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Diffstat (limited to 'src/mame/drivers/ms6102.cpp')
-rw-r--r-- | src/mame/drivers/ms6102.cpp | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/src/mame/drivers/ms6102.cpp b/src/mame/drivers/ms6102.cpp new file mode 100644 index 00000000000..1dc9eae89e6 --- /dev/null +++ b/src/mame/drivers/ms6102.cpp @@ -0,0 +1,292 @@ +// license:BSD-3-Clause +// copyright-holders:Sergey Svishchev +/*************************************************************************** + + Elektronika MS6102.02 terminal + + https://goo.gl/photos/xJManS26QTxG1T7M7 + Schematics + + http://sfrolov.livejournal.com/110770.html + Photos + + To do: + - why DMA stops after 2nd char on each row? + - what does second 8275 do? + - what is the layout of chargen ROM? + - keyboard (MS7002) + + Chips: + - DD5 - KR580WM80A (8080 clone) - CPU + - DD7 - KR580WT57 (8257 clone) - DMAC + - DD9 - KR1601RR1 (ER2401 clone) - NVRAM + - DD21 - KR581WA1A (TR6402 clone) - UART + - DD55, DD56 - KR580WG75 (8275 clone) - CRTC + - DD59 - KR556RT5 - alternate chargen ROM + - DD64 - K556RT4 - chargen layout table ROM + - DD70 - K555RE4 - default chargen ROM + - DD75 - KR580WI53 (8253 clone) - timer + - DD76 - KR580WW51A (8251 clone) - UART + - DD80 - K589IK14 (8214 clone) - interrupt control unit + +****************************************************************************/ + +#include "emu.h" + +#include "bus/rs232/rs232.h" +#include "cpu/i8085/i8085.h" +#include "machine/ay31015.h" +#include "machine/clock.h" +#include "machine/i8214.h" +#include "machine/i8251.h" +#include "machine/i8257.h" +#include "machine/keyboard.h" +#include "machine/nvram.h" +#include "machine/pit8253.h" +#include "video/i8275.h" + +#include "screen.h" + +#define LOG_GENERAL (1U << 0) + +//#define VERBOSE (LOG_GENERAL) +//#define LOG_OUTPUT_FUNC printf +#include "logmacro.h" + + +class ms6102_state : public driver_device +{ +public: + ms6102_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag) + , m_p_videoram(*this, "videoram") + , m_maincpu(*this, "maincpu") + , m_nvram(*this, "nvram") + , m_pic(*this, "i8214") + , m_dma8257(*this, "dma8257") + , m_i8251(*this, "i8251") + , m_rs232(*this, "rs232") + , m_screen(*this, "screen") + , m_palette(*this, "palette") + , m_p_chargen(*this, "chargen") + , m_p_charmap(*this, "charmap") + { } + + virtual void machine_reset() override; + virtual void machine_start() override; + uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); + + template <unsigned N> DECLARE_WRITE_LINE_MEMBER(irq) { m_pic->r_w(N, state?0:1); } + + I8275_DRAW_CHARACTER_MEMBER(display_pixels); + + DECLARE_WRITE_LINE_MEMBER(hrq_w); + + DECLARE_WRITE8_MEMBER(pic_w); + IRQ_CALLBACK_MEMBER(ms6102_int_ack); + + DECLARE_READ8_MEMBER(memory_read_byte); + + DECLARE_READ8_MEMBER(misc_r); + DECLARE_READ8_MEMBER(kbd_get); + void kbd_put(u8 data); + +private: + bool m_kbd_ready; + uint8_t m_kbd_data; + + required_shared_ptr<uint8_t> m_p_videoram; + required_device<i8080_cpu_device> m_maincpu; + required_device<nvram_device> m_nvram; + required_device<i8214_device> m_pic; + required_device<i8257_device> m_dma8257; + required_device<i8251_device> m_i8251; + required_device<rs232_port_device> m_rs232; + required_device<screen_device> m_screen; + required_device<palette_device> m_palette; + required_region_ptr<u8> m_p_chargen; + required_region_ptr<u8> m_p_charmap; +}; + +static