diff options
Diffstat (limited to 'src/rtl')
| -rw-r--r-- | src/rtl/modexpa7_exponentiator.v | 212 |
1 files changed, 132 insertions, 80 deletions
diff --git a/src/rtl/modexpa7_exponentiator.v b/src/rtl/modexpa7_exponentiator.v index e34a7ab..cda6882 100644 --- a/src/rtl/modexpa7_exponentiator.v +++ b/src/rtl/modexpa7_exponentiator.v @@ -60,6 +60,7 @@ module modexpa7_exponentiator # output [OPERAND_ADDR_WIDTH-1:0] m_bram_addr,
output [OPERAND_ADDR_WIDTH-1:0] d_bram_addr,
+ output [OPERAND_ADDR_WIDTH-1:0] f_bram_addr,
output [OPERAND_ADDR_WIDTH-1:0] n1_bram_addr,
output [OPERAND_ADDR_WIDTH-1:0] n2_bram_addr,
output [OPERAND_ADDR_WIDTH-1:0] n_coeff1_bram_addr,
@@ -68,6 +69,7 @@ module modexpa7_exponentiator # input [ 32-1:0] m_bram_out,
input [ 32-1:0] d_bram_out,
+ input [ 32-1:0] f_bram_out,
input [ 32-1:0] n1_bram_out,
input [ 32-1:0] n2_bram_out,
input [ 32-1:0] n_coeff1_bram_out,
@@ -84,7 +86,7 @@ module modexpa7_exponentiator # //
// FSM Declaration
//
- localparam [ 7: 0] FSM_STATE_EXP_IDLE = 8'h00;
+ localparam [ 7: 0] FSM_STATE_EXP_IDLE = 8'h00;
//
localparam [ 7: 0] FSM_STATE_EXP_INIT_1 = 8'hA1;
localparam [ 7: 0] FSM_STATE_EXP_INIT_2 = 8'hA2;
@@ -121,7 +123,7 @@ module modexpa7_exponentiator # localparam [ 7: 0] FSM_STATE_MUL_CALC_2 = 8'h22;
localparam [ 7: 0] FSM_STATE_MUL_CALC_3 = 8'h23;
//
- localparam [ 7: 0] FSM_STATE_EXP_STOP = 8'hFF;
+ localparam [ 7: 0] FSM_STATE_EXP_STOP = 8'hFF;
/*
@@ -209,7 +211,7 @@ module modexpa7_exponentiator # /* save number of words in a and b when new operation starts */
always @(posedge clk)
//
- if (fsm_next_state == FSM_STATE_EXP_INIT_1)
+ if ((fsm_state == FSM_STATE_EXP_IDLE) && ena_trig)
{m_num_words_latch, d_num_bits_latch} <= {m_num_words, d_num_bits};
@@ -231,6 +233,7 @@ module modexpa7_exponentiator # /* address registers */
reg [OPERAND_ADDR_WIDTH-1:0] m_addr;
reg [OPERAND_ADDR_WIDTH-1:0] d_addr;
+ reg [OPERAND_ADDR_WIDTH-1:0] f_addr;
reg [OPERAND_ADDR_WIDTH-1:0] r_addr;
reg [OPERAND_ADDR_WIDTH-1:0] t0_addr;
reg [OPERAND_ADDR_WIDTH-1:0] t1_addr;
@@ -248,6 +251,7 @@ module modexpa7_exponentiator # /* handy increment values */
wire [OPERAND_ADDR_WIDTH-1:0] m_addr_next = m_addr + 1'b1;
wire [OPERAND_ADDR_WIDTH-1:0] d_addr_next = d_addr + 1'b1;
+ wire [OPERAND_ADDR_WIDTH-1:0] f_addr_next = f_addr + 1'b1;
wire [OPERAND_ADDR_WIDTH-1:0] r_addr_next = r_addr + 1'b1;
wire [OPERAND_ADDR_WIDTH-1:0] t0_addr_next = t0_addr + 1'b1;
wire [OPERAND_ADDR_WIDTH-1:0] t1_addr_next = t1_addr + 1'b1;
