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Diffstat (limited to 'src/devices/bus/isa/mda.cpp')
-rw-r--r--src/devices/bus/isa/mda.cpp519
1 files changed, 0 insertions, 519 deletions
diff --git a/src/devices/bus/isa/mda.cpp b/src/devices/bus/isa/mda.cpp
index 8d487e3303b..4e0122d83fd 100644
--- a/src/devices/bus/isa/mda.cpp
+++ b/src/devices/bus/isa/mda.cpp
@@ -975,522 +975,3 @@ MC6845_UPDATE_ROW( isa8_ec1840_0002_device::crtc_update_row )
break;
}
}
-
-/*****************************************************************************
-
- Ericsson PC Monochrome HR Graphics Board 1070
-
-******************************************************************************/
-
-/* PCB layouts and assembly years from online pictures and physical unit.
- Ericsson - marked SPVT02 8301 60 53-10, assembled in 1985 indicated by chip dates
- +--------------------------------------------------------------------------------------+ ___
- | IC1 IC2 IC3 IC4 IC5 +-IC15--EPROM-+ IC6 IC7 IC8 S1 ||
- | |8363 65 14-80| ||
- | IC9 IC10 IC11 IC12 IC13 IC14|CG 50821 A64 |+------------------++-IC24 EPROM--+ ||
- | +-------------+| CRTC HD46505SP-1 ||10-40VP | ||
- | IC16 IC17 IC18 IC19 IC20 IC21 IC22 | IC23 HD68A45SP ||402 28 A19 | J4|| not
- | +------------------++-------------+ || mounted
- | IC25 IC26 IC27 IC28 IC29 IC30 IC31 IC32 IC33 IC34 ||
- | O-|__
- | IC35 IC36 IC37 IC38 IC39 IC40 IC41 IC42 IC43 IC44 || |
- | ||DB15
- | IC45 IC46 IC47 IC48 IC49 IC50 IC51 IC52 IC53 IC54 || |
- | ||__|
- | IC55 IC56 IC57 IC58 IC59 IC60 IC61 IC62 IC63 IC64 O-|
- | J1A ||
- | IC65 IC66 IC67 IC68 IC69 IC70 IC71 IC72 +--------------------------------------------+|
- +-----------------------------------------+ ||||||||| ||||||||||||||||||||||||| |
- I85565 A85571 (labels) |
- |
-
- IC's (from photos)
- ------------------------------------------------------------------------------
- IC1 74F109 IC26 74F86 IC51 TMS4416-15NL 4 x 16Kbits DRAM
- IC2 74LS393 IC27 74LS08 IC52 74ALS574
- IC3 74F64 IC28 74F153 IC53 74LS138
- IC4 74ALS299 IC29 74LS174 IC54 74F86
- IC5 74LS375 IC30 74LS374 IC55 74F109
- IC6 74LS151 IC31 74LS374 IC56 74F32
- IC7 74LS153 IC32 74ALS574 IC57 74F109
- IC8 74LS389? IC33 74LS08 IC58 74F00?
- IC9 74F02 IC34 74LS245 IC59 74LS244
- IC10 74ALS109 IC35 74F10? IC60 TMS4416-15NL 4 x 16Kbits DRAM
- IC11 Crystal 17.040MHz IC36 74LS02 IC61 TMS4416-15NL 4 x 16Kbits DRAM
- IC12 74F64 IC37 74LS00 IC62 74ALS574
- IC13 74ALS299 IC38 74F374 IC63 74LS138
- IC14 PAL? 10-70ART40101 IC39 74LS125 IC64 74LS245
- IC15 EPROM 8363 65 14-80 CG 50821 A64 IC40 74LS244 IC65 74LS00
- IC16 Crystal 19.170MHz IC41 74LS244 IC66 74LS02
- IC17 74LS10 IC42 74LS574 IC67 74LS51
- IC18 74F08 IC43 74LS32 IC68 74LS04
- IC19 74ALS574 IC44 MC10124 - TTL to MECL converter IC69 74LS153
- IC20 74LS299 IC45 74LS109 IC70 74LS109
- IC21 74LS273 IC46 74LS00 IC71 74LS138
- IC22 74ALS574 IC47 74F194 IC72 74LS139
- IC23 CRTC HD46505SP,HD68A45SP IC48 74F04
- IC24 EPROM 2764, 10-40 VP 402 28 A19 IC49 74LS174
- IC25 74ALS109 IC50 TMS4416-15NL 4 x 16Kbits DRAM
-
- General description
- -------------------
- The PCB has a 2 bit DIP switch S1 and a DB15 non standard video connector. There is also an unsoldered J4 connector
- above the DB15 but no hole prepared for a connector in the plate. Above the J4 connector there is a two pin PCB connector
- that probably receives the power for the monitor for the DB15 from the PSU.
