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r19892 Friday 28th December, 2012 at 12:02:05 UTC by Nathan Woods
[COCO1/2] Fixing garbled display when displaying video ram above $8000 and in ROM/RAM mode  (mametesters #5031)

[src/emu/machine]	ram.h
[src/mess/machine]	coco12.c

trunk/src/emu/machine/ram.h

r19891	r19892
58	58	static UINT32 parse_string(const char *s);
59	59	UINT32 default_size(void) const;
60	60	const char *extra_options(void) const { return m_extra_options; }
	61
	62	// read/write
	63	UINT8 read(offs_t offset)            { return m_pointer[offset % m_size]; }
	64	void write(offs_t offset, UINT8 data)   { m_pointer[offset % m_size] = data; }
61	65
62	66	// inline configuration helpers
63	67	static void static_set_default_size(device_t &device, const char *default_size)      { downcast<ram_device &>(device).m_default_size = default_size; }

trunk/src/mess/machine/coco12.c

r19891	r19892
80	80
81	81	READ8_MEMBER( coco12_state::sam_read )
82	82	{
83		UINT8 data = m_sam->mpu_address_space()->read_byte(offset);
	83	UINT8 data = m_ram->read(offset);
84	84	m_vdg->as_w(data & 0x80 ? ASSERT_LINE : CLEAR_LINE);
85	85	m_vdg->inv_w(data & 0x40 ? ASSERT_LINE : CLEAR_LINE);
86	86	return data;

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