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Diffstat (limited to 'src/mame/drivers/pegasus.cpp')
-rw-r--r-- | src/mame/drivers/pegasus.cpp | 588 |
1 files changed, 0 insertions, 588 deletions
diff --git a/src/mame/drivers/pegasus.cpp b/src/mame/drivers/pegasus.cpp deleted file mode 100644 index e454f1afc03..00000000000 --- a/src/mame/drivers/pegasus.cpp +++ /dev/null @@ -1,588 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Robbbert -/*************************************************************************** - - Aamber Pegasus computer (New Zealand) - - http://web.mac.com/lord_philip/aamber_pegasus/Aamber_Pegasus.html - - Each copy of the monitor rom was made for an individual machine. - The early bios versions checked that it was running on that - particular computer. - - This computer has no sound. - - The usual way of loading a new rom was to plug it into the board. - We have replaced this with cartslots, to save having to recompile - whenever a new rom is found. Single rom programs will usually work in - any slot (if it is going to work at all). A working rom will appear - in the menu. Press the first letter to run it. - - If a machine language program is loaded via cassette, do it in the - Monitor (L command), when loaded press Enter, and it will be in the - menu. - - Basic cassettes are loaded in the usual way, that is, start Basic, - type LOAD, press Enter. When done, RUN or LIST as needed. - - The Aamber Pegasus uses a MCM66710P, which is functionally - equivalent to the MCM6571. - - Note that datasheet is incorrect for the number "9". - The first byte is really 0x3E rather than 0x3F, confirmed on real - hardware. - - TO DO: - - Work on the other non-working programs - -****************************************************************************/ - -#include "emu.h" - -#include "bus/generic/carts.h" -#include "bus/generic/slot.h" -#include "cpu/m6809/m6809.h" -#include "imagedev/cassette.h" -#include "machine/6821pia.h" -#include "machine/timer.h" - -#include "emupal.h" -#include "screen.h" -#include "softlist.h" -#include "speaker.h" - - -namespace { - -class pegasus_state : public driver_device -{ -public: - pegasus_state(const machine_config &mconfig, device_type type, const char *tag) - : driver_device(mconfig, type, tag) - , m_maincpu(*this, "maincpu") - , m_cass(*this, "cassette") - , m_pia_s(*this, "pia_s") - , m_pia_u(*this, "pia_u") - , m_exp_00(*this, "exp00") - , m_exp_01(*this, "exp01") - , m_exp_02(*this, "exp02") - , m_exp_0c(*this, "exp0c") - , m_exp_0d(*this, "exp0d") - , m_vram(*this, "videoram") - , m_p_chargen(*this, "chargen") - , m_io_keyboard(*this, "KEY.%u", 0U) - { } - - void pegasusm(machine_config &config); - void pegasus(machine_config &config); - - void init_pegasus(); - -protected: - virtual void machine_reset() override; - virtual void machine_start() override; - -private: - u8 pegasus_keyboard_r(); - u8 pegasus_protection_r(); - u8 pegasus_pcg_r(offs_t offset); - void pegasus_controls_w(u8 data); - void pegasus_keyboard_w(u8 data); - void pegasus_pcg_w(offs_t offset, u8 data); - DECLARE_READ_LINE_MEMBER(pegasus_keyboard_irq); - DECLARE_READ_LINE_MEMBER(pegasus_cassette_r); - DECLARE_WRITE_LINE_MEMBER(pegasus_cassette_w); - DECLARE_WRITE_LINE_MEMBER(pegasus_firq_clr); - u32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); - TIMER_DEVICE_CALLBACK_MEMBER(pegasus_firq); - image_init_result load_cart(device_image_interface &image, generic_slot_device *slot, const char *reg_tag); - DECLARE_DEVICE_IMAGE_LOAD_MEMBER(exp00_load) { return load_cart(image, m_exp_00, "0000"); } - DECLARE_DEVICE_IMAGE_LOAD_MEMBER(exp01_load) { return load_cart(image, m_exp_01, "1000"); } - DECLARE_DEVICE_IMAGE_LOAD_MEMBER(exp02_load) { return load_cart(image, m_exp_02, "2000"); } - DECLARE_DEVICE_IMAGE_LOAD_MEMBER(exp0c_load) { return load_cart(image, m_exp_0c, "c000"); } - DECLARE_DEVICE_IMAGE_LOAD_MEMBER(exp0d_load) { return load_cart(image, m_exp_0d, "d000"); } - - void pegasus_mem(address_map &map); - void pegasusm_mem(address_map &map); - - u8 m_kbd_row; - bool m_kbd_irq; - u8 m_control_bits; - std::unique_ptr<u8[]> m_pcg; - void