// license:BSD-3-Clause // copyright-holders:R. Belmont, AJR /*************************************************************************** TeleVideo Model 910 / 910 Plus Hardware: 6502 CPU 6545 CRTC 6551 ACIA IRQ = ACIA gated with flip-flop driven by CRTC VBlank (not wire-OR) NMI = AY-5-3600 keyboard char present Esc-V (with a capital V) brings up the self-test screen. TODO: - Reverse attribute handling on the self-test screen doesn't seem to match the picture shown in the Operator's Manual - Make 910 keyboard into a device since the similar Model 925 uses a 950-compatible serial keyboard instead (with a second ACIA) - Add printer port and remaining DIP switches ****************************************************************************/ #include "emu.h" #include "bus/rs232/rs232.h" #include "cpu/m6502/m6502.h" #include "machine/input_merger.h" #include "machine/kb3600.h" #include "machine/mos6551.h" #include "sound/beep.h" #include "video/mc6845.h" #include "screen.h" #include "speaker.h" #define ACIA_TAG "acia" #define CRTC_TAG "crtc" #define RS232_TAG "rs232" #define KBDC_TAG "ay3600" #define MASTER_CLOCK 13.608_MHz_XTAL class tv910_state : public driver_device { public: tv910_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_mainirq(*this, "mainirq") , m_crtc(*this, CRTC_TAG) , m_vram(*this, "vram") , m_chrrom(*this, "graphics") , m_ay3600(*this, KBDC_TAG) , m_kbdrom(*this, "keyboard") , m_kbspecial(*this, "keyb_special") , m_beep(*this, "bell") , m_dsw1(*this, "DSW1") , m_charset(*this, "CHARSET") { } void tv910(machine_config &config); private: virtual void machine_start() override; virtual void machine_reset() override; MC6845_UPDATE_ROW(crtc_update_row); MC6845_ON_UPDATE_ADDR_CHANGED(crtc_update_addr); uint8_t charset_r(); uint8_t kbd_ascii_r(); uint8_t kbd_flags_r(); void vbl_ack_w(uint8_t data); void nmi_ack_w(uint8_t data); void control_w(uint8_t data); DECLARE_WRITE_LINE_MEMBER(vbl_w); DECLARE_READ_LINE_MEMBER(ay3600_shift_r); DECLARE_READ_LINE_MEMBER(ay3600_control_r); DECLARE_WRITE_LINE_MEMBER(ay3600_data_ready_w); DECLARE_WRITE_LINE_MEMBER(ay3600_ako_w); void tv910_mem(address_map &map); required_device m_maincpu; required_device m_mainirq; required_device m_crtc; required_shared_ptr m_vram; required_region_ptr m_chrrom; required_device m_ay3600; required_region_ptr m_kbdrom; required_ioport m_kbspecial; required_device m_beep; required_ioport m_dsw1; required_ioport m_charset; uint16_t m_lastchar, m_strobe; uint8_t m_transchar; bool m_anykeydown; int m_repeatdelay; uint8_t m_control; }; void tv910_state::tv910_mem(address_map &map) { map.unmap_value_high(); map(0x0000, 0x03ff).ram(); map(0x4000, 0x47ff).ram().share("vram"); // VRAM map(0x8010, 0x801f).r(FUNC(tv910_state::charset_r)); map(0x8020, 0x8020).rw(m_crtc, FUNC(r6545_1_device::status_r), FUNC(r6545_1_device::address_w)); map(0x8021, 0x8021).rw(m_crtc, FUNC(r6545_1_device::register_r), FUNC(r6545_1_device::register_w)); map(0x8030, 0x8033).rw(ACIA_TAG, FUNC(mos6551_device::read), FUNC(mos6551_device::write)); map(0x8040, 0x804f).w(FUNC(tv910_state::vbl_ack_w)); map(0x8050, 0x805f).w(FUNC(tv910_state::nmi_ack_w)); map(0x8060, 0x806f).r(FUNC(tv910_state::kbd_ascii_r)); map(0x8070, 0x807f).r(FUNC(tv910_state::kbd_flags_r)); map(0x9000, 0x9000).w(FUNC(tv910_state::control_w)); map(0x9001, 0x9001).portr("DSW1"); map(0x9002, 0x9002).portr("DSW2"); map(0xf000, 0xffff).rom().region("maincpu", 0); } void tv910_state::control_w(uint8_t data) { m_control = data; #if 0 printf("%02x to control (%c%c%c%c%c)\n", data, (data & 0x10) ? 