-
- Just below IC65 and IC66 there are two labels saying "I 85565" and "A E85571" respectively
-
- Video cable, card DB15 <---> monitor DB25
- ---------------------------------------------------
- Ericsson 2 +VS 4 Ericsson
- Monochrome 3 VS return 2 Monochrome HR
- HR Graphics 10 +VS 17 Monitors 3111 (Amber) or
- Board 1070 11 VS return 15 3712/3715 (Black & White)
- 4 VSYNC 6
- 12 VSYNC 19
- 5 HSYNC 7
- 13 HSYNC 20
- 6 High intensity 8
- 14 High intensity 21
- 7 Video 9
- 15 Video 22
- 8 GND 11
-
- This board is normaly used with an Ericsson monitor due to the non standard connector.
- Trivia: https://www.pinterest.se/pin/203084264425177097/
- */
-
-#define EPC_MDA_SCREEN "epc_mda_screen" // TODO: use a device finder reference instead
-
-ROM_START( epc )
- ROM_REGION(0x2000,"chargen", 0)
- ROM_LOAD("8363_65_14_80_cg_50821_a64.bin", 0x00000, 0x2000, CRC(be709786) SHA1(38ab26224bbe66bbe2bb2ccac29b41cbf78bdbf8))
- //ROM_LOAD("10_40_vp_402_28_ic_24_a19.bin", 0x00000, 0x2000, CRC(2aa53b92) SHA1(87051a037249eb631d7d2191bc0e925125c60f39))
-ROM_END
-
-//**************************************************************************
-// GLOBAL VARIABLES
-//**************************************************************************
-DEFINE_DEVICE_TYPE(ISA8_EPC_MDA, isa8_epc_mda_device, "isa_epc_mda", "Ericsson PC Monochrome HR Graphics Board 1070")
-
-
-//-------------------------------------------------
-// device_add_mconfig - add device configuration
-//-------------------------------------------------
-/* There are two crystals on the board: 19.170Mhz and 17.040MHz TODO: verify use */
-/* Text modes uses 720x400 base resolution and the Graphics modes 320/640x200/400 */
-/* This matches the difference between the crystals so we assume this for now */
-void isa8_epc_mda_device::device_add_mconfig(machine_config &config)
-{
- screen_device &screen(SCREEN(config, EPC_MDA_SCREEN, SCREEN_TYPE_RASTER));
- screen.set_raw(XTAL(19'170'000) / 4, 720, 0, 720, 400, 0, 400);
- //screen.set_screen_update(MC6845_NAME, FUNC(h46505_device::screen_update));
- screen.set_screen_update(MC6845_NAME, FUNC(mc6845_device::screen_update));
-
- PALETTE(config, m_palette).set_entries(4);
-
- HD6845S(config, m_crtc, XTAL(19'170'000) / 16); // clock and divider are guesswork
- m_crtc->set_screen(EPC_MDA_SCREEN);
- m_crtc->set_show_border_area(false);
- m_crtc->set_char_width(8);
-
- m_crtc->set_update_row_callback(FUNC(isa8_epc_mda_device::crtc_update_row));
- m_crtc->out_hsync_callback().set(FUNC(isa8_epc_mda_device::hsync_changed));
- m_crtc->out_vsync_callback().set(FUNC(isa8_epc_mda_device::vsync_changed));
-
- //MCFG_GFXDECODE_ADD("gfxdecode", "palette", pcepc)
-}
-
-//-------------------------------------------------
-// rom_region - device-specific ROM region
-//-------------------------------------------------
-
-const tiny_rom_entry *isa8_epc_mda_device::device_rom_region() const
-{
- return ROM_NAME( epc );
-}
-
-//**************************************************************************
-// LIVE DEVICE
-//**************************************************************************
-
-//-------------------------------------------------
