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[COCO1/2] Fixing garbled display when displaying video ram above $8000 and in

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ROM/RAM mode  (mametesters #5031)
This commit is contained in:
Nathan Woods 2012-12-28 12:02:05 +00:00
parent 28b9ef0a6d
commit a45204f19c
2 changed files with 5 additions and 1 deletions
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4
src/emu/machine/ram.h
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@ -59,6 +59,10 @@ public:
UINT32 default_size(void) const; UINT32 default_size(void) const;
const char *extra_options(void) const { return m_extra_options; } const char *extra_options(void) const { return m_extra_options; }
// read/write
UINT8 read(offs_t offset) { return m_pointer[offset % m_size]; }
void write(offs_t offset, UINT8 data) { m_pointer[offset % m_size] = data; }
// inline configuration helpers // inline configuration helpers
static void static_set_default_size(device_t &device, const char *default_size) { downcast<ram_device &>(device).m_default_size = default_size; } static void static_set_default_size(device_t &device, const char *default_size) { downcast<ram_device &>(device).m_default_size = default_size; }
static void static_set_extra_options(device_t &device, const char *extra_options) { downcast<ram_device &>(device).m_extra_options = extra_options; } static void static_set_extra_options(device_t &device, const char *extra_options) { downcast<ram_device &>(device).m_extra_options = extra_options; }

2
src/mess/machine/coco12.c
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@ -80,7 +80,7 @@ WRITE_LINE_MEMBER( coco12_state::field_sync )
READ8_MEMBER( coco12_state::sam_read ) READ8_MEMBER( coco12_state::sam_read )
{ {
UINT8 data = m_sam->mpu_address_space()->read_byte(offset); UINT8 data = m_ram->read(offset);
m_vdg->as_w(data & 0x80 ? ASSERT_LINE : CLEAR_LINE); m_vdg->as_w(data & 0x80 ? ASSERT_LINE : CLEAR_LINE);
m_vdg->inv_w(data & 0x40 ? ASSERT_LINE : CLEAR_LINE); m_vdg->inv_w(data & 0x40 ? ASSERT_LINE : CLEAR_LINE);
return data; return data;