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General CoCo Cartridge Fixes (#4050)

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* Fixed 16k cartridge banking for all CoCos. Fixed 32k external ROM mode for CoCo 3

* Turned off some logging
This commit is contained in:
tim lindner 2018-10-03 09:34:04 -07:00 committed by R. Belmont
parent f0f23e29a1
commit 6cd6b3a2c1
4 changed files with 17 additions and 5 deletions
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2
src/devices/bus/coco/coco_pak.cpp
View File

@ -199,7 +199,7 @@ uint8_t *coco_pak_banked_device::get_cart_base()
uint32_t coco_pak_banked_device::get_cart_size()
{
return 0x4000;
return 0x20000;
}
//-------------------------------------------------

3
src/mame/machine/6883sam.cpp
View File

@ -156,6 +156,9 @@ void sam6883_device::configure_bank(int bank, uint8_t *memory, uint32_t memory_s
/* if we're configuring a bank that never changes, update it now */
switch(bank)
{
case 3:
m_space_C000.point(m_banks[3], m_banks[3].m_memory_offset);
break;
case 4:
m_space_FF00.point(m_banks[4], 0x0000);
break;

2
src/mame/machine/coco_vhd.cpp
View File

@ -48,7 +48,7 @@
CONSTANTS
***************************************************************************/
#define VERBOSE 1
#define VERBOSE 0
#define VHDSTATUS_OK 0x00
#define VHDSTATUS_NO_VHD_ATTACHED 0x02

15
src/mame/video/gime.cpp
View File

@ -86,6 +86,7 @@
//**************************************************************************
// CONSTANTS
//**************************************************************************
@ -97,6 +98,7 @@
#define LOG_INT_MASKING 0
#define LOG_GIME 0
#define LOG_TIMER 0
#define LOG_PALETTE 0
@ -552,12 +554,15 @@ void gime_device::update_memory(int bank)
// we're in ROM
static const uint8_t rom_map[4][4] =
{
{ 0, 1, 6, 7 },
{ 0, 1, 6, 7 },
{ 0, 1, 4, 5 },
{ 0, 1, 4, 5 },
{ 0, 1, 2, 3 },
{ 4, 5, 6, 7 }
{ 6, 7, 4, 5 }
};
// Pin ROM page to MMU slot
block = (block & 0xfc) | (bank & 0x03);
// look up the block in the ROM map
block = rom_map[m_gime_registers[0] & 3][(block & 0x3F) - 0x3C];
@ -1005,6 +1010,10 @@ inline void gime_device::write_palette_register(offs_t offset, uint8_t data)
{
offset &= 0x0F;
// perform logging
if (LOG_PALETTE)
logerror("%s: CoCo3 Palette: $%04x <== $%02x\n", describe_context(), offset + 0xffB0, data);
/* has this entry changed? */
if (m_palette_rotated[m_palette_rotated_position][offset] != data)
{