Waylon Cude
dff929de84
This module needs way reworked to just be a state machine. I was trying to get way too tricky with it so I went back to the drawing board and made a state machine diagram for it. The diagram is included with this commit. I also moved the current collection of documentation to a doc/ folder, and added a second-long audio rom to test everything out once the rom_sd is working.
36 lines
1.0 KiB
Markdown
36 lines
1.0 KiB
Markdown
## Planned Modules
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- SD Card Reader
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- VGA Controller
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- Not sure if the framebuffer is here or in RAM?
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- Each pixel is 12-bits
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- Probably fit into 16-bit words in RAM?
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- Plan on 640x480
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- Should we do double buffering?
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- Audio Controller
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- Again, not sure how the buffer will work. Might just take in 1KiB as a
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verilog array?
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- Control logic
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- Play
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- Pause
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- Volume up/down
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- Fast forward
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- Maybe start at 2x, then go to 4x then 8x with more presses?
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- Rewind, maybe, it's real hard though
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- DRAM/SRAM controller
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- We might need this for buffering frames? Not sure if we implicitly can use
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SRAM with verilog arrays
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- The SRAM interface is easier but slower
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- Hopefully we don't need this but who knows
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- 8 segment display driver
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- Takes in a play time in seconds and displays it in hour:minute:second
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- Maybe could take in seconds, minutes, and hours separately?
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- This would save us from having to do modulo
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- It'd be easy to check if seconds == 60 and then increment minutes
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