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(MESS) 68ksbc: connected up serial terminal

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This commit is contained in:
Robbbert 2013-06-03 10:08:32 +00:00
parent 41449d6a62
commit c601f92855
1 changed files with 24 additions and 33 deletions
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57
src/mess/drivers/68ksbc.c
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@ -8,7 +8,6 @@
TODO:
- Add RTC (type DS12887)
- Add UART (type mc6850)
All of the address and i/o decoding is done by a pair of XC9536
mask-programmed custom devices.
@ -27,7 +26,8 @@
#include "emu.h"
#include "cpu/m68000/m68000.h"
#include "machine/terminal.h"
#include "machine/6850acia.h"
#include "machine/serial.h"
class c68ksbc_state : public driver_device
@ -35,39 +35,19 @@ class c68ksbc_state : public driver_device
public:
c68ksbc_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_terminal(*this, TERMINAL_TAG)
m_maincpu(*this, "maincpu")
{ }
required_device<cpu_device> m_maincpu;
required_device<generic_terminal_device> m_terminal;
DECLARE_READ16_MEMBER( c68ksbc_status_r );
DECLARE_READ16_MEMBER( c68ksbc_terminal_r );
DECLARE_WRITE8_MEMBER( kbd_put );
UINT8 m_term_data;
virtual void machine_reset();
};
//bit 0 high = a key is ready; bit 1 high = ready to output to terminal
READ16_MEMBER( c68ksbc_state::c68ksbc_status_r )
{
return (m_term_data) ? 3 : 2;
}
READ16_MEMBER( c68ksbc_state::c68ksbc_terminal_r )
{
UINT8 ret = m_term_data;
m_term_data = 0;
return ret;
}
static ADDRESS_MAP_START(c68ksbc_mem, AS_PROGRAM, 16, c68ksbc_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x000000, 0x002fff) AM_ROM
AM_RANGE(0x003000, 0x5fffff) AM_RAM
AM_RANGE(0x600000, 0x600001) AM_READ(c68ksbc_status_r)
AM_RANGE(0x600002, 0x600003) AM_READ(c68ksbc_terminal_r) AM_DEVWRITE8(TERMINAL_TAG, generic_terminal_device, write, 0xff)
AM_RANGE(0x600000, 0x600001) AM_DEVREADWRITE8("acia", acia6850_device, status_read, control_write, 0x00ff)
AM_RANGE(0x600002, 0x600003) AM_DEVREADWRITE8("acia", acia6850_device, data_read, data_write, 0x00ff)
ADDRESS_MAP_END
@ -78,17 +58,27 @@ INPUT_PORTS_END
void c68ksbc_state::machine_reset()
{
m_term_data = 0;
}
WRITE8_MEMBER( c68ksbc_state::kbd_put )
static ACIA6850_INTERFACE( acia_intf )
{
m_term_data = data;
}
153600,
153600,
DEVCB_DEVICE_LINE_MEMBER("rs232", serial_port_device, rx),
DEVCB_DEVICE_LINE_MEMBER("rs232", serial_port_device, tx),
DEVCB_DEVICE_LINE_MEMBER("rs232", rs232_port_device, cts_r),
DEVCB_DEVICE_LINE_MEMBER("rs232", rs232_port_device, rts_w),
DEVCB_NULL,
DEVCB_NULL
};
static GENERIC_TERMINAL_INTERFACE( terminal_intf )
static const rs232_port_interface rs232_intf =
{
DEVCB_DRIVER_MEMBER(c68ksbc_state, kbd_put)
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL
};
static MACHINE_CONFIG_START( c68ksbc, c68ksbc_state )
@ -96,7 +86,8 @@ static MACHINE_CONFIG_START( c68ksbc, c68ksbc_state )
MCFG_CPU_ADD("maincpu", M68000, 8000000) // text says 8MHz, schematic says 10MHz
MCFG_CPU_PROGRAM_MAP(c68ksbc_mem)
MCFG_GENERIC_TERMINAL_ADD(TERMINAL_TAG, terminal_intf)
MCFG_ACIA6850_ADD("acia", acia_intf)
MCFG_RS232_PORT_ADD("rs232", rs232_intf, default_rs232_devices, "serial_terminal")
MACHINE_CONFIG_END
/* ROM definition */
@ -107,5 +98,5 @@ ROM_END
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
COMP( 2002, 68ksbc, 0, 0, c68ksbc, c68ksbc, driver_device, 0, "Ichit Sirichote", "68k Single Board Computer", GAME_NO_SOUND_HW)