pegasus_decrypt_rom(u8 *ROM); - required_device<cpu_device> m_maincpu; - required_device<cassette_image_device> m_cass; - required_device<pia6821_device> m_pia_s; - required_device<pia6821_device> m_pia_u; - required_device<generic_slot_device> m_exp_00; - required_device<generic_slot_device> m_exp_01; - required_device<generic_slot_device> m_exp_02; - required_device<generic_slot_device> m_exp_0c; - required_device<generic_slot_device> m_exp_0d; - required_shared_ptr<u8> m_vram; - required_region_ptr<u8> m_p_chargen; - required_ioport_array<8> m_io_keyboard; -}; - -TIMER_DEVICE_CALLBACK_MEMBER(pegasus_state::pegasus_firq) -{ - m_maincpu->set_input_line(M6809_FIRQ_LINE, HOLD_LINE); -} - -WRITE_LINE_MEMBER( pegasus_state::pegasus_firq_clr ) -{ - m_maincpu->set_input_line(M6809_FIRQ_LINE, CLEAR_LINE); -} - -u8 pegasus_state::pegasus_keyboard_r() -{ - u8 data = 0xff; - for (unsigned i = 0; i < 8; i++) - if (!BIT(m_kbd_row, i)) data &= m_io_keyboard[i]->read(); - - m_kbd_irq = (data == 0xff) ? 1 : 0; - if (BIT(m_control_bits, 3)) - data <<= 4; - return data; -} - -void pegasus_state::pegasus_keyboard_w(u8 data) -{ - m_kbd_row = data; -} - -void pegasus_state::pegasus_controls_w(u8 data) -{ -/* d0,d2 - not emulated - d0 - Blank - Video blanking - d1 - Char - select character rom or ram - d2 - Page - enables writing to video ram - d3 - Asc - Select which half of the keyboard to read -*/ - - m_control_bits = data; -} - -READ_LINE_MEMBER( pegasus_state::pegasus_keyboard_irq ) -{ - return m_kbd_irq; -} - -READ_LINE_MEMBER( pegasus_state::pegasus_cassette_r ) -{ - return m_cass->input(); -} - -WRITE_LINE_MEMBER( pegasus_state::pegasus_cassette_w ) -{ - m_cass->output(state ? 1 : -1); -} - -u8 pegasus_state::pegasus_pcg_r(offs_t offset) -{ - u8 code = m_vram[offset] & 0x7f; - return m_pcg[(code << 4) | (~m_kbd_row & 15)]; -} - -void pegasus_state::pegasus_pcg_w(offs_t offset, u8 data) -{ -// if (BIT(m_control_bits, 1)) - { - u8 code = m_vram[offset] & 0x7f; - m_pcg[(code << 4) | (~m_kbd_row & 15)] = data; - } -} - -/* Must return the A register except when it is doing a rom search */ -u8 pegasus_state::pegasus_protection_r() -{ - u8 data = m_maincpu->state_int(M6809_A); - if (data == 0x20) data = 0xff; - return data; -} - -void pegasus_state::pegasus_mem(address_map &map) -{ - map.unmap_value_high(); - //map(0x0000, 0x2fff) // mapped by the cartslots 1-3 - map(0xb000, 0xbdff).ram(); - map(0xbe00, 0xbfff).ram().share("videoram"); - //map(0xc000, 0xdfff) // mapped by the cartslots 4-5 - map(0xe000, 0xe1ff).r(FUNC(pegasus_state::pegasus_protection_r)); - map(0xe200, 0xe3ff).rw(FUNC(pegasus_state::pegasus_pcg_r), FUNC(pegasus_state::pegasus_pcg_w)); - map(0xe400, 0xe403).mirror(0x1fc).rw(m_pia_u, FUNC(pia6821_device::read), FUNC(pia6821_device::write)); - map(0xe600, 0xe603).mirror(0x1fc).rw(m_pia_s, FUNC(pia6821_device::read), FUNC(pia6821_device::write)); - map(0xf000, 0xffff).rom().region("maincpu", 0); -} - -void pegasus_state::pegasusm_mem(address_map &map) -{ - map.unmap_value_high(); - pegasus_mem(map); - map(0x5000, 0xafff).ram(); -} - -/* Input ports */ -static INPUT_PORTS_START( pegasus ) - PORT_START("KEY.0") - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("= +") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+') - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("0 )") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')') - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BackSpace") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) PORT_CHAR(8) - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Break") PORT_CODE(KEYCODE_NUMLOCK) PORT_CHAR(20) - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("\\ |") PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|') - PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("; :") PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':') - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("L") PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR('l') PORT_CHAR(13) - PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("P") PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR('p') PORT_CHAR(16) - - PORT_START("KEY.1") - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("- _") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_') - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Tab") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR('(') - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("[ ]") PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR(']') - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Delete") PORT_CODE(KEYCODE_DEL) PORT_CHAR(127) PORT_CHAR('_') - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("\' \"") PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('\'') PORT_CHAR('"') - PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("I") PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('i') PORT_CHAR(9) - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("K") PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR('k') PORT_CHAR(11) - PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("O") PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR('o') PORT_CHAR(15) - - PORT_START("KEY.2") - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("5 %") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("8 *") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('*') - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("6 ^") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('^') - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("` ~") PORT_CODE(KEYCODE_TILDE) PORT_CHAR('`') PORT_CHAR('~') - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("/ ?") PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?') - PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("J") PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('j') PORT_CHAR(10) - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("U") PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_CHAR('u') PORT_CHAR(21) - PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("G") PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_CHAR('g') PORT_CHAR(7) - - PORT_START("KEY.3") - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("T") PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_CHAR('t') PORT_CHAR(20) - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("7 &") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&') - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("4 $") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNUSED ) // outputs a space - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("ShiftR") PORT_NAME("ShiftR") PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) - PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(". >") PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>') - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("H") PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_CHAR('h') PORT_CHAR(8) - PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Y") PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_CHAR('y') PORT_CHAR(25) - - PORT_START("KEY.4") - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("R") PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_CHAR('r') PORT_CHAR(18) - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("W") PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_CHAR('w') PORT_CHAR(23) - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("2") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@') - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("3") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED ) // outputs a space - PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(", <") PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<') - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR('c') PORT_CHAR(3) - PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_CHAR('f') PORT_CHAR(6) - - PORT_START("KEY.5") - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_CHAR('e') PORT_CHAR(5) - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Q") PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_CHAR('q') PORT_CHAR(17) - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED ) // REPEAT key which is disconnected - outputs a space - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("1 !") