diff options
Diffstat (limited to 'src/mess/drivers/tandy2k.c')
-rw-r--r-- | src/mess/drivers/tandy2k.c | 908 |
1 files changed, 0 insertions, 908 deletions
diff --git a/src/mess/drivers/tandy2k.c b/src/mess/drivers/tandy2k.c deleted file mode 100644 index dc3f8e64352..00000000000 --- a/src/mess/drivers/tandy2k.c +++ /dev/null @@ -1,908 +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 - - hires graphics board - - WD1010 - - hard disk - - mouse - -*/ - -#include "includes/tandy2k.h" -#include "machine/pckeybrd.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); -} - -READ8_MEMBER( tandy2k_state::char_ram_r ) -{ - return m_char_ram[offset]; -} - -WRITE8_MEMBER( tandy2k_state::char_ram_w ) -{ - m_char_ram[offset] = data; -} - -READ8_MEMBER( tandy2k_state::videoram_r ) -{ - address_space &program = m_maincpu->space(AS_PROGRAM); - - offs_t addr = (m_vram_base << 15) | (offset << 1); - UINT16 data = program.read_word(addr); - - // character - m_drb0->write(space, 0, data & 0xff); - - // attributes - m_drb1->write(space, 0, data >> 8); - - return data & 0xff; -} - -READ8_MEMBER( 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 data = 0x80; - - data |= m_rs232->ri_r(); - data |= m_rs232->dcd_r() << 1; - - return data; -} - -WRITE8_MEMBER( tandy2k_state::enable_w ) -{ - /* - - 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)); - machine().device<pc_keyboard_device>("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 - if (!BIT(data, 5)) - { - m_fdc->soft_reset(); - } - - // timer 0 enable - m_maincpu->tmrin0_w(BIT(data, 6)); - - // timer 1 enable - m_maincpu->tmrin1_w(BIT(data, 7)); -} - -WRITE8_MEMBER( tandy2k_state::dma_mux_w ) -{ - /* - - 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(); -} - -READ8_MEMBER( tandy2k_state::kbint_clr_r ) -{ - if (m_pb_sel == KBDINEN) - { - m_kb->busy_w(1); - m_pic1->ir0_w(CLEAR_LINE); - - return machine().device<pc_keyboard_device>("pc_keyboard")->read(space, 0); - } - - return 0xff; -} - -READ16_MEMBER( tandy2k_state::vpac_r ) -{ - if (ACCESSING_BITS_0_7) - { - return m_vpac->read(space, offset); - } - else - { - return 0xff00; - } -} - -WRITE16_MEMBER( tandy2k_state::vpac_w ) -{ - if (ACCESSING_BITS_0_7) - { - m_vpac->write(space, offset, data & 0xff); - } - else - { - addr_ctrl_w(space, offset, data >> 8); - } -} - -READ8_MEMBER( tandy2k_state::fldtc_r ) -{ - if (LOG) logerror("FLDTC\n"); - - fldtc_w(space, 0, 0); - - return 0; -} - -WRITE8_MEMBER( tandy2k_state::fldtc_w ) -{ - m_fdc->tc_w(1); - m_fdc->tc_w(false); -} - -WRITE8_MEMBER( tandy2k_state::addr_ctrl_w ) -{ - /* - - 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) - { - float busdotclk = XTAL_16MHz*28 / (clkspd ? 