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dmac_0266: misc fixes (nw)

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This commit is contained in:
Patrick Mackinlay 2020-05-05 14:57:55 +07:00
parent 2fb3c89b01
commit 73a9d1710f
2 changed files with 11 additions and 5 deletions
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10
src/mame/machine/dmac_0266.cpp
View File

@ -36,9 +36,9 @@ dmac_0266_device::dmac_0266_device(machine_config const &mconfig, char const *ta
void dmac_0266_device::map(address_map &map)
{
map(0x00, 0x03).w(FUNC(dmac_0266_device::control_w));
map(0x00, 0x03).rw(FUNC(dmac_0266_device::control_r), FUNC(dmac_0266_device::control_w));
map(0x04, 0x07).r(FUNC(dmac_0266_device::status_r));
map(0x08, 0x0b).w(FUNC(dmac_0266_device::tcount_w));
map(0x08, 0x0b).rw(FUNC(dmac_0266_device::tcount_r), FUNC(dmac_0266_device::tcount_w));
map(0x0c, 0x0f).w(FUNC(dmac_0266_device::tag_w));
map(0x10, 0x13).w(FUNC(dmac_0266_device::offset_w));
map(0x14, 0x17).w(FUNC(dmac_0266_device::entry_w));
@ -46,7 +46,7 @@ void dmac_0266_device::map(address_map &map)
void dmac_0266_device::device_start()
{
m_eop.resolve();
m_eop.resolve_safe();
m_dma_r.resolve_safe(0);
m_dma_w.resolve_safe();
@ -77,6 +77,7 @@ void dmac_0266_device::device_reset()
void dmac_0266_device::soft_reset()
{
// soft reset does not clear map entries
m_control = 0;
m_status = 0;
m_tcount = 0;
m_tag = 0;
@ -122,6 +123,7 @@ void dmac_0266_device::control_w(u32 data)
m_dma_check->enable(false);
}
m_control = data;
m_status = data & (ENABLE | DIRECTION);
}
else
@ -142,7 +144,7 @@ void dmac_0266_device::dma_check(void *ptr, s32 param)
if (!m_tcount)
return;
u32 const address = u32(m_map[m_tag & 0x7f]) << 12 | (m_offset & 0xfff);
u32 const address = (m_map[m_tag & 0x7f] << 12) | (m_offset & 0xfff);
// assert eop during last transfer
if (m_tcount == 1)

6
src/mame/machine/dmac_0266.h
View File

@ -28,8 +28,11 @@ protected:
virtual void device_reset() override;
// register handlers
void control_w(u32 data);
u32 control_r() { return m_control; }
u32 status_r() { return m_status; }
u32 tcount_r() { return m_tcount; }
void control_w(u32 data);
void tcount_w(offs_t offset, u32 data, u32 mem_mask) { COMBINE_DATA(&m_tcount); }
void tag_w(offs_t offset, u32 data, u32 mem_mask) { COMBINE_DATA(&m_tag); }
void offset_w(offs_t offset, u32 data, u32 mem_mask) { COMBINE_DATA(&m_offset); }
@ -59,6 +62,7 @@ private:
};
// registers
u32 m_control;
u32 m_status;
u32 m_tcount;
u32 m_tag;