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("LineFeed") PORT_CODE(KEYCODE_ENTER_PAD) PORT_CHAR(10) - PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("M") PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR('m') PORT_CHAR(13) - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHAR('d') PORT_CHAR(4) - PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("N") PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR('n') PORT_CHAR(14) - - PORT_START("KEY.6") - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("V") PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR('v') PORT_CHAR(22) - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_CHAR('a') PORT_CHAR(1) - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Tab") PORT_CODE(KEYCODE_TAB) PORT_CHAR(9) - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Esc") PORT_CODE(KEYCODE_ESC) PORT_CHAR(27) - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Space") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') - PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("X") PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR('x') PORT_CHAR(24) - PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BlankL") PORT_CODE(KEYCODE_0_PAD) PORT_CHAR(16) - - PORT_START("KEY.7") - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHAR('b') PORT_CHAR(2) - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("S") PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_CHAR('s') PORT_CHAR(19) - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CapsLock") PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(19) - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_SHIFT_2) - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("ShiftL") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1) - PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BlankR") PORT_CODE(KEYCODE_DEL_PAD) PORT_CHAR(21) - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Z") PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR('z') PORT_CHAR(26) - PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("{ }") PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('{') PORT_CHAR('}') -INPUT_PORTS_END - -static const u8 mcm6571a_shift[] = -{ - 0,1,1,0,0,0,1,0,0,0,0,1,0,0,0,0, - 1,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0, - 0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0, - 0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0, - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, - 0,0,0,0,0,0,0,1,0,0,1,0,0,0,0,0, - 1,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0 -}; - - -u32 pegasus_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) -{ - u16 sy=0, ma=0; - const bool pcg_mode = BIT(m_control_bits, 1); - - for (u8 y = 0; y < 16; y++) - { - for (u8 ra = 0; ra < 16; ra++) - { - u16 *p = &bitmap.pix(sy++); - - for (u16 x = ma; x < ma + 32; x++) - { - u8 inv = 0xff; - u8 chr = m_vram[x]; - - if (BIT(chr, 7)) - { - inv = 0; - chr &= 0x7f; - } - - u8 gfx; - if (pcg_mode) - { - gfx = m_pcg[(chr << 4) | ra] ^ inv; - } - else if (mcm6571a_shift[chr]) - { - if (ra < 3) - gfx = inv; - else - gfx = m_p_chargen[(chr<<4) | (ra-3) ] ^ inv; - } - else - { - if (ra < 10) - gfx = m_p_chargen[(chr<<4) | ra ] ^ inv; - else - gfx = inv; - } - - /* Display a scanline of a character */ - *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+=32; - } - return 0; -} - -/* F4 Character Displayer */ -static const gfx_layout pegasus_charlayout = -{ - 8, 16, // text = 7 x 9, pcg = 8 x 16 - 128, // 128 characters - 1, // 1 bits per pixel - { 0 }, // no bitplanes - // x offsets - { 0, 1, 2, 3, 4, 5, 6, 7 }, - // y offsets - { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 }, - 8*16 // every char takes 16 bytes -}; - -static GFXDECODE_START( gfx_pegasus ) - GFXDECODE_ENTRY( "chargen", 0x0000, pegasus_charlayout, 0, 1 ) - //GFXDECODE_ENTRY( "pcg", 0x0000, pegasus_charlayout, 0, 1 ) -GFXDECODE_END - - -// An encrypted single rom starts with 02, decrypted with 20. -// The 2nd and 3rd part of a multi-rom set will