feat: update project tt_um_toivoh_retro_console from toivoh/ttihp-tt0…

…6-retro-console

Commit: 1759e0a31f8cf3c269ab51e4129ec76beb1a6bad
Workflow: https://github.com/toivoh/ttihp-tt06-retro-console/actions/runs/11643642194

projects/tt_um_toivoh_retro_console/commit_id.json

@@ -1,7 +1,7 @@
 {
   "app": "Tiny Tapeout tt09 b176ed7c",
   "repo": "https://github.com/toivoh/ttihp-tt06-retro-console",
-  "commit": "cbf5ddaceaf0bb9c97f026c13ef1cccc29e88985",
-  "workflow_url": "https://github.com/toivoh/ttihp-tt06-retro-console/actions/runs/11642122326",
+  "commit": "1759e0a31f8cf3c269ab51e4129ec76beb1a6bad",
+  "workflow_url": "https://github.com/toivoh/ttihp-tt06-retro-console/actions/runs/11643642194",
   "sort_id": 1730546769885
 }

projects/tt_um_toivoh_retro_console/docs/info.md

@@ -533,17 +533,18 @@ The `copper_ctrl` PPU registers have specific effects on the Copper:
 Writing a value to `cmp_x` or `cmp_y` causes the Copper to delay the next write until the current raster x/y
 position is >= the specified compare value.
 
-The raster position for x intially goes from `24 + r_x0_fp` to `32 + r_xe_hsync` as the raster scan goes through the front porch and horizontal sync (counted as the first part of the scan line).
-Due to a bug, during the back porch and active regions, it is then calculated as 
+For each scan line, the raster position for x goes through the following phases in order
 
-	x_raster = {x[X_BITS-1:7], x[6:5] - 2'd3, x[4:0]}
+	Phase             x raster positions
+	front porch       24 + r_x0_fp  to  31
+	horizontal sync   32            to  32 + r_xe_hsync
+	back porch        96 + r_x0_bp  to  127
+	active            128           to  xe_active
 
-where `x` goes from `96 + r_x0_bp` to `xe_active`.
-This makes `x_raster` non-monotonic, making it harder to wait for some x positions.
-A partial workaround for waiting for an `x_raster` value that is lower than a previous value in the scan line is to start with a write to `cmp_x` of the highest value expected before reaching the given position, followed directly with a write to `cmp_x` of the actual value.
+yielding increasing raster positions for x.
 
 The raster position for y counts as zero until the active region starts in the y direction.
-Then, the compare value is `512 + y - 2*screen_height` where `y` is the number of scan lines since the start of the active region in the y direction.
+Then, the compare value is `512 - 2*screen_height + y` where `y` is the number of scan lines since the start of the active region in the y direction.
 
 #### Jumps
 Usually, the Copper loads instructions from consecutive addresses.

projects/tt_um_toivoh_retro_console/tt_um_toivoh_retro_console.spef

@@ -1,6 +1,6 @@
 *SPEF "ieee 1481-1999"
 *DESIGN "tt_um_toivoh_retro_console"
-*DATE "11:14:37 Saturday November 02, 2024"
+*DATE "15:21:09 Saturday November 02, 2024"
 *VENDOR "The OpenROAD Project"
 *PROGRAM "OpenROAD"
 *VERSION "v2.0-16649-g40811f37f"