'U' : 'B', (data & 0x8) ? '6' : '5', (data & 0x4) ? 'X' : ' ', (data & 0x2) ? 'C' : 'c', (data & 1) ? 'B' : ' '); #endif m_beep->set_state(BIT(data, 0)); } uint8_t tv910_state::charset_r() { return m_charset->read(); } void tv910_state::nmi_ack_w(uint8_t data) { m_maincpu->set_input_line(M6502_NMI_LINE, CLEAR_LINE); m_strobe = 0; } uint8_t tv910_state::kbd_ascii_r() { return m_transchar; } uint8_t tv910_state::kbd_flags_r() { uint8_t rv = 0; ioport_value kbspecial = m_kbspecial->read(); // D0: Keyboard strobe (AY-5-3600 AKO) if (m_anykeydown) rv |= 0x01; // D1: Printer DTR (pin 20) // D6: FUNC key (not ALPHA LOCK as indicated in memory map) if (BIT(kbspecial, 4)) rv |= 0x40; // D7: ALPHA LOCK key (not FUNC as indicated in memory map) if (BIT(kbspecial, 0)) rv |= 0x80; return rv; } READ_LINE_MEMBER(tv910_state::ay3600_shift_r) { // either shift key if (m_kbspecial->read() & 0x06) { return ASSERT_LINE; } return CLEAR_LINE; } READ_LINE_MEMBER(tv910_state::ay3600_control_r) { if (m_kbspecial->read() & 0x08) { return ASSERT_LINE; } return CLEAR_LINE; } WRITE_LINE_MEMBER(tv910_state::ay3600_data_ready_w) { if (state == ASSERT_LINE) { m_lastchar = m_ay3600->b_r(); m_transchar = m_kbdrom[m_lastchar]; m_strobe = 1; m_maincpu->set_input_line(M6502_NMI_LINE, ASSERT_LINE); //printf("new char = %04x (%02x)\n", m_lastchar, m_transchar); } } WRITE_LINE_MEMBER(tv910_state::ay3600_ako_w) { m_anykeydown = (state == ASSERT_LINE) ? true : false; if (m_anykeydown) { m_repeatdelay = 10; } } /* Input ports */ /* Keyboard matrix (thanks to Al Kossow!) X0 X1 X2 X3 X4 X5 X6 X7 Y8 BKTAB FN19 FN18 FN17 Y7 B 3 E F [ RET ` { Y6 . 7 U K BRK SPACE BS HOME Y5 V 2 W D P ENTER 0 DEL Y4 , 6 Y J ' / 9 DOWN Y3 C 1 Q S O ; = CLRSP Y2 M 5 T H LEFT 8 UP Y1 X ESC TAB A I L - Z Y0 N 4 R G LF PRNT \ RIGHT */ static INPUT_PORTS_START( tv910 ) PORT_START("X0") PORT_BIT(0x001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR('n') PORT_BIT(0x002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR('x') PORT_BIT(0x004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR('m') PORT_BIT(0x008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR('c') PORT_BIT(0x010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<') PORT_BIT(0x020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR('v') PORT_BIT(0x040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>') PORT_BIT(0x080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHAR('b') PORT_BIT(0x100, IP_ACTIVE_HIGH, IPT_UNUSED) PORT_START("X1") PORT_BIT(0x001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') PORT_BIT(0x002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Esc") PORT_CODE(KEYCODE_ESC) PORT_CHAR(27) PORT_BIT(0x004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') PORT_BIT(0x008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') PORT_BIT(0x010