diff options
Diffstat (limited to 'src/mame/drivers/sdk86.c')
-rw-r--r-- | src/mame/drivers/sdk86.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/src/mame/drivers/sdk86.c b/src/mame/drivers/sdk86.c new file mode 100644 index 00000000000..c895211950a --- /dev/null +++ b/src/mame/drivers/sdk86.c @@ -0,0 +1,212 @@ +// license:BSD-3-Clause +// copyright-holders:Miodrag Milanovic, Jonathan Gevaryahu, Robbbert +/*************************************************************************** + + Intel SDK-86 + + 12/05/2009 Skeleton driver by Micko + 29/11/2009 Some fleshing out by Lord Nightmare + 22/06/2011 Working [Robbbert] + + TODO: + Add optional 2x 8255A port read/write logging + + + +This is an evaluation kit for the 8086 cpu. + +There is no speaker or storage facility in the standard kit. + +Download the User Manual to get the operating procedures. +The user manual is available from: http://www.bitsavers.org/pdf/intel/8086/9800698A_SDK-86_Users_Man_Apr79.pdf + +ToDo: +- Artwork +- Add INTR and RESET keys + +****************************************************************************/ + +#include "bus/rs232/rs232.h" +#include "cpu/i86/i86.h" +#include "machine/clock.h" +#include "machine/i8251.h" +#include "machine/i8279.h" +#include "sdk86.lh" + +#define I8251_TAG "i8251" +#define RS232_TAG "rs232" + + +class sdk86_state : public driver_device +{ +public: + sdk86_state(const machine_config &mconfig, device_type type, const char *tag) : + driver_device(mconfig, type, tag) , + m_maincpu(*this, "maincpu"), + m_usart(*this, I8251_TAG) + { + } + + required_device<cpu_device> m_maincpu; + required_device<i8251_device> m_usart; + + DECLARE_WRITE8_MEMBER(scanlines_w); + DECLARE_WRITE8_MEMBER(digit_w); + DECLARE_READ8_MEMBER(kbd_r); + + DECLARE_WRITE_LINE_MEMBER( write_usart_clock ); + + UINT8 m_digit; +}; + +static ADDRESS_MAP_START(sdk86_mem, AS_PROGRAM, 16, sdk86_state) + AM_RANGE(0x00000, 0x00fff) AM_RAM //2K standard, or 4k (board fully populated) + AM_RANGE(0xfe000, 0xfffff) AM_ROM +ADDRESS_MAP_END + +static ADDRESS_MAP_START(sdk86_io, AS_IO, 16, sdk86_state) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE(0xfff0, 0xfff1) AM_MIRROR(4) AM_DEVREADWRITE8(I8251_TAG, i8251_device, data_r, data_w, 0xff) + AM_RANGE(0xfff2, 0xfff3) AM_MIRROR(4) AM_DEVREADWRITE8(I8251_TAG, i8251_device, status_r, control_w, 0xff) + AM_RANGE(0xffe8, 0xffe9) AM_MIRROR(4) AM_DEVREADWRITE8("i8279", i8279_device, data_r, data_w, 0xff) + AM_RANGE(0xffea, 0xffeb) AM_MIRROR(4) AM_DEVREADWRITE8("i8279", i8279_device, status_r, cmd_w, 0xff) + // FFF8-FFFF = 2 x 8255A i/o chips. chip 1 uses the odd addresses, chip 2 uses the even addresses. + // ports are A,B,C,control in that order. +ADDRESS_MAP_END + +/* Input ports */ +static INPUT_PORTS_START( sdk86 ) + PORT_START("X0") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0 EB/AX") PORT_CODE(KEYCODE_0) PORT_CHAR('0') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1 ER/BX") PORT_CODE(KEYCODE_1) PORT_CHAR('1') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2 GO/CX") PORT_CODE(KEYCODE_2) PORT_CHAR('2') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3 ST/DX") PORT_CODE(KEYCODE_3) PORT_CHAR('3') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4 IB/SP") PORT_CODE(KEYCODE_4) PORT_CHAR('4') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5 OB/BP") PORT_CODE(KEYCODE_5) PORT_CHAR('5') + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6 MV/SI") PORT_CODE(KEYCODE_6) PORT_CHAR('6') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7 EW/DI") PORT_CODE(KEYCODE_7) PORT_CHAR('7') + + PORT_START("X1") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8 