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-rw-r--r--src/mame/drivers/vixen.cpp780
1 files changed, 0 insertions, 780 deletions
diff --git a/src/mame/drivers/vixen.cpp b/src/mame/drivers/vixen.cpp
deleted file mode 100644
index 5eb10c304ae..00000000000
--- a/src/mame/drivers/vixen.cpp
+++ /dev/null
@@ -1,780 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:Curt Coder, Robbbert
-/*
-
-Osborne 4 Vixen
-
-Main PCB Layout
----------------
-
-TODO
-
-Notes:
- Relevant IC's shown.
-
- CPU - Zilog Z8400APS Z80A CPU
- FDC - SMC FDC1797
- 8155 - Intel P8155H
- ROM0 -
- ROM1,2 - AMD AM2732-1DC 4Kx8 EPROM
- CN1 - keyboard connector
- CN2 -
- CN3 -
- CN4 - floppy connector
- CN5 - power connector
- CN6 - composite video connector
- SW1 - reset switch
- SW2 -
-
-
-I/O PCB Layout
---------------
-
-TODO
-
-Notes:
- Relevant IC's shown.
-
- 8155 - Intel P8155H
- 8251 - AMD P8251A
- CN1 - IEEE488 connector
- CN2 - RS232 connector
- CN3 -
-
-*/
-
-/*
-
- TODO:
-
- - RS232 RI interrupt
- - PCB layouts
-
-*/
-
-
-#include "emu.h"
-#include "includes/vixen.h"
-
-#include "screen.h"
-#include "softlist.h"
-#include "speaker.h"
-
-
-//**************************************************************************
-// INTERRUPTS
-//**************************************************************************
-
-void vixen_state::update_interrupt()
-{
- int state = (m_cmd_d1 && m_fdint) || m_vsync;// || (!m_enb_srq_int && !m_srq) || (!m_enb_atn_int && !m_atn) || (!m_enb_xmt_int && m_txrdy) || (!m_enb_rcv_int && m_rxrdy);
-
- m_maincpu->set_input_line(INPUT_LINE_IRQ0, state ? ASSERT_LINE : CLEAR_LINE);
-}
-
-
-READ8_MEMBER( vixen_state::opram_r )
-{
- if (!machine().side_effects_disabled())
- membank("bank3")->set_entry(0); // read videoram
- return m_program->read_byte(offset);
-}
-
-READ8_MEMBER( vixen_state::oprom_r )
-{
- if (!machine().side_effects_disabled())
- membank("bank3")->set_entry(1); // read rom
- return m_rom[offset];
-}
-
-READ8_MEMBER( vixen_state::status_r )
-{
- /*
-
- bit description
-
- 0 VSYNC enable
- 1 FDINT enable
- 2 VSYNC
- 3 1
- 4 1
- 5 1
- 6 1
- 7 1
-
- */
-
- uint8_t data = 0xf8;
-
- // vertical sync interrupt enable
- data |= m_cmd_d0;
-
- // floppy interrupt enable
- data |= m_cmd_d1 << 1;
-
- // vertical sync
- data |= m_vsync << 2;
-
- return data;
-}
-
-WRITE8_MEMBER( vixen_state::cmd_w )
-{
- /*
-
- bit description
-
- 0 VSYNC enable
- 1 FDINT enable
- 2
- 3
- 4
- 5
- 6
- 7
-
- */
-
-// logerror("CMD %u\n", data);
-
- // vertical sync interrupt enable
- m_cmd_d0 = BIT(data, 0);
-
- if (!m_cmd_d0)
- {
- // clear vertical sync
- m_vsync = 0;
- }
-
- // floppy interrupt enable
- m_cmd_d1 = BIT(data, 1);
-
