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i8089.c: device skeleton

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This commit is contained in:
Dirk Best 2013-08-09 14:29:33 +00:00
parent 624ff85a3b
commit 633d639623
6 changed files with 217 additions and 6 deletions
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2
.gitattributes vendored
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@ -1251,6 +1251,8 @@ src/emu/machine/generic.c svneol=native#text/plain
src/emu/machine/generic.h svneol=native#text/plain
src/emu/machine/i2cmem.c svneol=native#text/plain
src/emu/machine/i2cmem.h svneol=native#text/plain
src/emu/machine/i8089.c svneol=native#text/plain
src/emu/machine/i8089.h svneol=native#text/plain
src/emu/machine/i8155.c svneol=native#text/plain
src/emu/machine/i8155.h svneol=native#text/plain
src/emu/machine/i8212.c svneol=native#text/plain

103
src/emu/machine/i8089.c Normal file
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@ -0,0 +1,103 @@
/***************************************************************************
Intel 8089 I/O Processor
***************************************************************************/
#include "i8089.h"
//**************************************************************************
// MACROS/CONSTANTS
//**************************************************************************
#define VERBOSE 1
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
const device_type I8089 = &device_creator<i8089_device>;
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// i8089_device - constructor
//-------------------------------------------------
i8089_device::i8089_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
device_t(mconfig, I8089, "Intel 8089", tag, owner, clock, "i8089", __FILE__),
m_write_sintr1(*this),
m_write_sintr2(*this)
{
}
void i8089_device::static_set_cputag(device_t &device, const char *tag)
{
i8089_device &i8089 = downcast<i8089_device &>(device);
i8089.m_cputag = tag;
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void i8089_device::device_start()
{
// resolve callbacks
m_write_sintr1.resolve_safe();
m_write_sintr2.resolve_safe();
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void i8089_device::device_reset()
{
}
//**************************************************************************
// EXTERNAL INPUTS
//**************************************************************************
WRITE_LINE_MEMBER( i8089_device::ca_w )
{
if (VERBOSE)
logerror("%s('%s'): ca_w: %u\n", shortname(), basetag(), state);
}
WRITE_LINE_MEMBER( i8089_device::sel_w )
{
if (VERBOSE)
logerror("%s('%s'): sel_w: %u\n", shortname(), basetag(), state);
}
WRITE_LINE_MEMBER( i8089_device::drq1_w )
{
if (VERBOSE)
logerror("%s('%s'): drq1_w: %u\n", shortname(), basetag(), state);
}
WRITE_LINE_MEMBER( i8089_device::drq2_w )
{
if (VERBOSE)
logerror("%s('%s'): drq2_w: %u\n", shortname(), basetag(), state);
}
WRITE_LINE_MEMBER( i8089_device::ext1_w )
{
if (VERBOSE)
logerror("%s('%s'): ext1_w: %u\n", shortname(), basetag(), state);
}
WRITE_LINE_MEMBER( i8089_device::ext2_w )
{
if (VERBOSE)
logerror("%s('%s'): ext2_w: %u\n", shortname(), basetag(), state);
}

75
src/emu/machine/i8089.h Normal file
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@ -0,0 +1,75 @@
/***************************************************************************
Intel 8089 I/O Processor
***************************************************************************/
#pragma once
#ifndef __I8089_H__
#define __I8089_H__
#include "emu.h"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_I8089_ADD(_tag, _clock, _cputag) \
MCFG_DEVICE_ADD(_tag, I8089, _clock) \
i8089_device::static_set_cputag(*device, _cputag); \
#define MCFG_I8089_SINTR1(_sintr1) \
downcast<i8089_device *>(device)->set_sintr1_callback(DEVCB2_##_sintr1);
#define MCFG_I8089_SINTR2(_sintr2) \
downcast<i8089_device *>(device)->set_sintr2_callback(DEVCB2_##_sintr2);
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> i8089_device
class i8089_device : public device_t
{
public:
// construction/destruction
i8089_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// callbacks
template<class _sintr1> void set_sintr1_callback(_sintr1 sintr1) { m_write_sintr1.set_callback(sintr1); }
template<class _sintr2> void set_sintr2_callback(_sintr2 sintr2) { m_write_sintr2.set_callback(sintr2); }
// input lines
DECLARE_WRITE_LINE_MEMBER( ca_w );
DECLARE_WRITE_LINE_MEMBER( sel_w );
DECLARE_WRITE_LINE_MEMBER( drq1_w );
DECLARE_WRITE_LINE_MEMBER( drq2_w );
DECLARE_WRITE_LINE_MEMBER( ext1_w );
DECLARE_WRITE_LINE_MEMBER( ext2_w );
// inline configuration
static void static_set_cputag(device_t &device, const char *tag);
protected:
// device-level overrides
virtual void device_start();
virtual void device_reset();
private:
devcb2_write_line m_write_sintr1;
devcb2_write_line m_write_sintr2;
// internal state
const char *m_cputag;
};
// device type definition
extern const device_type I8089;
#endif /* __I8089_H__ */

9
src/emu/machine/machine.mak
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@ -465,6 +465,15 @@ ifneq ($(filter I2CMEM,$(MACHINES)),)
MACHINEOBJS += $(MACHINEOBJ)/i2cmem.o
endif
#-------------------------------------------------
#
#@src/emu/machine/i8089.h,MACHINES += I8089
#-------------------------------------------------
ifneq ($(filter I8089,$(MACHINES)),)
MACHINEOBJS += $(MACHINEOBJ)/i8089.o
endif
#-------------------------------------------------
#
#@src/emu/machine/i8155.h,MACHINES += I8155