IW/CS") PORT_CODE(KEYCODE_8) PORT_CHAR('8') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9 OW/DS") PORT_CODE(KEYCODE_9) PORT_CHAR('9') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A SS") PORT_CODE(KEYCODE_A) PORT_CHAR('A') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B ES") PORT_CODE(KEYCODE_B) PORT_CHAR('B') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C IP") PORT_CODE(KEYCODE_C) PORT_CHAR('C') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D FL") PORT_CODE(KEYCODE_D) PORT_CHAR('D') + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('E') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('F') + + PORT_START("X2") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(".") PORT_CODE(KEYCODE_STOP) PORT_CODE(KEYCODE_X) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(",") PORT_CODE(KEYCODE_COMMA) PORT_CODE(KEYCODE_UP) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("-") PORT_CODE(KEYCODE_MINUS) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("+") PORT_CODE(KEYCODE_EQUALS) + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(":") PORT_CODE(KEYCODE_COLON) + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("REG") PORT_CODE(KEYCODE_R) + PORT_BIT(0xC0, IP_ACTIVE_LOW, IPT_UNUSED) +INPUT_PORTS_END + + +WRITE8_MEMBER( sdk86_state::scanlines_w ) +{ + m_digit = data; +} + +WRITE8_MEMBER( sdk86_state::digit_w ) +{ + if (m_digit < 8) + output_set_digit_value(m_digit, data); +} + +READ8_MEMBER( sdk86_state::kbd_r ) +{ + UINT8 data = 0xff; + + if (m_digit < 3) + { + char kbdrow[6]; + sprintf(kbdrow,"X%X",m_digit); + data = ioport(kbdrow)->read(); + } + return data; +} + +WRITE_LINE_MEMBER( sdk86_state::write_usart_clock ) +{ + m_usart->write_txc(state); + m_usart->write_rxc(state); +} + +static DEVICE_INPUT_DEFAULTS_START( terminal ) + DEVICE_INPUT_DEFAULTS( "RS232_TXBAUD", 0xff, RS232_BAUD_4800 ) + DEVICE_INPUT_DEFAULTS( "RS232_RXBAUD", 0xff, RS232_BAUD_4800 ) + DEVICE_INPUT_DEFAULTS( "RS232_STARTBITS", 0xff, RS232_STARTBITS_1 ) + DEVICE_INPUT_DEFAULTS( "RS232_DATABITS", 0xff, RS232_DATABITS_8 ) + DEVICE_INPUT_DEFAULTS( "RS232_PARITY", 0xff, RS232_PARITY_NONE ) + DEVICE_INPUT_DEFAULTS( "RS232_STOPBITS", 0xff, RS232_STOPBITS_2 ) +DEVICE_INPUT_DEFAULTS_END + +static MACHINE_CONFIG_START( sdk86, sdk86_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", I8086, XTAL_14_7456MHz/3) /* divided down by i8284 clock generator; jumper selection allows it to be slowed to 2.5MHz, hence changing divider from 3 to 6 */ + MCFG_CPU_PROGRAM_MAP(sdk86_mem) + MCFG_CPU_IO_MAP(sdk86_io) + + /* video hardware */ + MCFG_DEFAULT_LAYOUT(layout_sdk86) + + /* Devices */ + MCFG_DEVICE_ADD(I8251_TAG, I8251, 0) + MCFG_I8251_TXD_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_txd)) + MCFG_I8251_DTR_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_dtr)) + MCFG_I8251_RTS_HANDLER(DEVWRITELINE(I8251_TAG, i8251_device, write_cts)) + + MCFG_RS232_PORT_ADD(RS232_TAG, default_rs232_devices, "terminal") + MCFG_RS232_RXD_HANDLER(DEVWRITELINE(I8251_TAG, i8251_device, write_rxd)) + MCFG_RS232_DSR_HANDLER(DEVWRITELINE(I8251_TAG, i8251_device, write_dsr)) + MCFG_DEVICE_CARD_DEVICE_INPUT_DEFAULTS("terminal", terminal) + + MCFG_DEVICE_ADD("usart_clock", CLOCK, 307200) + MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(sdk86_state, write_usart_clock)) + + MCFG_DEVICE_ADD("i8279", I8279, 2500000) // based on divider + MCFG_I8279_OUT_SL_CB(WRITE8(sdk86_state, scanlines_w)) // scan SL lines + MCFG_I8279_OUT_DISP_CB(WRITE8(sdk86_state, digit_w)) // display A&B + MCFG_I8279_IN_RL_CB(READ8(sdk86_state, kbd_r)) // kbd RL lines + MCFG_I8279_IN_SHIFT_CB(GND) // Shift key + MCFG_I8279_IN_CTRL_CB(GND) + +MACHINE_CONFIG_END + +/* ROM definition */ +ROM_START( sdk86 ) + ROM_REGION( 0x100000, "maincpu", ROMREGION_ERASEFF ) // all are Intel D2616 ?eproms with the windows painted over? (factory programmed eproms? this would match the 'i8642' marking on the factory programmed eprom version of the AT keyboard mcu...) + // Note that the rom pairs at FE000-FEFFF and FF000-FFFFF are interchangeable; the ones at FF000-FFFFF are the ones which start on bootup, and the other ones live at FE000-FEFFF and can be switched in by the user. One pair is the Serial RS232 Monitor and the other is the Keypad/front panel monitor. On the SDK-86 I (LN) dumped, the Keypad monitor was primary, but the other SDK-86 I know of has the roms in the opposite arrangement (Serial primary). + // Keypad Monitor Version 1.1 (says "- 86 1.1" on LED display at startup) + ROM_SYSTEM_BIOS( 0, "keypad", "Keypad Monitor" ) + ROMX_LOAD( "0169_102042-001.a27", 0xff000, 0x0800, CRC(3f46311a) SHA1(a97e6861b736f26230b9adbf5cd2576a9f60d626), ROM_SKIP(1) | ROM_BIOS(1) ) /* Label: "iD2616 // T142094WS // (C)INTEL '77 // 0169 // 102042-001" */ + ROMX_LOAD( "0170_102043-001.a30", 0xff001, 0x0800, CRC(65924471) SHA1(5d258695bf585f89179dfa0a113a0eeeabd5ee2b), ROM_SKIP(1) | ROM_BIOS(1) ) /* Label: "iD2616 // T145056WS // (C)INTEL '77 // 0170 // 102043-001" */ + // Serial Monitor Version 1.2 (says " 86 1.2" on LED display at startup, and sends a data prompt over serial) + ROM_SYSTEM_BIOS( 1, "serial", "Serial Monitor" ) + ROMX_LOAD( "0456_104531-001.a36", 0xff000, 0x0800, CRC(f9c4a809) SHA1(aea324c3f52dd393f1eed2b856ba11f050a35b93), ROM_SKIP(1) | ROM_BIOS(2) ) /* Label: "iD2616 // T142099WS // (C)INTEL '77 // 0456 // 104531-001" */ + ROMX_LOAD( "0457_104532-001.a37", 0xff001, 0x0800, CRC(a245ba5c) SHA1(7f67277f866fca5377cb123e9cc405b5fdfe61d3), ROM_SKIP(1) | ROM_BIOS(2) ) /* Label: "iD2616 // T145054WS // (C)INTEL '77 // 0457 // 104532-001" */ + + /* proms: + * dumped 11/21/09 through 11/29/09 by LN + * purposes: (according to sdk-86 user manual from http://www.bitsavers.org/pdf/intel/8086/9800698A_SDK-86_Users_Man_Apr79.pdf) + * A12: main address decoding (selects ram or rom or open bus/offboard, see page 2-7) + * A22: I/O decoding for 8251, 8279 and optional pair of 8255 chips (in the FFE8-FFFF I/O area; see page 2-6) + * A26: ROM address decoding for selecting which of the 4 pairs of roms is active (note that to use the FCxxx and FDxxx pairs requires wiring them into the prototype area, they are not standard; see page 2-5) + * A29: RAM address decoding (see page 2-4) + */ + ROM_REGION(0x1000, "proms", 0 ) // all are Intel D3625A 1kx4 (82s137A equivalent) + ROM_LOAD( "0036_101993-001.a12", 0x0000, 0x0400, CRC(bb7edbfd) SHA1(8847f9815c7cb8695986743199673920a7d4390d)) /* Label: "iD3625A 0036 // 8142 // 101993-001" */ + ROM_LOAD( "0035_101992-001.a22", 0x0400, 0x0400, CRC(76aced0c) SHA1(89fa39473e19d8cb6b65d6430d3d683ae2398fb3)) /* Label: "iD3625A 0035 // 8142 // 101992-001" */ + ROM_LOAD( "0037_101994-001.a26", 0x0800, 0x0400, CRC(d6f33d30) SHA1(41e794bf202266fa57516403e6a80ebbf6c95fdc)) /* Label: "iD3625A 0037 // 8142 // 101994-001" */ + ROM_LOAD( "0038_101995-001.a29", 0x0C00, 0x0400, CRC(3d2c18bc) SHA1(5e1935cd07fef26b2cf3d8fa7612fe0d8e678c06)) /* Label: "iD3625A 0038 // 8142 // 101995-001" */ +ROM_END + +/* Driver */ + +/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ +COMP( 1979, sdk86, 0, 0, sdk86, sdk86, driver_device, 0, "Intel", "SDK-86", MACHINE_NO_SOUND_HW) |