- update_interrupt();
-}
-
-READ8_MEMBER( vixen_state::ieee488_r )
-{
- /*
-
- bit description
-
- 0 ATN
- 1 DAV
- 2 NDAC
- 3 NRFD
- 4 EOI
- 5 SRQ
- 6 IFC
- 7 REN
-
- */
-
- uint8_t data = 0;
-
- /* attention */
- data |= m_ieee488->atn_r();
-
- /* data valid */
- data |= m_ieee488->dav_r() << 1;
-
- /* data not accepted */
- data |= m_ieee488->ndac_r() << 2;
-
- /* not ready for data */
- data |= m_ieee488->nrfd_r() << 3;
-
- /* end or identify */
- data |= m_ieee488->eoi_r() << 4;
-
- /* service request */
- data |= m_ieee488->srq_r() << 5;
-
- /* interface clear */
- data |= m_ieee488->ifc_r() << 6;
-
- /* remote enable */
- data |= m_ieee488->ren_r() << 7;
-
- return data;
-}
-
-
-//-------------------------------------------------
-// port3_r - serial status read
-//-------------------------------------------------
-
-READ8_MEMBER( vixen_state::port3_r )
-{
- /*
-
- bit description
-
- 0 RI
- 1 DCD
- 2 1
- 3 1
- 4 1
- 5 1
- 6 1
- 7 1
-
- */
-
- uint8_t data = 0xfc;
-
- // ring indicator
- data |= m_rs232->ri_r();
-
- // data carrier detect
- data |= m_rs232->dcd_r() << 1;
-
- return data;
-}
-
-
-
-//**************************************************************************
-// ADDRESS MAPS
-//**************************************************************************
-
-// when M1 is inactive: read and write of data
-void vixen_state::vixen_mem(address_map &map)
-{
- map.unmap_value_high();
- map(0x0000, 0xefff).ram();
- map(0xf000, 0xffff).bankr("bank3").bankw("bank4").share("video_ram");
-}
-
-// when M1 is active: read opcodes
-void vixen_state::bios_mem(address_map &map)
-{
- map.unmap_value_high();
- map(0x0000, 0xefff).r(FUNC(vixen_state::opram_r));
- map(0xf000, 0xffff).r(FUNC(vixen_state::oprom_r));
-}
-
-void vixen_state::vixen_io(address_map &map)
-{
- map.unmap_value_high();
- map.global_mask(0xff);
- map(0x00, 0x03).rw(m_fdc, FUNC(fd1797_device::read), FUNC(fd1797_device::write));
- map(0x04, 0x04).mirror(0x03).rw(FUNC(vixen_state::status_r), FUNC(vixen_state::cmd_w));
- map(0x08, 0x08).mirror(0x01).rw(P8155H_TAG, FUNC(i8155_device::data_r), FUNC(i8155_device::data_w));
- map(0x0c, 0x0d).w(P8155H_TAG, FUNC(i8155_device::ale_w));
- map(0x10, 0x10).mirror(0x07).r(m_ieee488, FUNC(ieee488_device::dio_r));
- map(0x18, 0x18).mirror(0x07).r(FUNC(vixen_state::ieee488_r));
- map(0x20, 0x21).mirror(0x04).w(m_io_i8155, FUNC(i8155_device::ale_w));
- map(0x28, 0x28).mirror(0x05).rw(m_io_i8155, FUNC(i8155_device::data_r), FUNC(i8155_device::data_w));
- map(0x30, 0x31).mirror(0x06).rw(m_usart, FUNC(i8251_device::read), FUNC(i8251_device::write));
- map(0x38, 0x38).mirror(0x07).r(FUNC(vixen_state::port3_r));
-// map(0xf0, 0xff) Hard Disk?
