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(nw) dps1 : added uart
This commit is contained in:
Robbbert
parent
9be7681bb3
commit
8cad75c00f
@ -6,15 +6,17 @@ Ithaca Intersystems DPS-1
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The last commercial release of a computer fitted with a front panel.
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It needs to boot from floppy before anything appears on screen.
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ToDo:
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- Need artwork of the front panel switches and LEDs, and port FF.
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- Replace terminal with s2651 UART and RS232.
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***************************************************************************************************************/
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#include "emu.h"
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#include "cpu/z80/z80.h"
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#include "machine/upd765.h"
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#include "machine/terminal.h"
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#include "machine/mc2661.h"
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#include "bus/rs232/rs232.h"
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#include "softlist.h"
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class dps1_state : public driver_device
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@ -26,11 +28,8 @@ public:
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, m_fdc(*this, "fdc")
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, m_floppy0(*this, "fdc:0")
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//, m_floppy1(*this, "fdc:1")
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, m_terminal(*this, "terminal")
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{ }
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DECLARE_READ8_MEMBER(port00_r);
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DECLARE_WRITE8_MEMBER(port00_w);
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DECLARE_WRITE8_MEMBER(portb2_w);
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DECLARE_WRITE8_MEMBER(portb4_w);
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DECLARE_WRITE8_MEMBER(portb6_w);
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@ -43,28 +42,25 @@ public:
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DECLARE_WRITE_LINE_MEMBER(fdc_drq_w);
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DECLARE_DRIVER_INIT(dps1);
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DECLARE_MACHINE_RESET(dps1);
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void kbd_put(u8 data);
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private:
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bool m_dma_dir;
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uint16_t m_dma_adr;
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uint8_t m_term_data;
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required_device<cpu_device> m_maincpu;
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required_device<upd765_family_device> m_fdc;
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required_device<floppy_connector> m_floppy0;
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//required_device<floppy_connector> m_floppy1;
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required_device<generic_terminal_device> m_terminal;
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};
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static ADDRESS_MAP_START( dps1_mem, AS_PROGRAM, 8, dps1_state )
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static ADDRESS_MAP_START( mem_map, AS_PROGRAM, 8, dps1_state )
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AM_RANGE(0x0000, 0x03ff) AM_READ_BANK("bankr0") AM_WRITE_BANK("bankw0")
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AM_RANGE(0x0400, 0xffff) AM_RAM
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ADDRESS_MAP_END
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static ADDRESS_MAP_START( dps1_io, AS_IO, 8, dps1_state )
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static ADDRESS_MAP_START( io_map, AS_IO, 8, dps1_state )
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ADDRESS_MAP_GLOBAL_MASK(0xff)
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ADDRESS_MAP_UNMAP_HIGH
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AM_RANGE(0x00, 0x03) AM_READWRITE(port00_r,port00_w) // 2651 uart
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AM_RANGE(0x00, 0x03) AM_DEVREADWRITE("uart", mc2661_device, read, write) // S2651
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AM_RANGE(0xb0, 0xb1) AM_DEVICE("fdc", upd765_family_device, map)
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AM_RANGE(0xb2, 0xb3) AM_WRITE(portb2_w) // set dma fdc->memory
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AM_RANGE(0xb4, 0xb5) AM_WRITE(portb4_w) // set dma memory->fdc
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@ -74,35 +70,14 @@ static ADDRESS_MAP_START( dps1_io, AS_IO, 8, dps1_state )
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AM_RANGE(0xbc, 0xbd) AM_WRITE(portbc_w) // set A0-7
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AM_RANGE(0xbe, 0xbf) AM_WRITE(portbe_w) // disable eprom
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AM_RANGE(0xff, 0xff) AM_READWRITE(portff_r, portff_w)
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// other allocated ports, optional
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// AM_RANGE(0x04, 0x07) AM_DEVREADWRITE("uart2", mc2661_device, read, write) // S2651
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// AM_RANGE(0x08, 0x0b) parallel ports
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AM_RANGE(0x10, 0x17) AM_NOP // pair of AM9519 interrupt controllers
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// AM_RANGE(0x18, 0x1f) control lines 0 to 7
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AM_RANGE(0xe0, 0xe3) AM_NOP //unknown device
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ADDRESS_MAP_END
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// uart in
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READ8_MEMBER( dps1_state::port00_r )
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{
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uint8_t data = 0x4e;
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switch(offset)
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{
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case 0:
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data = m_term_data;
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m_term_data = 0;
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break;
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case 1:
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data = (m_term_data) ? 3 : 1;
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break;
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case 3:
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data = 0x27;
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default:
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break;
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}
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return data;
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}
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// uart out
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WRITE8_MEMBER( dps1_state::port00_w )
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{
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if (offset == 0)
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m_terminal->write(space, 0, data);
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}
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// read from disk, to memory
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WRITE8_MEMBER( dps1_state::portb2_w )
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@ -201,11 +176,6 @@ DRIVER_INIT_MEMBER( dps1_state, dps1 )
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static INPUT_PORTS_START( dps1 )
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INPUT_PORTS_END
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void dps1_state::kbd_put(u8 data)
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{
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m_term_data = data;
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}
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static SLOT_INTERFACE_START( floppies )
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SLOT_INTERFACE( "floppy0", FLOPPY_8_DSDD )
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SLOT_INTERFACE_END
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@ -213,13 +183,20 @@ SLOT_INTERFACE_END
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static MACHINE_CONFIG_START( dps1 )
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// basic machine hardware
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MCFG_CPU_ADD("maincpu", Z80, 4000000)
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MCFG_CPU_PROGRAM_MAP(dps1_mem)
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MCFG_CPU_IO_MAP(dps1_io)
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MCFG_CPU_PROGRAM_MAP(mem_map)
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MCFG_CPU_IO_MAP(io_map)
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MCFG_MACHINE_RESET_OVERRIDE(dps1_state, dps1)
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/* video hardware */
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MCFG_DEVICE_ADD("terminal", GENERIC_TERMINAL, 0)
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MCFG_GENERIC_TERMINAL_KEYBOARD_CB(PUT(dps1_state, kbd_put))
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MCFG_DEVICE_ADD("uart", MC2661, XTAL_5_0688MHz)
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MCFG_MC2661_TXD_HANDLER(DEVWRITELINE("rs232", rs232_port_device, write_txd))
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MCFG_MC2661_RTS_HANDLER(DEVWRITELINE("rs232", rs232_port_device, write_rts))
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MCFG_MC2661_DTR_HANDLER(DEVWRITELINE("rs232", rs232_port_device, write_dtr))
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MCFG_RS232_PORT_ADD("rs232", default_rs232_devices, "terminal")
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MCFG_RS232_RXD_HANDLER(DEVWRITELINE("uart",mc2661_device,rx_w))
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MCFG_RS232_DSR_HANDLER(DEVWRITELINE("uart",mc2661_device,dsr_w))
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MCFG_RS232_CTS_HANDLER(DEVWRITELINE("uart",mc2661_device,cts_w))
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// floppy
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MCFG_UPD765A_ADD("fdc", false, true)
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@ -23,9 +23,10 @@ TODO:
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***************************************************************************************************/
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#include "emu.h"
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#include "bus/rs232/rs232.h"
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#include "cpu/z80/z80.h"
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//#include "cpu/8x300/8x300.h" // device = N8X300
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#include "machine/6850acia.h"
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#include "bus/rs232/rs232.h"
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#include "machine/clock.h"
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#include "video/mc6845.h"
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#include "screen.h"
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