}
-
-WRITE_LINE_MEMBER( tandy2k_state::write_centronics_perror )
-{
- m_centronics_perror = state;
-}
-
-WRITE_LINE_MEMBER( tandy2k_state::write_centronics_select )
-{
- m_centronics_select = state;
-}
-
-WRITE_LINE_MEMBER( tandy2k_state::write_centronics_fault )
-{
- m_centronics_fault = state;
-}
-
-uint8_t tandy2k_state::ppi_pb_r()
-{
- /*
-
- bit signal description
-
- 0 LPRIN0 auxiliary input 0
- 1 LPRIN1 auxiliary input 1
- 2 LPRIN2 auxiliary input 2
- 3 _LPRACK acknowledge
- 4 _LPRFLT fault
- 5 _LPRSEL select
- 6 LPRPAEM paper empty
- 7 LPRBSY busy
-
- */
-
- uint8_t data = 0;
-
- switch (m_pb_sel)
- {
- case LPINEN:
- // printer acknowledge
- data |= m_centronics_ack << 3;
-
- // printer fault
- data |= m_centronics_fault << 4;
-
- // printer select
- data |= m_centronics_select << 5;
-
- // paper empty
- data |= m_centronics_perror << 6;
-
- // printer busy
- data |= m_centronics_busy << 7;
- break;
-
- case KBDINEN:
- // keyboard data
- data = m_kbdin;
- break;
-
- case PORTINEN:
- // PCB revision
- data = 0x03;
- break;
- }
-
- return data;
-}
-
-void tandy2k_state::ppi_pc_w(uint8_t data)
-{
- /*
-
- bit signal description
-
- 0 port A direction
- 1 port B input select bit 0
- 2 port B input select bit 1
- 3 LPRINT13 interrupt
- 4 STROBE IN
- 5 INBUFFULL
- 6 _LPRACK
- 7 _LPRDATSTB
-
- */
-
- // input select
- m_pb_sel = (data >> 1) & 0x03;
-
- // interrupt
- m_pic1->ir3_w(BIT(data, 3));
-
- // printer strobe
- m_centronics->write_strobe(BIT(data, 7));
-}
-
-
-// Intel 8259 Interfaces
-
-/*
-
- IR0 MEMINT00
- IR1 TMOINT01
- IR2 SERINT02
- IR3 BUSINT03
- IR4 FLDINT04
- IR5 BUSINT05
- IR6 HDCINT06
- IR7 BUSINT07
-
-*/
-
-/*
-
- IR0 KBDINT10
- IR1 VIDINT11
- IR2 RATINT12
- IR3 LPRINT13
- IR4 MCPINT14
- IR5 MEMINT15
- IR6 DMEINT16
- IR7 BUSINT17
-
-*/
-
-// Intel 8272 Interface
-
-WRITE_LINE_MEMBER( tandy2k_state::fdc_drq_w )
-{
- dma_request(0, state);
-}
-
-WRITE_LINE_MEMBER( tandy2k_state::fdc_hdl_w )
-{
- m_floppy0->mon_w(!state);
- m_floppy1->mon_w(!state);
-}
-
-void tandy2k_state::floppy_formats(format_registration &fr)
-{
- fr.add_mfm_containers();
- fr.add(FLOPPY_TANDY_2000_FORMAT);
-}
-
-static void tandy2k_floppies(device_slot_interface &device)
-{
- device.option_add("525qd", FLOPPY_525_QD);
-}
-
-// Keyboard
-
-WRITE_LINE_MEMBER( tandy2k_state::kbdclk_w )
-{
- if (!m_kbdclk && state)
- {
- m_kbdin >>= 1;
- m_kbdin |= m_kb->data_r() << 7;
- }
-
- m_kbdclk = state;
-}
-
-WRITE_LINE_MEMBER( tandy2k_state::kbddat_w )
-{
- if (!m_kbddat && state)
- {
- m_kb->busy_w(m_kbdclk);
- m_pic1->ir0_w(!m_kbdclk);
- }
-
- m_kbddat = state;
-}
-
-uint8_t tandy2k_state::irq_callback(offs_t offset)
-{
- return (offset ? m_pic1 : m_pic0)->acknowledge();
-}
-
-// Machine Initialization
-
-void tandy2k_state::machine_start()
-{
- address_space &program = m_maincpu->space(AS_PROGRAM);
- uint8_t *ram = m_ram->pointer();
- int ram_size = m_ram->size();