-}
-
-
-
-//**************************************************************************
-// INPUT PORTS
-//**************************************************************************
-
-INPUT_PORTS_START( vixen )
- PORT_START("KEY.0")
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("ESC") PORT_CODE(KEYCODE_ESC) PORT_CHAR(0x1B)
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_TAB) PORT_CHAR(0x09)
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_SHIFT_2)
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("LOCK") PORT_CODE(KEYCODE_CAPSLOCK) PORT_TOGGLE
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ENTER) PORT_CHAR(0x0D)
- PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(0x27) PORT_CHAR(0x22)
- PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR(']')
-
- PORT_START("KEY.1")
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@')
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('^')
- PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&')
- PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('*')
-
- PORT_START("KEY.2")
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Q") PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_CHAR('q') PORT_CHAR(0x11)
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("W") PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_CHAR('w') PORT_CHAR(0x17)
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_CHAR('e') PORT_CHAR(0x05)
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("R") PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_CHAR('r') PORT_CHAR(0x12)
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("T") PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_CHAR('t') PORT_CHAR(0x14)
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Y") PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_CHAR('y') PORT_CHAR(0x19)
- PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("U") PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_CHAR('u') PORT_CHAR(0x15)
- PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("I") PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('i') PORT_CHAR(0x09)
-
- PORT_START("KEY.3")
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_CHAR('a') PORT_CHAR(0x01)
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("S") PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_CHAR('s') PORT_CHAR(0x13)
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHAR('d') PORT_CHAR(0x04)
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_CHAR('f') PORT_CHAR(0x06)
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("G") PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_CHAR('g') PORT_CHAR(0x07)
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("H") PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_CHAR('h') PORT_CHAR(0x08)
- PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("J") PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('j') PORT_CHAR(0x0a)
- PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("K") PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR('k') PORT_CHAR(0x0b)
-
- PORT_START("KEY.4")
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Z") PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR('z') PORT_CHAR(0x1a)
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("X") PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR('x') PORT_CHAR(0x18)
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR('c') PORT_CHAR(0x03)
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("V") PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR('v') PORT_CHAR(0x16)
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHAR('b') PORT_CHAR(0x02)
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("N") PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR('n') PORT_CHAR(0x0e)
- PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("M") PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR('m') PORT_CHAR(0x0d)
- PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
-
- PORT_START("KEY.5")
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("UP") PORT_CODE(KEYCODE_UP)
