// license:BSD-3-Clause // copyright-holders:Miodrag Milanovic, Robbbert /****************************************************************************** LLC1 driver by Miodrag Milanovic 2009-04-17 Preliminary driver. 2012-07-?? Updates by Robbbert Handy addresses: (Press X then the 4 digits then Enter) 0800 = BASIC cold start 0803 = BASIC warm start 13BE = display Monitor logo This machine has an 8-digit LED display with hex keyboard, and also a 64x16 monochrome screen with full keyboard. The monitor uses the hex keyboard, while Basic uses the full keyboard. Monitor output is on the digits, but the single-step command displays a running register dump on the main screen. There are no storage facilities, and no sound. BASIC is integer only (-32768 to 32767), about 6k of space, and all input is to be in uppercase. It does have minimal string capability, but there is no $ sign, so how to create a string variable is unknown. To exit back to the monitor, type BYE. The user instructions of the monitor (in German) are here: http://www.jens-mueller.org/jkcemu/llc1.html ToDo: - Get good dump of monitor rom, has one known bad byte, possibly more. - In Basic, when it first scrolls, the start of the line shifts a character to the right. Unknown if a bug or a bad byte. (patched) *******************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" #include "machine/z80daisy.h" #include "machine/z80ctc.h" #include "machine/z80pio.h" #include "machine/keyboard.h" #include "emupal.h" #include "screen.h" #include "llc1.lh" class llc1_state : public driver_device { public: llc1_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_ctc(*this, "ctc") , m_p_chargen(*this, "chargen") , m_vram(*this, "videoram") , m_digits(*this, "digit%u", 0U) { } void llc1(machine_config &config); DECLARE_INPUT_CHANGED_MEMBER(z3_button); private: void machine_start() override; void machine_reset() override; void kbd_put(u8 data); u8 port1a_r(); u8 port2a_r(); u8 port2b_r(); void port1a_w(u8 data); void port1b_w(u8 data); u32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); void io_map(address_map &map); void mem_map(address_map &map); u8 m_porta; u8 m_term_data; required_device m_maincpu; required_device m_ctc; required_region_ptr m_p_chargen; required_shared_ptr m_vram; output_finder<8> m_digits; }; /* Address maps */ void llc1_state::mem_map(address_map &map) { map(0x0000, 0x07ff).rom(); // Monitor ROM map(0x0800, 0x13ff).rom(); // BASIC ROM map(0x1400, 0x1bff).ram(); // RAM map(0x1c00, 0x1fff).ram().share("videoram"); // Video RAM } void llc1_state::io_map(address_map &map) { map.global_mask(0xff); map.unmap_value_high(); map(0xEC, 0xEF).rw("pio2", FUNC(z80pio_device::read), FUNC(z80pio_device::write)); map(0xF4, 0xF7).rw("pio1", FUNC(z80pio_device::read), FUNC(z80pio_device::write)); map(0xF8, 0xFB).rw(m_ctc, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); } /* Input ports */ static INPUT_PORTS_START( llc1 ) PORT_START("X4") // out F4,BF PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("1") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("2") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("3") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_START("X5") // out F4,DF PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("4") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("5") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("6") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("7") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("REG") PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("M (Mem)") PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("ST (Start)") PORT_CODE(KEYCODE_ENTER) PORT_CHAR('^') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("DF (Reset)") PORT_CODE(KEYCODE_ESC) PORT_CHAR(27) PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_START("X6") // out F4,EF PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("8") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("9") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("ES (Step)") PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("DL (Go)") PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("HP (BP)") PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHANGED_MEMBER(DEVICE_SELF, llc1_state, z3_button, 0) PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_UNUSED) // does nothing INPUT_PORTS_END INPUT_CHANGED_MEMBER(llc1_state::z3_button) { m_ctc->trg3(newval); } void llc1_state::kbd_put(u8 data) { static constexpr u8 s1[16]={0x40, 0x1e, 0x12, 0x1b, 0x19, 0x14, 0x15, 0x1d, 0x16, 0x17, 0x1c, 0x3c, 0x3f, 0x3d, 0x3e, 0x10}; // 0x20 to 0x2F static constexpr u8 s2[7] ={0x1a, 0x11, 0x7c, 0x13, 0x7b, 0x1f, 0x00}; // 0x3A to 0x40 static constexpr u8 s3[6] ={0x5c, 0x00, 0x5b, 0x7e, 0x00, 0x5e}; // 0x5B to 0x60 m_term_data = data; if ((data >= 0x20) && (data <= 0x2f)) m_term_data = s1[data-0x20]; else if ((data >= 0x3a) && (data <= 0x40)) m_term_data = s2[data-0x3a]; else if ((data >= 0x5b) && (data <= 0x60)) m_term_data = s3[data-0x5b]; else if (data >= 0x7b) m_term_data = 0; if (m_term_data) m_term_data |= 0x80; } // LLC1 BASIC keyboard u8 llc1_state::port2b_r() { if (BIT(m_term_data, 7)) { m_term_data &= 0x7f; return 0xff; } else return m_term_data; } u8 llc1_state::port2a_r() { return 0; } // LLC1 Monitor keyboard u8 llc1_state::port1a_r() { u8 data = 0; if (!BIT(m_porta, 4)) data = ioport("X4")->read(); if (!BIT(m_porta, 5)) data = ioport("X5")->read(); if (!BIT(m_porta, 6)) data = ioport("X6")->read(); if (data & 0xf0) data = (data >> 4) | 0x80; return data; } void llc1_state::port1a_w(u8 data) { m_porta = data; } void llc1_state::port1b_w(u8 data) { static u8 count = 0, digit = 0; if (data == 0) { digit = 0; count = 0; } else count++; if (count == 1) { if (digit < 8) m_digits[digit] = data & 0x7f; } else if (count == 3) { count = 0; digit++; } } void llc1_state::machine_reset() { m_term_data = 0; } void llc1_state::machine_start() { m_digits.resolve(); save_item(NAME(m_porta)); save_item(NAME(m_term_data)); } u32 llc1_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { u8 y,ra,chr,gfx,inv; u16 sy=0,ma=0,x; for (y = 0; y < 16; y++) { for (ra = 0; ra < 8; ra++) { u16 *p = &bitmap.pix16(sy++); for (x = ma; x < ma + 64; x++) { inv = (m_vram[x] & 0x80) ? 