16 : 20); - float 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 - -static ADDRESS_MAP_START( tandy2k_mem, AS_PROGRAM, 16, tandy2k_state ) - ADDRESS_MAP_UNMAP_HIGH -// AM_RANGE(0x00000, 0xdffff) AM_RAM - AM_RANGE(0xe0000, 0xf7fff) AM_RAM AM_SHARE("hires_ram") - AM_RANGE(0xf8000, 0xfbfff) AM_READWRITE8(char_ram_r, char_ram_w, 0x00ff) - AM_RANGE(0xfc000, 0xfdfff) AM_MIRROR(0x2000) AM_ROM AM_REGION(I80186_TAG, 0) -ADDRESS_MAP_END - -static ADDRESS_MAP_START( tandy2k_io, AS_IO, 16, tandy2k_state ) - ADDRESS_MAP_UNMAP_HIGH - AM_RANGE(0x00000, 0x00001) AM_MIRROR(0x8) AM_READWRITE8(enable_r, enable_w, 0x00ff) - AM_RANGE(0x00002, 0x00003) AM_MIRROR(0x8) AM_WRITE8(dma_mux_w, 0x00ff) - AM_RANGE(0x00004, 0x00005) AM_MIRROR(0x8) AM_READWRITE8(fldtc_r, fldtc_w, 0x00ff) - AM_RANGE(0x00010, 0x00013) AM_MIRROR(0xc) AM_DEVREADWRITE8(I8251A_TAG, i8251_device, data_r, data_w, 0x00ff) - AM_RANGE(0x00030, 0x00033) AM_MIRROR(0xc) AM_DEVICE8(I8272A_TAG, i8272a_device, map, 0x00ff) - AM_RANGE(0x00040, 0x00047) AM_MIRROR(0x8) AM_DEVREADWRITE8(I8253_TAG, pit8253_device, read, write, 0x00ff) - AM_RANGE(0x00052, 0x00053) AM_MIRROR(0x8) AM_READ8(kbint_clr_r, 0x00ff) - AM_RANGE(0x00050, 0x00057) AM_MIRROR(0x8) AM_DEVREADWRITE8(I8255A_TAG, i8255_device, read, write, 0x00ff) - AM_RANGE(0x00060, 0x00063) AM_MIRROR(0xc) AM_DEVREADWRITE8(I8259A_0_TAG, pic8259_device, read, write, 0x00ff) - AM_RANGE(0x00070, 0x00073) AM_MIRROR(0xc) AM_DEVREADWRITE8(I8259A_1_TAG, pic8259_device, read, write, 0x00ff) - AM_RANGE(0x00080, 0x00081) AM_MIRROR(0xe) AM_DEVREADWRITE8(I8272A_TAG, i8272a_device, mdma_r, mdma_w, 0x00ff) -// AM_RANGE(0x00100, 0x0017f) AM_DEVREADWRITE8(CRT9007_TAG, crt9007_t, read, write, 0x00ff) AM_WRITE8(addr_ctrl_w, 0xff00) - AM_RANGE(0x00100, 0x0017f) AM_READWRITE(vpac_r, vpac_w) -// AM_RANGE(0x00180, 0x00180) AM_READ8(hires_status_r, 0x00ff) -// AM_RANGE(0x00180, 0x001bf) AM_WRITE(hires_palette_w) -// AM_RANGE(0x001a0, 0x001a0) AM_READ8(hires_plane_w, 0x00ff) -// AM_RANGE(0x0ff00, 0x0ffff) AM_READWRITE(i186_internal_port_r, i186_internal_port_w) -ADDRESS_MAP_END - -static ADDRESS_MAP_START( tandy2k_hd_io, AS_IO, 16, tandy2k_state ) - AM_IMPORT_FROM(tandy2k_io) -// AM_RANGE(0x000e0, 0x000ff) AM_WRITE8(hdc_dack_w, 0x00ff) -// AM_RANGE(0x0026c, 0x0026d) AM_DEVREADWRITE8(WD1010_TAG, wd1010_device, hdc_reset_r, hdc_reset_w, 0x00ff) -// AM_RANGE(0x0026e, 0x0027f) AM_DEVREADWRITE8(WD1010_TAG, wd1010_device, wd1010_r, wd1010_w, 0x00ff) -ADDRESS_MAP_END - -static ADDRESS_MAP_START( vpac_mem, AS_0, 8, tandy2k_state ) - AM_RANGE(0x0000, 0x3fff) AM_READ(videoram_r) -ADDRESS_MAP_END - -// Input Ports - -static INPUT_PORTS_START( tandy2k ) - // defined in machine/tandy2kb.c - PORT_INCLUDE(pc_keyboard) -INPUT_PORTS_END - -// Video - -UINT32 tandy2k_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) -{ - const pen_t *pen = m_palette->pens(); - address_space &program = m_maincpu->space(AS_PROGRAM); - - for (int y = 0; y < 400; y++) - { - UINT8 cgra = y % 16; - - for (int sx = 0; sx < 80; sx++) - { - offs_t addr = m_ram->size() - 0x1400 + (((y / 16) * 80) + sx) * 2; - UINT8 vidla = program.read_word(addr); - UINT8 data = m_char_ram[(vidla << 4) | cgra]; - - for (int x = 0; x < 8; x++) - { - int color = BIT(data, 7); - bitmap.pix32(y, (sx * 8) + x) = pen[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); -} - -WRITE8_MEMBER( tandy2k_state::vidla_w ) -{ - m_vidla = data; -} - -WRITE8_MEMBER( tandy2k_state::drb_attr_w ) -{ - /* - - 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_palette->pens(); - - for (int i = 0; i < 8; i++) - { - int color = BIT(video, 7 - i); - - bitmap.pix32(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 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; -} - -READ8_MEMBER( 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 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; -} - -WRITE8_MEMBER( tandy2k_state::ppi_pc_w ) -{ - /* - - 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); -} - -FLOPPY_FORMATS_MEMBER( tandy2k_state::floppy_formats ) - FLOPPY_TANDY_2000_FORMAT -FLOPPY_FORMATS_END - -static SLOT_INTERFACE_START( tandy2k_floppies ) - SLOT_INTERFACE( "525qd", FLOPPY_525_QD ) -SLOT_INTERFACE_END - -// 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; -} - -READ8_MEMBER( tandy2k_state::irq_callback ) -{ - return (offset ? m_pic1 : m_pic0)->acknowledge(); -} - -// Machine Initialization - -void tandy2k_state::machine_start() -{ - address_space &program = m_maincpu->space(AS_PROGRAM); - UINT8 *ram = m_ram->pointer(); - int ram_size = m_ram->size(); - - program.install_ram(0x00000, ram_size - 1, ram); - - m_char_ram.allocate(0x1000); - - // 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)); -} - -void tandy2k_state::device_reset_after_children() -{ - machine().device<pc_keyboard_device>("pc_keyboard")->enable(0); -} - -// Machine Driver - -static MACHINE_CONFIG_START( tandy2k, tandy2k_state ) - // basic machine hardware - MCFG_CPU_ADD(I80186_TAG, I80186, XTAL_16MHz) - MCFG_CPU_PROGRAM_MAP(tandy2k_mem) - MCFG_CPU_IO_MAP(tandy2k_io) - MCFG_80186_IRQ_SLAVE_ACK(DEVREAD8(DEVICE_SELF, tandy2k_state, irq_callback)) - - // video hardware - MCFG_SCREEN_ADD(SCREEN_TAG, RASTER) - MCFG_SCREEN_REFRESH_RATE(50) - MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) // not accurate - MCFG_SCREEN_SIZE(640, 400) - MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 