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Diffstat (limited to 'src/mess/drivers/osbexec.c')
-rw-r--r--src/mess/drivers/osbexec.c581
1 files changed, 0 insertions, 581 deletions
diff --git a/src/mess/drivers/osbexec.c b/src/mess/drivers/osbexec.c
deleted file mode 100644
index 0318dfa31a0..00000000000
--- a/src/mess/drivers/osbexec.c
+++ /dev/null
@@ -1,581 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:Wilbert Pol
-/***************************************************************************
-
- Osborne Executive driver file
-
-***************************************************************************/
-
-#include "emu.h"
-#include "cpu/z80/z80.h"
-#include "cpu/z80/z80daisy.h"
-#include "sound/speaker.h"
-#include "machine/wd_fdc.h"
-#include "machine/6821pia.h"
-#include "machine/z80dart.h"
-#include "machine/pit8253.h"
-#include "machine/ram.h"
-
-
-#define MAIN_CLOCK 23961600
-
-
-class osbexec_state : public driver_device
-{
-public:
- osbexec_state(const machine_config &mconfig, device_type type, const char *tag)
- : driver_device(mconfig, type, tag),
- m_maincpu( *this, "maincpu" ),
- m_mb8877( *this, "mb8877" ),
- m_messram( *this, RAM_TAG ),
- m_pia_0( *this, "pia_0" ),
- m_pia_1( *this, "pia_1" ),
- m_sio( *this, "sio" ),
- m_speaker( *this, "speaker" ),
- m_floppy0( *this, "mb8877:0:525ssdd" ),
- m_floppy1( *this, "mb8877:1:525ssdd" )
- { }
-
- required_device<cpu_device> m_maincpu;
- required_device<mb8877_t> m_mb8877;
- required_device<ram_device> m_messram;
- required_device<pia6821_device> m_pia_0;
- required_device<pia6821_device> m_pia_1;
- required_device<z80dart_device> m_sio;
- required_device<speaker_sound_device> m_speaker;
- required_device<floppy_image_device> m_floppy0;
- required_device<floppy_image_device> m_floppy1;
-
- virtual void video_start();
-
- UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
-
- bitmap_ind16 m_bitmap;
-
- memory_region *m_fontram_region;
- memory_region *m_vram_region;
- UINT8 *m_fontram;
- UINT8 *m_vram;
- UINT8 *m_ram_0000;
- UINT8 *m_ram_c000;
- UINT8 m_temp_attr;
- emu_timer *m_video_timer;
-
- /* PIA 0 (UD12) */
- UINT8 m_pia0_porta;
- UINT8 m_pia0_portb;
- int m_pia0_irq_state;
- int m_pia0_cb2; /* 60/50 */
-
- /* PIA 1 (UD8) */
- int m_pia1_irq_state;
-
- /* Vblank counter ("RTC") */
- UINT8 m_rtc;
-
- void set_banks()
- {
- UINT8 *ram_ptr = m_messram->pointer();
-
- m_ram_0000 = ram_ptr;
-
- if ( m_pia0_porta & 0x01 )
- m_ram_0000 += 0x10000;
-
- membank( "0000" )->set_base( m_ram_0000 + 0x0000 );
- membank( "2000" )->set_base( m_ram_0000 + 0x2000 );
- membank( "4000" )->set_base( m_ram_0000 + 0x4000 );
- m_ram_c000 = m_ram_0000 + 0xc000;
- membank( "e000" )->set_base( m_ram_0000 + 0xe000 );
-
- if ( m_pia0_porta & 0x80 )
- {
- membank( "0000" )->set_base( memregion("maincpu")->base());
- /* When BIOS is enabled 2000-3FFF is set to the "ROM RAM" */
- membank( "2000" )->set_base( ram_ptr + 0x20000 );
- }
-
- if ( m_pia0_porta & 0x40 )
- m_ram_c000 = m_vram_region->base();
- }
-
- void update_irq_state()
- {