have no obvious byte, -// so we check the first 4 bytes for a signature, and decrypt if found. -void pegasus_state::pegasus_decrypt_rom(u8 *ROM) -{ - bool doit = false; - - if (ROM[0] == 0x02) doit = true; - if (ROM[0] == 0x1e && ROM[1] == 0xfa && ROM[2] == 0x60 && ROM[3] == 0x71) doit = true; // xbasic 2nd rom - if (ROM[0] == 0x72 && ROM[1] == 0x62 && ROM[2] == 0xc6 && ROM[3] == 0x36) doit = true; // xbasic 3rd rom - if (ROM[0] == 0xf0 && ROM[1] == 0x40 && ROM[2] == 0xce && ROM[3] == 0x80) doit = true; // forth 2nd rom (both sets) - if (ROM[0] == 0x80 && ROM[1] == 0x06 && ROM[2] == 0x68 && ROM[3] == 0x14) doit = true; // pascal 2nd rom - - if (doit) - { - std::vector<u8> temp_copy; - temp_copy.resize(0x1000); - for (int i = 0; i < 0x1000; i++) - { - const u16 j = bitswap<16>(i, 15, 14, 13, 12, 11, 10, 9, 8, 0, 1, 2, 3, 4, 5, 6, 7); - const u8 b = bitswap<8>(ROM[i], 3, 2, 1, 0, 7, 6, 5, 4); - temp_copy[j & 0xfff] = b; - } - memcpy(ROM, &temp_copy[0], 0x1000); - } -} - -image_init_result pegasus_state::load_cart(device_image_interface &image, generic_slot_device *slot, const char *reg_tag) -{ - u32 size = slot->common_get_size(reg_tag); - bool any_socket = false; - - if (size > 0x1000) - { - image.seterror(image_error::INVALIDIMAGE, "Unsupported cartridge size"); - return image_init_result::FAIL; - } - - if (image.loaded_through_softlist() && size == 0) - { - // we might be loading a cart compatible with all sockets! - // so try to get region "rom" - size = slot->common_get_size("rom"); - any_socket = true; - - if (size == 0) - { - std::string errmsg = string_format( - "Attempted to load a file that does not work in this socket.\n" - "Please check \"Usage\" field in the software list for the correct socket(s) to use."); - image.seterror(image_error::INVALIDIMAGE, errmsg.c_str()); - return image_init_result::FAIL; - } - } - - slot->rom_alloc(0x1000, GENERIC_ROM8_WIDTH, ENDIANNESS_LITTLE); // we alloc 0x1000 also for smaller roms! - slot->common_load_rom(slot->get_rom_base(), size, any_socket ? "rom" : reg_tag); - - // raw images have to be decrypted (in particular the ones from softlist) - pegasus_decrypt_rom(slot->get_rom_base()); - - return image_init_result::PASS; -} - -void pegasus_state::machine_start() -{ - if (m_exp_00->exists()) - m_maincpu->space(AS_PROGRAM).install_read_handler(0x0000, 0x0fff, read8sm_delegate(*m_exp_00, FUNC(generic_slot_device::read_rom))); - if (m_exp_01->exists()) - m_maincpu->space(AS_PROGRAM).install_read_handler(0x1000, 0x1fff, read8sm_delegate(*m_exp_01, FUNC(generic_slot_device::read_rom))); - if (m_exp_02->exists()) - m_maincpu->space(AS_PROGRAM).install_read_handler(0x2000, 0x2fff, read8sm_delegate(*m_exp_02, FUNC(generic_slot_device::read_rom))); - if (m_exp_0c->exists()) - m_maincpu->space(AS_PROGRAM).install_read_handler(0xc000, 0xcfff, read8sm_delegate(*m_exp_0c, FUNC(generic_slot_device::read_rom))); - if (m_exp_0d->exists()) - m_maincpu->space(AS_PROGRAM).install_read_handler(0xd000, 0xdfff, read8sm_delegate(*m_exp_0d, FUNC(generic_slot_device::read_rom))); - m_pcg = make_unique_clear<u8[]>(0x0800); - save_pointer(NAME(m_pcg), 0x0800); - save_item(NAME(m_kbd_row)); - save_item(NAME(m_kbd_irq)); - save_item(NAME(m_control_bits)); -} - -void pegasus_state::machine_reset() -{ - m_kbd_row = 0; - m_kbd_irq = 1; - m_control_bits = 0; -} - -void pegasus_state::init_pegasus() -{ - // decrypt monitor - u8 *base = memregion("maincpu")->base(); - pegasus_decrypt_rom(base); -} - -void pegasus_state::pegasus(machine_config &config) -{ - /* basic machine hardware */ - MC6809(config, m_maincpu, XTAL(4'000'000)); // actually a 6809C - 4MHZ clock coming in, 1MHZ internally - m_maincpu->set_addrmap(AS_PROGRAM, &pegasus_state::pegasus_mem); - - TIMER(config, "pegasus_firq").configure_periodic(FUNC(pegasus_state::pegasus_firq), attotime::from_hz(400)); - - /* 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_screen_update(FUNC(pegasus_state::screen_update)); - screen.set_size(32*8, 16*16); - screen.set_visarea(0, 32*8-1, 0, 16*16-1); - screen.set_palette("palette"); - GFXDECODE(config, "gfxdecode", "palette", gfx_pegasus); - PALETTE(config, "palette", palette_device::MONOCHROME); - - /* sound