Thomas Harte
|
4bb70e7d31
|
Resetting the mask upon low byte write appears to resolve some issues.
|
2017-03-19 18:49:37 -04:00 |
|
Thomas Harte
|
321030bb44
|
Added a slightly faulty but seemingly 'close' version of masking.
|
2017-03-19 18:28:06 -04:00 |
|
Thomas Harte
|
6c161b1150
|
This gives something that might be the correct background.
|
2017-03-19 17:49:48 -04:00 |
|
Thomas Harte
|
d5c37c8619
|
Shushed a little, so as to be able to see a reasonable amount of output during my lifetime.
|
2017-03-19 17:38:54 -04:00 |
|
Thomas Harte
|
7c66c36d3f
|
Attempted at least to manage appropriate data storage.
|
2017-03-19 17:31:08 -04:00 |
|
Thomas Harte
|
031a68000a
|
Added a class to contain the Pitfall 2 pager and a skeleton of initial work.
|
2017-03-18 22:08:47 -04:00 |
|
Thomas Harte
|
c3d82f88a5
|
Tidied up and commented on the Activision stack implementation.
|
2017-03-18 21:01:58 -04:00 |
|
Thomas Harte
|
c033bad0b9
|
Here's MNetwork!
|
2017-03-18 20:51:49 -04:00 |
|
Thomas Harte
|
c31d85f820
|
Re-emplaced the MegaBoy. Also cut detritus from the main Atari header.
|
2017-03-18 19:02:34 -04:00 |
|
Thomas Harte
|
217fbf257e
|
CBS RAM Plus returns.
|
2017-03-18 18:56:20 -04:00 |
|
Thomas Harte
|
0b611a14b9
|
Tigervision paging returns.
|
2017-03-18 18:50:13 -04:00 |
|
Thomas Harte
|
df6861c9dc
|
Parker Bros paging is back.
|
2017-03-18 18:21:01 -04:00 |
|
Thomas Harte
|
a4cd12394e
|
Reinstated the Activision stack pager.
|
2017-03-18 18:03:48 -04:00 |
|
Thomas Harte
|
e0bca1e37b
|
Reinstated the 16 and 32 kb Atari pagers, and ensured the 6532 always starts in a valid state.
|
2017-03-18 17:34:34 -04:00 |
|
Thomas Harte
|
55ce851bb2
|
Fixed types of the 8k cartridges, ensured the 6502 starts without an IRQ request history.
|
2017-03-18 17:04:01 -04:00 |
|
Thomas Harte
|
e8d34f2eb4
|
Having farmed out the bus, the Atari itself no longer is/owns a 6502.
|
2017-03-18 16:34:41 -04:00 |
|
Thomas Harte
|
bb3daaa99b
|
Sought to reintroduce the Atari 8k paging scheme, at the same time deciding to do away with the copy and paste of holding on to ROM data.
|
2017-03-18 15:04:01 -04:00 |
|
Thomas Harte
|
36b58d03b7
|
Formalised read bus value guarantee from the 6502, fixed missing clock signal wiring on the Atari cartridge class, reintroduced CommaVid support.
|
2017-03-18 14:46:46 -04:00 |
|
Thomas Harte
|
7958459db9
|
In theory unpaged cartridges should now work. Time to debug.
|
2017-03-18 14:01:04 -04:00 |
|
Thomas Harte
|
14a76af0d3
|
Started trying to float out bus control to cartridges.
|
2017-03-17 20:28:07 -04:00 |
|
Thomas Harte
|
afbd9fd41b
|
Fixed declared line length.
|
2017-03-14 21:33:38 -04:00 |
|
Thomas Harte
|
7302703039
|
Implemented the Activision stack paging scheme.
|
2017-03-14 20:24:05 -04:00 |
|
Thomas Harte
|
97a8a96593
|
Rejigged how the memory map is handled and implemented MNetwork support.
|
2017-03-14 20:07:54 -04:00 |
|
Thomas Harte
|
3b29276228
|
Implemented the MegaBoy paging scheme.
|
2017-03-14 17:40:01 -04:00 |
|
Thomas Harte
|
b3632a4e86
|
Institutes CBS RAM Plus emulation.
|
2017-03-14 17:25:10 -04:00 |
|
Thomas Harte
|
f0d944847b
|
Fixed setting of the second 1kb.
|
2017-03-11 18:16:29 -05:00 |
|
Thomas Harte
|
add14fb43a
|
Made an attempt to implement Tigervision paging.
