URL https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk

Subversion Repositories openrisc_2011-10-31

[/] [openrisc/] [trunk/] [or1200/] [rtl/] [verilog/] [or1200_sb.v] - Diff between revs 258 and 358

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Rev 258	Rev 358
Line 147...	Line 147...
`assign sel_sb = sb_en_reg & (~fifo_empty \| (fifo_empty & outstanding_store));`	`assign sel_sb = sb_en_reg & (~fifo_empty \| (fifo_empty & outstanding_store));`

`//`	`//`
`// SB enable`	`// SB enable`
`//`	`//`
`always @(posedge clk or posedge rst)`	always @(posedge clk or `OR1200_RST_EVENT rst)
`if (rst)`	if (rst == `OR1200_RST_VALUE)
`sb_en_reg <= 1'b0;`	`sb_en_reg <= 1'b0;`
`else if (sb_en & ~dcsb_cyc_i)`	`else if (sb_en & ~dcsb_cyc_i)`
`sb_en_reg <= 1'b1; // enable SB when there is no dcsb transfer in progress`	`sb_en_reg <= 1'b1; // enable SB when there is no dcsb transfer in progress`
`else if (~sb_en & (~fifo_empty \| (fifo_empty & outstanding_store)))`	`else if (~sb_en & (~fifo_empty \| (fifo_empty & outstanding_store)))`
`sb_en_reg <= 1'b0; // disable SB when there is no pending transfers from SB`	`sb_en_reg <= 1'b0; // disable SB when there is no pending transfers from SB`
Line 172...	Line 172...
`);`	`);`

`//`	`//`
`// fifo_rd`	`// fifo_rd`
`//`	`//`
`always @(posedge clk or posedge rst)`	always @(posedge clk or `OR1200_RST_EVENT rst)
`if (rst)`	if (rst == `OR1200_RST_VALUE)
`outstanding_store <= 1'b0;`	`outstanding_store <= 1'b0;`
`else if (sbbiu_ack_i)`	`else if (sbbiu_ack_i)`
`outstanding_store <= 1'b0;`	`outstanding_store <= 1'b0;`
`else if (sel_sb \| fifo_wr)`	`else if (sel_sb \| fifo_wr)`
`outstanding_store <= 1'b1;`	`outstanding_store <= 1'b1;`

`//`	`//`
`// fifo_wr_ack`	`// fifo_wr_ack`
`//`	`//`
`always @(posedge clk or posedge rst)`	always @(posedge clk or `OR1200_RST_EVENT rst)
`if (rst)`	if (rst == `OR1200_RST_VALUE)
`fifo_wr_ack <= 1'b0;`	`fifo_wr_ack <= 1'b0;`
`else if (fifo_wr)`	`else if (fifo_wr)`
`fifo_wr_ack <= 1'b1;`	`fifo_wr_ack <= 1'b1;`
`else`	`else`
`fifo_wr_ack <= 1'b0;`	`fifo_wr_ack <= 1'b0;`

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[/] [openrisc/] [trunk/] [or1200/] [rtl/] [verilog/] [or1200_sb.v] - Diff between revs 258 and 358