@@ -259,6 +263,7 @@ module modexpa7_exponentiator # /* handy stop flags */
wire m_addr_done = (m_addr == bram_addr_last) ? 1'b1 : 1'b0;
wire d_addr_done = (d_addr == bram_addr_last) ? 1'b1 : 1'b0;
+ wire f_addr_done = (f_addr == bram_addr_last) ? 1'b1 : 1'b0;
wire r_addr_done = (r_addr == bram_addr_last) ? 1'b1 : 1'b0;
wire t0_addr_done = (t0_addr == bram_addr_last) ? 1'b1 : 1'b0;
wire t1_addr_done = (t1_addr == bram_addr_last) ? 1'b1 : 1'b0;
@@ -270,6 +275,7 @@ module modexpa7_exponentiator # /* map registers to top-level ports */
assign m_bram_addr = m_addr;
assign d_bram_addr = d_addr;
+ assign f_bram_addr = f_addr;
assign r_bram_addr = r_addr;
//
@@ -386,93 +392,115 @@ module modexpa7_exponentiator # // m_addr
//
case (fsm_next_state)
- FSM_STATE_EXP_INIT_1: m_addr <= bram_addr_zero;
- FSM_STATE_EXP_INIT_2,
- FSM_STATE_EXP_INIT_3,
- FSM_STATE_EXP_INIT_4: m_addr <= !m_addr_done ? m_addr_next : m_addr;
+ FSM_STATE_MUL_INIT_1: m_addr <= bram_addr_zero;
+ FSM_STATE_MUL_INIT_2,
+ FSM_STATE_MUL_INIT_3,
+ FSM_STATE_MUL_INIT_4: m_addr <= !m_addr_done ? m_addr_next : m_addr;
endcase
//
// d_addr
//
case (fsm_next_state)
- FSM_STATE_EXP_CALC_1: d_addr <= bit_cnt[OPERAND_ADDR_WIDTH+4:5];
+ FSM_STATE_EXP_CALC_1: d_addr <= bit_cnt[OPERAND_ADDR_WIDTH+4:5];
+ endcase
+ //
+ // f_addr
+ //
+ case (fsm_next_state)
+ FSM_STATE_MUL_INIT_1: f_addr <= bram_addr_zero;
+ FSM_STATE_MUL_INIT_2,
+ FSM_STATE_MUL_INIT_3,
+ FSM_STATE_MUL_INIT_4: f_addr <= !f_addr_done ? f_addr_next : f_addr;
endcase
//
// r_addr
//
case (fsm_next_state)
- FSM_STATE_EXP_SAVE_3: r_addr <= bram_addr_zero;
- FSM_STATE_EXP_SAVE_4: r_addr <= r_addr_next;
+ FSM_STATE_EXP_SAVE_3: r_addr <= bram_addr_zero;
+ FSM_STATE_EXP_SAVE_4: r_addr <= r_addr_next;
endcase
//
// p_addr_wr
//
case (fsm_next_state)
- FSM_STATE_EXP_INIT_3: p_addr_wr <= bram_addr_zero;
- FSM_STATE_EXP_INIT_4: p_addr_wr <= p_addr_wr_next;
//
- FSM_STATE_EXP_FILL_3: p_addr_wr <= bram_addr_zero;
- FSM_STATE_EXP_FILL_4: p_addr_wr <= p_addr_wr_next;
+ FSM_STATE_MUL_INIT_3: p_addr_wr <= bram_addr_zero;
+ FSM_STATE_MUL_INIT_4: p_addr_wr <= p_addr_wr_next;
+ //
+ FSM_STATE_EXP_INIT_3: p_addr_wr <= bram_addr_zero;
+ FSM_STATE_EXP_INIT_4: p_addr_wr <= p_addr_wr_next;
+ //
+ FSM_STATE_EXP_FILL_3: p_addr_wr <= bram_addr_zero;
+ FSM_STATE_EXP_FILL_4: p_addr_wr <= p_addr_wr_next;
endcase
//
// t0_addr
//
case (fsm_next_state)
- FSM_STATE_EXP_LOAD_3: t0_addr <= bram_addr_zero;
- FSM_STATE_EXP_LOAD_4: t0_addr <= t0_addr_next;
+ FSM_STATE_EXP_LOAD_3: t0_addr <= bram_addr_zero;