33
src/mess/drivers/apricot.c
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@ -10,6 +10,7 @@
#include "emu.h"
#include "cpu/i86/i86.h"
#include "machine/ram.h"
#include "machine/i8089.h"
#include "machine/pit8253.h"
#include "machine/i8255.h"
#include "machine/pic8259.h"
@ -34,6 +35,7 @@ public:
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_ram(*this, RAM_TAG),
m_iop(*this, "ic71"),
m_sn(*this, "ic7"),
m_crtc(*this, "ic30"),
m_ppi(*this, "ic17"),
@ -55,6 +57,7 @@ public:
required_device<cpu_device> m_maincpu;
required_device<ram_device> m_ram;
required_device<i8089_device> m_iop;
required_device<sn76489_device> m_sn;
required_device<mc6845_device> m_crtc;
required_device<i8255_device> m_ppi;
@ -69,6 +72,8 @@ public:
required_shared_ptr<UINT16> m_screen_buffer;
DECLARE_WRITE8_MEMBER( i8089_ca1_w );
DECLARE_WRITE8_MEMBER( i8089_ca2_w );
DECLARE_READ8_MEMBER( apricot_sysctrl_r );
DECLARE_WRITE8_MEMBER( apricot_sysctrl_w );
DECLARE_WRITE_LINE_MEMBER( timer_out1 );
@ -100,6 +105,20 @@ public:
I/O
***************************************************************************/
WRITE8_MEMBER( apricot_state::i8089_ca1_w )
{
m_iop->sel_w(0);
m_iop->ca_w(1);
m_iop->ca_w(0);
}
WRITE8_MEMBER( apricot_state::i8089_ca2_w )
{
m_iop->sel_w(1);
m_iop->ca_w(1);
m_iop->ca_w(0);
}
READ8_MEMBER( apricot_state::apricot_sysctrl_r )
{
UINT8 data = 0;
@ -172,7 +191,7 @@ static Z80SIO_INTERFACE( apricot_z80sio_intf )
DEVCB_DEVICE_LINE_MEMBER("rs232", serial_port_device, tx),
DEVCB_DEVICE_LINE_MEMBER("rs232", rs232_port_device, dtr_w),
DEVCB_DEVICE_LINE_MEMBER("rs232", rs232_port_device, rts_w),
DEVCB_NULL, // wait/ready: i8089 data request channel 2
DEVCB_DEVICE_LINE_MEMBER("ic71", i8089_device, drq2_w),
DEVCB_NULL,
// channel b
@ -217,12 +236,12 @@ static const centronics_interface apricot_centronics_intf =
void apricot_state::wd2793_intrq_w(bool state)
{
m_pic->ir4_w(state);
// i8089 external terminate channel 1
m_iop->ext1_w(state);
}
void apricot_state::wd2793_drq_w(bool state)
{
// i8089 data request channel 1
m_iop->drq1_w(state);
}
static SLOT_INTERFACE_START( apricot_floppies )
@ -333,8 +352,8 @@ static ADDRESS_MAP_START( apricot_io, AS_IO, 16, apricot_state )
AM_RANGE(0x60, 0x67) AM_DEVREADWRITE8("ic15", z80sio0_device, ba_cd_r, ba_cd_w, 0x00ff)
AM_RANGE(0x68, 0x69) AM_MIRROR(0x04) AM_DEVWRITE8("ic30", mc6845_device, address_w, 0x00ff)
AM_RANGE(0x6a, 0x6b) AM_MIRROR(0x04) AM_DEVREADWRITE8("ic30", mc6845_device, register_r, register_w, 0x00ff)
// AM_RANGE(0x70, 0x71) AM_MIRROR(0x04) 8089 channel attention 1
// AM_RANGE(0x72, 0x73) AM_MIRROR(0x04) 8089 channel attention 2
AM_RANGE(0x70, 0x71) AM_MIRROR(0x04) AM_WRITE8(i8089_ca1_w, 0x00ff)
AM_RANGE(0x72, 0x73) AM_MIRROR(0x04) AM_WRITE8(i8089_ca2_w, 0x00ff)
AM_RANGE(0x78, 0x7f) AM_NOP /* unavailable */
ADDRESS_MAP_END
@ -353,7 +372,9 @@ static MACHINE_CONFIG_START( apricot, apricot_state )
MCFG_CPU_PROGRAM_MAP(apricot_mem)
MCFG_CPU_IO_MAP(apricot_io)
// MCFG_CPU_ADD("ic71", I8089, XTAL_15MHz / 3)
MCFG_I8089_ADD("ic71", XTAL_15MHz / 3, "maincpu")
MCFG_I8089_SINTR1(DEVWRITELINE("ic31", pic8259_device, ir0_w))
MCFG_I8089_SINTR2(DEVWRITELINE("ic31", pic8259_device, ir1_w))
// video hardware
MCFG_SCREEN_ADD("screen", RASTER)

1
src/mess/mess.mak
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@ -357,6 +357,7 @@ MACHINES += ER2055
MACHINES += ER59256
MACHINES += F3853
MACHINES += I2CMEM
MACHINES += I8089
MACHINES += I8155
MACHINES += I8212
MACHINES += I8214