feat: update project tt_um_a1k0n_demo from a1k0n/tt08-vgademo

Commit: 8c4b1024dfbddbdb35ce60422f74f7e70659235a
Workflow: https://github.com/a1k0n/tt08-vgademo/actions/runs/10606118168

projects/tt_um_a1k0n_demo/commit_id.json

@@ -1,8 +1,8 @@
 {
-  "app": "Tiny Tapeout tt08 3c88e6eb",
+  "app": "Tiny Tapeout tt08 86beb5d8",
   "repo": "https://github.com/a1k0n/tt08-vgademo",
-  "commit": "e8db65ca9026ffa5b3cd4c1908b6b84ba51d1f45",
-  "workflow_url": "https://github.com/a1k0n/tt08-vgademo/actions/runs/10275421976",
+  "commit": "8c4b1024dfbddbdb35ce60422f74f7e70659235a",
+  "workflow_url": "https://github.com/a1k0n/tt08-vgademo/actions/runs/10606118168",
   "sort_id": 1722976113433,
   "openlane_version": "OpenLane2 2.0.8",
   "pdk_version": "open_pdks bdc9412b3e468c102d01b7cf6337be06ec6e9c9a"

projects/tt_um_a1k0n_demo/docs/info.md

@@ -11,21 +11,34 @@ You can also include images in this folder and reference them in the markdown. E
 
 ## How it works
 
-It's a standalone demo that fits in two tiles; you'll just have to see.
+It's a standalone VGA+sound demo that fits in two tiles; you'll just have to
+see.
 
-This was developed on a FPGA with a 48MHz clock (and I couldn't figure out how
-to get the PLL to generate 25.175MHz), so it's in a funky VGA video mode --
-it's standard 640x480@60Hz VGA, but with 1220 horizontal pixels instead of 640.
+This was developed with a 48MHz clock, so it's in a funky VGA video mode -- it's
+standard 640x480@60Hz VGA timing, but with 1220 horizontal pixels instead of
+640.  All graphics are dithered down to RGB222 with a Bayer matrix which
+alternates each frame. Because of the dithering and the weird resolution, it
+looks best on a real CRT, but any VGA monitor ought to work.
 
-I will add more info here after the deadline passes.
+Sound is generated using a 16-bit sigma-delta DAC on io7 from an internal
+3-channel synth (triangle, noise, and square waves).
 
-## How to test
+I will add more info here after the deadline passes, as the demo is in flux as I
+try to fit effects into 2 tiles...
 
-Run at 48MHz (or, for more accurate VGA timings if your monitor complains, at 47.989844MHz).
+## How to test
 
-Input in[7] will pause the demo when high; leave it at 0 for normal operation.
+Run clock at 48MHz, connect VGA and sound Pmods, and give it a reset pulse.
 
 ## External hardware
 
-Uses the [TinyVGA PMOD](https://github.com/mole99/tiny-vga) for output. Plug
-into a VGA monitor and power it up.
+Follows the [democompo hardware rules](https://tinytapeout.com/competitions/demoscene/#what-are-the-rules):
+
+[TinyVGA Pmod](https://github.com/mole99/tiny-vga) for video on o[7:0].
+
+1-bit sound on io[7], compatible with [Tiny Tapeout Audio
+Pmod](https://github.com/MichaelBell/tt-audio-pmod), or any basic ~20kHz RC filter
+on io7 to an amplifier will work.
+
+This audio is not going to sound very good on the built-in piezo speaker on the
+Pmod, though, so an external speaker is highly recommended.

projects/tt_um_a1k0n_demo/info.yaml

@@ -1,22 +1,25 @@
 # Tiny Tapeout project information
 project:
-  title:        "vgademo"
+  title:        "Demo by a1k0n"
   author:       "Andy Sloane"
   discord:      "a1k0n"
-  description:  "tt08 democompo entry"
+  description:  "Tiny Tapeout demo competition entry"
   language:     "Verilog"
-  clock_hz:     47989844  # N.B. this is a slightly detuned 48MHz to more closely match the ideal VGA horizontal frequency
+  clock_hz:     48000000
 
   # How many tiles your design occupies? A single tile is about 167x108 uM.
   tiles: "1x2"          # Valid values: 1x1, 1x2, 2x2, 3x2, 4x2, 6x2 or 8x2
 
   top_module:  "tt_um_a1k0n_demo"
-  
+
   source_files:        
     - "tt_um_a1k0n_demo.v"
     - "vgademo.v"
-    - "recip16.v"
+      # - "romcomb.v"
     - "rom.v"
+    - "recip16.v"
+    - "audiotrack.v"
+    - "songrom.v"
 
 # The pinout of your project. Leave unused pins blank. DO NOT delete or add any pins.
 pinout:
@@ -48,7 +51,7 @@ pinout:
   uio[4]: ""
   uio[5]: ""
   uio[6]: ""
-  uio[7]: ""
+  uio[7]: "AudioPWM"
 
 # Do not change!
 yaml_version: 6