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LEFT) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')')
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("P") PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR('p') PORT_CHAR(0x10)
- PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("O") PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR('o') PORT_CHAR(0x0f)
- PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR('(')
-
- PORT_START("KEY.6")
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RIGHT") PORT_CODE(KEYCODE_RIGHT)
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("DOWN") PORT_CODE(KEYCODE_DOWN)
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("- _") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_') PORT_CHAR(0x1F)
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?') PORT_CHAR(0x7E)
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':')
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("\\ |") PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|') PORT_CHAR(0x1C)
- PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR('l')
- PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+') PORT_CHAR(0x60)
-
- PORT_START("KEY.7")
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("DEL") PORT_CODE(KEYCODE_DEL) PORT_CHAR(127)
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('{') PORT_CHAR('}')
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNUSED )
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNUSED )
- PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
- PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("FUNC") PORT_CODE(KEYCODE_END)
-INPUT_PORTS_END
-
-
-
-//**************************************************************************
-// VIDEO
-//**************************************************************************
-
-TIMER_DEVICE_CALLBACK_MEMBER(vixen_state::vsync_tick)
-{
- if (m_cmd_d0)
- {
- m_vsync = 1;
- update_interrupt();
- }
-}
-
-void vixen_state::video_start()
-{
- // register for state saving
- save_item(NAME(m_alt));
- save_item(NAME(m_256));
- save_item(NAME(m_vsync));
-}
-
-uint32_t vixen_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
-{
- const pen_t *pen = m_palette->pens();
- uint8_t x, y, chr, gfx, inv, ra;
-
- for (y = 0; y < 26; y++)
- {
- for (ra = 0; ra < 10; ra++)
- {
- for (x = 0; x < 128; x++)
- {
- uint16_t sync_addr = ((y+1) << 7) + x + 1; // it's out by a row and a column
- uint8_t sync_data = m_sync_rom[sync_addr & 0xfff];
- bool blank = BIT(sync_data, 4);
- /*
- int clrchadr = BIT(sync_data, 7);
- int hsync = BIT(sync_data, 6);
- int clrtxadr = BIT(sync_data, 5);
- int vsync = BIT(sync_data, 3);
- int comp_sync = BIT(sync_data, 2);
-
- logerror("SYNC %03x:%02x TXADR %u SCAN %u CHADR %u : COMPSYNC %u VSYNC %u BLANK %u CLRTXADR %u HSYNC %u CLRCHADR %u\n",
- sync_addr,sync_data,txadr,scan,chadr,comp_sync,vsync,blank,clrtxadr,hsync,clrchadr);
- */
-
- chr = m_video_ram[(y<<7) + x];
-
- if (m_256)
- {
- gfx = m_char_rom[(BIT(chr, 7) << 11) | (ra << 7) | (chr & 0x7f)];
- inv = m_alt ? 0xff : 0;
- }
- else
- {
- gfx = m_char_rom[(ra << 7) | (chr & 0x7f)];
- inv = BIT(chr, 7) ? 0xff : 0;
- }
-
- gfx = (blank) ? 0 : (gfx ^ inv);
-
- for (int b = 0; b < 8; b++)
- {
- int color = BIT(gfx, 7 - b);
-
- bitmap.pix32((y * 10) + ra, (x * 8) + b) = pen[color];
- }
- }
- }
- }
-
- return 0;
-}
-
-
-
-//**************************************************************************
-// SOUND
-//**************************************************************************
-
-static DISCRETE_SOUND_START( vixen_discrete )
- DISCRETE_INPUT_LOGIC(NODE_01)
- DISCRETE_SQUAREWAVE(NODE_02, NODE_01, (23.9616_MHz_XTAL / 15360).dvalue(), 100, 50, 0, 90)
- DISCRETE_OUTPUT(NODE_02, 2000)
-DISCRETE_SOUND_END
-
-
-
-//**************************************************************************
-// DEVICE CONFIGURATION
-//**************************************************************************
-
-//-------------------------------------------------
-// I8155 interface
-//-------------------------------------------------
-
-READ8_MEMBER( vixen_state::i8155_pa_r )
-{
- uint8_t data = 0xff;
