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[/] [neorv32/] [trunk/] [rtl/] [core/] [neorv32_cpu_regfile.vhd] - Diff between revs 49 and 58
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| Rev 49 |
Rev 58 |
| Line 119... |
Line 119... |
not or_all_f(ctrl_i(ctrl_rf_rd_adr3_c downto ctrl_rf_rd_adr0_c));
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not or_all_f(ctrl_i(ctrl_rf_rd_adr3_c downto ctrl_rf_rd_adr0_c));
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-- valid RF write access? --
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-- valid RF write access? --
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rf_we <= (ctrl_i(ctrl_rf_wb_en_c) and (not rd_is_r0)) or ctrl_i(ctrl_rf_r0_we_c);
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rf_we <= (ctrl_i(ctrl_rf_wb_en_c) and (not rd_is_r0)) or ctrl_i(ctrl_rf_r0_we_c);
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-- destination address --
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dst_addr <= ctrl_i(ctrl_rf_rd_adr4_c downto ctrl_rf_rd_adr0_c) when (ctrl_i(ctrl_rf_r0_we_c) = '0') else (others => '0'); -- force dst=r0?
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-- access addresses --
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-- access addresses --
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dst_addr <= ctrl_i(ctrl_rf_rd_adr4_c downto ctrl_rf_rd_adr0_c) when (ctrl_i(ctrl_rf_r0_we_c) = '0') else (others => '0'); -- force dst=r0?
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opa_addr <= dst_addr when (rf_we = '1') else ctrl_i(ctrl_rf_rs1_adr4_c downto ctrl_rf_rs1_adr0_c); -- rd/rs1
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opa_addr <= dst_addr when (rf_we = '1') else ctrl_i(ctrl_rf_rs1_adr4_c downto ctrl_rf_rs1_adr0_c); -- rd/rs1
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opb_addr <= ctrl_i(ctrl_rf_rs2_adr4_c downto ctrl_rf_rs2_adr0_c); -- rs2
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opb_addr <= ctrl_i(ctrl_rf_rs2_adr4_c downto ctrl_rf_rs2_adr0_c); -- rs2
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-- data output --
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-- data output --
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rs1_o <= rs1;
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rs1_o <= rs1;
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