- if ( m_pia0_irq_state || m_pia1_irq_state )
- m_maincpu->set_input_line(0, ASSERT_LINE );
- else
- m_maincpu->set_input_line(0, CLEAR_LINE );
- }
- DECLARE_WRITE8_MEMBER(osbexec_0000_w);
- DECLARE_READ8_MEMBER(osbexec_c000_r);
- DECLARE_WRITE8_MEMBER(osbexec_c000_w);
- DECLARE_READ8_MEMBER(osbexec_kbd_r);
- DECLARE_READ8_MEMBER(osbexec_rtc_r);
- DECLARE_DRIVER_INIT(osbexec);
- virtual void machine_reset();
- TIMER_CALLBACK_MEMBER(osbexec_video_callback);
- DECLARE_READ8_MEMBER(osbexec_pia0_a_r);
- DECLARE_WRITE8_MEMBER(osbexec_pia0_a_w);
- DECLARE_READ8_MEMBER(osbexec_pia0_b_r);
- DECLARE_WRITE8_MEMBER(osbexec_pia0_b_w);
- DECLARE_WRITE_LINE_MEMBER(osbexec_pia0_ca2_w);
- DECLARE_WRITE_LINE_MEMBER(osbexec_pia0_cb2_w);
- DECLARE_WRITE_LINE_MEMBER(osbexec_pia0_irq);
- DECLARE_WRITE_LINE_MEMBER(osbexec_pia1_irq);
-};
-
-
-WRITE8_MEMBER(osbexec_state::osbexec_0000_w)
-{
- /* Font RAM writing is enabled when ROM bank is enabled */
- if ( m_pia0_porta & 0x80 )
- {
- if ( offset < 0x1000 )
- m_fontram[ offset ] = data;
- }
- else
- {
- m_ram_0000[ offset ] = data;
- }
-}
-
-
-READ8_MEMBER(osbexec_state::osbexec_c000_r)
-{
- UINT8 data = m_ram_c000[offset];
-
- if ( ( m_pia0_porta & 0x40 ) && offset < 0x1000 )
- {
- m_temp_attr = m_ram_c000[ 0x1000 + offset ];
- }
-
- return data;
-}
-
-
-WRITE8_MEMBER(osbexec_state::osbexec_c000_w)
-{
- m_ram_c000[offset] = data;
-
- if ( ( m_pia0_porta & 0x40 ) && offset < 0x1000 )
- {
- m_ram_c000[ 0x1000 + offset ] = m_temp_attr;
- }
-}
-
-
-READ8_MEMBER(osbexec_state::osbexec_kbd_r)
-{
- UINT8 data = 0xFF;
-
- if ( offset & 0x0100 )
- data &= ioport( "ROW0" )->read();
-
- if ( offset & 0x0200 )
- data &= ioport( "ROW1" )->read();
-
- if ( offset & 0x0400 )
- data &= ioport( "ROW2" )->read();
-
- if ( offset & 0x0800 )
- data &= ioport( "ROW3" )->read();
-
- if ( offset & 0x1000 )
- data &= ioport( "ROW4" )->read();
-
- if ( offset & 0x2000 )
- data &= ioport( "ROW5" )->read();
-
- if ( offset & 0x4000 )
- data &= ioport( "ROW6" )->read();
-
- if ( offset & 0x8000 )
- data &= ioport( "ROW7" )->read();
-
- return data;
-}
-
-
-READ8_MEMBER(osbexec_state::osbexec_rtc_r)
-{
- return m_rtc;
-}
-
-
-static ADDRESS_MAP_START( osbexec_mem, AS_PROGRAM, 8, osbexec_state )
- AM_RANGE( 0x0000, 0x1FFF ) AM_READ_BANK("0000") AM_WRITE(osbexec_0000_w ) /* ROM and maybe also banked ram */
- AM_RANGE( 0x2000, 0x3FFF ) AM_RAMBANK("2000") /* Banked RAM */
- AM_RANGE( 0x4000, 0xBFFF ) AM_RAMBANK("4000") /* Banked RAM */
- AM_RANGE( 0xC000, 0xDFFF ) AM_READWRITE(osbexec_c000_r, osbexec_c000_w ) /* Video ram / Banked RAM */
- AM_RANGE( 0xE000, 0xEFFF ) AM_RAMBANK("e000") /* Banked RAM */
- AM_RANGE( 0xF000, 0xFFFF ) AM_RAM /* 4KB of non-banked RAM for system stack etc */
-ADDRESS_MAP_END
-
-
-static ADDRESS_MAP_START( osbexec_io, AS_IO, 8, osbexec_state )
- ADDRESS_MAP_UNMAP_HIGH
- AM_RANGE( 0x00, 0x03 ) AM_MIRROR( 0xff00 ) AM_DEVREADWRITE( "pia_0", pia6821_device, read, write) /* 6821 PIA @ UD12 */
- /* 0x04 - 0x07 - 8253 @UD1 */
