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fsm: consistent spacing

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This commit is contained in:
Jörg Thalheim 2015-01-14 10:42:14 +01:00
parent f7ce004d4d
commit 4d93ceb744
1 changed files with 33 additions and 18 deletions
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51
cadence/heron_ctrl/functional/verilog.v
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@ -2,7 +2,6 @@
module heron_ctrl(
ctrl_bus,
// rest
state,
ready,
ram_rd_en,
@ -14,8 +13,13 @@ module heron_ctrl(
parameter MINUS = 1'b1;
input [3:0] state;
output ready;
reg ready = OFF;
output ram_rd_en, ram_wr_en;
reg ram_rd_en = OFF;
reg ram_wr_en = OFF;
output [22:0] ctrl_bus;
`define CTRL_WIRE(name,port) \
@ -24,9 +28,6 @@ module heron_ctrl(
`include "heron_ctrl_wires.v"
`undef CTRL_WIRE
reg ready = OFF;
reg ram_rd_en = OFF;
reg ram_wr_en = OFF;
always @(state) begin
ready = OFF;
@ -42,41 +43,49 @@ module heron_ctrl(
ready = ON;
end
`LD_N_1: begin
ram_rd_en = ON;
k0_to_a = ON;
a_to_eab = ON;
edb_to_din = ON;
ram_rd_en = ON;
end
`LD_N_2: begin
din_to_a = ON;
k0_to_b = ON;
alu_set_z = ON;
din_to_a = ON;
k0_to_b = ON;
end
`I_GT_ZERO: begin
alu_res_to_a = ON;
a_to_i = ON;
end
`LD_S_1: begin
i_to_a = ON;
edb_to_din = ON;
a_to_eab = ON;
ram_rd_en = ON;
i_to_a = ON;
a_to_eab = ON;
edb_to_din = ON;
end
`LD_S_2: begin
din_to_a = ON;
a_to_s = ON;
k1_to_b = ON;
alu_mode = MINUS;
alu_set_s = ON;
alu_set_z = ON;
din_to_a = ON;
a_to_s = ON;
k1_to_b = ON;
end
`S_GT_ONE:; // noop
`X_1: begin
s_to_a_shift_1 = ON;
s_to_b = ON;
a_to_old_x = ON;
a_to_x = ON;
s_to_b = ON;
end
`DIV_1: begin
x_to_a = ON;
@ -104,14 +113,20 @@ module heron_ctrl(
a_to_old_x = ON;
end
`STORE_X: begin
x_to_b_shifted = ON;
ram_wr_en = ON;
i_to_a = ON;
a_to_eab = ON;
x_to_b_shifted = ON;
end
`DEC_I: begin
i_to_a = ON;
k1_to_b = ON;
alu_mode = MINUS;
alu_set_z = ON;
i_to_a = ON;
k1_to_b = ON;
end
endcase
end