+ FSM_STATE_EXP_LOAD_4: t0_addr <= t0_addr_next;
//
- FSM_STATE_EXP_FILL_1: t0_addr <= bram_addr_zero;
+ FSM_STATE_EXP_FILL_1: t0_addr <= bram_addr_zero;
FSM_STATE_EXP_FILL_2,
FSM_STATE_EXP_FILL_3,
- FSM_STATE_EXP_FILL_4: t0_addr <= !t0_addr_done ? t0_addr_next : t0_addr;
+ FSM_STATE_EXP_FILL_4: t0_addr <= !t0_addr_done ? t0_addr_next : t0_addr;
endcase
//
// t1_addr
//
case (fsm_next_state)
- FSM_STATE_EXP_INIT_3: t1_addr <= bram_addr_zero;
- FSM_STATE_EXP_INIT_4: t1_addr <= t1_addr_next;
+ FSM_STATE_EXP_INIT_3: t1_addr <= bram_addr_zero;
+ FSM_STATE_EXP_INIT_4: t1_addr <= t1_addr_next;
//
- FSM_STATE_EXP_LOAD_1: t1_addr <= bram_addr_zero;
+ FSM_STATE_EXP_LOAD_1: t1_addr <= bram_addr_zero;
FSM_STATE_EXP_LOAD_2,
FSM_STATE_EXP_LOAD_3,
- FSM_STATE_EXP_LOAD_4: t1_addr <= !t1_addr_done ? t1_addr_next : t1_addr;
+ FSM_STATE_EXP_LOAD_4: t1_addr <= !t1_addr_done ? t1_addr_next : t1_addr;
//
- FSM_STATE_EXP_FILL_3: t1_addr <= bram_addr_zero;
- FSM_STATE_EXP_FILL_4: t1_addr <= t1_addr_next;
+ FSM_STATE_EXP_FILL_3: t1_addr <= bram_addr_zero;
+ FSM_STATE_EXP_FILL_4: t1_addr <= t1_addr_next;
//
- FSM_STATE_EXP_SAVE_1: t1_addr <= bram_addr_zero;
+ FSM_STATE_EXP_SAVE_1: t1_addr <= bram_addr_zero;
FSM_STATE_EXP_SAVE_2,
FSM_STATE_EXP_SAVE_3,
- FSM_STATE_EXP_SAVE_4: t1_addr <= !t1_addr_done ? t1_addr_next : t1_addr;
+ FSM_STATE_EXP_SAVE_4: t1_addr <= !t1_addr_done ? t1_addr_next : t1_addr;
endcase
//
// t2_addr_wr
//
case (fsm_next_state)
- FSM_STATE_EXP_INIT_3: t2_addr_wr <= bram_addr_zero;
- FSM_STATE_EXP_INIT_4: t2_addr_wr <= t2_addr_wr_next;
//
- FSM_STATE_EXP_FILL_3: t2_addr_wr <= bram_addr_zero;
- FSM_STATE_EXP_FILL_4: t2_addr_wr <= t2_addr_wr_next;
+ FSM_STATE_MUL_INIT_3: t2_addr_wr <= bram_addr_zero;
+ FSM_STATE_MUL_INIT_4: t2_addr_wr <= t2_addr_wr_next;
+
+ FSM_STATE_EXP_INIT_3: t2_addr_wr <= bram_addr_zero;
+ FSM_STATE_EXP_INIT_4: t2_addr_wr <= t2_addr_wr_next;
+ //
+ FSM_STATE_EXP_FILL_3: t2_addr_wr <= bram_addr_zero;
+ FSM_STATE_EXP_FILL_4: t2_addr_wr <= t2_addr_wr_next;
endcase
//
// pp_addr_rd
//
case (fsm_next_state)
- FSM_STATE_EXP_FILL_1: pp_addr_rd <= bram_addr_zero;
+ FSM_STATE_EXP_FILL_1: pp_addr_rd <= bram_addr_zero;
FSM_STATE_EXP_FILL_2,
FSM_STATE_EXP_FILL_3,
- FSM_STATE_EXP_FILL_4: pp_addr_rd <= !pp_addr_rd_done ? pp_addr_rd_next : pp_addr_rd;
+ FSM_STATE_EXP_FILL_4: pp_addr_rd <= !pp_addr_rd_done ? pp_addr_rd_next : pp_addr_rd;
endcase
//
// tp_addr_rd
//
case (fsm_next_state)
- FSM_STATE_EXP_FILL_1: tp_addr_rd <= bram_addr_zero;
+ FSM_STATE_EXP_INIT_1: tp_addr_rd <= bram_addr_zero;