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&') PORT_BIT(0x020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('\"') PORT_BIT(0x040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'') PORT_BIT(0x080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') PORT_BIT(0x100, IP_ACTIVE_HIGH, IPT_UNUSED) PORT_START("X2") PORT_BIT(0x001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_CHAR('r') PORT_BIT(0x002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Tab") PORT_CODE(KEYCODE_TAB) PORT_CHAR(9) PORT_BIT(0x004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_CHAR('t') PORT_BIT(0x008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_CHAR('q') PORT_BIT(0x010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_CHAR('y') PORT_BIT(0x020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_CHAR('w') PORT_BIT(0x040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_CHAR('u') PORT_BIT(0x080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_CHAR('e') PORT_BIT(0x100, IP_ACTIVE_HIGH, IPT_UNUSED) PORT_START("X3") PORT_BIT(0x001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_CHAR('g') PORT_BIT(0x002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_CHAR('a') PORT_BIT(0x004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_CHAR('h') PORT_BIT(0x008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_CHAR('s') PORT_BIT(0x010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('j') PORT_BIT(0x020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHAR('d') PORT_BIT(0x040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR('k') PORT_BIT(0x080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_CHAR('f') PORT_BIT(0x100, IP_ACTIVE_HIGH, IPT_UNUSED) PORT_START("X4") /// 001 - LF PORT_BIT(0x002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('i') PORT_BIT(0x004, IP_ACTIVE_HIGH, IPT_UNUSED) PORT_BIT(0x008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR('o') PORT_BIT(0x010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('\'') PORT_CHAR('\"') PORT_BIT(0x020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR('p') /// 040 - BRK PORT_BIT(0x080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') /// 100 - BACKTAB PORT_START("X5") PORT_BIT(0x001, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_PRTSCR) PORT_CHAR(UCHAR_MAMEKEY(PRTSCR)) PORT_BIT(0x002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR('l') PORT_BIT(0x004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(UTF8_LEFT) PORT_CODE(KEYCODE_LEFT) PORT_BIT(0x008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':') PORT_BIT(0x010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?') PORT_BIT(0x020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER_PAD) PORT_CHAR(UCHAR_MAMEKEY(ENTER_PAD)) PORT_BIT(0x040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') PORT_BIT(0x080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) PORT_BIT(0x100, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F19) PORT_CHAR(UCHAR_MAMEKEY(F19)) PORT_START("X6") PORT_BIT(0x001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|') PORT_BIT(0x002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_') PORT_BIT(0x004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(') PORT_BIT(0