From 4a5df9c74e410e167fd5f77e165ee2ca073a32c9 Mon Sep 17 00:00:00 2001
From: "(Tim) Efthimis Kritikos" <efkf@firemail.cc>
Date: Sun, 5 Nov 2023 16:23:05 +0000
Subject: [PATCH] Fixed another driver conflict

---
 system/biu.v | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

diff --git a/system/biu.v b/system/biu.v
index b397542..71b1267 100644
--- a/system/biu.v
+++ b/system/biu.v
@@ -89,8 +89,6 @@ wire [`L1_CACHE_SIZE-1:0] FIFO_SIZE = FIFO_end-FIFO_start;
 reg [3:0] biu_state;
 reg sane;
 
-reg jump_req_latch;
-
 reg func;
 reg [19:0]INSTRUCTION_ADDRESS;
 reg [19:0]DATA_ADDRESS;
@@ -107,11 +105,13 @@ always @(posedge clock) begin
 		FIFO_start = `L1_CACHE_SIZE'b0;
 		FIFO_end = `L1_CACHE_SIZE'b0;
 		/* verilator lint_on BLKSEQ */
-	end else if ( jump_req_latch ) begin
+	end else if ( jump_req ) begin
+		/* verilator lint_off BLKSEQ */
+		FIFO_start = FIFO_end ;
+		/* verilator lint_on BLKSEQ */
 		INSTRUCTION_ADDRESS <= { 4'b0 , ADDRESS_INPUT };
 		INSTRUCTION_LOCATION <= ADDRESS_INPUT;
 		func <= 1;
-		jump_req_latch <= 0;
 		if (biu_state==`BIU_READ)
 			biu_state <= `BIU_NEXT_ACTION;
 	end else begin
@@ -321,7 +321,9 @@ always @( valid_instruction_ack ) begin
 end
 
 always @( FIFO_start or FIFO_end ) begin
-	if(sane==1) begin
+	if(jump_req==1)begin
+		VALID_INSTRUCTION <= 0;
+	end else if(sane==1) begin
 		//if(VALID_INSTRUCTION == 1 ) begin
 		//	`ifdef DOUBLE_INSTRUCTION_LOAD
 		//		if(FIFO_SIZE>`L1_CACHE_SIZE'd3+{{`L1_CACHE_SIZE-3{1'b0}},Isize})begin
@@ -394,11 +396,4 @@ always @( FIFO_start or FIFO_end ) begin
 	end
 end
 
-always @( posedge jump_req ) begin
-	/* verilator lint_off BLKSEQ */
-	FIFO_start = FIFO_end ;
-	/* verilator lint_on BLKSEQ */
-	jump_req_latch <= 1;
-end
-
 endmodule