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(MESS) imsai : added devices (nw)

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This commit is contained in:
Robbbert 2013-09-12 10:50:36 +00:00
parent 74c5205869
commit 880a928455
1 changed files with 60 additions and 4 deletions
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64
src/mess/drivers/imsai.c
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@ -8,10 +8,17 @@
Press any key to start the monitor program.
ToDo:
- Banking
- Connect PIT to UART clock.
- Dipswitches
****************************************************************************/
#include "emu.h"
#include "cpu/i8085/i8085.h"
#include "machine/i8251.h"
#include "machine/pit8253.h"
#include "machine/terminal.h"
@ -22,23 +29,29 @@ public:
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_terminal(*this, TERMINAL_TAG)
, m_uart(*this, "uart")
, m_pit(*this, "pit")
{ }
DECLARE_WRITE8_MEMBER(kbd_put);
DECLARE_READ8_MEMBER(keyin_r);
DECLARE_READ8_MEMBER(status_r);
DECLARE_WRITE8_MEMBER(control_w);
private:
UINT8 m_term_data;
virtual void machine_reset();
required_device<cpu_device> m_maincpu;
required_device<generic_terminal_device> m_terminal;
required_device<i8251_device> m_uart;
required_device<pit8253_device> m_pit;
};
static ADDRESS_MAP_START(imsai_mem, AS_PROGRAM, 8, imsai_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0000, 0x07ff) AM_ROM AM_REGION("roms", 0)
AM_RANGE(0xd000, 0xd7ff) AM_RAM
AM_RANGE(0xd000, 0xd0ff) AM_RAM
AM_RANGE(0xd100, 0xd103) AM_DEVREADWRITE("pit", pit8253_device, read, write)
AM_RANGE(0xd800, 0xdfff) AM_ROM AM_REGION("roms", 0)
ADDRESS_MAP_END
@ -47,10 +60,13 @@ static ADDRESS_MAP_START(imsai_io, AS_IO, 8, imsai_state)
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x02, 0x02) AM_READ(keyin_r) AM_DEVWRITE(TERMINAL_TAG, generic_terminal_device, write)
AM_RANGE(0x03, 0x03) AM_READ(status_r)
AM_RANGE(0x12, 0x12) AM_READ(keyin_r)
AM_RANGE(0x13, 0x13) AM_READ(status_r)
AM_RANGE(0x14, 0x14) AM_READ(keyin_r)
AM_RANGE(0x04, 0x04) AM_DEVREADWRITE("uart", i8251_device, data_r, data_w)
AM_RANGE(0x05, 0x05) AM_DEVREADWRITE("uart", i8251_device, status_r, control_w)
AM_RANGE(0x12, 0x12) AM_DEVREADWRITE("uart", i8251_device, data_r, data_w)
AM_RANGE(0x13, 0x13) AM_DEVREADWRITE("uart", i8251_device, status_r, control_w)
AM_RANGE(0x14, 0x14) AM_READ(keyin_r) AM_DEVWRITE(TERMINAL_TAG, generic_terminal_device, write)
AM_RANGE(0x15, 0x15) AM_READ(status_r)
AM_RANGE(0xf3, 0xf3) AM_WRITE(control_w)
ADDRESS_MAP_END
/* Input ports */
@ -79,6 +95,42 @@ static GENERIC_TERMINAL_INTERFACE( terminal_intf )
DEVCB_DRIVER_MEMBER(imsai_state, kbd_put)
};
static const i8251_interface uart_intf =
{
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL
};
static const struct pit8253_interface pit_intf =
{
{
{
XTAL_6MHz / 3, /* Timer 0: baud rate gen for 8251 */
DEVCB_NULL,
DEVCB_NULL
}, {
XTAL_6MHz / 3, /* Timer 1: user */
DEVCB_NULL,
DEVCB_NULL
}, {
XTAL_6MHz / 3, /* Timer 2: user */
DEVCB_NULL,
DEVCB_NULL
}
}
};
WRITE8_MEMBER( imsai_state::control_w )
{
}
void imsai_state::machine_reset()
{
m_term_data = 0;
@ -92,6 +144,10 @@ static MACHINE_CONFIG_START( imsai, imsai_state )
/* video hardware */
MCFG_GENERIC_TERMINAL_ADD(TERMINAL_TAG, terminal_intf)
/* Devices */
MCFG_I8251_ADD("uart", uart_intf)
MCFG_PIT8253_ADD( "pit", pit_intf)
MACHINE_CONFIG_END
/* ROM definition */