x008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+') PORT_BIT(0x010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')') PORT_BIT(0x020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')') PORT_BIT(0x040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Backspace") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) PORT_BIT(0x080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('`') PORT_CHAR('~') PORT_BIT(0x100, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F18) PORT_CHAR(UCHAR_MAMEKEY(F18)) PORT_START("X7") PORT_BIT(0x001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(UTF8_RIGHT) PORT_CODE(KEYCODE_RIGHT) PORT_BIT(0x002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR('z') PORT_BIT(0x004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(UTF8_UP) PORT_CODE(KEYCODE_UP) /// 008 - CLRSP PORT_BIT(0x010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(UTF8_DOWN) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(10) // E0 47 PORT_BIT(0x080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('{') PORT_START("X8") PORT_BIT(0x001, IP_ACTIVE_HIGH, IPT_UNUSED) PORT_BIT(0x002, IP_ACTIVE_HIGH, IPT_UNUSED) PORT_BIT(0x004, IP_ACTIVE_HIGH, IPT_UNUSED) PORT_BIT(0x008, IP_ACTIVE_HIGH, IPT_UNUSED) PORT_BIT(0x010, IP_ACTIVE_HIGH, IPT_UNUSED) PORT_BIT(0x020, IP_ACTIVE_HIGH, IPT_UNUSED) PORT_BIT(0x040, IP_ACTIVE_HIGH, IPT_UNUSED) PORT_BIT(0x080, IP_ACTIVE_HIGH, IPT_UNUSED) PORT_BIT(0x100, IP_ACTIVE_HIGH, IPT_UNUSED) PORT_BIT(0x200, IP_ACTIVE_HIGH, IPT_UNUSED) PORT_START("keyb_special") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Caps Lock") PORT_CODE(KEYCODE_CAPSLOCK) PORT_TOGGLE PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Left Shift") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1) PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Right Shift") PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Control") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_SHIFT_2) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Func") PORT_CODE(KEYCODE_LALT) PORT_START("DSW2") PORT_DIPNAME( 0x0f, 0x00, "Baud Rate" ) PORT_DIPLOCATION("S1:4,3,2,1") PORT_DIPSETTING( 0x1, "50" ) PORT_DIPSETTING( 0x2, "75" ) PORT_DIPSETTING( 0x3, "110" ) PORT_DIPSETTING( 0x4, "135" ) PORT_DIPSETTING( 0x5, "150" ) PORT_DIPSETTING( 0x6, "300" ) PORT_DIPSETTING( 0x7, "600" ) PORT_DIPSETTING( 0x8, "1200" ) PORT_DIPSETTING( 0x9, "1800" ) PORT_DIPSETTING( 0xa, "2400" ) PORT_DIPSETTING( 0xb, "3600" ) PORT_DIPSETTING( 0xc, "4800" ) PORT_DIPSETTING( 0xd, "7200" ) PORT_DIPSETTING( 0x0, "9600" ) //PORT_DIPSETTING( 0xe, "9600" ) PORT_DIPSETTING( 0xf, "19200" ) PORT_DIPNAME( 0x10, 0x00, "Word Length" ) PORT_DIPLOCATION("S1:5") PORT_DIPSETTING( 0x00, "8 data bits" ) PORT_DIPSETTING( 0x10, "7 data bits" ) PORT_DIPNAME( 0x20, 0x00, "Parity" ) PORT_DIPLOCATION("S1:6") PORT_DIPSETTING( 0x00, "No parity" ) PORT_DIPSETTING( 0x20, "Send parity" ) PORT_DIPNAME( 0x40, 0x00, "Parity Type" ) PORT_DIPLOCATION("S1:7") PORT_DIPSETTING( 0x00, "Odd" ) PORT_DIPSETTING( 0x40, "Even" ) PORT_DIPNAME( 0x80, 0x00, "Stop Bits" ) PORT_DIPLOCATION("S1:8") PORT_DIPSETTING( 0x00, "1" ) PORT_DIPSETTING( 0x80, "2" ) PORT_START("DSW1") PORT_DIPNAME( 0x01, 0x01, "CR