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Diffstat (limited to 'src/mess/drivers/tec1.c')
-rw-r--r-- | src/mess/drivers/tec1.c | 463 |
1 files changed, 0 insertions, 463 deletions
diff --git a/src/mess/drivers/tec1.c b/src/mess/drivers/tec1.c deleted file mode 100644 index bfd701676f9..00000000000 --- a/src/mess/drivers/tec1.c +++ /dev/null @@ -1,463 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Robbbert -/*************************************************************************** - - TEC-1 driver, written by Robbbert in April, 2009 for MESS. - -The TEC-1 was a single-board "computer" described in Talking Electronics -magazine, issues number 10 and 11. Talking Electronics do not have dates on -their issues, so the date is uncertain, although 1984 seems a reasonable -guess. Talking Electronics operated from Cheltenham, a suburb of Melbourne. - -The hardware is quite simple, consisting of a Z80 cpu, 2x 8212 8-bit latch, -74C923 keyboard scanner, 20 push-button keys, 6-digit LED display, a speaker, -a 2k EPROM and sundry parts. - -The cpu speed could be adjusted by using a potentiometer, the range being -250 kHz to 2MHz. This is a simple method of adjusting a game's difficulty. - -We emulate the original version. Later enhancements included more RAM, speech -synthesis and various attachments, however I have no information on these. - -Pasting: - 0-F : as is - + (inc) : ^ - - (dec) : V - AD : - - GO : X - -Keys: -0 to 9, A to F are on the key of the same name. -AD (input an address) is the '-' key. -+ and - (increment / decrement address) are the up and down-arrow keys. -GO (execute program at current address) is the X key. -SHIFT - later monitor versions utilised an extra shift button. Hold - it down and press another key (use Left Shift). - -Whenever a program listing mentions RESET, do a Soft Reset. - -Each key causes a beep to be heard. You may need to press more than once -to get it to register. - -Inbuilt games - press the following sequence of keys: -- Welcome: RESET D 1 + 0 2 AD 0 2 7 0 GO GO (Paste: D1^02 -0270XX) -- Nim: RESET AD 3 E 0 GO GO (Paste: -3E0XX) -- Invaders: RESET AD 3 2 0 GO GO (Paste: -320XX) -- Luna Lander: RESET AD 4 9 0 GO GO (Paste: -490XX) - -Thanks to Chris Schwartz who dumped his ROM for me way back in the old days. -It's only taken 25 years to get around to emulating it... - - -Differences between tec1 and tecjmon: - -On the tec1 a keypress is indicated by an NMI from the 74C923; but on -the jmon it sets bit 6 of port 3 low instead. The NMI code is simply -a 'retn' in the jmon rom, so we can use the same code. -The jmon includes a cassette interface, a serial input connection, -and an optional LCD, but the games of the tec1 have been removed. - - -ToDo: -- After a Soft Reset, pressing keys can crash the emulation. -- The 74C923 code may need to be revisited to improve keyboard response. - Sometimes have to press a key a few times before it registers. -- The 10ms debounce is not emulated. - - -JMON ToDo: -- Add LCD display (2 rows by 16 characters) - - -***************************************************************************/ - -#include "emu.h" -#include "cpu/z80/z80.h" -#include "sound/speaker.h" -#include "sound/wave.h" -#include "imagedev/cassette.h" -#include "tec1.lh" - - -class tec1_state : public driver_device -{ -public: - tec1_state(const machine_config &mconfig, device_type type, const char *tag) - : driver_device(mconfig, type, tag), - m_maincpu(*this, "maincpu"), - m_speaker(*this, "speaker"), - m_cass(*this, "cassette"), - m_wave(*this, WAVE_TAG), - m_key_pressed(0), - m_io_line0(*this, "LINE0"), - m_io_line1(*this, "LINE1"), - m_io_line2(*this, "LINE2"), - m_io_line3(*this, "LINE3"), - m_io_shift(*this, "SHIFT") - { } - - required_device<cpu_device> m_maincpu; - required_device<speaker_sound_device> m_speaker; - optional_device<cassette_image_device> m_cass; - optional_device<wave_device> m_wave; - bool m_key_pressed; - required_ioport m_io_line0; - required_ioport m_io_line1; - required_ioport m_io_line2; - required_ioport m_io_line3; - required_ioport m_io_shift; - emu_timer *m_kbd_timer; - DECLARE_READ8_MEMBER( tec1_kbd_r ); - DECLARE_READ8_MEMBER( latch_r ); - DECLARE_WRITE8_MEMBER( tec1_digit_w ); - DECLARE_WRITE8_MEMBER( tecjmon_digit_w ); - DECLARE_WRITE8_MEMBER( tec1_segment_w ); - UINT8 m_kbd; - UINT8 m_segment; - UINT8 m_digit; - UINT8 m_kbd_row; - UINT8 m_refresh[6]; - UINT8 tec1_convert_col_to_bin( UINT8 col, UINT8 row ); - virtual void machine_reset(); - virtual void machine_start(); - TIMER_CALLBACK_MEMBER(tec1_kbd_callback); -}; - - - - -/*************************************************************************** - - Display - -***************************************************************************/ - -WRITE8_MEMBER( tec1_state::tec1_segment_w ) -{ -/* d7 segment d - d6 segment e - d5 segment c - d4 segment dot - d3 segment b - d2 segment g - d1 segment f - d0 segment a */ - - m_segment = BITSWAP8(data, 4, 2, 1, 6, 7, 5, 3, 0); -} - -WRITE8_MEMBER( tec1_state::tec1_digit_w ) -{ -/* d7 speaker - d6 not used - d5 data digit 1 - d4 data digit 2 - d3 address digit 1 - d2 address digit 2 - d1 address digit 3 - d0 address digit 4 */ - - m_speaker->level_w(BIT(data, 7)); - - m_digit = data & 0x3f; -} - -WRITE8_MEMBER( tec1_state::tecjmon_digit_w ) -{ -/* d7 speaker & cassout - d6 not used - d5 data digit 1 - d4 data digit 2 - d3 address digit 1 - d2 address digit 2 - d1 address digit 3 - d0 address digit 4 */ - - m_speaker->level_w(BIT(data, 7)); - m_cass->output(BIT(data, 7) ? -1.0 : +1.0); - m_digit = data & 0x3f; -} - - -/*************************************************************************** - - Keyboard - -***************************************************************************/ - -READ8_MEMBER( tec1_state::latch_r ) -{ -// bit 7 - cass in ; bit 6 low = key pressed - UINT8 data = (m_key_pressed) ? 0 : 0x40; - - if (m_cass->input() > 0.03) - data |= 0x80; - - return data; -} - - -READ8_MEMBER( tec1_state::tec1_kbd_r ) -{ - m_maincpu->set_input_line(INPUT_LINE_NMI, CLEAR_LINE); - return m_kbd | m_io_shift->read(); -} - -UINT8 tec1_state::tec1_convert_col_to_bin( UINT8 col, UINT8 row ) -{ - UINT8 data = row; - - if (BIT(col, 1)) - data |= 4; - else - if (BIT(col, 2)) - data |= 8; - else - if (BIT(col, 3)) - data |= 12; - else - if (BIT(col, 4)) - data |= 16; - - return data; -} - -TIMER_CALLBACK_MEMBER(tec1_state::tec1_kbd_callback) -{ - UINT8 i; - - // Display the digits. Blank any digits that haven't been refreshed for a while. - // This will fix the problem reported by a user. - for (i = 0; i < 6; i++) - { - if (BIT(m_digit, i)) - { - m_refresh[i] = 1; - output_set_digit_value(i, m_segment); - } - else - if (m_refresh[i] == 0x80) - { - output_set_digit_value(i, 0); - m_refresh[i] = 0; - } - else - if (m_refresh[i]) - m_refresh[i]++; - } - - // 74C923 4 by 5 key encoder. - - /* Look at old row */ - if (m_kbd_row == 0) - i = m_io_line0->read(); - else - if (m_kbd_row == 1) - i = m_io_line1->read(); - else - if (m_kbd_row == 2) - i = m_io_line2->read(); - else - if (m_kbd_row == 3) - i = m_io_line3->read(); - - /* if previous key is still held, bail out */ - if (i) - if (tec1_convert_col_to_bin(i, m_kbd_row) == m_kbd) - return; - - m_kbd_row++; - m_kbd_row &= 3; - - /* Look at a new row */ - if (m_kbd_row == 0) - i = m_io_line0->read(); - else - if (m_kbd_row == 1) - i = m_io_line1->read(); - else - if (m_kbd_row == 2) - i = m_io_line2->read(); - else - if (m_kbd_row == 3) - i = m_io_line3->read(); - - /* see if a key pressed */ - if (i) - { - m_kbd = tec1_convert_col_to_bin(i, m_kbd_row); - m_maincpu->set_input_line(INPUT_LINE_NMI, HOLD_LINE); - m_key_pressed = TRUE; - } - else - m_key_pressed = FALSE; -} - - -/*************************************************************************** - - Machine - -***************************************************************************/ - -void tec1_state::machine_start() -{ - m_kbd_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(tec1_state::tec1_kbd_callback),this)); - m_kbd_timer->adjust( attotime::zero, 0, attotime::from_hz(500) ); -} - -void tec1_state::machine_reset() -{ - m_kbd = 0; -} - - - -/*************************************************************************** - - Address Map - -***************************************************************************/ - -static ADDRESS_MAP_START( tec1_map, AS_PROGRAM, 8, tec1_state ) - ADDRESS_MAP_GLOBAL_MASK(0x3fff) - AM_RANGE(0x0000, 0x07ff) AM_ROM - AM_RANGE(0x0800, 0x0fff) AM_RAM // on main board - AM_RANGE(0x1000, 0x3fff) AM_RAM // expansion -ADDRESS_MAP_END - -static ADDRESS_MAP_START( tec1_io, AS_IO, 8, tec1_state ) - ADDRESS_MAP_GLOBAL_MASK(0x07) - AM_RANGE(0x00, 0x00) AM_READ(tec1_kbd_r) - AM_RANGE(0x01, 0x01) AM_WRITE(tec1_digit_w) - AM_RANGE(0x02, 0x02) AM_WRITE(tec1_segment_w) -ADDRESS_MAP_END - - -static ADDRESS_MAP_START( tecjmon_map, AS_PROGRAM, 8, tec1_state ) - ADDRESS_MAP_GLOBAL_MASK(0x3fff) - AM_RANGE(0x0000, 0x07ff) AM_ROM - AM_RANGE(0x0800, 0x37ff) AM_RAM - AM_RANGE(0x3800, 0x3fff) AM_ROM -ADDRESS_MAP_END - -static ADDRESS_MAP_START( tecjmon_io, AS_IO, 8, tec1_state ) - ADDRESS_MAP_GLOBAL_MASK(0xff) - AM_RANGE(0x00, 0x00) AM_READ(tec1_kbd_r) - AM_RANGE(0x01, 0x01) AM_WRITE(tecjmon_digit_w) - AM_RANGE(0x02, 0x02) AM_WRITE(tec1_segment_w) - AM_RANGE(0x03, 0x03) AM_READ(latch_r) - //AM_RANGE(0x04, 0x04) AM_WRITE(lcd_en_w) - //AM_RANGE(0x84, 0x84) AM_WRITE(lcd_2nd_w) -ADDRESS_MAP_END - - -/************************************************************************** - - Keyboard Layout - -***************************************************************************/ - -static INPUT_PORTS_START( tec1 ) - PORT_START("LINE0") /* KEY ROW 0 */ - PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CHAR('0') - PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("4") PORT_CODE(KEYCODE_4) PORT_CHAR('4') - PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("8") PORT_CODE(KEYCODE_8) PORT_CHAR('8') - PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('C') - PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("+") PORT_CODE(KEYCODE_UP) PORT_CHAR('^') - - PORT_START("LINE1") /* KEY ROW 1 */ - PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("1") PORT_CODE(KEYCODE_1) PORT_CHAR('1') - PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("5") PORT_CODE(KEYCODE_5) PORT_CHAR('5') - PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("9") PORT_CODE(KEYCODE_9) PORT_CHAR('9') - PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('D') - PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("-") PORT_CODE(KEYCODE_DOWN) PORT_CHAR('V') - - PORT_START("LINE2") /* KEY ROW 2 */ - PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("2") PORT_CODE(KEYCODE_2) PORT_CHAR('2') - PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("6") PORT_CODE(KEYCODE_6) PORT_CHAR('6') - PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('A') - PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('E') - PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("GO") PORT_CODE(KEYCODE_X) PORT_CHAR('X') - - PORT_START("LINE3") /* KEY ROW 3 */ - PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("3") PORT_CODE(KEYCODE_3) PORT_CHAR('3') - PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("7") PORT_CODE(KEYCODE_7) PORT_CHAR('7') - PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('B') - PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('F') - PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("AD") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') - - PORT_START("SHIFT") - PORT_BIT(0x1f, IP_ACTIVE_HIGH, IPT_UNUSED) - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Shift") PORT_CODE(KEYCODE_LSHIFT) - PORT_BIT(0xc0, IP_ACTIVE_LOW, IPT_UNUSED) -INPUT_PORTS_END - - -/*************************************************************************** - - Machine driver - -***************************************************************************/ - -static MACHINE_CONFIG_START( tec1, tec1_state ) - /* basic machine hardware */ - MCFG_CPU_ADD("maincpu", Z80, 1000000) /* speed can be varied between 250kHz and 2MHz */ - MCFG_CPU_PROGRAM_MAP(tec1_map) - MCFG_CPU_IO_MAP(tec1_io) - - /* video hardware */ - MCFG_DEFAULT_LAYOUT(layout_tec1) - - /* sound hardware */ - MCFG_SPEAKER_STANDARD_MONO("mono") - MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0) - MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) -MACHINE_CONFIG_END - -static MACHINE_CONFIG_START( tecjmon, tec1_state ) - /* basic machine hardware */ - MCFG_CPU_ADD("maincpu", Z80, XTAL_3_579545MHz / 2) - MCFG_CPU_PROGRAM_MAP(tecjmon_map) - MCFG_CPU_IO_MAP(tecjmon_io) - - /* video hardware */ - MCFG_DEFAULT_LAYOUT(layout_tec1) - - /* sound hardware */ - MCFG_SPEAKER_STANDARD_MONO("mono") - MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0) - MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) - MCFG_SOUND_WAVE_ADD(WAVE_TAG, "cassette") - MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) - - /* Devices */ - MCFG_CASSETTE_ADD( "cassette" ) -MACHINE_CONFIG_END - - -/*************************************************************************** - - Game driver - -***************************************************************************/ - -ROM_START(tec1) - ROM_REGION(0x10000, "maincpu", ROMREGION_ERASEFF) - ROM_SYSTEM_BIOS(0, "mon1", "MON1") - ROMX_LOAD("mon1.rom", 0x0000, 0x0800, CRC(b3390c36) SHA1(18aabc68d473206b7fc4e365c6b57a4e218482c3), ROM_BIOS(1)) - ROM_SYSTEM_BIOS(1, "mon1b", "MON1B") - ROMX_LOAD("mon1b.rom", 0x0000, 0x0800, CRC(60daea3c) SHA1(383b7e7f02e91fb18c87eb03c5949e31156771d4), ROM_BIOS(2)) - ROM_SYSTEM_BIOS(2, "mon2", "MON2") - ROMX_LOAD("mon2.rom", 0x0000, 0x0800, CRC(082fd7e7) SHA1(7659add30ca22b15a03d1cbac0892a5c25e47ecd), ROM_BIOS(3)) -ROM_END - -ROM_START(tecjmon) - ROM_REGION(0x10000, "maincpu", ROMREGION_ERASEFF) - ROM_LOAD("jmon.rom", 0x0000, 0x0800, CRC(202c47a2) SHA1(701588ec5640d633d90d94b2ccd6f65422e19a70) ) - ROM_LOAD("util.rom", 0x3800, 0x0800, CRC(7c19700d) SHA1(dc5b3ade66bb11c54430056966ed99cdd299d82b) ) -ROM_END - -/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME */ -COMP( 1984, tec1, 0, 0, tec1, tec1, driver_device, 0, "Talking Electronics magazine", "TEC-1" , 0 ) -COMP( 1984, tecjmon, tec1, 0, tecjmon, tec1, driver_device, 0, "Talking Electronics magazine", "TEC-1A with JMON" , 0 ) |