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Diffstat (limited to 'src/devices/bus/isa/mda.cpp')
-rw-r--r-- | src/devices/bus/isa/mda.cpp | 519 |
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 ); -} |