Code" ) PORT_DIPLOCATION("S1:10") // TCHAR0 PORT_DIPSETTING( 0x00, "CR only" ) PORT_DIPSETTING( 0x01, "CRLF" ) PORT_DIPNAME( 0x02, 0x02, "Auto Wraparound at 80th Position" ) PORT_DIPLOCATION("S1:9") // TCHAR1 PORT_DIPSETTING( 0x00, DEF_STR(No) ) PORT_DIPSETTING( 0x02, DEF_STR(Yes) ) // required for self-test to work PORT_DIPNAME( 0x0c, 0x00, "Emulation" ) PORT_DIPLOCATION("S2:1,2") PORT_DIPSETTING( 0x0, "Standard 910" ) PORT_DIPSETTING( 0x4, "ADM-3A/5" ) PORT_DIPSETTING( 0x8, "ADDS 25" ) PORT_DIPSETTING( 0xc, "Hazeltine 1410" ) PORT_DIPNAME( 0x10, 0x00, "Refresh Rate" ) PORT_DIPLOCATION("S2:3") PORT_DIPSETTING( 0x00, "60 Hz" ) PORT_DIPSETTING( 0x10, "50 Hz" ) PORT_DIPNAME( 0x60, 0x00, "Cursor Type" ) PORT_DIPLOCATION("S2:4,5") PORT_DIPSETTING( 0x00, "Blinking block" ) PORT_DIPSETTING( 0x40, "Blinking underline" ) PORT_DIPSETTING( 0x20, "Steady block" ) PORT_DIPSETTING( 0x60, "Steady underline" ) PORT_DIPNAME( 0x80, 0x00, "Conversation Mode" ) PORT_DIPLOCATION("S2:6") // F/HDX PORT_DIPSETTING( 0x00, "Half duplex" ) PORT_DIPSETTING( 0x80, "Full duplex" ) PORT_DIPNAME( 0x100, 0x100, "Colors" ) PORT_DIPLOCATION("S2:7") // BOW/WOB PORT_DIPSETTING( 0x00, "Black characters on green screen" ) PORT_DIPSETTING( 0x100, "Green characters on black screen" ) #if 0 PORT_DIPNAME( 0x200, 0x200, "Data Set Ready" ) PORT_DIPSETTING( 0x00, "DSR connected" ) PORT_DIPSETTING( 0x200, "DSR disconnected" ) #endif PORT_START("CHARSET") // actually a pair of jumpers: E4-E5 (bit 1), E6-E7 (bit 0) PORT_DIPNAME( 0x03, 0x00, "Character Set" ) PORT_DIPSETTING( 0x00, "English" ) PORT_DIPSETTING( 0x01, "German" ) PORT_DIPSETTING( 0x02, "French" ) PORT_DIPSETTING( 0x03, "Spanish" ) INPUT_PORTS_END void tv910_state::machine_start() { // DCD needs to be driven somehow, or else the terminal will complain // CTS also needs to be driven to prevent hanging caused by buffer overflow auto *acia = subdevice(ACIA_TAG); auto *rs232 = subdevice(RS232_TAG); if (rs232->get_card_device() == nullptr) { acia->write_dcd(0); acia->write_cts(0); } // DSR is tied to GND acia->write_dsr(0); } void tv910_state::machine_reset() { control_w(0); } MC6845_ON_UPDATE_ADDR_CHANGED( tv910_state::crtc_update_addr ) { } WRITE_LINE_MEMBER(tv910_state::vbl_w) { // this is ACKed by vbl_ack_w, state going 0 here doesn't ack the IRQ if (state) m_mainirq->in_w<0>(1); } void tv910_state::vbl_ack_w(uint8_t data) { m_mainirq->in_w<0>(0); } MC6845_UPDATE_ROW( tv910_state::crtc_update_row ) { uint32_t *p = &bitmap.pix32(y); uint16_t chr_base = (ra & 7) | m_charset->read() << 10; uint8_t chr = m_vram[0x7ff]; uint8_t att = (chr & 0xf0) == 0x90 ? chr & 0x0f : 0; bool bow = BIT(m_dsw1->read(), 8); for (int i = 0; i < x_count; i++) { uint16_t offset = ( ma + i ) & 0x7ff; uint8_t chr = m_vram[ offset ]; bool att_blk = (chr & 0xf0) == 0x90; bool half_int = BIT(chr, 7) && !att_blk; if (att_blk) att = chr & 0x0f; uint8_t data = m_chrrom[chr_base | (chr & 0x7f) << 3]; rgb_t fg = rgb_t::green(); rgb_t bg = rgb_t::black(); if (half_int) fg = rgb_t(fg.r() / 2, fg.g() / 2, fg.b() / 2); if (ra == 9) data = BIT(att, 3) ? 