|
2017-03-11 17:44:35 -05:00 |
|
Thomas Harte
|
33bda2d40c
|
Switched to image inspection for RAM guesses rather than disassembly. Which fixes the other Parker Bros titles.
|
2017-03-11 13:04:23 -05:00 |
|
Thomas Harte
|
2b5e3a600e
|
Made a first attempt at implementing the Parker Bros pager within the emulation.
|
2017-03-11 12:43:12 -05:00 |
|
Thomas Harte
|
9c72ce5bd2
|
Ensured a settling delay is permitted before an NTSC/PAL decision is made. To avoid false switches just due to startup.
|
2017-03-06 19:37:35 -05:00 |
|
Thomas Harte
|
79784a8e57
|
Followed tip: missiles are locked to the position after four output pixels, not four input pixels.
|
2017-03-04 22:23:50 -05:00 |
|
Thomas Harte
|
4751615623
|
Fixed NTSC colour cycle count, and hence the 2600's reported line lengths and phase offset.
|
2017-03-04 17:31:39 -05:00 |
|
Thomas Harte
|
d3257c345a
|
Tested against public ROMs and corrected. Also moved the deferred adjustment into a more canonical place.
|
2017-03-04 17:00:28 -05:00 |
|
Thomas Harte
|
837cccdf83
|
Switched to deferred updates for the 6532.
|
2017-03-04 14:58:28 -05:00 |
|
Thomas Harte
|
93d1573481
|
Added a fix for certain homebrews.
|
2017-03-01 07:59:25 -05:00 |
|
Thomas Harte
|
893a5dd007
|
Added an artificial low pass filter, attempting to capture post-digital effects.
|
2017-02-28 21:29:55 -05:00 |
|
Thomas Harte
|
06dd98b23c
|
Pulled the reset time for horizontal blank extend up to position 224.
|
2017-02-28 20:28:54 -05:00 |
|
Thomas Harte
|
184c8ae707
|
Extended to emulate the CommaVid.
|
2017-02-27 20:50:59 -05:00 |
|
Thomas Harte
|
9d7985c1e1
|
Added Super Chip emulation.
|
2017-02-26 17:47:29 -05:00 |
|
Thomas Harte
|
e6a84fd26b
|
Attempted a hardware-correct implementation of missile-to-player latching. This completes the last of the **knowing** inaccuracies. The rest are as-of-yet unwitting.
|
2017-02-26 15:12:31 -05:00 |
|
Thomas Harte
|
440467ea3e
|
Started communicating which copy is being requested.
|
2017-02-26 13:39:25 -05:00 |
|
Thomas Harte
|
98376de9ad
|
Started returning 'no effect' for pot ports, rather than doing nothing. Still very much TODO though.
|
2017-02-25 22:58:58 -05:00 |
|
Thomas Harte
|
e61e355251
|
Moved to the maximum possibly required queue length of 4. Though the emulated 2600 should never need more than 2 slots as per the current calling pattern, it's not a contractual guarantee.
|
2017-02-25 17:25:10 -05:00 |
|
Thomas Harte
|
c898c8a99e
|
Ensured the missiles and ball don't attempt to enqueue. Because I don't think they're supposed to.
|
2017-02-25 17:13:22 -05:00 |
|
Thomas Harte
|
8c9062857c
|
Added a single-slot queue for player objects to defer drawing, thereby deferring pixel lookup. Which I think is correct. Though more slots might be needed.
|
2017-02-25 17:10:24 -05:00 |
|
Thomas Harte
|
77ed4ddc05
|
Slightly simplified ready line release logic.
|
2017-02-23 21:08:32 -05:00 |
|
Thomas Harte
|
82f392fada
|
This should be the other way around. I want whichever is later.
|
2017-02-22 21:54:49 -05:00 |
|
Thomas Harte
|
8291a63d5f
|
Fixed loss of audio when switching to PAL.
|
2017-02-22 21:15:37 -05:00 |
|
Thomas Harte
|
6120dae61a
|
While I'm using the hacky approach to player/missile synchronisation, I need to seed adder.
|
2017-02-22 07:39:11 -05:00 |
|
Thomas Harte
|
4f5f191cd6
|
Fixed: will no longer attempt to output pixels from before the pixel part of a line on which sync was disabled abruptly.
|
2017-02-22 07:33:36 -05:00 |
|
Thomas Harte
|
21abf4e9fc
|
Enshrined a terminology switch, albeit without any flow change behind it.
