15 commits

Author	SHA1	Message	Date
Henry Sloan	27cadf6f5f	Change NT and APU logic so 4-screen games work	2021-03-31 14:57:37 -04:00
Henry Sloan	edbf003c7a	Update TODO messages	2021-03-26 12:17:22 -04:00
Henry Sloan	e409115153	Improve testing config and fix overflow bug	2021-03-23 15:29:53 -04:00
Henry Sloan	25deaa055e	Fix access constraints on sound channels	2021-03-23 10:34:59 -04:00
Henry Sloan	f899af2cad	Implement APU reset	2021-03-22 21:56:47 -04:00
Henry Sloan	95ded29ff0	Implement high- and low-pass filters	2021-03-22 18:11:22 -04:00
Henry Sloan	0c16175735	Initial working APU IRQs	2021-03-22 13:01:26 -04:00
Henry Sloan	2984235f93	Connect APU DMC DMA to CPU	2021-03-20 13:45:30 -04:00
Henry Sloan	283351e430	Mostly implement DMC channel	2021-03-20 13:20:47 -04:00
Henry Sloan	cafdd69980	Fix frame timing and length loading	2021-03-20 11:36:33 -04:00
Henry Sloan	6573af30b5	Initial working sound output	2021-03-20 02:52:49 -04:00
Henry Sloan	bb8a5c321f	Implement reading and connect working features	2021-03-19 22:41:54 -04:00
Henry Sloan	4fd3cc87d5	Implement register writes, except DMC	2021-03-19 22:27:56 -04:00
Henry Sloan	d8c38cdbe4	Modularize channels and add timing logic	2021-03-19 15:53:12 -04:00
Henry Sloan	4cdd48d53c	Add skeleton code for APU	2021-03-19 11:42:24 -04:00