-// isa8_epc_mda_device - constructor
-//-------------------------------------------------
-
-isa8_epc_mda_device::isa8_epc_mda_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
- isa8_mda_device(mconfig, ISA8_EPC_MDA, tag, owner, clock),
- m_soft_chr_gen(nullptr),
- m_s1(*this, "S1"),
- m_color_mode(0),
- m_mode_control2(0),
- m_screen(*this, EPC_MDA_SCREEN),
- m_io_monitor(*this, "MONITOR"),
- m_chargen(*this, "chargen"),
- m_installed(false)
-{
-}
-
-//-------------------------------------------------
-// device_start - device-specific startup
-//-------------------------------------------------
-
-void isa8_epc_mda_device::device_start()
-{
- if (m_palette != nullptr && !m_palette->started())
- throw device_missing_dependencies();
-
- /* Palette for use with the Ericsson Amber Monochrome HR CRT monitor 3111, P3 phospor 602nm 255,183, 0 */
- m_3111_pal[0] = rgb_t( 0, 0, 0); // black
- m_3111_pal[1] = rgb_t( 143, 103, 0); // dim
- m_3111_pal[2] = rgb_t( 191, 137, 0); // normal
- m_3111_pal[3] = rgb_t( 255, 183, 0); // bright
-
- /* Palette for use with the Ericsson B&W Monochrome HR CRT monitor 3712/3715 */
- m_371x_pal[0] = rgb_t( 0, 0, 0); // black
- m_371x_pal[1] = rgb_t( 143, 143, 143); // dim
- m_371x_pal[2] = rgb_t( 191, 191, 191); // normal
- m_371x_pal[3] = rgb_t( 255, 255, 255); // bright
-
- /* Init a default palette */
- m_pal = &m_3111_pal; // In case screen starts rendering before device_reset where we read the settings
-
- m_videoram.resize(0x8000);
- set_isa_device();
- m_installed = false;
- m_hd6845s = subdevice<hd6845s_device>(MC6845_NAME);
-}
-
-void isa8_epc_mda_device::device_reset()
-{
- m_framecnt = 0;
- m_mode_control = 0;
- m_vsync = 0;
- m_hsync = 0;
-
- m_color_mode = m_s1->read();
- LOGSETUP("%s: m_color_mode:%02x\n", FUNCNAME, m_color_mode);
- m_pal = (m_io_monitor-> read() & 1) == 1 ? &m_371x_pal : &m_3111_pal;
- m_vmode = 0;
-
- if (m_installed == false)
- {
- m_isa->install_device(0x3b0, 0x3bb, read8_delegate(*this, FUNC(isa8_epc_mda_device::io_read)), write8_delegate(*this, FUNC(isa8_epc_mda_device::io_write)));
- // The Ericsson PC MDA card 1070 doesn't respond to the LPT device addresses 3bc-3be because
- // the LPT device is on the main PCB, but requires 3bf for mode register 2 so need to create a hole here - needs verification on hw as docs are wrong
- m_isa->install_device(0x3bf, 0x3bf, read8_delegate(*this, FUNC(isa8_epc_mda_device::io_read2)), write8_delegate(*this, FUNC(isa8_epc_mda_device::io_write2)));
- m_isa->install_bank(0xb0000, 0xb7fff, "bank_epc", &m_videoram[0]); // Monochrome emulation mode VRAM address
-
- // This check allows a color monitor adapter to be installed at this address range if color emulation is disabled
- if (m_color_mode & 1)
- {
- m_isa->install_device(0x3d0, 0x3df, read8_delegate(*this, FUNC(isa8_epc_mda_device::io_read)), write8_delegate(*this, FUNC(isa8_epc_mda_device::io_write)));
- m_isa->install_bank(0xb8000, 0xbffff, "bank_epc", &m_videoram[0]); // Color emulation mode VRAM address, but same 32KB areas as there are only this amount on the board
- }
- m_installed = true;
- }
-}
-
-/*
- * Register Address table from the manual