+ FSM_STATE_EXP_INIT_2,
+ FSM_STATE_EXP_INIT_3,
+ FSM_STATE_EXP_INIT_4: tp_addr_rd <= !tp_addr_rd_done ? tp_addr_rd_next : tp_addr_rd;
+ //
+ FSM_STATE_EXP_FILL_1: tp_addr_rd <= bram_addr_zero;
FSM_STATE_EXP_FILL_2,
FSM_STATE_EXP_FILL_3,
- FSM_STATE_EXP_FILL_4: tp_addr_rd <= !tp_addr_rd_done ? tp_addr_rd_next : tp_addr_rd;
+ FSM_STATE_EXP_FILL_4: tp_addr_rd <= !tp_addr_rd_done ? tp_addr_rd_next : tp_addr_rd;
endcase
//
end
@@ -487,26 +515,28 @@ module modexpa7_exponentiator # //
case (fsm_next_state)
FSM_STATE_EXP_SAVE_3,
- FSM_STATE_EXP_SAVE_4: r_wren <= 1'b1;
- default: r_wren <= 1'b0;
+ FSM_STATE_EXP_SAVE_4: r_wren <= 1'b1;
+ default: r_wren <= 1'b0;
endcase
//
// p_wren
//
case (fsm_next_state)
- FSM_STATE_EXP_INIT_3,
+ FSM_STATE_MUL_INIT_3,
+ FSM_STATE_MUL_INIT_4,
+ FSM_STATE_EXP_INIT_3,
FSM_STATE_EXP_INIT_4,
FSM_STATE_EXP_FILL_3,
- FSM_STATE_EXP_FILL_4: p_wren <= 1'b1;
- default: p_wren <= 1'b0;
+ FSM_STATE_EXP_FILL_4: p_wren <= 1'b1;
+ default: p_wren <= 1'b0;
endcase
//
// t0_wren
//
case (fsm_next_state)
FSM_STATE_EXP_LOAD_3,
- FSM_STATE_EXP_LOAD_4: t0_wren <= 1'b1;
- default: t0_wren <= 1'b0;
+ FSM_STATE_EXP_LOAD_4: t0_wren <= 1'b1;
+ default: t0_wren <= 1'b0;
endcase
//
// t1_wren
@@ -515,18 +545,20 @@ module modexpa7_exponentiator # FSM_STATE_EXP_INIT_3,
FSM_STATE_EXP_INIT_4,
FSM_STATE_EXP_FILL_3,
- FSM_STATE_EXP_FILL_4: t1_wren <= 1'b1;
- default: t1_wren <= 1'b0;
+ FSM_STATE_EXP_FILL_4: t1_wren <= 1'b1;
+ default: t1_wren <= 1'b0;
endcase
//
// t2_wren
//
case (fsm_next_state)
+ FSM_STATE_MUL_INIT_3,
+ FSM_STATE_MUL_INIT_4,
FSM_STATE_EXP_INIT_3,
FSM_STATE_EXP_INIT_4,
FSM_STATE_EXP_FILL_3,
- FSM_STATE_EXP_FILL_4: t2_wren <= 1'b1;
- default: t2_wren <= 1'b0;
+ FSM_STATE_EXP_FILL_4: t2_wren <= 1'b1;
+ default: t2_wren <= 1'b0;
endcase
//
end
@@ -541,50 +573,58 @@ module modexpa7_exponentiator # //
case (fsm_next_state)
FSM_STATE_EXP_SAVE_3,
- FSM_STATE_EXP_SAVE_4: r_data_in <= t1_data_out;
- default: r_data_in <= 32'dX;
+ FSM_STATE_EXP_SAVE_4: r_data_in <= t1_data_out;
+ default: r_data_in <= 32'dX;
endcase
//
// p_data_in
//
case (fsm_next_state)
+ //
+ FSM_STATE_MUL_INIT_3,
+ FSM_STATE_MUL_INIT_4: p_data_in <= f_bram_out;
+ //
FSM_STATE_EXP_INIT_3,
- FSM_STATE_EXP_INIT_4: p_data_in <= m_bram_out;
+ FSM_STATE_EXP_INIT_4: p_data_in <= tp_data_out;
//
FSM_STATE_EXP_FILL_3,
- FSM_STATE_EXP_FILL_4: p_data_in <= pp_data_out;
+ FSM_STATE_EXP_FILL_4: p_data_in <= pp_data_out;
//
- default: p_data_in <= 32'dX;
+ default: p_data_in <= 32'dX;
endcase