-
- for (int i = 0; i < 8; i++)
- if (!BIT(m_col, i)) data &= m_key[i]->read();
-
- return data;
-}
-
-WRITE8_MEMBER( vixen_state::i8155_pb_w )
-{
- m_col = data;
-}
-
-WRITE8_MEMBER( vixen_state::i8155_pc_w )
-{
- /*
-
- bit description
-
- 0 DSEL1/
- 1 DSEL2/
- 2 DDEN/
- 3 ALT CHARSET/
- 4 256 CHARS
- 5 BEEP ENABLE
- 6
- 7
-
- */
-
- // drive select
- floppy_image_device *floppy = nullptr;
-
- if (!BIT(data, 0)) floppy = m_floppy0->get_device();
- if (!BIT(data, 1)) floppy = m_floppy1->get_device();
-
- m_fdc->set_floppy(floppy);
-
- if (floppy) floppy->mon_w(0);
-
- // density select
- m_fdc->dden_w(BIT(data, 2));
-
- // charset
- m_alt = !BIT(data, 3);
- m_256 = !BIT(data, 4);
-
- // beep enable
- m_discrete->write(NODE_01, !BIT(data, 5));
-}
-
-//-------------------------------------------------
-// I8155 IO interface
-//-------------------------------------------------
-
-WRITE8_MEMBER( vixen_state::io_i8155_pb_w )
-{
- /*
-
- bit description
-
- PB0 ATN
- PB1 DAV
- PB2 NDAC
- PB3 NRFD
- PB4 EOI
- PB5 SRQ
- PB6 IFC
- PB7 REN
-
- */
-
- /* data valid */
- m_ieee488->host_atn_w(BIT(data, 0));
-
- /* end or identify */
- m_ieee488->host_dav_w(BIT(data, 1));
-
- /* remote enable */
- m_ieee488->host_ndac_w(BIT(data, 2));
-
- /* attention */
- m_ieee488->host_nrfd_w(BIT(data, 3));
-
- /* interface clear */
- m_ieee488->host_eoi_w(BIT(data, 4));
-
- /* service request */
- m_ieee488->host_srq_w(BIT(data, 5));
-
- /* not ready for data */
- m_ieee488->host_ifc_w(BIT(data, 6));
-
- /* data not accepted */
- m_ieee488->host_ren_w(BIT(data, 7));
-}
-
-WRITE8_MEMBER( vixen_state::io_i8155_pc_w )
-{
- /*
-
- bit description
-
- PC0 select internal clock
- PC1 ENB RING INT
- PC2 ENB RCV INT
- PC3 ENB XMT INT
- PC4 ENB ATN INT
- PC5 ENB SRQ INT
- PC6
- PC7
-
- */
-
- m_int_clk = BIT(data, 0);
- m_enb_ring_int = BIT(data, 1);
- m_enb_rcv_int = BIT(data, 2);
- m_enb_xmt_int = BIT(data, 3);
- m_enb_atn_int = BIT(data, 4);
- m_enb_srq_int = BIT(data, 5);
-}
-
-WRITE_LINE_MEMBER( vixen_state::io_i8155_to_w )
-{
- if (m_int_clk)
- {
- m_usart->write_txc(state);
- m_usart->write_rxc(state);
- }
-}
-
-//-------------------------------------------------
-// i8251_interface usart_intf
-//-------------------------------------------------
-
-WRITE_LINE_MEMBER( vixen_state::rxrdy_w )
-{
- m_rxrdy = state;
- update_interrupt();
-}
-
-WRITE_LINE_MEMBER( vixen_state::txrdy_w )
-{
- m_txrdy = state;
- update_interrupt();
-}
-
-//-------------------------------------------------
-// IEEE488 interface
-//-------------------------------------------------
-
-WRITE_LINE_MEMBER( vixen_state::srq_w )
-{
- m_srq = state;
- update_interrupt();
-}
-
-WRITE_LINE_MEMBER( vixen_state::atn_w )
-{
- m_atn = state;
- update_interrupt();
-}
-
-static void vixen_floppies(device_slot_interface &device)
-{
- device.option_add("525dd", FLOPPY_525_DD);
-}
-
-WRITE_LINE_MEMBER( vixen_state::fdc_intrq_w )
-{
- m_fdint = state;
- update_interrupt();
-}
-
-
-
-//**************************************************************************
-// MACHINE INITIALIZATION
-//**************************************************************************
-
-IRQ_CALLBACK_MEMBER(vixen_state::vixen_int_ack)
-{
- // D0 is pulled low
- return 0xfe;
-}
-
-void vixen_state::machine_start()
-{
- // configure memory banking
-
- membank("bank3")->configure_entry(0, m_video_ram);
- membank("bank3")->configure_entry(1, m_rom);
-
- membank("bank4")->configure_entry(0, m_video_ram);
-
- // register for state saving
- save_item(NAME(m_col));
- save_item(NAME(m_cmd_d0));
- save_item(NAME(m_cmd_d1));
- save_item(NAME(m_fdint));
-}
-
-void vixen_state::machine_reset()
-{
- membank("bank3")->set_entry(1);
-
- m_vsync = 0;
- m_cmd_d0 = 0;
- m_cmd_d1 = 0;
- update_interrupt();
-
- m_fdc->reset();
- m_io_i8155->reset();
- m_usart->reset();
- m_maincpu->set_state_int(Z80_PC, 0xf000);
-}
-
-
-
-//**************************************************************************
-// MACHINE CONFIGURATION
-//**************************************************************************
-
-void vixen_state::vixen(machine_config &config)
-{
- // basic machine hardware
