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r41456 Thursday 29th October, 2015 at 22:19:40 UTC by David Haywood
internal map for internal things (nw)

[src/devices/bus/vcs]	harmony_melody.c harmony_melody.h
[src/devices/cpu/arm7]	lpc210x.c lpc210x.h

trunk/src/devices/bus/vcs/harmony_melody.c

r249967	r249968
67	67
68	68
69	69	a26_rom_harmony_device::a26_rom_harmony_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
70		: a26_rom_f8_device(mconfig, A26_ROM_HARMONY, "Atari 2600 ROM Cart HARMONY/MELODY", tag, owner, clock, "a2600_harmony", __FILE__)
	70	: a26_rom_f8_device(mconfig, A26_ROM_HARMONY, "Atari 2600 ROM Cart HARMONY/MELODY", tag, owner, clock, "a2600_harmony", __FILE__),
	71	m_cpu(*this, "arm")
71	72	{
72	73	}
73	74
r249967	r249968
80	81	save_item(NAME(m_base_bank));
81	82	}
82	83
83		void a26_rom_harmony_device::device_reset()
84		{
85		m_base_bank = 5;
86		}
87
88
89		READ8_MEMBER(a26_rom_harmony_device::read8_r)
90		{
91		return m_rom[offset + (m_base_bank * 0x1000)];
92		}
93
94
95		READ32_MEMBER(a26_rom_harmony_device::armrom_r)
96		{
97		UINT32 ret = (m_rom[offset * 4 + 3] << 24) |
98		(m_rom[offset * 4 + 2] << 16) |
99		(m_rom[offset * 4 + 1] << 8) |
100		(m_rom[offset * 4 + 0] << 0);
101		return ret;
102		}
103
104		WRITE32_MEMBER(a26_rom_harmony_device::armrom_w)
105		{
106
107		}
108
109		READ32_MEMBER(a26_rom_harmony_device::arm_E01FC088_r)
110		{
111		return 0xffffffff;
112		}
113
114	84	static ADDRESS_MAP_START( harmony_arm7_map, AS_PROGRAM, 32, a26_rom_harmony_device )
115		// todo: implement all this correctly
116		AM_RANGE(0x00000000, 0x00007fff) AM_READWRITE(armrom_r,armrom_w) // flash, 32k
117		AM_RANGE(0x40000000, 0x40001fff) AM_RAM // sram, 8k
118
119		AM_RANGE(0xE01FC088, 0xE01FC08b) AM_READ(arm_E01FC088_r)
	85	// these are not listed in the ARM manual as internal areas, so probably external? what maps here?
	86	AM_RANGE(0x3FFFC000, 0x3FFFC003) AM_RAM
	87	AM_RANGE(0x3FFFC010, 0x3FFFC013) AM_RAM
	88	AM_RANGE(0x3FFFC014, 0x3FFFC017) AM_RAM // reads
	89	AM_RANGE(0x3FFFC018, 0x3FFFC01b) AM_RAM
120	90	ADDRESS_MAP_END
121	91
122	92	static MACHINE_CONFIG_FRAGMENT( a26_harmony )
r249967	r249968
130	100	}
131	101
132	102	// actually if the ARM code is doing this and providing every opcode to the main CPU based
133		// on bus activity then we shouldn't be doing this here.
	103	// on bus activity then we shouldn't be doing and of this here (if the ROM is actually
	104	// the internal Flash rom of the ARM CPU then the A2600 CPU won't be able to see it directly
	105	// at all?)
	106	//
	107	// instead we need the ARM monitoring the bus at all times and supplying the code on
	108	// demand transparent to the main CPU? is this theory correct?
	109
	110	void a26_rom_harmony_device::device_reset()
	111	{
	112	m_base_bank = 5;
	113
	114	memcpy(m_cpu->m_flash, m_rom, 0x8000);
	115	m_cpu->reset();
	116	}
	117
	118	READ8_MEMBER(a26_rom_harmony_device::read8_r)
	119	{
	120	return m_rom[offset + (m_base_bank * 0x1000)];
	121	}
	122
	123
134	124	void a26_rom_harmony_device::check_bankswitch(offs_t offset)
135	125	{
136	126	switch (offset)

