i8089.c: device skeleton

.gitattributes

@@ -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

src/emu/machine/i8089.c

@@ -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);
+}

src/emu/machine/i8089.h

@@ -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__ */

src/emu/machine/machine.mak

@@ -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

src/mess/drivers/apricot.c

@@ -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(0x70, 0x71) AM_MIRROR(0x04) AM_WRITE8(i8089_ca1_w, 0x00ff)
-//  AM_RANGE(0x72, 0x73) AM_MIRROR(0x04) 8089 channel attention 2
+	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)

src/mess/mess.mak

@@ -357,6 +357,7 @@ MACHINES += ER2055
 MACHINES += ER59256
 MACHINES += F3853
 MACHINES += I2CMEM
+MACHINES += I8089
 MACHINES += I8155
 MACHINES += I8212
 MACHINES += I8214