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(MESS) sdk86: Added serial terminal. [Curt Coder]
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Curt Coder
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6f908511ca
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dd4763f134
@ -21,28 +21,39 @@ Download the User Manual to get the operating procedures.
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ToDo:
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- Artwork
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- Add INTR and RESET keys
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- Add terminal interface and option to enable it.
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****************************************************************************/
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#include "emu.h"
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#include "cpu/i86/i86.h"
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#include "machine/i8251.h"
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#include "machine/i8279.h"
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#include "machine/serial.h"
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#include "sdk86.lh"
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#define I8251_TAG "i8251"
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#define RS232_TAG "rs232"
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class sdk86_state : public driver_device
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{
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public:
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sdk86_state(const machine_config &mconfig, device_type type, const char *tag)
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: driver_device(mconfig, type, tag) ,
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m_maincpu(*this, "maincpu") { }
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m_maincpu(*this, "maincpu"),
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m_usart(*this, I8251_TAG)
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{ }
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required_device<cpu_device> m_maincpu;
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required_device<i8251_device> m_usart;
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DECLARE_WRITE8_MEMBER(scanlines_w);
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DECLARE_WRITE8_MEMBER(digit_w);
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DECLARE_READ8_MEMBER(kbd_r);
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TIMER_DEVICE_CALLBACK_MEMBER( serial_tick );
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UINT8 m_digit;
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required_device<cpu_device> m_maincpu;
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};
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static ADDRESS_MAP_START(sdk86_mem, AS_PROGRAM, 16, sdk86_state)
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@ -52,14 +63,12 @@ ADDRESS_MAP_END
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static ADDRESS_MAP_START(sdk86_io, AS_IO, 16, sdk86_state)
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ADDRESS_MAP_UNMAP_HIGH
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AM_RANGE(0xfff0, 0xfff1) AM_MIRROR(4) AM_DEVREADWRITE8(I8251_TAG, i8251_device, data_r, data_w, 0xff)
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AM_RANGE(0xfff2, 0xfff3) AM_MIRROR(4) AM_DEVREADWRITE8(I8251_TAG, i8251_device, status_r, control_w, 0xff)
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AM_RANGE(0xffe8, 0xffe9) AM_MIRROR(4) AM_DEVREADWRITE8("i8279", i8279_device, data_r, data_w, 0xff)
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AM_RANGE(0xffea, 0xffeb) AM_MIRROR(4) AM_DEVREADWRITE8("i8279", i8279_device, status_r, cmd_w, 0xff)
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// FFF0-FFF3 = 8251 serial chip (even -> data, control) AM_MIRROR(4)
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// FFF8-FFFF = 2 x 8255A i/o chips. chip 1 uses the odd addresses, chip 2 uses the even addresses.
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// ports are A,B,C,control in that order.
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ADDRESS_MAP_END
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/* Input ports */
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@ -119,6 +128,25 @@ READ8_MEMBER( sdk86_state::kbd_r )
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return data;
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}
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TIMER_DEVICE_CALLBACK_MEMBER( sdk86_state::serial_tick )
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{
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m_usart->receive_clock();
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m_usart->transmit_clock();
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}
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static const i8251_interface usart_intf =
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{
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DEVCB_DEVICE_LINE_MEMBER(RS232_TAG, serial_port_device, rx),
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DEVCB_DEVICE_LINE_MEMBER(RS232_TAG, serial_port_device, tx),
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DEVCB_DEVICE_LINE_MEMBER(RS232_TAG, rs232_port_device, dsr_r),
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DEVCB_DEVICE_LINE_MEMBER(RS232_TAG, rs232_port_device, dtr_w),
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DEVCB_NULL, // connected to CTS
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL
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};
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static I8279_INTERFACE( sdk86_intf )
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{
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DEVCB_NULL, // irq
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@ -130,6 +158,20 @@ static I8279_INTERFACE( sdk86_intf )
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DEVCB_LINE_GND
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};
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static DEVICE_INPUT_DEFAULTS_START( terminal )
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DEVICE_INPUT_DEFAULTS( "TERM_FRAME", 0x0f, 0x05 ) // 4800
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DEVICE_INPUT_DEFAULTS( "TERM_FRAME", 0x30, 0x20 ) // 8N2
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DEVICE_INPUT_DEFAULTS_END
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static const rs232_port_interface rs232_intf =
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{
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL
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};
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static MACHINE_CONFIG_START( sdk86, sdk86_state )
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/* basic machine hardware */
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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 */
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@ -140,19 +182,24 @@ static MACHINE_CONFIG_START( sdk86, sdk86_state )
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MCFG_DEFAULT_LAYOUT(layout_sdk86)
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/* Devices */
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MCFG_I8251_ADD(I8251_TAG, usart_intf)
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MCFG_I8279_ADD("i8279", 2500000, sdk86_intf) // based on divider
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MCFG_RS232_PORT_ADD(RS232_TAG, rs232_intf, default_rs232_devices, "serial_terminal", terminal)
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MCFG_TIMER_DRIVER_ADD_PERIODIC("serial", sdk86_state, serial_tick, attotime::from_hz(307200))
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MACHINE_CONFIG_END
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/* ROM definition */
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ROM_START( sdk86 )
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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...)
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// 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).
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// Serial Monitor Version 1.2 (says " 86 1.2" on LED display at startup, and sends a data prompt over serial)
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ROM_LOAD16_BYTE( "0456_104531-001.a36", 0xfe000, 0x0800, CRC(f9c4a809) SHA1(aea324c3f52dd393f1eed2b856ba11f050a35b93)) /* Label: "iD2616 // T142099WS // (C)INTEL '77 // 0456 // 104531-001" */
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ROM_LOAD16_BYTE( "0457_104532-001.a37", 0xfe001, 0x0800, CRC(a245ba5c) SHA1(7f67277f866fca5377cb123e9cc405b5fdfe61d3)) /* Label: "iD2616 // T145054WS // (C)INTEL '77 // 0457 // 104532-001" */
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// Keypad Monitor Version 1.1 (says "- 86 1.1" on LED display at startup)
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ROM_LOAD16_BYTE( "0169_102042-001.a27", 0xff000, 0x0800, CRC(3f46311a) SHA1(a97e6861b736f26230b9adbf5cd2576a9f60d626)) /* Label: "iD2616 // T142094WS // (C)INTEL '77 // 0169 // 102042-001" */
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ROM_LOAD16_BYTE( "0170_102043-001.a30", 0xff001, 0x0800, CRC(65924471) SHA1(5d258695bf585f89179dfa0a113a0eeeabd5ee2b)) /* Label: "iD2616 // T145056WS // (C)INTEL '77 // 0170 // 102043-001" */
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ROM_SYSTEM_BIOS( 0, "keypad", "Keypad Monitor" )
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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" */
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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" */
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// Serial Monitor Version 1.2 (says " 86 1.2" on LED display at startup, and sends a data prompt over serial)
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ROM_SYSTEM_BIOS( 1, "serial", "Serial Monitor" )
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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" */
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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" */
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/* proms:
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* dumped 11/21/09 through 11/29/09 by LN
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@ -52,4 +52,10 @@
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</view>
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<view name="Terminal">
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<screen index="0">
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<bounds left="0" top="0" right="4" bottom="3" />
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</screen>
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</view>
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</mamelayout>
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