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iCE40 bram progress

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This commit is contained in:
Clifford Wolf 2015-04-24 15:38:11 +02:00
parent 308a59aa18
commit 687f5a5b12
2 changed files with 35 additions and 16 deletions
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39
techlibs/ice40/brams_map.v
View file

@ -20,23 +20,23 @@ module \$__ICE40_RAM4K_M0 (CLK2, CLK3, A1ADDR, A1DATA, B1ADDR, B1DATA, B1EN);
case ({CLKPOL2, CLKPOL3})
2'b00:
SB_RAM40_4KNRNW #(.WRITE_MODE(0), .READ_MODE(0)) _TECHMAP_REPLACE_ (
.RDATA(A1DATA), .RADDR(A1ADDR_11), .RCLK(CLK2), .RCLKE(1'b1), .RE(1'b1),
.WDATA(B1DATA), .WADDR(B1ADDR_11), .MASK(B1EN), .WCLK(CLK3), .WCLKE(1'b1), .WE(|B1EN)
.RDATA(A1DATA), .RADDR(A1ADDR_11), .RCLK(CLK2), .RCLKE(1'b1), .RE(1'b1),
.WDATA(B1DATA), .WADDR(B1ADDR_11), .MASK(~B1EN), .WCLK(CLK3), .WCLKE(1'b1), .WE(|B1EN)
);
2'b01:
SB_RAM40_4KNR #(.WRITE_MODE(0), .READ_MODE(0)) _TECHMAP_REPLACE_ (
.RDATA(A1DATA), .RADDR(A1ADDR_11), .RCLK(CLK2), .RCLKE(1'b1), .RE(1'b1),
.WDATA(B1DATA), .WADDR(B1ADDR_11), .MASK(B1EN), .WCLK(CLK3), .WCLKE(1'b1), .WE(|B1EN)
.RDATA(A1DATA), .RADDR(A1ADDR_11), .RCLK(CLK2), .RCLKE(1'b1), .RE(1'b1),
.WDATA(B1DATA), .WADDR(B1ADDR_11), .MASK(~B1EN), .WCLK(CLK3), .WCLKE(1'b1), .WE(|B1EN)
);
2'b10:
SB_RAM40_4KNW #(.WRITE_MODE(0), .READ_MODE(0)) _TECHMAP_REPLACE_ (
.RDATA(A1DATA), .RADDR(A1ADDR_11), .RCLK(CLK2), .RCLKE(1'b1), .RE(1'b1),
.WDATA(B1DATA), .WADDR(B1ADDR_11), .MASK(B1EN), .WCLK(CLK3), .WCLKE(1'b1), .WE(|B1EN)
.RDATA(A1DATA), .RADDR(A1ADDR_11), .RCLK(CLK2), .RCLKE(1'b1), .RE(1'b1),
.WDATA(B1DATA), .WADDR(B1ADDR_11), .MASK(~B1EN), .WCLK(CLK3), .WCLKE(1'b1), .WE(|B1EN)
);
2'b11:
SB_RAM40_4K #(.WRITE_MODE(0), .READ_MODE(0)) _TECHMAP_REPLACE_ (
.RDATA(A1DATA), .RADDR(A1ADDR_11), .RCLK(CLK2), .RCLKE(1'b1), .RE(1'b1),
.WDATA(B1DATA), .WADDR(B1ADDR_11), .MASK(B1EN), .WCLK(CLK3), .WCLKE(1'b1), .WE(|B1EN)
.RDATA(A1DATA), .RADDR(A1ADDR_11), .RCLK(CLK2), .RCLKE(1'b1), .RE(1'b1),
.WDATA(B1DATA), .WADDR(B1ADDR_11), .MASK(~B1EN), .WCLK(CLK3), .WCLKE(1'b1), .WE(|B1EN)
);
endcase
endgenerate
@ -67,9 +67,26 @@ module \$__ICE40_RAM4K_M123 (CLK2, CLK3, A1ADDR, A1DATA, B1ADDR, B1DATA, B1EN);
wire [10:0] A1ADDR_11 = A1ADDR;
wire [10:0] B1ADDR_11 = B1ADDR;
wire [15:0] A1DATA_16;
wire [15:0] B1DATA_16 = B1DATA;
assign A1DATA = A1DATA_16;
wire [15:0] A1DATA_16, B1DATA_16;
generate
if (MODE == 1) begin
assign A1DATA = {A1DATA_16[14], A1DATA_16[12], A1DATA_16[10], A1DATA_16[ 8],
A1DATA_16[ 6], A1DATA_16[ 4], A1DATA_16[ 2], A1DATA_16[ 0]};
assign B1DATA_16 = {B1DATA[7], B1DATA[7], B1DATA[6], B1DATA[6], B1DATA[5], B1DATA[5], B1DATA[4], B1DATA[4],
B1DATA[3], B1DATA[3], B1DATA[2], B1DATA[2], B1DATA[1], B1DATA[1], B1DATA[0], B1DATA[0]};
end
if (MODE == 2) begin
assign A1DATA = {A1DATA_16[13], A1DATA_16[9], A1DATA_16[5], A1DATA_16[1]};
assign B1DATA_16 = {B1DATA[3], B1DATA[3], B1DATA[3], B1DATA[3], B1DATA[2], B1DATA[2], B1DATA[2], B1DATA[2],
B1DATA[1], B1DATA[1], B1DATA[1], B1DATA[1], B1DATA[0], B1DATA[0], B1DATA[0], B1DATA[0]};
end
if (MODE == 3) begin
assign A1DATA = {A1DATA_16[11], A1DATA_16[3]};
assign B1DATA_16 = {B1DATA[1], B1DATA[1], B1DATA[1], B1DATA[1], B1DATA[1], B1DATA[1], B1DATA[1], B1DATA[1],
B1DATA[0], B1DATA[0], B1DATA[0], B1DATA[0], B1DATA[0], B1DATA[0], B1DATA[0], B1DATA[0]};
end
endgenerate
generate
case ({CLKPOL2, CLKPOL3})

