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Diffstat (limited to 'src/devices/cpu/sh/sh_dmac.cpp')
-rw-r--r--src/devices/cpu/sh/sh_dmac.cpp115
1 files changed, 115 insertions, 0 deletions
diff --git a/src/devices/cpu/sh/sh_dmac.cpp b/src/devices/cpu/sh/sh_dmac.cpp
new file mode 100644
index 00000000000..39775445ba9
--- /dev/null
+++ b/src/devices/cpu/sh/sh_dmac.cpp
@@ -0,0 +1,115 @@
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galibert
+/***************************************************************************
+
+ sh_dmac.h
+
+ SH DMA controller
+
+***************************************************************************/
+
+#include "emu.h"
+#include "sh_dmac.h"
+#include "sh7042.h"
+
+DEFINE_DEVICE_TYPE(SH_DMAC, sh_dmac_device, "sh_dmac", "SH DMA controller")
+DEFINE_DEVICE_TYPE(SH_DMAC_CHANNEL, sh_dmac_channel_device, "sh_dmac_channel", "SH DMA controller channel")
+
+sh_dmac_device::sh_dmac_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) :
+ device_t(mconfig, SH_DMAC, tag, owner, clock),
+ m_cpu(*this, finder_base::DUMMY_TAG)
+{
+}
+
+void sh_dmac_device::device_start()
+{
+ save_item(NAME(m_dmaor));
+}
+
+void sh_dmac_device::device_reset()
+{
+ m_dmaor = 0;
+}
+
+u16 sh_dmac_device::dmaor_r()
+{
+ logerror("dmaor_r\n");
+ return m_dmaor;
+}
+
+void sh_dmac_device::dmaor_w(offs_t, u16 data, u16 mem_mask)
+{
+ COMBINE_DATA(&m_dmaor);
+ logerror("dmaor_w %04x\n", m_dmaor);
+}
+
+sh_dmac_channel_device::sh_dmac_channel_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) :
+ device_t(mconfig, SH_DMAC_CHANNEL, tag, owner, clock),
+ m_cpu(*this, finder_base::DUMMY_TAG),
+ m_intc(*this, finder_base::DUMMY_TAG)
+{
+}
+
+void sh_dmac_channel_device::device_start()
+{
+ save_item(NAME(m_sar));
+ save_item(NAME(m_dar));
+ save_item(NAME(m_dmatcr));
+ save_item(NAME(m_chcr));
+}
+
+void sh_dmac_channel_device::device_reset()
+{
+ m_sar = 0;
+ m_dar = 0;
+ m_dmatcr = 0;
+ m_chcr = 0;
+}
+
+u32 sh_dmac_channel_device::sar_r()
+{
+ logerror("sar_r\n");
+ return m_sar;
+}
+
+void sh_dmac_channel_device::sar_w(offs_t, u32 data, u32 mem_mask)
+{
+ COMBINE_DATA(&m_sar);
+ logerror("sar_w %08x\n", m_sar);
+}
+
+u32 sh_dmac_channel_device::dar_r()
+{
+ logerror("dar_r\n");
+ return m_dar;
+}
+
+void sh_dmac_channel_device::dar_w(offs_t, u32 data, u32 mem_mask)
+{
+ COMBINE_DATA(&m_dar);
+ logerror("dar_w %08x\n", m_dar);
+}
+
+u32 sh_dmac_channel_device::dmatcr_r()
+{
+ logerror("dmatcr_r\n");
+ return m_dmatcr;
+}
+
+void sh_dmac_channel_device::dmatcr_w(offs_t, u32 data, u32 mem_mask)
+{
+ COMBINE_DATA(&m_dmatcr);
+ logerror("dmatcr_w %08x\n", m_dmatcr);
+}
+
+u32 sh_dmac_channel_device::chcr_r()
+{
+ logerror("chcr_r\n");
+ return m_chcr;
+}
+
+void sh_dmac_channel_device::chcr_w(offs_t, u32 data, u32 mem_mask)
+{
+ COMBINE_DATA(&m_chcr);
+ logerror("chcr_w %08x\n", m_chcr);
+}