12 Commits

Author	SHA1	Message	Date
Thomas Harte	595791cee0	Made the base 6522 class more abstract: you must now opt-in if you want the IRQ line to be sent to a delegate.	2016-06-18 08:51:18 -04:00
Thomas Harte	d1731b1d26	Hacked my 6522 to work. Mistake is in not returning output as input when appropriate — i.e. that I'm ignoring data direction. Also fixed K and L keys.	2016-06-11 13:06:01 -04:00
Thomas Harte	7a241b5ef5	Added just enough hopefully to allow implementation of the keyboard-input VIA.	2016-06-11 11:34:39 -04:00
Thomas Harte	de84758862	This is how flags writes are supposed to work, it seems.	2016-06-11 07:58:32 -04:00
Thomas Harte	1054793fd7	Fixed interrupt enable register. This makes a lot more sense!	2016-06-11 07:57:04 -04:00
Thomas Harte	82a3c4964b	Decided to keep the internal copy of the interrupt enable the other way around. Reduced delegate noise.	2016-06-11 07:49:07 -04:00
Thomas Harte	a71259dec3	Gave the 6522 a full and grouped register set.	2016-06-11 07:12:55 -04:00
Thomas Harte	f3b1d7de82	... and that's a flashing cursor. Keyboard input next!	2016-06-09 22:37:59 -04:00
Thomas Harte	e99055bedb	Attempted switching back to a square wave for the composite video and otherwise implementing what's necessary to get to that flashing cursor — the 6560 returns its scan line and the timing bits of the 6522 are appearing.	2016-06-08 22:15:24 -04:00
Thomas Harte	581eace478	Increased logging slightly, ensured all of colour RAM can be read, slightly improved the 2600 pixel decoder.	2016-06-07 22:01:14 -04:00
Thomas Harte	26ab96868a	Decided to turn the 6522 into a template, since it's a per-cycle thing with variable behaviour. Added appropriate memory map callouts to hit the two in the Vic. Though they don't yet do anything.	2016-06-07 19:15:18 -04:00
Thomas Harte	6522530e1c	Actually, I'm dithering over whether the 6522 should be an ordinary class or a curiously-recurring template. But it'll need a file, definitely.	2016-06-06 21:56:02 -04:00