400-1) - //MCFG_SCREEN_UPDATE_DEVICE(CRT9021B_TAG, crt9021_t, screen_update) - MCFG_SCREEN_UPDATE_DRIVER(tandy2k_state, screen_update) - - MCFG_PALETTE_ADD_MONOCHROME_GREEN("palette") - - MCFG_DEVICE_ADD(CRT9007_TAG, CRT9007, XTAL_16MHz*28/20/8) - MCFG_DEVICE_ADDRESS_MAP(AS_0, vpac_mem) - MCFG_CRT9007_CHARACTER_WIDTH(8) - MCFG_CRT9007_INT_CALLBACK(DEVWRITELINE(I8259A_1_TAG, pic8259_device, ir1_w)) - MCFG_CRT9007_VS_CALLBACK(DEVWRITELINE(CRT9021B_TAG, crt9021_t, vsync_w)) - MCFG_CRT9007_VLT_CALLBACK(WRITELINE(tandy2k_state, vpac_vlt_w)) - MCFG_CRT9007_CURS_CALLBACK(DEVWRITELINE(CRT9021B_TAG, crt9021_t, cursor_w)) - MCFG_CRT9007_DRB_CALLBACK(WRITELINE(tandy2k_state, vpac_drb_w)) - MCFG_CRT9007_WBEN_CALLBACK(WRITELINE(tandy2k_state, vpac_wben_w)) - MCFG_CRT9007_CBLANK_CALLBACK(WRITELINE(tandy2k_state, vpac_cblank_w)) - MCFG_CRT9007_SLG_CALLBACK(WRITELINE(tandy2k_state, vpac_slg_w)) - MCFG_CRT9007_SLD_CALLBACK(WRITELINE(tandy2k_state, vpac_sld_w)) - MCFG_VIDEO_SET_SCREEN(SCREEN_TAG) - - MCFG_DEVICE_ADD(CRT9212_0_TAG, CRT9212, 0) - MCFG_CRT9212_WEN2_VCC() - MCFG_CRT9212_DOUT_CALLBACK(WRITE8(tandy2k_state, vidla_w)) - - MCFG_DEVICE_ADD(CRT9212_1_TAG, CRT9212, 0) - MCFG_CRT9212_WEN2_VCC() - MCFG_CRT9212_DOUT_CALLBACK(WRITE8(tandy2k_state, drb_attr_w)) - - MCFG_DEVICE_ADD(CRT9021B_TAG, CRT9021, XTAL_16MHz*28/20) - MCFG_VIDEO_SET_SCREEN(SCREEN_TAG) - - MCFG_TIMER_DRIVER_ADD("vidldsh", tandy2k_state, vidldsh_tick) - - // sound hardware - MCFG_SPEAKER_STANDARD_MONO("mono") - MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0) - MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) - - // devices - MCFG_DEVICE_ADD(I8255A_TAG, I8255A, 0) - MCFG_I8255_OUT_PORTA_CB(DEVWRITE8("cent_data_out", output_latch_device, write)) - MCFG_I8255_IN_PORTB_CB(READ8(tandy2k_state, ppi_pb_r)) - MCFG_I8255_OUT_PORTC_CB(WRITE8(tandy2k_state, ppi_pc_w)) - - MCFG_DEVICE_ADD(I8251A_TAG, I8251, 0) - MCFG_I8251_TXD_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_txd)) - MCFG_I8251_DTR_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_dtr)) - MCFG_I8251_RTS_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_rts)) - MCFG_I8251_RXRDY_HANDLER(WRITELINE(tandy2k_state, rxrdy_w)) - MCFG_I8251_TXRDY_HANDLER(WRITELINE(tandy2k_state, txrdy_w)) - - MCFG_RS232_PORT_ADD(RS232_TAG, default_rs232_devices, NULL) - MCFG_RS232_RXD_HANDLER(DEVWRITELINE(I8251A_TAG, i8251_device, write_rxd)) - MCFG_RS232_DSR_HANDLER(DEVWRITELINE(I8251A_TAG, i8251_device, write_dsr)) - // TODO pin 15 external transmit clock - // TODO pin 17 external receiver clock - - MCFG_DEVICE_ADD(I8253_TAG, PIT8253, 