ADDRESS_MAP_START(ms6102_mem, AS_PROGRAM, 8, ms6102_state) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE (0x0000, 0x2fff) AM_ROM + AM_RANGE (0x3800, 0x3bff) AM_RAM AM_SHARE("nvram") + AM_RANGE (0xc000, 0xffff) AM_RAM AM_SHARE("videoram") +ADDRESS_MAP_END + +static ADDRESS_MAP_START(ms6102_io, AS_IO, 8, ms6102_state) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE (0x00, 0x00) AM_DEVREADWRITE("i8251", i8251_device, data_r, data_w) + AM_RANGE (0x01, 0x01) AM_DEVREADWRITE("i8251", i8251_device, status_r, control_w) + AM_RANGE (0x10, 0x18) AM_DEVREADWRITE("dma8257", i8257_device, read, write) + AM_RANGE (0x20, 0x23) AM_DEVREADWRITE("pit8253", pit8253_device, read, write) + AM_RANGE (0x30, 0x3f) AM_READ(kbd_get) + AM_RANGE (0x40, 0x41) AM_DEVREADWRITE("i8275", i8275_device, read, write) + AM_RANGE (0x50, 0x5f) AM_NOP // video disable? + AM_RANGE (0x60, 0x6f) AM_WRITE(pic_w) + AM_RANGE (0x70, 0x7f) AM_READ(misc_r) +ADDRESS_MAP_END + +static const gfx_layout ms6102_charlayout = +{ + 7, 8, + RGN_FRAC(1,1), + 1, + { 0 }, + { STEP8(1,1) }, + { 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 0*8, 1*8, }, + 8*8 +}; + +static GFXDECODE_START(ms6102) + GFXDECODE_ENTRY("chargen", 0x0000, ms6102_charlayout, 0, 1) +GFXDECODE_END + + +WRITE_LINE_MEMBER(ms6102_state::hrq_w) +{ + /* HACK - this should be connected to the HOLD line of 8080 */ + m_maincpu->set_input_line(INPUT_LINE_HALT, state); + + /* HACK - this should be connected to the HLDA line of 8080 */ + m_dma8257->hlda_w(state); +} + +READ8_MEMBER(ms6102_state::memory_read_byte) +{ + return m_maincpu->space(AS_PROGRAM).read_byte(offset); +} + +I8275_DRAW_CHARACTER_MEMBER(ms6102_state::display_pixels) +{ + int i; + const rgb_t *palette = m_palette->palette()->entry_list_raw(); + u8 dd64 = m_p_charmap[((linecount >> 1) & 7) + ((charcode >> 2) & 0x18) + ((lineattr & 2) << 4)] ^ 0xff; + u8 gfx = m_p_chargen[(linecount & 3) + ((dd64 & 1) << 2) + ((charcode & 0x1f) << 3) + ((dd64 & 0xe) << 7)]; + + if (lten) + { + gfx = 0xff; + } + for (i = 0; i < 8; i++) + { + bitmap.pix32(y, x + i) = palette[(gfx >> (7 - i)) & 1 ? (hlgt ? 2 : 1) : 0]; + } +} + + +READ8_MEMBER(ms6102_state::misc_r) +{ + return m_kbd_ready << 6; +} + +READ8_MEMBER(ms6102_state::kbd_get) +{ + return m_kbd_data; +} + +void ms6102_state::kbd_put(u8 data) +{ + m_kbd_ready = true; + m_kbd_data = data; + m_pic->r_w(1, 0); +} + + +WRITE8_MEMBER(ms6102_state::pic_w) +{ + m_pic->b_w(data & 7); + m_pic->sgs_w(BIT(data, 3)); +} + +IRQ_CALLBACK_MEMBER(ms6102_state::ms6102_int_ack) +{ + return 0xc7 | (m_pic->a_r() << 3); +} + + +void ms6102_state::machine_reset() +{ + m_kbd_ready = false; +} + +void ms6102_state::machine_start() +{ + m_pic->etlg_w(1); +} + + +static MACHINE_CONFIG_START( ms6102 ) + MCFG_CPU_ADD("maincpu", I8080, XTAL_18_432MHz / 9) + MCFG_CPU_PROGRAM_MAP(ms6102_mem) + MCFG_CPU_IO_MAP(ms6102_io) + MCFG_I8085A_INTE(DEVWRITELINE("i8214", i8214_device, inte_w)) + MCFG_CPU_IRQ_ACKNOWLEDGE_DRIVER(ms6102_state, ms6102_int_ack) + + MCFG_NVRAM_ADD_0FILL("nvram") + + MCFG_DEVICE_ADD("i8214", I8214, XTAL_18_432MHz / 9) + MCFG_I8214_INT_CALLBACK(INPUTLINE("maincpu", I8085_INTR_LINE)) + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_UPDATE_DEVICE("i8275", i8275_device, screen_update) + MCFG_SCREEN_REFRESH_RATE(50) + MCFG_SCREEN_SIZE(784, 375) + MCFG_SCREEN_VISIBLE_AREA(100, 100+80*8-1, 7, 7+24*15-1) + MCFG_GFXDECODE_ADD("gfxdecode", "palette", ms6102) + MCFG_PALETTE_ADD_MONOCHROME_HIGHLIGHT("palette") + + MCFG_DEVICE_ADD("dma8257", I8257, XTAL_18_432MHz / 9) + MCFG_I8257_OUT_HRQ_CB(WRITELINE(ms6102_state, hrq_w)) + MCFG_I8257_IN_MEMR_CB(READ8(ms6102_state, memory_read_byte)) + MCFG_I8257_OUT_IOW_2_CB(DEVWRITE8("i8275", i8275_device, dack_w)) + + MCFG_DEVICE_ADD("i8275", I8275, XTAL_16_4MHz / 8) // XXX + MCFG_I8275_CHARACTER_WIDTH(8) + MCFG_I8275_DRAW_CHARACTER_CALLBACK_OWNER(ms6102_state, display_pixels) + MCFG_I8275_DRQ_CALLBACK(DEVWRITELINE("dma8257", i8257_device, dreq2_w)) + MCFG_I8275_IRQ_CALLBACK(WRITELINE(ms6102_state, irq<5>)) + + // keyboard + MCFG_DEVICE_ADD("589wa1", AY31015, 0) + + MCFG_DEVICE_ADD("keyboard", GENERIC_KEYBOARD, 0) + MCFG_GENERIC_KEYBOARD_CB(PUT(ms6102_state, kbd_put)) + + // serial connection to host + MCFG_DEVICE_ADD("i8251", I8251, 0) + MCFG_I8251_TXD_HANDLER(DEVWRITELINE("rs232", rs232_port_device, write_txd)) + MCFG_I8251_RXRDY_HANDLER(WRITELINE(ms6102_state, irq<3>)) + + MCFG_RS232_PORT_ADD("rs232", default_rs232_devices, "null_modem") + MCFG_RS232_RXD_HANDLER(DEVWRITELINE("i8251", i8251_device, write_rxd)) + + MCFG_DEVICE_ADD("pit8253", PIT8253, 0) + MCFG_PIT8253_CLK0(XTAL_16_4MHz / 9) + MCFG_PIT8253_OUT0_HANDLER(DEVWRITELINE("i8251", i8251_device, write_txc)) + MCFG_PIT8253_CLK1(XTAL_16_4MHz / 9) + MCFG_PIT8253_OUT1_HANDLER(DEVWRITELINE("i8251", i8251_device, write_rxc)) +MACHINE_CONFIG_END + +ROM_START( ms6102 ) + ROM_REGION(0x3000, "maincpu", ROMREGION_ERASE00) + ROM_LOAD("MC6102_02_KS573RF2_DD26", 0x0000, 0x0800, CRC(f96ba806) SHA1(60d155b781e97e86d31dc2194ad367030470eeb6)) + ROM_LOAD("MC6102_02_KS573RF2_DD30", 0x0800, 0x0800, CRC(1d69ba62) SHA1(bf7d19400fe606239ce8a057850cf4c63ff4cdb2)) + ROM_LOAD("MC6102_02_KS573RF2_0034", 0x1000, 0x0800, CRC(4bce121a) SHA1(e97c635c2fab70a71a31db3b53284209b5881f2c)) + ROM_LOAD("MC6102_02_KS573RF2_0037", 0x1800, 0x0800, CRC(1b22543f) SHA1(fc6cc54baf3abadca30dfaf39a50cae7fbf601b2)) + ROM_LOAD("MC6102_02_KS573RF2_0045", 0x2000, 0x0800, CRC(fd741cfe) SHA1(153abb57ca4833286811082ff50c7b36136274dc)) + ROM_LOAD("MC6102_02_KS573RF2_DD49", 0x2800, 0x0800, CRC(748f6cee) SHA1(a35e6495ea108824f2f1f9907f5e651174e9cf15)) + + ROM_REGION(0x0800, "chargen", ROMREGION_ERASE00) + ROM_LOAD("MC6102_02_K555RE4_chargen", 0x0000, 0x0800, CRC(b0e3546b) SHA1(25aca264cc64f368ffcefdfd356120a314a44947)) + + ROM_REGION(0x0100, "charmap", ROMREGION_ERASE00) + ROM_LOAD("MC6102_02_K556RT4_D64", 0x0000, 0x0100, CRC(a59fdaa7) SHA1(0851a8b12e838e8f7e5ce840a0262facce303442)) +ROM_END + +/* Driver */ + +/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ +COMP( 1984, ms6102, 0, 0, ms6102, 0, ms6102_state, 0, "Elektronika", "MS 6102.02", MACHINE_IS_SKELETON) |