0xff : 0; else if (ra == 0 || att_blk || BIT(att, 0) || (BIT(att, 1) && BIT(m_control, 1))) data = 0; if (i == cursor_x && (!BIT(m_control, 4) || ra == 9)) data ^= 0xff; if (BIT(att, 2)) data ^= 0xff; if (bow) data ^= 0xff; *p = BIT(data, 7) ? bg : fg; p++; *p = BIT(data, 6) ? bg : fg; p++; *p = BIT(data, 5) ? bg : fg; p++; *p = BIT(data, 4) ? bg : fg; p++; *p = BIT(data, 3) ? bg : fg; p++; *p = BIT(data, 2) ? bg : fg; p++; *p = BIT(data, 1) ? bg : fg; p++; *p = BIT(data, 0) ? bg : fg; p++; } } void tv910_state::tv910(machine_config &config) { /* basic machine hardware */ M6502(config, m_maincpu, MASTER_CLOCK/8); m_maincpu->set_addrmap(AS_PROGRAM, &tv910_state::tv910_mem); INPUT_MERGER_ANY_HIGH(config, "mainirq").output_handler().set_inputline(m_maincpu, M6502_IRQ_LINE); screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); screen.set_raw(MASTER_CLOCK, 840, 0, 640, 270, 0, 240); screen.set_screen_update(CRTC_TAG, FUNC(r6545_1_device::screen_update)); R6545_1(config, m_crtc, MASTER_CLOCK/8); m_crtc->set_screen("screen"); m_crtc->set_show_border_area(false); m_crtc->set_char_width(8); m_crtc->set_update_row_callback(FUNC(tv910_state::crtc_update_row)); m_crtc->set_on_update_addr_change_callback(FUNC(tv910_state::crtc_update_addr)); m_crtc->out_vsync_callback().set(FUNC(tv910_state::vbl_w)); AY3600(config, m_ay3600, 0); m_ay3600->x0().set_ioport("X0"); m_ay3600->x1().set_ioport("X1"); m_ay3600->x2().set_ioport("X2"); m_ay3600->x3().set_ioport("X3"); m_ay3600->x4().set_ioport("X4"); m_ay3600->x5().set_ioport("X5"); m_ay3600->x6().set_ioport("X6"); m_ay3600->x7().set_ioport("X7"); m_ay3600->x8().set_ioport("X8"); m_ay3600->shift().set(FUNC(tv910_state::ay3600_shift_r)); m_ay3600->control().set(FUNC(tv910_state::ay3600_control_r)); m_ay3600->data_ready().set(FUNC(tv910_state::ay3600_data_ready_w)); m_ay3600->ako().set(FUNC(tv910_state::ay3600_ako_w)); mos6551_device &acia(MOS6551(config, ACIA_TAG, 0)); acia.set_xtal(1.8432_MHz_XTAL); acia.irq_handler().set("mainirq", FUNC(input_merger_device::in_w<1>)); acia.txd_handler().set(RS232_TAG, FUNC(rs232_port_device::write_txd)); acia.rts_handler().set(RS232_TAG, FUNC(rs232_port_device::write_rts)); rs232_port_device &rs232(RS232_PORT(config, RS232_TAG, default_rs232_devices, nullptr)); rs232.rxd_handler().set(ACIA_TAG, FUNC(mos6551_device::write_rxd)); rs232.dcd_handler().set(ACIA_TAG, FUNC(mos6551_device::write_dcd)); rs232.cts_handler().set(ACIA_TAG, FUNC(mos6551_device::write_cts)); SPEAKER(config, "mono").front_center(); BEEP(config, m_beep, MASTER_CLOCK / 8400); // 1620 Hz (Row 10 signal) m_beep->add_route(ALL_OUTPUTS, "mono", 0.50); } /* ROM definition */ ROM_START( tv910 ) ROM_REGION(0x1000, "maincpu", 0) ROM_LOAD( "1800000-020e_a38_9182.bin", 0x000000, 0x001000, CRC(ae71dd7f) SHA1(a12da9329e28a4a8e3c902f795059251311d2856) ) ROM_REGION(0x2000, "graphics", 0) ROM_LOAD( "1800000-016a_a17_85ae.bin", 0x000000, 0x001000, CRC(835445b7) SHA1(dde94fb6531dadce48e19bf551f45f61bedf905b) ) ROM_REGION(0x1000, "keyboard", 0) ROM_LOAD( "1800000-019b_bell_a2_43d6.bin", 0x000000, 0x000800, CRC(de954a77) SHA1(c4f7c19799c15d12d89f08dc31064fc6be9befb0) ) ROM_END /* Driver */ // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS COMP( 1981, tv910, 0, 0, tv910, tv910, tv910_state, empty_init, "TeleVideo Systems", "TeleVideo Model 910", 0 )