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Subversion Repositories openrisc_2011-10-31

[/] [openrisc/] [trunk/] [or1200/] [rtl/] [verilog/] [or1200_if.v] - Diff between revs 258 and 358

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Rev 258	Rev 358
Line 116...	Line 116...
`//`	`//`
`// IF bypass`	`// IF bypass`
`//`	`//`
`assign if_bypass = icpu_adr_i[0] ? 1'b0 : if_bypass_reg \| if_flushpipe;`	`assign if_bypass = icpu_adr_i[0] ? 1'b0 : if_bypass_reg \| if_flushpipe;`

`always @(posedge clk or posedge rst)`	always @(posedge clk or `OR1200_RST_EVENT rst)
`if (rst)`	if (rst == `OR1200_RST_VALUE)
`if_bypass_reg <= 1'b0;`	`if_bypass_reg <= 1'b0;`
`else`	`else`
`if_bypass_reg <= if_bypass;`	`if_bypass_reg <= if_bypass;`

`//`	`//`
Line 136...	Line 136...
assign except_ibuserr = no_more_dslot ? 1'b0 : saved ? err_saved[2] : icpu_err_i & (icpu_tag_i == `OR1200_ITAG_BE);	assign except_ibuserr = no_more_dslot ? 1'b0 : saved ? err_saved[2] : icpu_err_i & (icpu_tag_i == `OR1200_ITAG_BE);

`//`	`//`
`// Flag for saved insn/address`	`// Flag for saved insn/address`
`//`	`//`
`always @(posedge clk or posedge rst)`	always @(posedge clk or `OR1200_RST_EVENT rst)
`if (rst)`	if (rst == `OR1200_RST_VALUE)
`saved <= 1'b0;`	`saved <= 1'b0;`
`else if (if_flushpipe)`	`else if (if_flushpipe)`
`saved <= 1'b0;`	`saved <= 1'b0;`
`else if (save_insn)`	`else if (save_insn)`
`saved <= 1'b1;`	`saved <= 1'b1;`
Line 149...	Line 149...
`saved <= 1'b0;`	`saved <= 1'b0;`

`//`	`//`
`// Store fetched instruction`	`// Store fetched instruction`
`//`	`//`
`always @(posedge clk or posedge rst)`	always @(posedge clk or `OR1200_RST_EVENT rst)
`if (rst)`	if (rst == `OR1200_RST_VALUE)
insn_saved <= {`OR1200_OR32_NOP, 26'h041_0000};	insn_saved <= {`OR1200_OR32_NOP, 26'h041_0000};
`else if (if_flushpipe)`	`else if (if_flushpipe)`
insn_saved <= {`OR1200_OR32_NOP, 26'h041_0000};	insn_saved <= {`OR1200_OR32_NOP, 26'h041_0000};
`else if (save_insn)`	`else if (save_insn)`
insn_saved <= icpu_err_i ? {`OR1200_OR32_NOP, 26'h041_0000} : icpu_dat_i;	insn_saved <= icpu_err_i ? {`OR1200_OR32_NOP, 26'h041_0000} : icpu_dat_i;
Line 162...	Line 162...
insn_saved <= {`OR1200_OR32_NOP, 26'h041_0000};	insn_saved <= {`OR1200_OR32_NOP, 26'h041_0000};

`//`	`//`
`// Store fetched instruction's address`	`// Store fetched instruction's address`
`//`	`//`
`always @(posedge clk or posedge rst)`	always @(posedge clk or `OR1200_RST_EVENT rst)
`if (rst)`	if (rst == `OR1200_RST_VALUE)
`addr_saved <= 32'h00000000;`	`addr_saved <= 32'h00000000;`
`else if (if_flushpipe)`	`else if (if_flushpipe)`
`addr_saved <= 32'h00000000;`	`addr_saved <= 32'h00000000;`
`else if (save_insn)`	`else if (save_insn)`
`addr_saved <= {icpu_adr_i[31:2], 2'b00};`	`addr_saved <= {icpu_adr_i[31:2], 2'b00};`
Line 175...	Line 175...
`addr_saved <= {icpu_adr_i[31:2], 2'b00};`	`addr_saved <= {icpu_adr_i[31:2], 2'b00};`

`//`	`//`
`// Store fetched instruction's error tags`	`// Store fetched instruction's error tags`
`//`	`//`
`always @(posedge clk or posedge rst)`	always @(posedge clk or `OR1200_RST_EVENT rst)
`if (rst)`	if (rst == `OR1200_RST_VALUE)
`err_saved <= 3'b000;`	`err_saved <= 3'b000;`
`else if (if_flushpipe)`	`else if (if_flushpipe)`
`err_saved <= 3'b000;`	`err_saved <= 3'b000;`
`else if (save_insn) begin`	`else if (save_insn) begin`
err_saved[0] <= icpu_err_i & (icpu_tag_i == `OR1200_ITAG_TE);	err_saved[0] <= icpu_err_i & (icpu_tag_i == `OR1200_ITAG_TE);

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[/] [openrisc/] [trunk/] [or1200/] [rtl/] [verilog/] [or1200_if.v] - Diff between revs 258 and 358