12
techlibs/ice40/tests/test_bram_tb.v
View file

@ -79,14 +79,14 @@ module bram_tb #(
clk <= 0;
for (i = 0; i < 512; i = i+1) begin
WR_DATA <= xorshift64_state;
WR_DATA = xorshift64_state;
xorshift64_next;
WR_ADDR <= getaddr(i < 256 ? i[7:4] : xorshift64_state[63:60]);
WR_ADDR = getaddr(i < 256 ? i[7:4] : xorshift64_state[63:60]);
xorshift64_next;
RD_ADDR <= getaddr(i < 256 ? i[3:0] : xorshift64_state[59:56]);
WR_EN <= xorshift64_state[55];
RD_ADDR = getaddr(i < 256 ? i[3:0] : xorshift64_state[59:56]);
WR_EN = xorshift64_state[55] && (WR_ADDR != RD_ADDR);
xorshift64_next;
#1; clk <= 1;
@ -98,7 +98,9 @@ module bram_tb #(
for (j = 0; j < DBITS; j = j+1)
expected_rd_masked[j] = expected_rd[j] !== 1'bx ? expected_rd[j] : RD_DATA[j];
$display("#OUT# %3d | WA=%x WD=%x WE=%x | RA=%x RD=%x (%x) | %s", i, WR_ADDR, WR_DATA, WR_EN, RD_ADDR, RD_DATA, expected_rd, expected_rd_masked === RD_DATA ? "ok" : "ERROR");
$display("#OUT# %3d | WA=%x WD=%x WE=%x | RA=%x RD=%x (%x) | %s",
i, WR_ADDR, WR_DATA, WR_EN, RD_ADDR, RD_DATA, expected_rd,
expected_rd_masked === RD_DATA ? "ok" : "ERROR");
if (expected_rd_masked !== RD_DATA) begin -> error; end
end
end