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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz
/**********************************************************************
SGI CRIME skeleton device
**********************************************************************/
#include "emu.h"
#include "video/crime.h"
#define LOG_UNKNOWN (1 << 0U)
#define LOG_READS (1 << 1U)
#define LOG_WRITES (1 << 2U)
#define LOG_ALL (LOG_UNKNOWN | LOG_READS | LOG_WRITES)
#define VERBOSE (LOG_ALL)
#include "logmacro.h"
DEFINE_DEVICE_TYPE(SGI_CRIME, crime_device, "sgicrime", "SGI CRIME")
crime_device::crime_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, SGI_CRIME, tag, owner, clock)
, m_maincpu(*this, finder_base::DUMMY_TAG)
{
}
void crime_device::device_start()
{
save_item(NAME(m_mem_bank_ctrl));
}
void crime_device::device_reset()
{
memset(m_mem_bank_ctrl, 0, sizeof(uint64_t) * 8);
}
//**************************************************************************
// DEVICE HARDWARE
//**************************************************************************
void crime_device::device_add_mconfig(machine_config &config)
{
}
void crime_device::map(address_map &map)
{
map(0x00000000, 0x000003ff).rw(FUNC(crime_device::base_r), FUNC(crime_device::base_w));
}
//**************************************************************************
// REGISTER ACCESS
//**************************************************************************
uint64_t crime_device::base_r(offs_t offset, uint64_t mem_mask)
{
uint64_t ret = 0ULL;
switch (offset)
{
case 0x000000/8:
ret = 1ULL;
LOGMASKED(LOG_READS, "%s: CRIME: ID Read: %08x%08x & %08x%08x\n", machine().describe_context()
, (uint32_t)(ret >> 32), (uint32_t)ret, (uint32_t)(mem_mask >> 32), (uint32_t)mem_mask);
break;
case 0x000208/8:
case 0x000210/8:
case 0x000218/8:
case 0x000220/8:
case 0x000228/8:
case 0x000230/8:
case 0x000238/8:
case 0x000240/8:
{
const uint32_t index = offset - 0x000208/8;
ret = m_mem_bank_ctrl[index];
LOGMASKED(LOG_READS, "%s: CRIME: Memory Bank %d Control Read: %08x%08x & %08x%08x\n", machine().describe_context(), index
, (uint32_t)(ret >> 32), (uint32_t)ret, (uint32_t)(mem_mask >> 32), (uint32_t)mem_mask);
break;
}
default:
LOGMASKED(LOG_UNKNOWN | LOG_READS, "%s: CRIME: Unknown Read: [%08x] & %08x%08x\n", machine().describe_context()
, 0x14000000 + offset*8, (uint32_t)(mem_mask >> 32), (uint32_t)mem_mask);
break;
}
return ret;
}
void crime_device::base_w(offs_t offset, uint64_t data, uint64_t mem_mask)
{
switch (offset)
{
case 0x000208/8:
case 0x000210/8:
case 0x000218/8:
case 0x000220/8:
case 0x000228/8:
case 0x000230/8:
case 0x000238/8:
case 0x000240/8:
{
const uint32_t index = offset - 0x000208/8;
LOGMASKED(LOG_WRITES, "%s: CRIME: Memory Bank %d Control Write: %08x%08x & %08x%08x\n", machine().describe_context(), index
, (uint32_t)(data >> 32), (uint32_t)data, (uint32_t)(mem_mask >> 32), (uint32_t)mem_mask);
m_mem_bank_ctrl[index] = data;
break;
}
default:
LOGMASKED(LOG_UNKNOWN | LOG_WRITES, "%s: CRIME: Unknown Write: %08x = %08x%08x & %08x%08x\n", machine().describe_context(), 0x14000000 + offset*8
, (uint32_t)(data >> 32), (uint32_t)data, (uint32_t)(mem_mask >> 32), (uint32_t)mem_mask);
return;
}
}
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