- * Ericsson name MDA mode CGA mode Standard name
- *-------------------------------------------------------------------------------
- * 6845 Address Registers 0x3b4 0x3d4 wo CRT Index reg
- * 6845 Data Registers 0x3b5 0x3d5 wo CRT Data reg
- * Mode Register 1 0x3b8 0x3d8 rw MDA/CGA mode reg (bit 0,1 & 4 incompatible)
- * Mode Register 2 0x3bf 0x3df rw CRT/CPU page reg (incompatible w PCjr only)
- * Status Register 0x3ba 0x3da r CGA/MDA status reg (incompatible)
- * w EGA/VGA feature ccontrol reg (not used by this board)
- *
- * NOTE: The LPT device resides on the Ericsson PC main board in the 3bc-3be address range
- */
-
-WRITE8_MEMBER(isa8_epc_mda_device::io_write2 )
-{
- io_write(space, offset + 0x0f, data);
-}
-
-WRITE8_MEMBER(isa8_epc_mda_device::io_write )
-{
- LOG("%s: %04x <- %02x\n", FUNCNAME, offset, data);
- switch( offset )
- {
- case 0x04:
- //LOGSETUP(" - HD6845S address write\n");
- m_hd6845s->address_w( data );
- break;
- case 0x05:
- //LOGSETUP(" - HD6845S register write\n");
- m_hd6845s->register_w( data );
- break;
- case 0x08: // Mode 1 reg
- LOGMODE(" - Mode register 1 write: %02x\n", data);
- LOGMODE(" MSB attribute: %s\n", (data & 0x20) == 0 ? "intensity" : "blink");
- LOGMODE(" Horizontal px: %s\n", (data & 0x10) == 0 ? "320/LR" : "640/HR");
- LOGMODE(" Video : %s\n", (data & 0x08) == 0 ? "Disabled" : "Enabled");
- LOGMODE(" Mode : %s\n", (data & 0x02) == 0 ? "Text" : "Graphics");
- LOGMODE(" Text columns : %d\n", (data & 0x01) == 0 ? 40 : 80);
- m_mode_control = data;
- m_vmode &= ~(VM_GRAPH | VM_COLS80 | VM_HOR640);
- m_vmode |= ((m_mode_control & 0x01) ? VM_COLS80 : 0);
- m_vmode |= ((m_mode_control & 0x02) ? VM_GRAPH : 0);
- m_vmode |= ((m_mode_control & 0x10) ? VM_HOR640 : 0);
- m_update_row_type = ((data & 0x20) == 0 ? MDA_LOWRES_TEXT_INTEN : MDA_LOWRES_TEXT_BLINK);
- {
- rectangle rect(0, get_xres() - 1, 0, get_yres() -1);
- m_screen->configure(get_xres(), get_yres(), rect, HZ_TO_ATTOSECONDS(50));
- }
- LOGMODE("Video Mode:%02x\n\n", m_vmode);
- break;
- case 0x0f: // Mode 2 reg
- LOGMODE(" - Mode register 2 write: %02x\n", data);
- LOGMODE(" Vertical px : %s\n", (data & MR2_VER400) == 0 ? "200" : "400");
- LOGMODE(" Character set: %s\n", (data & MR2_CHRSET) == 0 ? "0" : "1");
- LOGMODE(" Emulated : %s\n", (data & MR2_COLEMU) == 0 ? "Color" : "Monochrome");
- m_mode_control2 = data;
- m_vmode &= ~(VM_MONO | VM_VER400);
- m_vmode |= ((m_mode_control2 & 0x04) ? VM_MONO : 0);
- m_vmode |= ((m_mode_control2 & 0x80) ? VM_VER400 : 0);
- {
- rectangle rect(0, get_xres() - 1, 0, get_yres() -1);
- m_screen->configure(get_xres(), get_yres(), rect, HZ_TO_ATTOSECONDS(50));
- }
- LOGMODE("Video Mode:%02x\n\n", m_vmode);
- break;
- default:
- LOG("EPC MDA: io_write at wrong offset:%02x\n", offset);
- }
-}
-
-READ8_MEMBER( isa8_epc_mda_device::io_read2 )
-{
- return io_read(space, offset + 0x0f);
-}
-
-READ8_MEMBER( isa8_epc_mda_device::io_read )
-{
- LOG("%s: %04x <- ???\n", FUNCNAME, offset);
- int data = 0xff;
- switch( offset )
- {
- case 0x04:
- LOGR(" - hd6845s address read\n");
- break;
- case 0x05:
- LOGR(" - hd6845s register read\n");
- data = m_hd6845s->register_r();
- break;
- case 0x08: // Mode 1 reg
