Thomas Harte
|
f4915c5ad6
|
Fixed test and added basic implementation of data direction.
|
2016-06-18 17:17:03 -04:00 |
|
Thomas Harte
|
5d26cd85a3
|
Wrote test case for what appears to be correct timer behaviour if those were acting in isolation. Ensured implementation matches test case.
|
2016-06-18 14:30:23 -04:00 |
|
Thomas Harte
|
394902f409
|
Switched to clocking the 6522 by the half-cycle. Very trivial test now passes.
|
2016-06-18 13:57:10 -04:00 |
|
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 |
|