//
// t0_data_in
//
case (fsm_next_state)
FSM_STATE_EXP_LOAD_3,
- FSM_STATE_EXP_LOAD_4: t0_data_in <= t1_data_out;
- default: t0_data_in <= 32'dX;
+ FSM_STATE_EXP_LOAD_4: t0_data_in <= t1_data_out;
+ default: t0_data_in <= 32'dX;
endcase
//
// t1_data_in
//
case (fsm_next_state)
- FSM_STATE_EXP_INIT_3: t1_data_in <= 32'd1;
- FSM_STATE_EXP_INIT_4: t1_data_in <= 32'd0;
+ FSM_STATE_EXP_INIT_3: t1_data_in <= 32'd1;
+ FSM_STATE_EXP_INIT_4: t1_data_in <= 32'd0;
//
FSM_STATE_EXP_FILL_3,
- FSM_STATE_EXP_FILL_4: t1_data_in <= flag_update_r ? tp_data_out : t0_data_out;
- default: t1_data_in <= 32'dX;
+ FSM_STATE_EXP_FILL_4: t1_data_in <= flag_update_r ? tp_data_out : t0_data_out;
+ default: t1_data_in <= 32'dX;
endcase
//
// t2_data_in
//
case (fsm_next_state)
- FSM_STATE_EXP_INIT_3: t2_data_in <= 32'd1;
- FSM_STATE_EXP_INIT_4: t2_data_in <= 32'd0;
+ //
+ FSM_STATE_MUL_INIT_3,
+ FSM_STATE_MUL_INIT_4: t2_data_in <= m_bram_out;
+ //
+ FSM_STATE_EXP_INIT_3: t2_data_in <= 32'd1;
+ FSM_STATE_EXP_INIT_4: t2_data_in <= 32'd0;
//
FSM_STATE_EXP_FILL_3,
- FSM_STATE_EXP_FILL_4: t2_data_in <= flag_update_r ? tp_data_out : t0_data_out;
- default: t2_data_in <= 32'dX;
+ FSM_STATE_EXP_FILL_4: t2_data_in <= flag_update_r ? tp_data_out : t0_data_out;
+ default: t2_data_in <= 32'dX;
endcase
//
end
@@ -661,11 +701,12 @@ module modexpa7_exponentiator # always @(posedge clk)
//
- mul_ena <= (fsm_next_state == FSM_STATE_EXP_CALC_1) ? 1'b1 : 1'b0;
-
-
-
-
+ case (fsm_next_state)
+ FSM_STATE_MUL_CALC_1,
+ FSM_STATE_EXP_CALC_1: mul_ena <= 1'b1;
+ default: mul_ena <= 1'b0;
+ endcase
+
//
// FSM Process
@@ -685,42 +726,53 @@ module modexpa7_exponentiator # //
case (fsm_state)
//
- FSM_STATE_EXP_IDLE: if (ena_trig) fsm_next_state = FSM_STATE_EXP_INIT_1;
- else fsm_next_state = FSM_STATE_EXP_IDLE;
+ FSM_STATE_MUL_INIT_1: fsm_next_state = FSM_STATE_MUL_INIT_2;
+ FSM_STATE_MUL_INIT_2: fsm_next_state = FSM_STATE_MUL_INIT_3;
+ FSM_STATE_MUL_INIT_3: fsm_next_state = FSM_STATE_MUL_INIT_4;
+ FSM_STATE_MUL_INIT_4: if (t2_addr_wr_done) fsm_next_state = FSM_STATE_MUL_CALC_1;
+ else fsm_next_state = FSM_STATE_MUL_INIT_4;
+ //
+ FSM_STATE_MUL_CALC_1: fsm_next_state = FSM_STATE_MUL_CALC_2;
+ FSM_STATE_MUL_CALC_2: if (mul_rdy_tp) fsm_next_state = FSM_STATE_MUL_CALC_3;
+ else fsm_next_state = FSM_STATE_MUL_CALC_2;
+ FSM_STATE_MUL_CALC_3: fsm_next_state = FSM_STATE_EXP_INIT_1;
+ //
+ FSM_STATE_EXP_IDLE: if (ena_trig) fsm_next_state = FSM_STATE_MUL_INIT_1;
+ else fsm_next_state = FSM_STATE_EXP_IDLE;
//