-
- program.install_ram(0x00000, ram_size - 1, ram);
-
- m_mouse_timer = timer_alloc(MOUS_TIMER);
- m_mcu_delay = timer_alloc(MCU_DELAY);
-
- // register for state saving
- save_item(NAME(m_dma_mux));
- save_item(NAME(m_kbdclk));
- save_item(NAME(m_kbddat));
- save_item(NAME(m_kbdin));
- save_item(NAME(m_extclk));
- save_item(NAME(m_rxrdy));
- save_item(NAME(m_txrdy));
- save_item(NAME(m_pb_sel));
- save_item(NAME(m_vidouts));
- save_item(NAME(m_clkspd));
- save_item(NAME(m_clkcnt));
- save_item(NAME(m_outspkr));
- save_item(NAME(m_spkrdata));
- save_item(NAME(m_clkmouse_cmd));
- save_item(NAME(m_clkmouse_cnt));
- save_item(NAME(m_clkmouse_irq));
- save_item(NAME(m_mouse_x));
- save_item(NAME(m_mouse_y));
- save_item(NAME(m_hires_en));
-}
-
-void tandy2k_state::machine_reset()
-{
- m_hires_en = 0;
- m_clkmouse_cnt = 0;
- m_clkmouse_irq = 0;
-}
-
-void tandy2k_state::device_reset_after_children()
-{
- m_pc_keyboard->enable(0);
-}
-
-void tandy2k_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
-{
- switch (id)
- {
- case MOUS_TIMER:
- {
- uint16_t x = m_x_axis->read();
- uint16_t y = m_y_axis->read();
- uint16_t dx = x - m_mouse_x;
- uint16_t dy = y - m_mouse_y;
- m_mouse_x = x;
- m_mouse_y = y;
- m_clkmouse_cnt = 5;
- m_clkmouse_cmd[4] = 'A';
- m_clkmouse_cmd[3] = dx & 0xff;
- m_clkmouse_cmd[2] = dx >> 8;
- m_clkmouse_cmd[1] = dy & 0xff;
- m_clkmouse_cmd[0] = dy >> 8;
- m_pic1->ir2_w(1);
- break;
- }
- case MCU_DELAY:
- m_pic1->ir2_w(1);
- break;
- }
-}
-
-rgb_t tandy2k_state::IRGB(uint32_t raw)
-{
- uint8_t i = (raw >> 3) & 1;
- return rgb_t(pal2bit(((raw & 4) >> 1) | i), pal2bit((raw & 2) | i), pal2bit(((raw & 1) << 1) | i));
-}
-
-// Machine Driver
-
-void tandy2k_state::tandy2k(machine_config &config)
-{
- // basic machine hardware
- I80186(config, m_maincpu, 16_MHz_XTAL);
- m_maincpu->set_addrmap(AS_PROGRAM, &tandy2k_state::tandy2k_mem);
- m_maincpu->set_addrmap(AS_IO, &tandy2k_state::tandy2k_io);
- m_maincpu->read_slave_ack_callback().set(FUNC(tandy2k_state::irq_callback));
-
- // video hardware
- screen_device &screen(SCREEN(config, SCREEN_TAG, SCREEN_TYPE_RASTER));
- screen.set_refresh_hz(50);
- screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); // not accurate
- screen.set_size(640, 400);
- screen.set_visarea(0, 640-1, 0, 400-1);
- //screen.set_screen_update(CRT9021B_TAG, FUNC(crt9021_device::screen_update));
- screen.set_screen_update(FUNC(tandy2k_state::screen_update));
-
- PALETTE(config, m_colpal).set_format(1, &tandy2k_state::IRGB, 8);
-
- crt9007_device &vpac(CRT9007(config, CRT9007_TAG, 16_MHz_XTAL * 28 / 20 / 8));
- vpac.set_addrmap(0, &tandy2k_state::vpac_mem);
- vpac.set_character_width(8);
- vpac.int_callback().set(I8259A_1_TAG, FUNC(pic8259_device::ir1_w));
- vpac.vs_callback().set(CRT9021B_TAG, FUNC(crt9021_device::vsync_w));
- vpac.vlt_callback().set(FUNC(tandy2k_state::vpac_vlt_w));
