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r21436 Monday 25th February, 2013 at 13:10:03 UTC by Miodrag Milanović
isa_ide : correctly mapped alternate port [Miodrag Milanovic] This makes a586 boot from primary HDD

[src/mess/machine]

isa_ide.c isa_ide.h

trunk/src/mess/machine/isa_ide.c

r21435	r21436
9	9	#include "machine/idectrl.h"
10	10	#include "imagedev/harddriv.h"
11	11
12		static READ16_DEVICE_HANDLER( ide16_r )
	12	READ16_MEMBER(isa16_ide_device::ide16_r)
13	13	{
14		return ide_controller16_r(device, space, 0x1f0/2 + offset, mem_mask);
	14	return ide_controller16_r(m_ide, space, 0x1f0/2 + offset, mem_mask);
15	15	}
16	16
17		static WRITE16_DEVICE_HANDLER( ide16_w )
	17	WRITE16_MEMBER(isa16_ide_device::ide16_w)
18	18	{
19		ide_controller16_w(device, space, 0x1f0/2 + offset, data, mem_mask);
	19	ide_controller16_w(m_ide, space, 0x1f0/2 + offset, data, mem_mask);
20	20	}
21	21
22
23		static READ16_DEVICE_HANDLER( ide16_alt_r )
	22	READ8_MEMBER(isa16_ide_device::ide16_alt_r )
24	23	{
25		return ide_controller16_r(device, space, 0x3f6/2 + offset, 0x00ff);
	24	return ide_controller16_r(m_ide, space, 0x3f6/2, 0x00ff);
26	25	}
27	26
28		static WRITE16_DEVICE_HANDLER( ide16_alt_w )
	27	WRITE8_MEMBER(isa16_ide_device::ide16_alt_w )
29	28	{
30		ide_controller16_w(device, space, 0x3f6/2 + offset, data, 0x00ff);
	29	ide_controller16_w(m_ide, space, 0x3f6/2, data, 0x00ff);
31	30	}
32	31
	32	DEVICE_ADDRESS_MAP_START(map, 16, isa16_ide_device)
	33	AM_RANGE(0x0, 0x7) AM_READWRITE(ide16_r, ide16_w)
	34	ADDRESS_MAP_END
	35
	36	DEVICE_ADDRESS_MAP_START(alt_map, 8, isa16_ide_device)
	37	AM_RANGE(0x6, 0x6) AM_READWRITE(ide16_alt_r, ide16_alt_w)
	38	ADDRESS_MAP_END
	39
33	40	WRITE_LINE_MEMBER(isa16_ide_device::ide_interrupt)
34	41	{
35	42	if (is_primary())
r21435	r21436
90	97	isa16_ide_device::isa16_ide_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
91	98	: device_t(mconfig, ISA16_IDE, "IDE Fixed Drive Adapter", tag, owner, clock),
92	99	device_isa16_card_interface( mconfig, *this ),
93		m_is_primary(true)
	100	m_is_primary(true),
	101	m_ide(*this, "ide")
94	102	{
95	103	}
96	104
r21435	r21436
111	119	{
112	120	m_is_primary = (ioport("DSW")->read() & 1) ? false : true;
113	121	if (m_is_primary) {
114		m_isa->install16_device(subdevice("ide"), 0x01f0, 0x01f7, 0, 0, FUNC(ide16_r), FUNC(ide16_w) );
115		//m_isa->install16_device(subdevice("ide"), 0x03f6, 0x03f7, 0, 0, FUNC(ide16_alt_r), FUNC(ide16_alt_w) );
	122	m_isa->install_device(0x01f0, 0x01f7, *this, &isa16_ide_device::map, 16);
	123	m_isa->install_device(0x03f0, 0x03f7, *this, &isa16_ide_device::alt_map);
116	124	} else {
117		m_isa->install16_device(subdevice("ide"), 0x0170, 0x0177, 0, 0, FUNC(ide16_r), FUNC(ide16_w) );
118		m_isa->install16_device(subdevice("ide"), 0x0376, 0x0377, 0, 0, FUNC(ide16_alt_r), FUNC(ide16_alt_w) );
	125	m_isa->install_device(0x0170, 0x0177, *this, &isa16_ide_device::map, 16);
	126	m_isa->install_device(0x0370, 0x0377, *this, &isa16_ide_device::alt_map);
119	127	}
120	128	}

trunk/src/mess/machine/isa_ide.h

r21435	r21436
5	5
6	6	#include "emu.h"
7	7	#include "machine/isa.h"
	8	#include "machine/idectrl.h"
8	9
9	10	//**************************************************************************
10	11	//  TYPE DEFINITIONS
r21435	r21436
25	26
26	27	bool is_primary() { return m_is_primary; }
27	28	DECLARE_WRITE_LINE_MEMBER(ide_interrupt);
28
	29	DECLARE_ADDRESS_MAP(map, 16);
	30	DECLARE_ADDRESS_MAP(alt_map, 8);
	31	READ16_MEMBER(ide16_r);
	32	WRITE16_MEMBER(ide16_w);
	33	READ8_MEMBER(ide16_alt_r);
	34	WRITE8_MEMBER(ide16_alt_w);
29	35	protected:
30	36	// device-level overrides
31	37	virtual void device_start();
r21435	r21436
35	41	private:
36	42	// internal state
37	43	bool m_is_primary;
	44	required_device<ide_controller_device> m_ide;
38	45	};
39	46
40	47

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