Waylon Cude
7980424dc8
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I think I did some funny math errors so new goal is 8-bit pcm
859 B
859 B
Bugs I Found
Audio Buffer
- Forgot to assign to a delay counter
Debouncer
- Logic was fundamentally wrong
- Found multiple logic bugs with testbench and then assertions
Display Converter
- Found a typo in a single digit
Low Freq Clock Gen
- Was initially trying to do modulo at max clock speed, failing timing
sd_rom
- ROM was getting totally optimized out and was doing nothing in simulation, and didn't show up in synthesized design
- Timing issues, ROM was one cycle slower than expected, latching takes an extra cycle too, had to rework state machines, there are a bonus 2 delay states when starting and ending writes
PWM
- major design problems
- clocked too slow
- initial goal of 16-bit audio isn't feasible because 100MHz isn't fast enough to pwm based on a 16-bit counter, would give a sample rate of 1.5khz