0) - MCFG_PIT8253_CLK0(XTAL_16MHz/16) - MCFG_PIT8253_OUT0_HANDLER(WRITELINE(tandy2k_state, outspkr_w)) - MCFG_PIT8253_CLK1(XTAL_16MHz/8) - MCFG_PIT8253_OUT1_HANDLER(WRITELINE(tandy2k_state, intbrclk_w)) - //MCFG_PIT8253_CLK2(XTAL_16MHz/8) - //MCFG_PIT8253_OUT2_HANDLER(WRITELINE(tandy2k_state, rfrqpulse_w)) - - MCFG_PIC8259_ADD(I8259A_0_TAG, DEVWRITELINE(I80186_TAG, i80186_cpu_device, int0_w), VCC, NULL) - - MCFG_PIC8259_ADD(I8259A_1_TAG, DEVWRITELINE(I80186_TAG, i80186_cpu_device, int1_w), VCC, NULL) - - MCFG_I8272A_ADD(I8272A_TAG, true) - downcast<i8272a_device *>(device)->set_select_lines_connected(true); - MCFG_UPD765_INTRQ_CALLBACK(DEVWRITELINE(I8259A_0_TAG, pic8259_device, ir4_w)) - MCFG_UPD765_DRQ_CALLBACK(WRITELINE(tandy2k_state, fdc_drq_w)) - MCFG_UPD765_HDL_CALLBACK(WRITELINE(tandy2k_state, fdc_hdl_w)) - MCFG_FLOPPY_DRIVE_ADD(I8272A_TAG ":0", tandy2k_floppies, "525qd", tandy2k_state::floppy_formats) - MCFG_FLOPPY_DRIVE_ADD(I8272A_TAG ":1", tandy2k_floppies, "525qd", tandy2k_state::floppy_formats) - - MCFG_CENTRONICS_ADD(CENTRONICS_TAG, centronics_devices, "printer") - MCFG_CENTRONICS_ACK_HANDLER(WRITELINE(tandy2k_state, write_centronics_ack)) - MCFG_CENTRONICS_BUSY_HANDLER(WRITELINE(tandy2k_state, write_centronics_busy)) - MCFG_CENTRONICS_PERROR_HANDLER(WRITELINE(tandy2k_state, write_centronics_perror)) - MCFG_CENTRONICS_SELECT_HANDLER(WRITELINE(tandy2k_state, write_centronics_select)) - MCFG_CENTRONICS_FAULT_HANDLER(WRITELINE(tandy2k_state, write_centronics_fault)) - - MCFG_CENTRONICS_OUTPUT_LATCH_ADD("cent_data_out", CENTRONICS_TAG) - - MCFG_DEVICE_ADD(TANDY2K_KEYBOARD_TAG, TANDY2K_KEYBOARD, 0) - MCFG_TANDY2000_KEYBOARD_CLOCK_CALLBACK(WRITELINE(tandy2k_state, kbdclk_w)) - MCFG_TANDY2000_KEYBOARD_DATA_CALLBACK(WRITELINE(tandy2k_state, kbddat_w)) - - // temporary until the tandy keyboard has a rom dump - MCFG_PC_KEYB_ADD("pc_keyboard", DEVWRITELINE(I8259A_1_TAG, pic8259_device, ir0_w)) - - - // software lists - MCFG_SOFTWARE_LIST_ADD("flop_list", "tandy2k") - - // internal ram - MCFG_RAM_ADD(RAM_TAG) - MCFG_RAM_DEFAULT_SIZE("128K") - MCFG_RAM_EXTRA_OPTIONS("256K,384K,512K,640K,768K,896K") -MACHINE_CONFIG_END - -static MACHINE_CONFIG_DERIVED( tandy2k_hd, tandy2k ) - // basic machine hardware - MCFG_CPU_MODIFY(I80186_TAG) - MCFG_CPU_IO_MAP(tandy2k_hd_io) - - // Tandon TM502 hard disk - MCFG_HARDDISK_ADD("harddisk0") - //MCFG_WD1010_ADD(WD1010_TAG, wd1010_intf) - //MCFG_WD1100_11_ADD(WD1100_11_TAG, wd1100_11_intf) -MACHINE_CONFIG_END - -// 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 INIT COMPANY FULLNAME FLAGS -COMP( 1983, tandy2k, 0, 0, tandy2k, tandy2k, driver_device, 0, "Tandy Radio Shack", "Tandy 2000", MACHINE_NOT_WORKING ) -COMP( 1983, tandy2khd, tandy2k, 0, tandy2k_hd, tandy2k, driver_device, 0, "Tandy Radio Shack", "Tandy 2000HD", MACHINE_NOT_WORKING ) |