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Bugfix in memory interface (related to compressed ISA)

This commit is contained in:
Clifford Wolf 2016-04-10 13:25:05 +02:00
parent 9a5d35c195
commit fce9656604
1 changed files with 3 additions and 3 deletions
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6
picorv32.v
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@ -188,11 +188,11 @@ module picorv32 #(
reg [15:0] mem_16bit_buffer;
wire mem_busy = |{mem_do_prefetch, mem_do_rinst, mem_do_rdata, mem_do_wdata};
wire mem_done = resetn && ((mem_ready && |mem_state && (mem_do_rinst || mem_do_rdata || mem_do_wdata)) || (&mem_state && mem_do_rinst)) && !mem_la_firstword;
wire mem_done = resetn && ((mem_valid && mem_ready && |mem_state && (mem_do_rinst || mem_do_rdata || mem_do_wdata)) || (&mem_state && mem_do_rinst)) && !mem_la_firstword;
assign mem_la_write = resetn && !mem_state && mem_do_wdata;
assign mem_la_read = resetn && ((!mem_state && (mem_do_rinst || mem_do_prefetch || mem_do_rdata)) || (mem_ready && mem_la_firstword && !mem_la_secondword));
assign mem_la_addr = (mem_do_prefetch || mem_do_rinst) ? {next_pc[31:2] + (mem_ready && mem_la_firstword), 2'b00} : {reg_op1[31:2], 2'b00};
assign mem_la_read = resetn && ((!mem_state && (mem_do_rinst || mem_do_prefetch || mem_do_rdata)) || (mem_valid && mem_ready && mem_la_firstword && !mem_la_secondword));
assign mem_la_addr = (mem_do_prefetch || mem_do_rinst) ? {next_pc[31:2] + (mem_valid && mem_ready && mem_la_firstword), 2'b00} : {reg_op1[31:2], 2'b00};
wire [31:0] mem_rdata_latched_noshuffle;
assign mem_rdata_latched_noshuffle = ((mem_valid && mem_ready) || LATCHED_MEM_RDATA) ? mem_rdata : mem_rdata_q;