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https://opencores.org/ocsvn/light8080/light8080/trunk
[/] [light8080/] [trunk/] [vhdl/] [soc/] [l80pkg.vhdl] - Diff between revs 70 and 80
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| Rev 70 |
Rev 80 |
| Line 37... |
Line 37... |
-- size: Size of the target memory.
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-- size: Size of the target memory.
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-- Returns ram_t value size-bytes long, suitable for synth-time initialization
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-- Returns ram_t value size-bytes long, suitable for synth-time initialization
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-- of a BRAM.
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-- of a BRAM.
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function objcode_to_bram(oC : obj_code_t; size : integer) return ram_t;
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function objcode_to_bram(oC : obj_code_t; size : integer) return ram_t;
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-- Compute log2(A), rounding up.
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-- Use this to get the minimum width of the address bus necessary to
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-- address A locations.
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function log2(A : natural) return natural;
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end package;
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end package;
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package body l80pkg is
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package body l80pkg is
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| Line 68... |
Line 72... |
br(obj_size to size-1) := (others => x"00");
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br(obj_size to size-1) := (others => x"00");
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return br;
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return br;
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end function objcode_to_bram;
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end function objcode_to_bram;
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function log2(A : natural) return natural is
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begin
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for I in 1 to 30 loop -- Works for up to 32 bit integers
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if(2**I >= A) then
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return(I);
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end if;
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end loop;
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return(30);
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end function log2;
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end package body;
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end package body;
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