hardware */ - SPEAKER(config, "mono").front_center(); - - /* devices */ - PIA6821(config, m_pia_s, 0); - m_pia_s->readpb_handler().set(FUNC(pegasus_state::pegasus_keyboard_r)); - m_pia_s->readca1_handler().set(FUNC(pegasus_state::pegasus_cassette_r)); - m_pia_s->readcb1_handler().set(FUNC(pegasus_state::pegasus_keyboard_irq)); - m_pia_s->writepa_handler().set(FUNC(pegasus_state::pegasus_keyboard_w)); - m_pia_s->writepb_handler().set(FUNC(pegasus_state::pegasus_controls_w)); - m_pia_s->ca2_handler().set(FUNC(pegasus_state::pegasus_cassette_w)); - m_pia_s->cb2_handler().set(FUNC(pegasus_state::pegasus_firq_clr)); - m_pia_s->irqa_handler().set_inputline("maincpu", M6809_IRQ_LINE); - m_pia_s->irqb_handler().set_inputline("maincpu", M6809_IRQ_LINE); - - PIA6821(config, m_pia_u, 0); - m_pia_u->irqa_handler().set_inputline("maincpu", M6809_IRQ_LINE); - m_pia_u->irqb_handler().set_inputline("maincpu", M6809_IRQ_LINE); - - GENERIC_SOCKET(config, "exp00", generic_plain_slot, "pegasus_cart").set_device_load(FUNC(pegasus_state::exp00_load)); - GENERIC_SOCKET(config, "exp01", generic_plain_slot, "pegasus_cart").set_device_load(FUNC(pegasus_state::exp01_load)); - GENERIC_SOCKET(config, "exp02", generic_plain_slot, "pegasus_cart").set_device_load(FUNC(pegasus_state::exp02_load)); - GENERIC_SOCKET(config, "exp0c", generic_plain_slot, "pegasus_cart").set_device_load(FUNC(pegasus_state::exp0c_load)); - GENERIC_SOCKET(config, "exp0d", generic_plain_slot, "pegasus_cart").set_device_load(FUNC(pegasus_state::exp0d_load)); - - CASSETTE(config, m_cass); - m_cass->set_default_state(CASSETTE_STOPPED|CASSETTE_MOTOR_ENABLED); - m_cass->add_route(ALL_OUTPUTS, "mono", 0.05); - - /* Software lists */ - SOFTWARE_LIST(config, "cart_list").set_original("pegasus_cart"); -} - -void pegasus_state::pegasusm(machine_config &config) -{ - pegasus(config); - m_maincpu->set_addrmap(AS_PROGRAM, &pegasus_state::pegasusm_mem); -} - - -/* ROM definition */ -ROM_START( pegasus ) - ROM_REGION( 0x1000, "maincpu", ROMREGION_ERASEFF ) - ROM_SYSTEM_BIOS(0, "11r2674", "Monitor 1.1 r2674") - ROMX_LOAD( "mon11_2674.bin", 0x0000, 0x1000, CRC(1640ff7e) SHA1(8199643749fb40fb8be05e9f311c75620ca939b1), ROM_BIOS(0) ) - ROM_SYSTEM_BIOS(1, "10r2569", "Monitor 1.0 r2569") - ROMX_LOAD( "mon10_2569.bin", 0x0000, 0x1000, CRC(910fc930) SHA1(a4f6bbe5def0268cc49ee7045616a39017dd8052), ROM_BIOS(1) ) - ROM_SYSTEM_BIOS(2, "11r2569", "Monitor 1.1 r2569") - ROMX_LOAD( "mon11_2569.bin", 0x0000, 0x1000, CRC(07b92002) SHA1(3c434601120870c888944ecd9ade5186432ddbc2), ROM_BIOS(2) ) - ROM_SYSTEM_BIOS(3, "11r2669", "Monitor 1.1 r2669") - ROMX_LOAD( "mon11_2669.bin", 0x0000, 0x1000, CRC(f3ee23c8) SHA1(3ac96935668f5e53799c90db5140393c2ef9ce36), ROM_BIOS(3) ) - ROM_SYSTEM_BIOS(4, "22r2856", "Monitor 2.2 r2856") - ROMX_LOAD( "mon22_2856.bin", 0x0000, 0x1000, CRC(5f5f688a) SHA1(3719eecc347e158dd027ea7aa8a068cdafc00d9b), ROM_BIOS(4) ) - ROM_SYSTEM_BIOS(5, "22br2856", "Monitor 2.2B r2856") - ROMX_LOAD( "mon22b_2856.bin", 0x0000, 0x1000, CRC(a47b0308) SHA1(f215e51aa8df6aed99c10f3df6a3589cb9f63d46), ROM_BIOS(5) ) - ROM_SYSTEM_BIOS(6, "23r2601", "Monitor 2.3 r2601") - ROMX_LOAD( "mon23_2601.bin", 0x0000, 0x1000, CRC(0e024222) SHA1(9950cba08996931b9d5a3368b44c7309638b4e08), ROM_BIOS(6) ) - ROM_SYSTEM_BIOS(7, "23ar2569", "Monitor 2.3A r2569") - ROMX_LOAD( "mon23a_2569.bin", 0x0000, 0x1000, CRC(248e62c9) SHA1(adbde27e69b38b29ff89bacf28d0240a8e5d90f3), ROM_BIOS(7) ) - - ROM_REGION( 0x0800, "chargen", 0 ) - ROM_LOAD( "6571.bin", 0x0000, 0x0800, CRC(5a25144b) SHA1(7b9fee0c8ef2605b85d12b6d9fe8feb82418c63a) ) -ROM_END - -#define rom_pegasusm rom_pegasus - -} // anonymous namespace - - -/* Driver */ - -// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS -COMP( 1981, pegasus, 0, 0, pegasus, pegasus, pegasus_state, init_pegasus, "Technosys", "Aamber Pegasus", MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE ) -COMP( 1981, pegasusm, pegasus, 0, pegasusm, pegasus, pegasus_state, init_pegasus, "Technosys", "Aamber Pegasus with RAM expansion unit", MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE ) |