- data = m_mode_control;
- LOGMODE(" - Mode register 1 read: %02x\n", data);
- break;
- case 0x0a: // Status reg: b7-6=00 board ID; b3 vert retrace; b0 horiz retrace; b5,4,2,1 unused
- data = (m_vsync != 0 ? 0x08 : 0x00) | (m_hsync != 0 ? 0x01 : 0x00);
- LOGSTAT(" - Status register read: %02x\n", data);
- break;
- case 0x0f: // Mode 2 reg
- data = m_mode_control2;
- LOGMODE(" - Mode register 2 read: %02x\n", data);
- break;
- default:
- LOG("EPC MDA: io_read at wrong offset:%02x\n", offset);
- logerror("EPC MDA: io_read at wrong offset:%02x\n", offset);
- }
- LOG(" !!!: %04x <- %02x\n", offset, data);
- return data;
-}
-
-inline int isa8_epc_mda_device::get_xres()
-{
- return (m_vmode & VM_GRAPH) ? ( (m_vmode & VM_HOR640) ? 640 : 320 ) : 720;
-}
-
-inline int isa8_epc_mda_device::get_yres()
-{
- return (m_vmode & VM_GRAPH) ? ( (m_vmode & VM_VER400) ? 400 : 200 ) : 400;
-}
-
-MC6845_UPDATE_ROW(isa8_epc_mda_device::crtc_update_row)
-{
- uint32_t *p = &bitmap.pix32(y);
- uint16_t chr_base = ra;
- int i;
-
- // Get som debug data from a couple of rows now and then
- if ( y < (16 * 0 + 0x20) && (m_framecnt & 0xff) == 0 )
- {
- LOGROW("%11.6f %s\n - y:%d chr_base:%d ra:%d ma:%d x_count:%d\n", machine().time().as_double(), FUNCNAME,
- y, y % 16, ra, ma, x_count);
- }
-
- // Video Off handling
- if ((m_mode_control & MR1_VIDEO) == 0)
- {
- for (int i = 0; i < get_xres(); i++)
- {
- bitmap.pix32(y, i) = rgb_t::black();
- }
- }
-
- // Graphic modes using only pixeldata, soft fonts are 8x8 or 8x16 but this is transparant to the code
- else if ((m_vmode & VM_GRAPH) != 0)
- {
- logerror("EPC MDA: graphic modes not supported yet\n");
- }
-
- // Text modes using one of two 9x16 fonts in character rom
- else
- {
- // Adjust row pointer if in monochrome text mode as we insert two scanlines per row of characters (see below)
- if (m_vmode & VM_MONO)
- {
- p = &bitmap.pix32((y / 14) * 16 + y % 14);
- }
-
- // Loop over each character in a row
- for ( i = 0; i < x_count; i++ )
- {
- uint16_t offset = ( ( ma + i ) << 1 ) & 0x0FFF;
- uint8_t chr = m_videoram[ offset ];
- uint8_t attr = m_videoram[ offset + 1 ];
- uint8_t data = m_chargen[ ((m_mode_control2 & MR2_CHRSET) ? 0x1000 : 0) + chr_base + chr * 16];
-
- // Default to light text on dark background
- uint8_t fg = 2;
- uint8_t bg = 0;
-
- if (y == 0 && i == 0) LOGCHRG(" - Offset: %04x Chr: '%c'[%02x] Attr: %02x Chr_base: %04x\n", offset, chr, chr, attr, chr_base);
-
- // Prepare some special monochrome emulation cases
- if ( m_vmode & VM_MONO)
- {
- // Handle invisible characters
- if ( (attr & (ATTR_FOREG | ATTR_BACKG)) == 0 )
- {
- data = 0x00;
- }
- // Handle reversed characters
- else if ( (attr & (ATTR_BACKG)) == ATTR_BACKG )
- {
- fg = 0;
- bg = 2;
- }
- }
- else // prepare some special color emulation cases
- {
- // Handle invisible characters
- if ( (attr & (ATTR_FOREG)) == ((attr & ATTR_BACKG) >> 4))
- {
- data = 0x00;
- }
- // Handle reversed characters
- else if ( (attr & ATTR_BACKG) == ATTR_BACKG ||
- (attr & ATTR_FOREG) == 0 )
- {
- fg = 0;
- bg = 2;
- }
- }
-
- // Handle intense foreground
- if ((attr & ATTR_INTEN) != 0 && fg == 2)
- {
- fg = 3;
- }
-
- // Handle intense background if blinking is disabled