- vpac.curs_callback().set(CRT9021B_TAG, FUNC(crt9021_device::cursor_w));
- vpac.drb_callback().set(FUNC(tandy2k_state::vpac_drb_w));
- vpac.wben_callback().set(FUNC(tandy2k_state::vpac_wben_w));
- vpac.cblank_callback().set(FUNC(tandy2k_state::vpac_cblank_w));
- vpac.slg_callback().set(FUNC(tandy2k_state::vpac_slg_w));
- vpac.sld_callback().set(FUNC(tandy2k_state::vpac_sld_w));
- vpac.set_screen(SCREEN_TAG);
-
- CRT9212(config, m_drb0, 0);
- m_drb0->set_wen2(1);
- m_drb0->dout().set(FUNC(tandy2k_state::vidla_w));
-
- CRT9212(config, m_drb1, 0);
- m_drb1->set_wen2(1);
- m_drb1->dout().set(FUNC(tandy2k_state::drb_attr_w));
-
- CRT9021(config, m_vac, 16_MHz_XTAL * 28 / 20);
- m_vac->set_screen(SCREEN_TAG);
-
- ADDRESS_MAP_BANK(config, m_vrambank).set_map(&tandy2k_state::vrambank_mem).set_options(ENDIANNESS_LITTLE, 16, 17, 0x8000);
-
- TIMER(config, "vidldsh").configure_generic(FUNC(tandy2k_state::vidldsh_tick));
-
- // sound hardware
- SPEAKER(config, "mono").front_center();
- SPEAKER_SOUND(config, m_speaker).add_route(ALL_OUTPUTS, "mono", 0.25);
-
- // devices
- I8255A(config, m_i8255a);
- m_i8255a->out_pa_callback().set("cent_data_out", FUNC(output_latch_device::write));
- m_i8255a->in_pb_callback().set(FUNC(tandy2k_state::ppi_pb_r));
- m_i8255a->out_pc_callback().set(FUNC(tandy2k_state::ppi_pc_w));
-
- I8251(config, m_uart, 0);
- m_uart->txd_handler().set(m_rs232, FUNC(rs232_port_device::write_txd));
- m_uart->dtr_handler().set(m_rs232, FUNC(rs232_port_device::write_dtr));
- m_uart->rts_handler().set(m_rs232, FUNC(rs232_port_device::write_rts));
- m_uart->rxrdy_handler().set(FUNC(tandy2k_state::rxrdy_w));
- m_uart->txrdy_handler().set(FUNC(tandy2k_state::txrdy_w));
-
- RS232_PORT(config, m_rs232, default_rs232_devices, nullptr);
- m_rs232->rxd_handler().set(m_uart, FUNC(i8251_device::write_rxd));
- m_rs232->dsr_handler().set(m_uart, FUNC(i8251_device::write_dsr));
- // TODO pin 15 external transmit clock
- // TODO pin 17 external receiver clock
-
- PIT8253(config, m_pit, 0);
- m_pit->set_clk<0>(16_MHz_XTAL / 16);
- m_pit->out_handler<0>().set(FUNC(tandy2k_state::outspkr_w));
- m_pit->set_clk<1>(16_MHz_XTAL / 8);
- m_pit->out_handler<1>().set(FUNC(tandy2k_state::intbrclk_w));
- //m_pit->set_clk<2>(16_MHz_XTAL / 8);
- //m_pit->out_handler<2>().set(FUNC(tandy2k_state::rfrqpulse_w));
-
- PIC8259(config, m_pic0, 0);
- m_pic0->out_int_callback().set(m_maincpu, FUNC(i80186_cpu_device::int0_w));
-
- PIC8259(config, m_pic1, 0);
- m_pic1->out_int_callback().set(m_maincpu, FUNC(i80186_cpu_device::int1_w));
-
- I8272A(config, m_fdc, 16_MHz_XTAL / 4, true);
- m_fdc->set_select_lines_connected(true);
- m_fdc->intrq_wr_callback().set(m_pic0, FUNC(pic8259_device::ir4_w));
- m_fdc->drq_wr_callback().set(FUNC(tandy2k_state::fdc_drq_w));
- m_fdc->hdl_wr_callback().set(FUNC(tandy2k_state::fdc_hdl_w));
- FLOPPY_CONNECTOR(config, I8272A_TAG ":0", tandy2k_floppies, "525qd", tandy2k_state::floppy_formats);
