Thomas Harte
|
5d40d70c92
|
Fixed 6560 addressing error, added an autotyper for Vic disks (more work potentially needed), fixed semantics for testing whether a 6502 is about to reset.
|
2016-08-01 10:32:32 -04:00 |
|
Thomas Harte
|
88964ceac0
|
Eliminated plain pointer passing for object types.
|
2016-07-04 19:33:55 -04:00 |
|
Thomas Harte
|
5c85366de2
|
Made an attempt to prevent spurious border colour pushes.
|
2016-06-29 21:22:26 -04:00 |
|
Thomas Harte
|
ff53accca0
|
Demonstrated that issue is coloured borders, made a guess as to buffer exhaustion, upped limits as a temporary fix.
|
2016-06-29 21:16:34 -04:00 |
|
Thomas Harte
|
0182b0483a
|
Added a 'power on' flag that is set automatically at construction but can be declined. Saves all that stuff of every machine having to set and then unset the RST line, and fixes an Electron bug related to that.
|
2016-06-29 19:13:24 -04:00 |
|
Thomas Harte
|
de5d2f1113
|
Ensured the line counter increments late on NTSC.
|
2016-06-27 22:12:55 -04:00 |
|
Thomas Harte
|
3c9183d034
|
Improved some commenting.
|
2016-06-23 20:43:29 -04:00 |
|
Thomas Harte
|
359ffb9aa7
|
Made some attempt to implement what appears to be the proper address generation logic.
|
2016-06-23 07:32:24 -04:00 |
|
Thomas Harte
|
b753690d5e
|
Made an attempt to adjust the 6560 to a model compatible with that advocated by the available documentation. Exact decision timing may need further work.
|
2016-06-21 22:12:01 -04:00 |
|
Thomas Harte
|
106e56600d
|
Added a DC offset for 6560 volume level, albeit one plucked from thin air.
|
2016-06-21 07:31:14 -04:00 |
|
Thomas Harte
|
ce2f5515c0
|
Made some minor documentation improvements, killed 6522.cpp as the 6522 is going to be a template only, attempting to promote good inlining behaviour.
|
2016-06-19 18:11:37 -04:00 |
|
Thomas Harte
|
ce7488dd30
|
Added support for _invertedCells. Treading water a little before making real changes.
|
2016-06-14 21:06:29 -04:00 |
|
Thomas Harte
|
926f819e3b
|
Added some documentation, made the speaker private.
|
2016-06-14 20:00:16 -04:00 |
|
Thomas Harte
|
a2a6e3c818
|
Fixed phase offsets.
|
2016-06-14 18:19:06 -04:00 |
|
Thomas Harte
|
f4884a3481
|
Added the noise channel, albeit not very creatively.
|
2016-06-14 17:50:32 -04:00 |
|
Thomas Harte
|
c18cc4c8f5
|
It appears the Vic's output is sine-ish, after all. Also adjusted centre of display, simultaneously adding some validation on that.
|
2016-06-14 07:29:35 -04:00 |
|
Thomas Harte
|
fdc854c0c2
|
Fixed tone channels; made an attempt at loading PRGs that are supposed to go into RAM.
|
2016-06-13 21:49:59 -04:00 |
|
Thomas Harte
|
efcb196ef7
|
Made a complete attempt at the tone channels.
|
2016-06-13 20:59:01 -04:00 |
|
Thomas Harte
|
f1a45c1011
|
Merge branch 'VicAudio' into Vic-20
|
2016-06-13 19:34:13 -04:00 |
|
Thomas Harte
|
2d23bc46f2
|
Whoops; fixed line count target test.
|
2016-06-13 19:34:01 -04:00 |
|
Thomas Harte
|
5fc36b956c
|
Attempted most basic sketching of a container for Vic audio.
|
2016-06-13 19:30:52 -04:00 |
|
Thomas Harte
|
91c406e065
|
Made an attempt to honour interlaced-frame line counts.
|
2016-06-13 18:21:21 -04:00 |
|
Thomas Harte
|
2e946e785f
|
Settled on half-intensity colour for now, appears likely not to be too incorrect(?)
|
2016-06-13 18:20:21 -04:00 |
|
Thomas Harte
|
e10535181d
|
Made an attempt to implement interlaced video.
|
2016-06-12 22:27:58 -04:00 |
|
Thomas Harte
|
4ad55a7f5e
|
Trimmed the visible area.