0xff : 0; chr = m_vram[x] & 0x7f; /* get pattern of pixels for that character scanline */ gfx = m_p_chargen[ chr | (ra << 7) ] ^ inv; /* Display a scanline of a character (8 pixels) */ *p++ = BIT(gfx, 7); *p++ = BIT(gfx, 6); *p++ = BIT(gfx, 5); *p++ = BIT(gfx, 4); *p++ = BIT(gfx, 3); *p++ = BIT(gfx, 2); *p++ = BIT(gfx, 1); *p++ = BIT(gfx, 0); } } ma+=64; } return 0; } static const z80_daisy_config daisy_chain[] = { { "pio2" }, { "ctc" }, { nullptr } }; /* F4 Character Displayer */ static const gfx_layout charlayout = { 8, 8, /* 8 x 8 characters */ 128, /* 128 characters */ 1, /* 1 bits per pixel */ { 0 }, /* no bitplanes */ /* x offsets */ { 0, 1, 2, 3, 4, 5, 6, 7 }, /* y offsets */ { 0, 1*128*8, 2*128*8, 3*128*8, 4*128*8, 5*128*8, 6*128*8, 7*128*8 }, 8 /* every char takes 8 x 1 bytes */ }; static GFXDECODE_START( gfx_llc1 ) GFXDECODE_ENTRY( "chargen", 0x0000, charlayout, 0, 1 ) GFXDECODE_END /* Machine driver */ void llc1_state::llc1(machine_config &config) { /* basic machine hardware */ Z80(config, m_maincpu, XTAL(2'000'000)); m_maincpu->set_daisy_config(daisy_chain); m_maincpu->set_addrmap(AS_PROGRAM, &llc1_state::mem_map); m_maincpu->set_addrmap(AS_IO, &llc1_state::io_map); /* video hardware */ screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); screen.set_refresh_hz(50); screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */ screen.set_size(64*8, 16*8); screen.set_visarea(0, 64*8-1, 0, 16*8-1); screen.set_screen_update(FUNC(llc1_state::screen_update)); screen.set_palette("palette"); GFXDECODE(config, "gfxdecode", "palette", gfx_llc1); PALETTE(config, "palette", palette_device::MONOCHROME); config.set_default_layout(layout_llc1); z80pio_device& pio1(Z80PIO(config, "pio1", XTAL(2'000'000))); pio1.in_pa_callback().set(FUNC(llc1_state::port1a_r)); pio1.out_pa_callback().set(FUNC(llc1_state::port1a_w)); pio1.out_pb_callback().set(FUNC(llc1_state::port1b_w)); z80pio_device& pio2(Z80PIO(config, "pio2", XTAL(2'000'000))); pio2.out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); pio2.in_pa_callback().set(FUNC(llc1_state::port2a_r)); pio2.in_pb_callback().set(FUNC(llc1_state::port2b_r)); Z80CTC(config, m_ctc, XTAL(2'000'000)); // timer 0 irq does digit display // timer 3 is kicked off by a key press, and scans the monitor keyboard. m_ctc->intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); m_ctc->zc_callback<0>().set(m_ctc, FUNC(z80ctc_device::trg1)); m_ctc->zc_callback<1>().set(m_ctc, FUNC(z80ctc_device::trg2)); generic_keyboard_device &keyboard(GENERIC_KEYBOARD(config, "keyboard", 0)); keyboard.set_keyboard_callback(FUNC(llc1_state::kbd_put)); } /* ROM definition */ ROM_START( llc1 ) ROM_REGION( 0x1400, "maincpu", 0 ) //ROM_LOAD( "llc1-monitor.rom", 0x0000, 0x0800, BAD_DUMP CRC(0e81378d) SHA1(0fbb6eca016d0f439ea1c9aa0cb0affb5f49ea69) ) ROM_LOAD( "llc1mon.bin", 0x0000, 0x0800, BAD_DUMP CRC(e291dd63) SHA1(31a71bef84f7c164a270d0895cb645e078e9c6f2) ) ROM_LOAD( "llc1_tb1.bin", 0x0800, 0x0400, CRC(0d9d4039) SHA1(b515e385af57f4faf3a9f7b4a1edd59a1c1ea260) ) ROM_LOAD( "llc1_tb2.bin", 0x0c00, 0x0400, CRC(28bfea2a) SHA1(a68a8b87bfc931627ddd8d124b153e511477fbaf) ) ROM_LOAD( "llc1_tb3.bin", 0x1000, 0x0400, CRC(fe5e3132) SHA1(cc3b191e41f5772a4b86b8eb0ebe6fce67872df6) ) ROM_FILL(0x02dc, 1, 0x0f) // fix display of AF in the reg command (confirmed from monitor listing) ROM_FILL(0x1361, 1, 0x40) // fix scrolling in Basic ROM_REGION( 0x0400, "chargen", 0 ) ROM_LOAD ("llc1_zg.bin", 0x0000, 0x0400, CRC(fa2cd659) SHA1(1fa5f9992f35929f656c4ce55ed6980c5da1772b) ) ROM_END /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ COMP( 1984, llc1, 0, 0, llc1, llc1, llc1_state, empty_init, "SCCH", "LLC-1", MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE )