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cs4031: fix 16-bit dma

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This commit is contained in:
Dirk Best 2013-06-13 23:44:32 +00:00
parent ed212f0406
commit 7941a20ddd
2 changed files with 9 additions and 9 deletions
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6
src/mess/machine/cs4031.c
View File

@ -386,9 +386,9 @@ READ8_MEMBER( cs4031_device::dma_read_word )
return 0xff;
UINT16 result = m_space->read_word(page_offset() + (offset << 1));
m_dma_high_byte = result & 0xff00;
m_dma_high_byte = result >> 8;
return result & 0xff;
return result;
}
WRITE8_MEMBER( cs4031_device::dma_write_word )
@ -396,7 +396,7 @@ WRITE8_MEMBER( cs4031_device::dma_write_word )
if (m_dma_channel == -1)
return;
m_space->write_word(page_offset() + (offset << 1), m_dma_high_byte | data);
m_space->write_word(page_offset() + (offset << 1), (m_dma_high_byte << 8) | data);
}
WRITE_LINE_MEMBER( cs4031_device::dma2_dack0_w )

12
src/mess/machine/cs4031.h
View File

@ -106,16 +106,16 @@ public:
DECLARE_READ8_MEMBER( dma1_ior1_r ) { return m_read_ior(1); }
DECLARE_READ8_MEMBER( dma1_ior2_r ) { return m_read_ior(2); }
DECLARE_READ8_MEMBER( dma1_ior3_r ) { return m_read_ior(3); }
DECLARE_READ8_MEMBER( dma2_ior1_r ) { UINT16 result = m_read_ior(5); m_dma_high_byte = result & 0xff00; return result & 0xff; }
DECLARE_READ8_MEMBER( dma2_ior2_r ) { UINT16 result = m_read_ior(6); m_dma_high_byte = result & 0xff00; return result & 0xff; }
DECLARE_READ8_MEMBER( dma2_ior3_r ) { UINT16 result = m_read_ior(7); m_dma_high_byte = result & 0xff00; return result & 0xff; }
DECLARE_READ8_MEMBER( dma2_ior1_r ) { UINT16 result = m_read_ior(5); m_dma_high_byte = result >> 8; return result; }
DECLARE_READ8_MEMBER( dma2_ior2_r ) { UINT16 result = m_read_ior(6); m_dma_high_byte = result >> 8; return result; }
DECLARE_READ8_MEMBER( dma2_ior3_r ) { UINT16 result = m_read_ior(7); m_dma_high_byte = result >> 8; return result; }
DECLARE_WRITE8_MEMBER( dma1_iow0_w ) { m_write_iow(0, data, 0xffff); }
DECLARE_WRITE8_MEMBER( dma1_iow1_w ) { m_write_iow(1, data, 0xffff); }
DECLARE_WRITE8_MEMBER( dma1_iow2_w ) { m_write_iow(2, data, 0xffff); }
DECLARE_WRITE8_MEMBER( dma1_iow3_w ) { m_write_iow(3, data, 0xffff); }
DECLARE_WRITE8_MEMBER( dma2_iow1_w ) { m_write_iow(5, m_dma_high_byte | data, 0xffff); }
DECLARE_WRITE8_MEMBER( dma2_iow2_w ) { m_write_iow(6, m_dma_high_byte | data, 0xffff); }
DECLARE_WRITE8_MEMBER( dma2_iow3_w ) { m_write_iow(7, m_dma_high_byte | data, 0xffff); }
DECLARE_WRITE8_MEMBER( dma2_iow1_w ) { m_write_iow(5, (m_dma_high_byte << 8) | data, 0xffff); }
DECLARE_WRITE8_MEMBER( dma2_iow2_w ) { m_write_iow(6, (m_dma_high_byte << 8) | data, 0xffff); }
DECLARE_WRITE8_MEMBER( dma2_iow3_w ) { m_write_iow(7, (m_dma_high_byte << 8) | data, 0xffff); }
DECLARE_WRITE_LINE_MEMBER( dma1_dack0_w ) { set_dma_channel(0, state); }
DECLARE_WRITE_LINE_MEMBER( dma1_dack1_w ) { set_dma_channel(1, state); }
DECLARE_WRITE_LINE_MEMBER( dma1_dack2_w ) { set_dma_channel(2, state); }