- AM_RANGE( 0x08, 0x0B ) AM_MIRROR( 0xff00 ) AM_DEVREADWRITE("mb8877", wd_fdc_t, read, write ) /* MB8877 @ UB17 input clock = 1MHz */
- AM_RANGE( 0x0C, 0x0F ) AM_MIRROR( 0xff00 ) AM_DEVREADWRITE("sio", z80sio2_device, ba_cd_r, ba_cd_w ) /* SIO @ UD4 */
- AM_RANGE( 0x10, 0x13 ) AM_MIRROR( 0xff00 ) AM_DEVREADWRITE( "pia_1", pia6821_device, read, write) /* 6821 PIA @ UD8 */
- AM_RANGE( 0x14, 0x17 ) AM_MIRROR( 0xff00 ) AM_MASK( 0xff00 ) AM_READ(osbexec_kbd_r ) /* KBD */
- AM_RANGE( 0x18, 0x1b ) AM_MIRROR( 0xff00 ) AM_READ(osbexec_rtc_r ) /* "RTC" @ UE13/UF13 */
- /* ?? - vid ? */
-ADDRESS_MAP_END
-
-
-static INPUT_PORTS_START( osbexec )
- PORT_START("ROW0")
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSLASH2) PORT_CHAR('[') PORT_CHAR(']')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('\'') PORT_CHAR('"')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RSHIFT) PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_SHIFT_2)
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TAB) PORT_CHAR('\t')
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC))
-
- PORT_START("ROW1")
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('*')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('^')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@')
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
-
- PORT_START("ROW2")
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W')
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q')
-
- PORT_START("ROW3")
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')
-
- PORT_START("ROW4")
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X')
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z')
-
- PORT_START("ROW5")
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR('(')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT))
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP))
-
- PORT_START("ROW6")
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('\\') PORT_CHAR('|')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN))
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
-
- PORT_START("ROW7")
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_DIPNAME( 0x08, 0, "Alpha Lock" ) PORT_CODE(KEYCODE_CAPSLOCK) PORT_TOGGLE PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK))
- PORT_DIPSETTING( 0x08, DEF_STR( Off ) )
- PORT_DIPSETTING( 0x00, DEF_STR( On ) )
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
-INPUT_PORTS_END
-
-
-void osbexec_state::video_start()
-{
- machine().first_screen()->register_screen_bitmap(m_bitmap);
-}
-
-UINT32 osbexec_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
-{
- copybitmap(bitmap, m_bitmap, 0, 0, 0, 0, cliprect);
- return 0;
-}
-
-/*
- UD12 - 6821 PIA
-
- Port A:
- PA7 - ROM BANK ENA
- PA6 - VRAM BANK ENA
- PA5 - BANK6ENA
- PA4 - BANK5ENA
- PA3 - BANK4ENA
- PA2 - BANK3ENA
- PA1 - BANK2ENA
- PA0 - BANK1ENA
- CA1 - DMA IRQ
- CA2 - KBD STB (i/o)
-
- Port B:
- PB7 - MODEM RI (input)
- PB6 - MODEM DSR (input)
- PB5 - TXC SEL
- PB4 - RXC SEL
- PB3 - speaker
- PB2 - DSEL2
- PB1 - DSEL1
- PB0 - DDEN
- CB1 - VBlank (input)
- CB2 - 60/50 (?)
-*/
-
-READ8_MEMBER(osbexec_state::osbexec_pia0_a_r)
-{
- return m_pia0_porta;
-}
-
-
-WRITE8_MEMBER(osbexec_state::osbexec_pia0_a_w)
-{
- logerror("osbexec_pia0_a_w: %02x\n", data );
-
- m_pia0_porta = data;
-
- set_banks();
-}
-
-
-READ8_MEMBER(osbexec_state::osbexec_pia0_b_r)
-{
- return m_pia0_portb;
-}
-
-
-WRITE8_MEMBER(osbexec_state::osbexec_pia0_b_w)
-{
- m_pia0_portb = data;
-
- m_speaker->level_w(!BIT(data, 3));
-
- switch ( data & 0x06 )
- {
- case 0x02:
- m_mb8877->set_floppy(m_floppy1);
- m_floppy1->mon_w(0);
- break;
- case 0x04:
- m_mb8877->set_floppy(m_floppy0);
- m_floppy0->mon_w(0);
- break;
- default:
- m_mb8877->set_floppy(NULL);
- break;
- }
-
- m_mb8877->dden_w(( data & 0x01 ) ? 1 : 0 );
-}
-
-
-WRITE_LINE_MEMBER(osbexec_state::osbexec_pia0_ca2_w)
-{
- logerror("osbexec_pia0_ca2_w: state = %d\n", state);
-}
-
-
-WRITE_LINE_MEMBER(osbexec_state::osbexec_pia0_cb2_w)
-{
- m_pia0_cb2 = state;
-}
-
-
-WRITE_LINE_MEMBER(osbexec_state::osbexec_pia0_irq)
-{
- m_pia0_irq_state = state;
- update_irq_state();
-}
-
-
-WRITE_LINE_MEMBER(osbexec_state::osbexec_pia1_irq)
-{
- m_pia1_irq_state = state;
- update_irq_state();
-}
-
-
-/*
- * The Osborne Executive supports the following disc formats: (TODO: Verify)
- * - Osborne single density: 40 tracks, 10 sectors per track, 256-byte sectors (100 KByte)
- * - Osborne double density: 40 tracks, 5 sectors per track, 1024-byte sectors (200 KByte)
- * - IBM Personal Computer: 40 tracks, 8 sectors per track, 512-byte sectors (160 KByte)
- * - Xerox 820 Computer: 40 tracks, 18 sectors per track, 128-byte sectors (90 KByte)
- * - DEC 1820 double density: 40 tracks, 9 sectors per track, 512-byte sectors (180 KByte)
- *
- */
-
-static SLOT_INTERFACE_START( osborne2_floppies )
- SLOT_INTERFACE( "525ssdd", FLOPPY_525_SSDD )
-SLOT_INTERFACE_END
-
-
-TIMER_CALLBACK_MEMBER(osbexec_state::osbexec_video_callback)
-{
- int y = machine().first_screen()->vpos();
-
- /* Start of frame */
- if ( y == 0 )
- {
- /* Clear CB1 on PIA @ UD12 */
- m_pia_0->cb1_w(0);
- }
- else if ( y == 240 )
- {
- /* Set CB1 on PIA @ UD12 */
- m_pia_0->cb1_w(1);
- m_rtc++;
- }
- if ( y < 240 )
- {
- UINT16 row_addr = ( y / 10 ) * 128;
- UINT16 *p = &m_bitmap.pix16(y);
- UINT8 char_line = y % 10;
-
- for ( int x = 0; x < 80; x++ )
- {
- UINT8 ch = m_vram[ row_addr + x ];
- UINT8 attr = m_vram[ 0x1000 + row_addr + x ];
- UINT8 fg_col = ( attr & 0x80 ) ? 2 : 1;
- UINT8 font_bits = m_fontram[ ( ( attr & 0x10 ) ? 0x800 : 0 ) + ( ch & 0x7f ) * 16 + char_line ];
-
- /* Check for underline */
- if ( ( attr & 0x40 ) && char_line == 9 )
- font_bits = 0xFF;
-
- /* Check for blink */
- if ( ( attr & 0x20 ) && ( m_rtc & 0x10 ) )
- font_bits = 0;
-
- /* Check for inverse video */
- if ( ( ch & 0x80 ) && ! ( attr & 0x10 ) )
- font_bits ^= 0xFF;
-
- for ( int b = 0; b < 8; b++ )
- {
- p[ x * 8 + b ] = ( font_bits & 0x80 ) ? fg_col : 0;
- font_bits <<= 1;
- }
- }
- }
-
- m_video_timer->adjust( machine().first_screen()->time_until_pos( y + 1, 0 ) );
-}
-
-
-DRIVER_INIT_MEMBER(osbexec_state,osbexec)
-{
- m_fontram_region = machine().memory().region_alloc( "fontram", 0x1000, 1, ENDIANNESS_LITTLE);