trunk/src/devices/bus/vcs/harmony_melody.h

r249967	r249968
24	24	virtual DECLARE_READ8_MEMBER(read_rom);
25	25	virtual DECLARE_WRITE8_MEMBER(write_bank);
26	26
27		DECLARE_READ32_MEMBER(armrom_r);
28		DECLARE_WRITE32_MEMBER(armrom_w);
29	27
30	28	DECLARE_READ8_MEMBER(read8_r);
31	29
32		DECLARE_READ32_MEMBER(arm_E01FC088_r);
33
34	30	void check_bankswitch(offs_t offset);
35	31
36	32	protected:
	33
	34	private:
	35	required_device<lpc210x_device> m_cpu;
37	36	};
38	37
39	38

trunk/src/devices/cpu/arm7/lpc210x.c

r249967	r249968
16	16
17	17	const device_type LPC2103 = &device_creator<lpc210x_device>;
18	18
	19	static ADDRESS_MAP_START( lpc2103_map, AS_PROGRAM, 32, lpc210x_device )
	20	AM_RANGE(0x00000000, 0x00007fff) AM_READWRITE(flash_r, flash_w) // 32kb internal FLASH rom
	21	AM_RANGE(0x40000000, 0x40001fff) AM_RAM // 8kb internal SROM (writes should actually latch - see docs)
19	22
	23	AM_RANGE(0xE01FC088, 0xE01FC08b) AM_READ(arm_E01FC088_r)
	24	ADDRESS_MAP_END
	25
	26
20	27	lpc210x_device::lpc210x_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
21		: arm7_cpu_device(mconfig, LPC2103, "LPC2103", tag, owner, clock, "lpc2103", __FILE__, 4, eARM_ARCHFLAGS_T, ENDIANNESS_LITTLE)
	28	: arm7_cpu_device(mconfig, LPC2103, "LPC2103", tag, owner, clock, "lpc2103", __FILE__, 4, eARM_ARCHFLAGS_T, ENDIANNESS_LITTLE),
	29	m_program_config("program", ENDIANNESS_LITTLE, 32, 32, 0, ADDRESS_MAP_NAME(lpc2103_map))
22	30	{
23	31	}
24	32
	33	READ32_MEMBER(lpc210x_device::arm_E01FC088_r)
	34	{
	35	return 0xffffffff;
	36	}
25	37
	38	READ32_MEMBER(lpc210x_device::flash_r)
	39	{
	40	UINT32 ret = (m_flash[offset * 4 + 3] << 24) |
	41	(m_flash[offset * 4 + 2] << 16) |
	42	(m_flash[offset * 4 + 1] << 8) |
	43	(m_flash[offset * 4 + 0] << 0);
	44	return ret;
	45	}
26	46
	47	WRITE32_MEMBER(lpc210x_device::flash_w)
	48	{
	49	//
	50	}
	51
	52
	53	const address_space_config *lpc210x_device::memory_space_config(address_spacenum spacenum) const
	54	{
	55	switch(spacenum)
	56	{
	57	case AS_PROGRAM:           return &m_program_config;
	58	default:                   return NULL;
	59	}
	60	}
	61
	62
	63
	64
27	65	//-------------------------------------------------
28	66	//  device_start - device-specific startup
29	67	//-------------------------------------------------

trunk/src/devices/cpu/arm7/lpc210x.h

r249967	r249968
26	26
27	27	// static configuration helpers
28	28
	29	// todo, use an appropriate flash type instead
	30	UINT8 m_flash[0x8000];
	31
	32
	33	DECLARE_READ32_MEMBER(arm_E01FC088_r);
	34	DECLARE_READ32_MEMBER(flash_r);
	35	DECLARE_WRITE32_MEMBER(flash_w);
	36
	37
29	38	protected:
30	39	// device-level overrides
31	40	virtual machine_config_constructor device_mconfig_additions() const;
32	41	virtual void device_start();
33	42	virtual void device_reset();
34	43
	44	virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const;
35	45
36	46	private:
	47	address_space_config m_program_config;
	48
37	49	};
38	50
39	51

https://github.com/mamedev/mame/commit/433b7efc19858bd78b9eb844262eac88b4893068

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