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modules.md

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+## Planned Modules
+
+- SD Card Reader
+
+- VGA Controller
+  - Not sure if the framebuffer is here or in RAM?
+  - Each pixel is 12-bits
+  - Probably fit into 16-bit words in RAM?
+  - Plan on 640x480
+  - Should we do double buffering?
+
+- Audio Controller
+  - Again, not sure how the buffer will work. Might just take in 1KiB as a
+    verilog array?
+
+- Control logic
+  - Play
+  - Pause
+  - Volume up/down
+  - Fast forward
+    - Maybe start at 2x, then go to 4x then 8x with more presses?
+  - Rewind, maybe, it's real hard though
+
+- DRAM/SRAM controller
+  - We might need this for buffering frames? Not sure if we implicitly can use
+    SRAM with verilog arrays
+  - The SRAM interface is easier but slower
+  - Hopefully we don't need this but who knows
+
+- 8 segment display driver
+  - Takes in a play time in seconds and displays it in hour:minute:second
+  - Maybe could take in seconds, minutes, and hours separately?
+    - This would save us from having to do modulo
+    - It'd be easy to check if seconds == 60 and then increment minutes
+