|
2017-02-22 07:29:48 -05:00 |
|
Thomas Harte
|
144d6b70d9
|
Minor cleaning.
|
2017-02-22 07:14:30 -05:00 |
|
Thomas Harte
|
b769f22ca0
|
Switched back to the collision_buffer_ being part of the TIA object, added one more assert.
|
2017-02-21 22:26:20 -05:00 |
|
Thomas Harte
|
7019d396d0
|
Threw in some asserts, discovering a bug in missile positioning.
|
2017-02-21 22:04:27 -05:00 |
|
Thomas Harte
|
f4447fd9cd
|
Attempted to fix failure of sprites properly to wrap when performing motion.
|
2017-02-21 21:53:09 -05:00 |
|
Thomas Harte
|
36396b3d62
|
Made a slightly better, albeit still inaccurate, version of missile-player lock.Enough for Combat to do reasonable things.
|
2017-02-21 20:45:20 -05:00 |
|
Thomas Harte
|
d1dbf8c21f
|
Missile to player lock is supposed to be a toggle; also factored out the commonalities of missile and ball drawing.
|
2017-02-21 07:58:37 -05:00 |
|
Thomas Harte
|
1bde0fed6f
|
Simplified relationship between Objects and the usage-specific components through inheritance.
|
2017-02-21 07:37:20 -05:00 |
|
Thomas Harte
|
7ab2358bba
|
Made an attempt to reintroduce missiles.
|
2017-02-20 22:22:39 -05:00 |
|
Thomas Harte
|
99547181f1
|
Attempted to template this thing. Without yet a plan in place for pixel lookup timing.
|
2017-02-20 21:42:59 -05:00 |
|
Thomas Harte
|
2bf784535c
|
Simplified calllng.
|
2017-02-20 18:04:40 -05:00 |
|
Thomas Harte
|
57f434c199
|
Reorganised state, with an eye towards unifying object motion and triggers.
|
2017-02-20 17:58:28 -05:00 |
|
Thomas Harte
|
99a35266e1
|
Attempted to bring frequency-switching logic into the cross-platform realm. Which for now creates an issue with the OpenGL context.
|
2017-02-19 21:20:37 -05:00 |
|
Thomas Harte
|
51bcaea60c
|
Disabled incorrect 'optimisations'.
|
2017-02-19 12:00:04 -05:00 |
|
Thomas Harte
|
e00339ef0a
|
Attempted to reintroduce the ball.
|
2017-02-19 08:02:54 -05:00 |
|
Thomas Harte
|
53cd125712
|
Added stub calls to draw the missiles and ball.
|
2017-02-19 07:28:24 -05:00 |
|
Thomas Harte
|
04693b067c
|
Fixed failure of the optimised route to pump the pixel clock; removed optimisation entirely for now.
|
2017-02-18 21:36:48 -05:00 |
|
Thomas Harte
|
cd7876a746
|
Reintroduced the extra clocking delay.
|
2017-02-18 20:18:50 -05:00 |
|
Thomas Harte
|
ed5ff49ef5
|
Fixed vertical delay, retreated from my previous thought about adding the one extra cycle of sprite delay, at least temporarily.
|
2017-02-16 20:52:01 -05:00 |
|
Thomas Harte
|
8d502a0b03
|
Decided not to run before I can walk and switched to storing the motion time and next step explicitly per object.
|
2017-02-16 20:28:37 -05:00 |
|
Thomas Harte
|
5ea232310f
|
Added a check against negative runs.
|
2017-02-16 18:55:58 -05:00 |
|
Thomas Harte
|
09309aa74f
|
Attempted to prevent extraneous moves.
|
2017-02-16 18:52:39 -05:00 |
|
Thomas Harte
|
b5357860b9
|
Made an attempt to split things apart so as to be able to introduce the proper sprite latency.
|
2017-02-14 20:56:16 -05:00 |
|
Thomas Harte
|
cd90118a0f
|
Added two, extraordinarily simple tests.
|
2017-02-12 20:32:53 -05:00 |
|
Thomas Harte
|
25776de59d
|
I think unit testing this thing is the only way forwards. Started adding appropriate hooks.
|
2017-02-12 19:55:02 -05:00 |
|
Thomas Harte
|
600bdc9af7
|
In C++, I think the implicit cast to bool negates the need for any manual collapsing?
|
2017-02-12 18:18:35 -05:00 |
|
Thomas Harte
|
0c9be2b09e
|
Shunted the collisions buffer onto a separate area of the heap for the time being, as a debugging aid. Also added a few more initial values.
