42ad901ba4
Add 16x16 multiplier. Pretty simple. Address 0-1 is multipled by address 2-3 and the result is in address 4-7, all little endian of course.
18 lines
444 B
Systemverilog
18 lines
444 B
Systemverilog
module addr_decode
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(
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input [15:0] i_addr,
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output o_rom_cs,
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output o_leds_cs,
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output o_timer_cs,
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output o_multiplier_cs,
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output o_sdram_cs
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);
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assign o_rom_cs = i_addr >= 16'hf000 && i_addr <= 16'hffff;
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assign o_timer_cs = i_addr >= 16'heff8 && i_addr <= 16'heffb;
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assign o_multiplier_cs = i_addr >= 16'heff0 && i_addr <= 16'heff7;
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assign o_leds_cs = i_addr == 16'hefff;
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assign o_sdram_cs = i_addr < 16'h8000;
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endmodule |