Revision 19
Added by markw over 11 years ago
| common/a8core/atari800core_simple_sdram.vhd | ||
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SDRAM_WRITE_ENABLE : out std_logic;
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SDRAM_ADDR : out STD_LOGIC_VECTOR(22 DOWNTO 0);
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SDRAM_DO : in STD_LOGIC_VECTOR(31 DOWNTO 0);
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SDRAM_DI : out STD_LOGIC_VECTOR(31 DOWNTO 0);
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SDRAM_32BIT_WRITE_ENABLE : out std_logic;
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SDRAM_16BIT_WRITE_ENABLE : out std_logic;
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SDRAM_8BIT_WRITE_ENABLE : out std_logic;
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-- DMA memory map differs
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-- e.g. some special addresses to read behind hardware registers
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CART_RD4 <= '0';
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CART_RD5 <= '0';
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-- Since we're not exposing PBI, expose a few key parts needed for SDRAM
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SDRAM_DI <= PBI_WRITE_DATA;
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-- Internal rom/ram
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internalromram1 : entity work.internalromram
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GENERIC MAP
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PBI_WRITE_ENABLE => open,
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PBI_SNOOP_DATA => open,
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PBI_WRITE_DATA => PBI_WRITE_DATA,
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PBI_WIDTH_8bit_ACCESS => open,
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PBI_WIDTH_16bit_ACCESS => open,
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PBI_WIDTH_32bit_ACCESS => open,
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PBI_WIDTH_8bit_ACCESS => SDRAM_8BIT_WRITE_ENABLE,
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PBI_WIDTH_16bit_ACCESS => SDRAM_16BIT_WRITE_ENABLE,
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PBI_WIDTH_32bit_ACCESS => SDRAM_32BIT_WRITE_ENABLE,
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PBI_ROM_DO => "11111111",
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PBI_REQUEST => open,
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Also available in: Unified diff
Pass through some PBI signals needed for SDRAM