|
2017-02-12 18:16:50 -05:00 |
|
Thomas Harte
|
df8a5cbe6d
|
Made attempts (i) to respect the delay flag; and (ii) to account for border-region sprite clocking.
|
2017-02-12 17:35:09 -05:00 |
|
Thomas Harte
|
9ce68c38ae
|
Made an effort to implement proper pixel output for sprites.
|
2017-02-12 14:01:50 -05:00 |
|
Thomas Harte
|
40954d6a2a
|
Attempted to factor out parts I expect to reuse for missiles and the ball.
|
2017-02-12 11:31:17 -05:00 |
|
Thomas Harte
|
ac444a3f34
|
Corrected both position increments and target time calculation.
|
2017-02-11 21:24:14 -05:00 |
|
Thomas Harte
|
b8abeced6d
|
Made an attempt to introduce the proper eventful loop for player output. With debugging yet to occur.
|
2017-02-11 21:01:58 -05:00 |
|
Thomas Harte
|
aeff59addc
|
Implemented motion 'correctly', for programs written to do all work outside of the pixel area.
|
2017-02-11 20:25:49 -05:00 |
|
Thomas Harte
|
6381e4e1b0
|
All that's happened to position is that numbers have been added to it. So it can't be negative, given that it wasn't before. So a regular modulo will do.
|
2017-02-11 13:34:36 -05:00 |
|
Thomas Harte
|
905ed1f87b
|
Switched to the more natural type, which is also signed, making my logic less prone to error.
|
2017-02-11 13:16:53 -05:00 |
|
Thomas Harte
|
8de6caf6ff
|
Started trying to get into a proper structure here. Chickened out.
|
2017-02-11 12:59:13 -05:00 |
|
Thomas Harte
|
40d3f5f7f6
|
Attempted properly to respect start.
|
2017-02-11 08:26:09 -05:00 |
|
Thomas Harte
|
64d5712d1d
|
Added an incorrectly-coded version of horizontal move, at least so that I can verify that information is going into the correct slots.
|
2017-02-10 07:23:43 -05:00 |
|
Thomas Harte
|
3b20d862f0
|
Made an initial attempt to mark sprite positions. But without hmove implemented, they're all over the place.
|
2017-02-09 20:53:42 -05:00 |
|
Thomas Harte
|
2e9ef2b0ef
|
Took a shot at reinstating the horizontal blank extend flag.
|
2017-02-09 18:37:19 -05:00 |
|
Thomas Harte
|
70745286a5
|
Ensured this array is properly aligned for the uin32_t accesses I intend to make for background drawing.
|
2017-02-08 20:25:23 -05:00 |
|
Thomas Harte
|
dcb7584060
|
Added the four-cycle playfield output latency and ensured you can't get smaller-than-usual pixels by rapid register value changing.
|
2017-02-08 07:30:32 -05:00 |
|
Thomas Harte
|
a477499724
|
Got a bit more explicit with range returned by get_cycles_until_horizontal_blank and hence attempted a more thorough (/correct) version of WSYNC.
|
2017-02-07 22:14:45 -05:00 |
|
Thomas Harte
|
944d835eea
|
Switched explicitly to an accumulation model for filling the collision buffer.
|
2017-02-06 21:59:28 -05:00 |
|
Thomas Harte
|
8f5039130c
|
Changed index naming order to ensure no out-of-bounds accesses.
|
2017-02-06 21:48:41 -05:00 |
|
Thomas Harte
|
ba165bb70a
|
Made an attempt properly to populate collision registers from the collision buffer.
|
2017-02-06 21:15:55 -05:00 |
|
Thomas Harte
|
474e2e8d2c
|
Fixed once again to respect mid-line palette changes.
|
2017-02-06 20:09:12 -05:00 |
|
Thomas Harte
|
8b8eb787df
|
Fixed complete invisibility.
|
2017-02-06 18:42:58 -05:00 |
|
Thomas Harte
|
66bcdd36f3
|
Made an attempt to introduce an intermediate buffer that ends up with a bit mask of all graphical components present on it, and to use that to infer collision flags and colours, based on playfield priority and colour palette. Immediately yielding: a blank screen. Good work!
|
2017-02-06 18:29:00 -05:00 |
|
Thomas Harte
|
6bcf95042c
|
Started trying to be a bit more explicit about usage, and to divide up drawing responsibility.
|
2017-02-05 17:51:56 -05:00 |
|