- FLOPPY_CONNECTOR(config, I8272A_TAG ":1", tandy2k_floppies, "525qd", tandy2k_state::floppy_formats);
-
- CENTRONICS(config, m_centronics, centronics_devices, "printer");
- m_centronics->ack_handler().set(FUNC(tandy2k_state::write_centronics_ack));
- m_centronics->busy_handler().set(FUNC(tandy2k_state::write_centronics_busy));
- m_centronics->perror_handler().set(FUNC(tandy2k_state::write_centronics_perror));
- m_centronics->select_handler().set(FUNC(tandy2k_state::write_centronics_select));
- m_centronics->fault_handler().set(FUNC(tandy2k_state::write_centronics_fault));
-
- output_latch_device &cent_data_out(OUTPUT_LATCH(config, "cent_data_out"));
- m_centronics->set_output_latch(cent_data_out);
-
- TANDY2K_KEYBOARD(config, m_kb, 0);
- m_kb->clock_wr_callback().set(FUNC(tandy2k_state::kbdclk_w));
- m_kb->data_wr_callback().set(FUNC(tandy2k_state::kbddat_w));
-
- // temporary until the tandy keyboard has a rom dump
- TANDY2K_HLE_KEYB(config, m_pc_keyboard, 0).keypress().set(I8259A_1_TAG, FUNC(pic8259_device::ir0_w));
-
- // software lists
- SOFTWARE_LIST(config, "flop_list").set_original("tandy2k");
-
- // internal ram
- RAM(config, RAM_TAG).set_default_size("128K").set_extra_options("256K,384K,512K,640K,768K,896K");
-}
-
-void tandy2k_state::tandy2k_hd(machine_config &config)
-{
- tandy2k(config);
- // basic machine hardware
- m_maincpu->set_addrmap(AS_IO, &tandy2k_state::tandy2k_hd_io);
-
- // Tandon TM502 hard disk
- HARDDISK(config, "harddisk0", 0);
- //MCFG_WD1010_ADD(WD1010_TAG, wd1010_intf)
- //MCFG_WD1100_11_ADD(WD1100_11_TAG, wd1100_11_intf)
-}
-
-// ROMs
-
-ROM_START( tandy2k )
- ROM_REGION( 0x2000, I80186_TAG, 0 )
- ROM_LOAD16_BYTE( "484a00.u48", 0x0000, 0x1000, CRC(a5ee3e90) SHA1(4b1f404a4337c67065dd272d62ff88dcdee5e34b) )
- ROM_LOAD16_BYTE( "474600.u47", 0x0001, 0x1000, CRC(345701c5) SHA1(a775cbfa110b7a88f32834aaa2a9b868cbeed25b) )
-
- ROM_REGION( 0x100, "plds", 0 )
- ROM_LOAD( "82s153.u62", 0x000, 0x100, NO_DUMP ) // interrupt/DMA
- ROM_LOAD( "82s153.u68", 0x000, 0x100, NO_DUMP ) // video
- ROM_LOAD( "82s153.u95", 0x000, 0x100, NO_DUMP ) // memory timing
- ROM_LOAD( "pal10l8.u82", 0x000, 0x100, NO_DUMP ) // video
- ROM_LOAD( "pal16l8a.u102", 0x000, 0x100, NO_DUMP ) // bus interface
- ROM_LOAD( "pal16l8a.u103", 0x000, 0x100, NO_DUMP ) // bus interface
- ROM_LOAD( "pal20l8.u103", 0x000, 0x100, NO_DUMP ) // bus interface, alternate
- ROM_LOAD( "pal16r6a.u16", 0x000, 0x100, NO_DUMP ) // HDC
-ROM_END
-
-#define rom_tandy2khd rom_tandy2k
-
-// System Drivers
-
-// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
-COMP( 1983, tandy2k, 0, 0, tandy2k, tandy2k, tandy2k_state, empty_init, "Tandy Radio Shack", "Tandy 2000", MACHINE_NOT_WORKING )
-COMP( 1983, tandy2khd, tandy2k, 0, tandy2k_hd, tandy2k, tandy2k_state, empty_init, "Tandy Radio Shack", "Tandy 2000HD", MACHINE_NOT_WORKING )