FSM_STATE_EXP_INIT_1: fsm_next_state = FSM_STATE_EXP_INIT_2;
FSM_STATE_EXP_INIT_2: fsm_next_state = FSM_STATE_EXP_INIT_3;
FSM_STATE_EXP_INIT_3: fsm_next_state = FSM_STATE_EXP_INIT_4;
- FSM_STATE_EXP_INIT_4: if (t1_addr_done) fsm_next_state = FSM_STATE_EXP_LOAD_1;
- else fsm_next_state = FSM_STATE_EXP_INIT_4;
+ FSM_STATE_EXP_INIT_4: if (t1_addr_done) fsm_next_state = FSM_STATE_EXP_LOAD_1;
+ else fsm_next_state = FSM_STATE_EXP_INIT_4;
//
FSM_STATE_EXP_LOAD_1: fsm_next_state = FSM_STATE_EXP_LOAD_2;
FSM_STATE_EXP_LOAD_2: fsm_next_state = FSM_STATE_EXP_LOAD_3;
FSM_STATE_EXP_LOAD_3: fsm_next_state = FSM_STATE_EXP_LOAD_4;
- FSM_STATE_EXP_LOAD_4: if (t0_addr_done) fsm_next_state = FSM_STATE_EXP_CALC_1;
- else fsm_next_state = FSM_STATE_EXP_LOAD_4;
+ FSM_STATE_EXP_LOAD_4: if (t0_addr_done) fsm_next_state = FSM_STATE_EXP_CALC_1;
+ else fsm_next_state = FSM_STATE_EXP_LOAD_4;
//
FSM_STATE_EXP_CALC_1: fsm_next_state = FSM_STATE_EXP_CALC_2;
- FSM_STATE_EXP_CALC_2: if (mul_rdy_all) fsm_next_state = FSM_STATE_EXP_CALC_3;
- else fsm_next_state = FSM_STATE_EXP_CALC_2;
+ FSM_STATE_EXP_CALC_2: if (mul_rdy_all) fsm_next_state = FSM_STATE_EXP_CALC_3;
+ else fsm_next_state = FSM_STATE_EXP_CALC_2;
FSM_STATE_EXP_CALC_3: fsm_next_state = FSM_STATE_EXP_FILL_1;
//
FSM_STATE_EXP_FILL_1: fsm_next_state = FSM_STATE_EXP_FILL_2;
FSM_STATE_EXP_FILL_2: fsm_next_state = FSM_STATE_EXP_FILL_3;
FSM_STATE_EXP_FILL_3: fsm_next_state = FSM_STATE_EXP_FILL_4;
- FSM_STATE_EXP_FILL_4: if (p_addr_wr_done) fsm_next_state = FSM_STATE_EXP_NEXT;
- else fsm_next_state = FSM_STATE_EXP_FILL_4;
+ FSM_STATE_EXP_FILL_4: if (p_addr_wr_done) fsm_next_state = FSM_STATE_EXP_NEXT;
+ else fsm_next_state = FSM_STATE_EXP_FILL_4;
//
- FSM_STATE_EXP_NEXT: if (bit_cnt_done) fsm_next_state = FSM_STATE_EXP_SAVE_1;
- else fsm_next_state = FSM_STATE_EXP_LOAD_1;
+ FSM_STATE_EXP_NEXT: if (bit_cnt_done) fsm_next_state = FSM_STATE_EXP_SAVE_1;
+ else fsm_next_state = FSM_STATE_EXP_LOAD_1;
//
FSM_STATE_EXP_SAVE_1: fsm_next_state = FSM_STATE_EXP_SAVE_2;
FSM_STATE_EXP_SAVE_2: fsm_next_state = FSM_STATE_EXP_SAVE_3;
FSM_STATE_EXP_SAVE_3: fsm_next_state = FSM_STATE_EXP_SAVE_4;
- FSM_STATE_EXP_SAVE_4: if (r_addr_done) fsm_next_state = FSM_STATE_EXP_STOP;
- else fsm_next_state = FSM_STATE_EXP_SAVE_4;
+ FSM_STATE_EXP_SAVE_4: if (r_addr_done) fsm_next_state = FSM_STATE_EXP_STOP;
+ else fsm_next_state = FSM_STATE_EXP_SAVE_4;
//
- FSM_STATE_EXP_STOP: fsm_next_state = FSM_STATE_EXP_IDLE;
+ FSM_STATE_EXP_STOP: fsm_next_state = FSM_STATE_EXP_IDLE;
//
endcase
//
|