add crude software implementation of Dvi ship

[fleet.git] / ships / Dvi.ship

diff --git a/ships/Dvi.ship b/ships/Dvi.ship
index 81b9afb..ee02bc4 100644 (file)
--- a/ships/Dvi.ship
+++ b/ships/Dvi.ship
@@ -323,10 +323,11 @@ vga_timing_generator
   assign sram_cs_b       = 0;
   assign sram_oe_b       = ~oe;
 
-  // Framebuffer is 548x478 -- yeah, I know that's completely weird.
+  // Framebuffer is 544x478 -- yeah, I know that's completely weird.
 
-  wire on_screen;
-  assign on_screen = (x_coord >= 48) && (x_coord < 592);
+  wire on_screen_;
+  reg on_screen;
+  assign on_screen_ = (x_coord >= 48) && (x_coord < 592);
   wire [9:0] adjusted_x_coord;
   assign adjusted_x_coord = x_coord - 48;
 
@@ -343,6 +344,7 @@ vga_timing_generator
 
   always @(posedge pix_clk) begin
       vga_pixel_addr <= vga_pixel_addr_;
+      on_screen      <= on_screen_;
   end
 
   wire idle;
@@ -550,13 +552,42 @@ NET  sram_oe_b            LOC="B12";   # Bank 20, Vcco=3.3V, DCI using 49.9 ohm
 
 == Fleeterpreter ====================================================
 
-  public void service() { }
+  private java.awt.Frame frame = null;
+  public void service() {
+  if (box_inPixelX.dataReadyForShip() &&
+      box_inPixelY.dataReadyForShip() &&
+      box_inPixelValue.dataReadyForShip()
+      ) {
+      long x      = box_inPixelX.removeDataForShip();
+      long y      = box_inPixelY.removeDataForShip();
+      long d      = box_inPixelValue.removeDataForShip();
+
+      if (frame==null) {
+           frame = new java.awt.Frame();
+           java.awt.Dimension dim = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
+           frame.setSize((int)dim.getWidth(),(int)dim.getHeight());
+           frame.show();
+           frame.setBackground(new java.awt.Color(0,0,0));
+      }
+      java.awt.Color c = new java.awt.Color(
+         ((d & (1L<<2))!=0) ? 0xff : 0x00,
+         ((d & (1L<<1))!=0) ? 0xff : 0x00,
+         ((d & (1L<<0))!=0) ? 0xff : 0x00
+      );
+      java.awt.Graphics2D g = (java.awt.Graphics2D)frame.getGraphics();
+      g.transform(java.awt.geom.AffineTransform.getScaleInstance(((double)frame.getWidth())/640, ((double)frame.getHeight())/480));
+      g.setColor(c);
+      g.fillRect((int)x,(int)y,1,1);
+
+    }
+  }
 
 == FleetSim ==============================================================
 
 == Constants =========================================================
 
 == Test ==============================================================
+#skip
 
 #expect 0
 #expect 0