URL
https://opencores.org/ocsvn/axi_vga_fb/axi_vga_fb/trunk
Subversion Repositories axi_vga_fb
Compare Revisions
- This comparison shows the changes necessary to convert path
/axi_vga_fb
- from Rev 2 to Rev 3
- ↔ Reverse comparison
Rev 2 → Rev 3
/trunk/vga.v
74,17 → 74,30
end |
else |
begin |
if ( ((s00_AXI_AWVALID == 1) && (s00_AXI_AWREADY ==0)) ) begin s00_AXI_AWREADY <=1; wadd <= s00_AXI_AWADDR[16:2]; end else |
if ( ((s00_AXI_AWVALID == 1) && (s00_AXI_AWREADY ==0)) ) begin s00_AXI_AWREADY <=1; wadd <= s00_AXI_AWADDR[16:2]; end |
|
if ( ((s00_AXI_ARVALID == 1) && (s00_AXI_ARREADY ==0)) ) begin rd_rq <= 1; s00_AXI_ARREADY <=1; radd <= s00_AXI_ARADDR[16:2]; end else |
begin |
s00_AXI_ARREADY <=0; |
s00_AXI_AWREADY <=0; |
if (rd_gnt ==1) |
begin |
rd_rq <=0; |
|
s00_AXI_RVALID <= 1; |
s00_AXI_RLAST <= 1; |
end |
else |
begin |
s00_AXI_RVALID <= 0; |
s00_AXI_RLAST <= 1; |
end |
end |
|
if ( wr_gnt == 1) begin s00_AXI_WREADY <=1; wr_rq <=0; wr_strb <= 0; end else |
if ((s00_AXI_WVALID == 1) && (s00_AXI_WREADY ==0)) begin wr_rq <= 1; wr_strb <= s00_AXI_WSTRB; wdat <= s00_AXI_WDATA; end else |
s00_AXI_WREADY <=0; |
if (rd_gnt ==1) begin s00_AXI_RDATA <= {Qreg1,Qreg2,Qreg3,Qreg4}; s00_AXI_RVALID <=1; end else s00_AXI_RVALID <=0; |
|
|
end |
|
96,11 → 109,12
always @(posedge s00_AXI_CLK) |
if (~s00_AXI_RSTN) |
begin |
gadd <=0; |
fifo <=0; |
gadd <= 0; |
fifo <= 0; |
rd_gnt <= 0; |
wr_gnt <= 0; |
vadd <=0; |
vadd <= 0; |
s00_AXI_RDATA <=0; |
end |
else |
begin |
107,9 → 121,9
if ((gclk == 0) && (wr_rq ==1)) begin wr_gnt <= 1; vadd <= wadd; {wreq1,wreq2,wreq3,wreq4} <= wr_strb; end else |
if ((gclk == 0) && (rd_rq ==1)) begin vadd <= radd; end else |
if ((gclk == 1) && (wr_rq ==1)) begin {wreq1,wreq2,wreq3,wreq4} <= 0; vadd <= gadd; end else |
if ((gclk == 1) && (rd_rq ==1)) begin rd_gnt <= 1; vadd <= gadd; end else |
if ((gclk == 1) && (rd_rq ==1)) begin rd_gnt <= 1; vadd <= gadd; end else |
if (gclk == 1) begin vadd <= gadd; end else |
if (gclk == 2) begin wr_gnt <=0; rd_gnt <=0; end |
if (gclk == 2) begin wr_gnt <=0; rd_gnt <=0; s00_AXI_RDATA <= {Qreg1,Qreg2,Qreg3,Qreg4}; end |
|
// update video address |
if ((counY < 10'd400) && (nextcounX <10'd640)) gadd <=nextcounX[9:2]+{counY[9:1],7'b0}+{counY[9:1],5'b0}; |