- if ((m_mode_control & MR1_BLINK) == 0 &&
- (attr & ATTR_BLINK) != 0 && bg == 2)
- {
- bg = 3;
- }
-
- // Handle cursor and blinks
- if ( i == (cursor_x))
- {
- if ( m_framecnt & 0x08 )
- {
- data = 0xFF;
- }
- }
- else
- {
- if ( (m_mode_control & MR1_BLINK) &&
- ( attr & ATTR_BLINK ) && ( m_framecnt & 0x10 ) )
- {
- data = 0x00;
- }
- }
-
- *p = (*m_pal)[( data & 0x80 ) ? fg : bg]; p++;
- *p = (*m_pal)[( data & 0x40 ) ? fg : bg]; p++;
- *p = (*m_pal)[( data & 0x20 ) ? fg : bg]; p++;
- *p = (*m_pal)[( data & 0x10 ) ? fg : bg]; p++;
- *p = (*m_pal)[( data & 0x08 ) ? fg : bg]; p++;
- *p = (*m_pal)[( data & 0x04 ) ? fg : bg]; p++;
- *p = (*m_pal)[( data & 0x02 ) ? fg : bg]; p++;
- *p = (*m_pal)[( data & 0x01 ) ? fg : bg]; p++;
- if (chr >= 0xc0 && chr <= 0xdf)
- *p = (*m_pal)[( data & 0x01 ) ? fg : bg]; // 9th pixel col is a copy of col 8
- else
- *p = (*m_pal)[bg]; // 9th pixel col is just background
- p++;
-
- // Insert two extra scanlines in monochrome text mode to get 400 lines and support underline, needs verification on actual hardware.
- // The technical manual says that the character box is 9x16 pixels in 80x25 character mode which equals 720x400 resolution but the
- // CRTC calls back for only 350 lines. Assumption is that there is hardware adding these lines and that handles underlining. In color
- // emulation text mode all 400 lines are called for in 80x25 and this mode does not support underlining according to the technical manual
- if ( ra == 13 && (m_vmode & VM_MONO) )
- {
- uint16_t row = ra + (y / 14) * 16; // Calculate correct row number including the extra 2 lines per each row of characters
- for ( int j = 0; j < 9; j++)
- {
- if (chr >= 0xb3 && chr <= 0xdf) // Handle the meta graphics characters
- {
- bitmap.pix32(row + 1, j + i * 9) = (*m_pal)[( data & (0x80 >> j) ) || (j == 8 && (data & 0x01)) ? fg : bg];
- bitmap.pix32(row + 2, j + i * 9) = (*m_pal)[( data & (0x80 >> j) ) || (j == 8 && (data & 0x01)) ? fg : bg];
- }
- else
- {
- // Handle underline
- bitmap.pix32(row + 1, j + i * 9) =(*m_pal)[( attr & ATTR_FOREG ) == ATTR_ULINE ? fg : bg];
- bitmap.pix32(row + 2, j + i * 9) = (*m_pal)[bg];
- }
- }
- }
- }
- }
-}
-
-//--------------------------------------------------------------------
-// Port definitions
-//--------------------------------------------------------------------
-static INPUT_PORTS_START( epc_mda )
- PORT_START( "S1" )
- PORT_DIPNAME( 0x01, 0x00, "Color emulation") PORT_DIPLOCATION("S1:1")
- PORT_DIPSETTING( 0x00, "Disabled" )
- PORT_DIPSETTING( 0x01, "Enabled" )
- PORT_DIPUNUSED_DIPLOC(0x02, 0x02, "S1:2")
-
- PORT_START( "MONITOR" )
- PORT_CONFNAME( 0x01, 0x00, "Ericsson Monochrome HR Monitors") PORT_CHANGED_MEMBER( DEVICE_SELF, isa8_epc_mda_device, monitor_changed, 0 )
- PORT_CONFSETTING( 0x00, "Amber 3111")
- PORT_CONFSETTING( 0x01, "B&W 3712/3715")
-INPUT_PORTS_END
-
-INPUT_CHANGED_MEMBER( isa8_epc_mda_device::monitor_changed )
-{
- if ((m_io_monitor->read() & 1) == 1)
- {
- m_pal = &m_371x_pal;
- }
- else
- {
- m_pal = &m_3111_pal;
- }
-}
-
-ioport_constructor isa8_epc_mda_device::device_input_ports() const
-{
- return INPUT_PORTS_NAME( epc_mda );
-}