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-newport: Converted to 64-bit read/write handlers. Fixes graphics DMA. [Ryan Holtz]

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This commit is contained in:
Ryan Holtz 2019-02-11 09:19:42 +01:00
parent a9f751387c
commit b07f23632a
3 changed files with 1134 additions and 804 deletions
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12
src/mame/machine/sgi.cpp
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@ -22,7 +22,7 @@
#define LOG_DMA (1 << 8)
#define LOG_DEFAULT (LOG_READS | LOG_WRITES | LOG_RPSS | LOG_WATCHDOG | LOG_UNKNOWN)
#define VERBOSE (LOG_DMA)
#define VERBOSE (0)
#include "logmacro.h"
DEFINE_DEVICE_TYPE(SGI_MC, sgi_mc_device, "sgi_mc", "SGI Memory Controller")
@ -252,19 +252,13 @@ void sgi_mc_device::dma_tick()
if ((m_dma_count & 0x0000ffff) == 0)
{ // If remaining byte count is 0, deduct zoom count
if (!BIT(m_dma_mode, 3))
logerror("Remaining DMA byte count is 0, count register contains %08x, deducting a zoom line\n", m_dma_count);
m_dma_count -= 0x00010000;
if (m_dma_count == 0)
{ // If remaining zoom count is also 0, move to next line
m_dma_mem_addr += m_dma_stride & 0x0000ffff;
m_dma_size -= 0x00010000;
if (!BIT(m_dma_mode, 3))
logerror("Remaining DMA zoom count is also 0, deducting a line, DMA size now %08x\n", m_dma_size);
if ((m_dma_size & 0xffff0000) == 0)
{ // If no remaining lines, DMA is done.
if (!BIT(m_dma_mode, 3))
logerror("No remaining lines, DMA is done\n");
m_dma_timer->adjust(attotime::never);
m_dma_run |= (1 << 3);
m_dma_run &= ~(1 << 6);
@ -276,16 +270,12 @@ void sgi_mc_device::dma_tick()
else
{
m_dma_count = (m_dma_stride & 0x03ff0000) | (m_dma_size & 0x0000ffff);
if (!BIT(m_dma_mode, 3))
logerror("Reloading DMA count with %08x\n", m_dma_count);
}
}
else
{ // If remaining zoom count is non-zero, reload byte count and return source address to the beginning of the line.
m_dma_count |= m_dma_size & 0x0000ffff;
m_dma_mem_addr -= m_dma_size & 0x0000ffff;
if (!BIT(m_dma_mode, 3))
logerror("Remaining DMA zoom count is non-zero, returning source address to beginning, DMA count now %08x\n", m_dma_count);
}
}
}

1919
src/mame/video/newport.cpp
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File diff suppressed because it is too large Load Diff

7
src/mame/video/newport.h
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@ -24,8 +24,8 @@ public:
newport_video_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
DECLARE_READ32_MEMBER(rex3_r);
DECLARE_WRITE32_MEMBER(rex3_w);
DECLARE_READ64_MEMBER(rex3_r);
DECLARE_WRITE64_MEMBER(rex3_w);
uint32_t screen_update(screen_device &device, bitmap_rgb32 &bitmap, const rectangle &cliprect);
@ -134,8 +134,7 @@ private:
uint32_t m_write_mask;
uint32_t m_zero_fract;
uint32_t m_zero_overflow;
uint32_t m_host_dataport_msw;
uint32_t m_host_dataport_lsw;
uint64_t m_host_dataport;
uint32_t m_dcb_mode;
uint32_t m_dcb_reg_select;
uint32_t m_dcb_slave_select;