- m_vram_region = machine().memory().region_alloc( "vram", 0x2000, 1, ENDIANNESS_LITTLE );
- m_vram = m_vram_region->base();
- m_fontram = m_fontram_region->base();
-
-
- memset( m_fontram, 0x00, 0x1000 );
- memset( m_vram, 0x00, 0x2000 );
-
- m_video_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(osbexec_state::osbexec_video_callback),this));
-}
-
-
-void osbexec_state::machine_reset()
-{
- m_pia0_porta = 0xC0; /* Enable ROM and VRAM on reset */
-
- set_banks();
-
- m_video_timer->adjust( machine().first_screen()->time_until_pos( 0, 0 ) );
-
- m_rtc = 0;
-}
-
-
-static const z80_daisy_config osbexec_daisy_config[] =
-{
- { "sio" },
- { NULL }
-};
-
-
-static MACHINE_CONFIG_START( osbexec, osbexec_state )
- MCFG_CPU_ADD( "maincpu", Z80, MAIN_CLOCK/6 )
- MCFG_CPU_PROGRAM_MAP( osbexec_mem)
- MCFG_CPU_IO_MAP( osbexec_io)
- MCFG_CPU_CONFIG( osbexec_daisy_config )
-
- MCFG_SCREEN_ADD("screen", RASTER)
- MCFG_SCREEN_UPDATE_DRIVER(osbexec_state, screen_update)
- MCFG_SCREEN_RAW_PARAMS( MAIN_CLOCK/2, 768, 0, 640, 260, 0, 240 ) /* May not be correct */
- MCFG_SCREEN_PALETTE("palette")
- MCFG_PALETTE_ADD_MONOCHROME_GREEN_HIGHLIGHT("palette")
-
- MCFG_SPEAKER_STANDARD_MONO( "mono" )
- MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0)
- MCFG_SOUND_ROUTE( ALL_OUTPUTS, "mono", 1.00 )
-
-// MCFG_PIT8253_ADD("pit", osbexec_pit_config)
-
- MCFG_DEVICE_ADD("pia_0", PIA6821, 0)
- MCFG_PIA_READPA_HANDLER(READ8(osbexec_state, osbexec_pia0_a_r))
- MCFG_PIA_READPB_HANDLER(READ8(osbexec_state, osbexec_pia0_b_r))
- MCFG_PIA_WRITEPA_HANDLER(WRITE8(osbexec_state, osbexec_pia0_a_w))
- MCFG_PIA_WRITEPB_HANDLER(WRITE8(osbexec_state, osbexec_pia0_b_w))
- MCFG_PIA_CA2_HANDLER(WRITELINE(osbexec_state, osbexec_pia0_ca2_w))
- MCFG_PIA_CB2_HANDLER(WRITELINE(osbexec_state, osbexec_pia0_cb2_w))
- MCFG_PIA_IRQA_HANDLER(WRITELINE(osbexec_state, osbexec_pia0_irq))
- MCFG_PIA_IRQB_HANDLER(WRITELINE(osbexec_state, osbexec_pia0_irq))
-
- MCFG_DEVICE_ADD("pia_1", PIA6821, 0)
- MCFG_PIA_IRQA_HANDLER(WRITELINE(osbexec_state, osbexec_pia1_irq))
- MCFG_PIA_IRQB_HANDLER(WRITELINE(osbexec_state, osbexec_pia1_irq))
-
- MCFG_Z80SIO2_ADD("sio", MAIN_CLOCK/6, 0, 0, 0, 0)
-
- MCFG_DEVICE_ADD("mb8877", MB8877, MAIN_CLOCK/24)
- MCFG_WD_FDC_INTRQ_CALLBACK(DEVWRITELINE("pia_1", pia6821_device, cb1_w))
- MCFG_FLOPPY_DRIVE_ADD("mb8877:0", osborne2_floppies, "525ssdd", floppy_image_device::default_floppy_formats)
- MCFG_FLOPPY_DRIVE_ADD("mb8877:1", osborne2_floppies, "525ssdd", floppy_image_device::default_floppy_formats)
-
- /* internal ram */
- MCFG_RAM_ADD(RAM_TAG)
- MCFG_RAM_DEFAULT_SIZE("136K") /* 128KB Main RAM + RAM in ROM bank (8) */
-
- /* software lists */
- MCFG_SOFTWARE_LIST_ADD("flop_list", "osborne2")
-MACHINE_CONFIG_END
-
-
-ROM_START( osbexec )
- ROM_REGION(0x2000, "maincpu", 0)
- ROM_LOAD( "execv12.ud18", 0x0000, 0x2000, CRC(70798c2f) SHA1(2145a72da563bed1d6d455c77e48cc011a5f1153) ) /* Checksum C6B2 */
-ROM_END
-
-/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
-COMP( 1982, osbexec, 0, 0, osbexec, osbexec, osbexec_state, osbexec, "Osborne", "Executive", MACHINE_NOT_WORKING )