- Z80(config, m_maincpu, 23.9616_MHz_XTAL / 6);
- m_maincpu->set_addrmap(AS_PROGRAM, &vixen_state::vixen_mem);
- m_maincpu->set_addrmap(AS_OPCODES, &vixen_state::bios_mem);
- m_maincpu->set_addrmap(AS_IO, &vixen_state::vixen_io);
- m_maincpu->set_irq_acknowledge_callback(FUNC(vixen_state::vixen_int_ack));
-
- // video hardware
- screen_device &screen(SCREEN(config, SCREEN_TAG, SCREEN_TYPE_RASTER));
- screen.set_color(rgb_t::amber());
- screen.set_screen_update(FUNC(vixen_state::screen_update));
- screen.set_raw(23.9616_MHz_XTAL / 2, 96*8, 0*8, 81*8, 27*10, 0*10, 26*10);
-
- TIMER(config, "vsync").configure_scanline(FUNC(vixen_state::vsync_tick), SCREEN_TAG, 26*10, 27*10);
-
- PALETTE(config, m_palette, palette_device::MONOCHROME);
-
- // sound hardware
- SPEAKER(config, "mono").front_center();
- DISCRETE(config, DISCRETE_TAG, vixen_discrete).add_route(ALL_OUTPUTS, "mono", 0.20);
-
- // devices
- i8155_device &i8155(I8155(config, P8155H_TAG, 23.9616_MHz_XTAL / 6));
- i8155.in_pa_callback().set(FUNC(vixen_state::i8155_pa_r));
- i8155.out_pb_callback().set(FUNC(vixen_state::i8155_pb_w));
- i8155.out_pc_callback().set(FUNC(vixen_state::i8155_pc_w));
-
- i8155_device &i8155_io(I8155(config, P8155H_IO_TAG, 23.9616_MHz_XTAL / 6));
- i8155_io.out_pa_callback().set(m_ieee488, FUNC(ieee488_device::host_dio_w));
- i8155_io.out_pb_callback().set(FUNC(vixen_state::io_i8155_pb_w));
- i8155_io.out_pc_callback().set(FUNC(vixen_state::io_i8155_pc_w));
- i8155_io.out_to_callback().set(FUNC(vixen_state::io_i8155_to_w));
-
- I8251(config, m_usart, 0);
- m_usart->txd_handler().set(m_rs232, FUNC(rs232_port_device::write_txd));
- m_usart->dtr_handler().set(m_rs232, FUNC(rs232_port_device::write_dtr));
- m_usart->rts_handler().set(m_rs232, FUNC(rs232_port_device::write_rts));
- m_usart->rxrdy_handler().set(FUNC(vixen_state::rxrdy_w));
- m_usart->txrdy_handler().set(FUNC(vixen_state::txrdy_w));
-
- RS232_PORT(config, m_rs232, default_rs232_devices, nullptr);
- m_rs232->rxd_handler().set(m_usart, FUNC(i8251_device::write_rxd));
- m_rs232->dsr_handler().set(m_usart, FUNC(i8251_device::write_dsr));
-
- FD1797(config, m_fdc, 23.9616_MHz_XTAL / 24);
- m_fdc->intrq_wr_callback().set(FUNC(vixen_state::fdc_intrq_w));
- FLOPPY_CONNECTOR(config, FDC1797_TAG":0", vixen_floppies, "525dd", floppy_image_device::default_floppy_formats).enable_sound(true);
- FLOPPY_CONNECTOR(config, FDC1797_TAG":1", vixen_floppies, "525dd", floppy_image_device::default_floppy_formats).enable_sound(true);
- IEEE488(config, m_ieee488);
- m_ieee488->srq_callback().set(FUNC(vixen_state::srq_w));
- m_ieee488->atn_callback().set(FUNC(vixen_state::atn_w));
-
- /* software lists */
- SOFTWARE_LIST(config, "disk_list").set_original("vixen");
-
- // internal ram
- RAM(config, RAM_TAG).set_default_size("64K");
-}
-
-
-
-//**************************************************************************
-// ROMS
-//**************************************************************************
-
-ROM_START( vixen )
- ROM_REGION( 0x1000, Z8400A_TAG, 0 )
- ROM_LOAD( "osborne 4 mon rom v1.04 3p40082-03 a0a9.4c", 0x0000, 0x1000, CRC(5f1038ce) SHA1(e6809fac23650bbb4689e58edc768d917d80a2df) ) // OSBORNE 4 MON ROM / V1.04 3P40082-03 / A0A9 (c) OCC 1985
-
- ROM_REGION( 0x1000, "video", 0 )
- ROM_LOAD( "v1.10.3j", 0x0000, 0x1000, CRC(1f93e2d7) SHA1(0c479bfd3ac8d9959c285c020d0096930a9c6867) )
-
- ROM_REGION( 0x1000, "chargen", 0 )
- ROM_LOAD( "v1.00 l.1j", 0x0000, 0x1000, CRC(f97c50d9) SHA1(39f73afad68508c4b8a4d241c064f9978098d8f2) )
-ROM_END
-
-
-
-//**************************************************************************
-// DRIVER INITIALIZATION
-//**************************************************************************
-
-void vixen_state::init_vixen()
-{
- m_program = &m_maincpu->space(AS_PROGRAM);
-}
-
-
-
-//**************************************************************************
-// SYSTEM DRIVERS
-//**************************************************************************
-
-// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
-COMP( 1984, vixen, 0, 0, vixen, vixen, vixen_state, init_vixen, "Osborne", "Vixen", 0 )