|
2016-06-12 18:01:38 -04:00 |
|
Thomas Harte
|
a5efa7543a
|
Added vertical sync, switching fully to the normal NTSC colour space.
|
2016-06-12 17:57:52 -04:00 |
|
Thomas Harte
|
4c2b964cd4
|
Added NTSC-VIC's switching of phase every field.
|
2016-06-12 17:45:25 -04:00 |
|
Thomas Harte
|
6b5a322918
|
Fixed all colours, plus special case no-chroma for black and white.
|
2016-06-12 17:41:52 -04:00 |
|
Thomas Harte
|
580c8bdcbd
|
Ported rest.
|
2016-06-12 17:29:44 -04:00 |
|
Thomas Harte
|
1a2b18f93b
|
Steps towards CPU mapping; diagnostic.
|
2016-06-12 17:27:57 -04:00 |
|
Thomas Harte
|
8abf395202
|
Experimented with table-based GLSL lookups, and a sine curve. Now _exceedingly_ slow, but colours are correct if I pretend I'm in the YUV colour space.
|
2016-06-12 14:57:24 -04:00 |
|
Thomas Harte
|
2992183aae
|
Switched to a lookup table for phase, temporarily in YUV colour space, probably. Working on it.
|
2016-06-12 14:39:17 -04:00 |
|
Thomas Harte
|
ed76e36b18
|
Made basic attempt at 16-line character mode.
|
2016-06-12 11:23:57 -04:00 |
|
Thomas Harte
|
1ed04fae1e
|
Resolved 6560 addressing.
|
2016-06-10 18:12:21 -04:00 |
|
Thomas Harte
|
f3b1d7de82
|
... and that's a flashing cursor. Keyboard input next!
|
2016-06-09 22:37:59 -04:00 |
|
Thomas Harte
|
30b7db3979
|
Attempted a square wave, made the Vic itself responsible for address manipulation re:the 6560.
|
2016-06-09 22:05:17 -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 |
|
Thomas Harte
|
ca23e2e10a
|
This now proceeds to an ostensibly working basic prompt. Colours are wrong, 6560 is probably very wrong, 6522 is still absent. Hence no cursor.
|
2016-06-06 20:33:06 -04:00 |
|
Thomas Harte
|
c7c55528e2
|
Realised that registers appear also to be readable.
|
2016-06-06 20:29:39 -04:00 |
|
Thomas Harte
|
e8cb674073
|
Made some attempt at colours, at least.
|
2016-06-06 20:18:24 -04:00 |
|
Thomas Harte
|
89c87c3e81
|
Some major hackiness gives the first line of expected text repeating endlessly (as the end of columns is never reached, as that's back to thinking it's 0x7f); I also don't yet know which actor is supposed to do the '+0x8000' (which probably shouldn't be that but might be a pin on the 6560 indicating what sort of value is being fetched, that effects chip select for the various bits of memory?)
|
2016-06-06 07:47:30 -04:00 |
|
Thomas Harte
|
64539a2b24
|
Advanced to having some characters displayed, even though they're obviously very much incorrect and the display is still rolling.
|
2016-06-06 07:35:35 -04:00 |
|
Thomas Harte
|
79e05a2413
|
Without yet figuring out what vertical sync is meant to do, moved just about far enough forwards to see _something_ that hopefully I can soon discern characters within.
|
2016-06-05 18:02:49 -04:00 |
|
Thomas Harte
|
444d3b69b6
|
Made some elementary attempt to hit something like the correct states within the VIC.
|
2016-06-05 17:06:10 -04:00 |
|
Thomas Harte
|
9e9e50edb1
|
Added guess on how colour memory and the 12-bit bus possibly works.
|
2016-06-05 16:28:06 -04:00 |
|
Thomas Harte
|
3be1ce457b
|
Made some attempt at discerning fields.
|
2016-06-05 14:05:31 -04:00 |
|
Thomas Harte
|
9566c87532
|
Added enough to the machine that the 6560 can now produce output if it wishes.
|
2016-06-05 12:11:12 -04:00 |
|
Thomas Harte
|
f922d38ed2
|
The Vic now captures the ROMs sent to it and has just enough infrastructure to get to a black screen. Progress!
|
2016-06-05 10:51:07 -04:00 |
|