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5,832 Commits 9 Branches 118 Tags 496 MiB
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1743 Commits

Author SHA1 Message Date
Thomas Harte
05d77d3297 Also deploys make_unique/shared to avoid type repetition. 2019-12-21 23:52:04 -05:00
Thomas Harte
e5440a4146 Hacks in a colour burst. 
With a major flaw: it's implicit. I think I need a minor rethink of various components here.
 2019-12-20 23:49:38 -05:00
Thomas Harte
47508d50a7 Wires through a composite video option for the ST. 
Which is great and all, except that I've not yet inserted a colour burst. So it's monochrome.
 2019-12-20 20:49:14 -05:00
Thomas Harte
3d83f5ab49 Ensures a proper size handoff and implements a ripple feature I happened to find a forum post about. 2019-12-19 22:58:07 -05:00
Thomas Harte
0007dc23b3 Eliminates bit 0 of the DMA address. 2019-12-19 22:44:21 -05:00
Thomas Harte
ed7f171736 Moves address reload to end of vertical sync. 
I have no information as to when it should be, so this is as valid a guess as any other.
 2019-12-19 22:20:43 -05:00
Thomas Harte
0e066f0f70 Removes 'done' TODO. 
For certain values of done.
 2019-12-19 22:19:59 -05:00
Thomas Harte
d85ae21b2f Adds an explicit declaration of chip type to all AY users. 2019-12-18 19:28:41 -05:00
Thomas Harte
c00ae7ce6a Adds a one-cycle delay on frequency changes. 2019-12-13 19:57:54 -05:00
Thomas Harte
4bcf217324 Ensures delayed loading isn't interrupted by blank, hsync. 2019-12-12 23:20:28 -05:00
Thomas Harte
f6f2b4b90f Removes double DE edge test. 2019-12-12 22:50:35 -05:00
Thomas Harte
95b5db4d87 Tweaks timings yet further, adds a FIFO reset. 
The accuracy of this may require further research.
 2019-12-11 23:22:20 -05:00
Thomas Harte
de4403e021 Corrects blank timing. 2019-12-10 22:17:57 -05:00
Thomas Harte
0a405d1c06 Introduces a latency between DE and load. 2019-12-10 21:24:15 -05:00
Thomas Harte
768b3709b8 Corrects audio clock rate. 2019-12-10 20:25:27 -05:00
Thomas Harte
a7cfb840ef Adds but presently disables a diagnostic for border elimination. 2019-12-08 22:34:42 -05:00
Thomas Harte
c785797da6 Adds a warning for unhandled reset. 2019-12-08 21:01:30 -05:00
Thomas Harte
0408592ada Switches to byte buffers and seeks to reduce unnecessary video flushing. 2019-12-08 20:20:13 -05:00
Thomas Harte
0ed87c61bd Introduces an explicit area of floating bus, starts adding bus errors. 2019-12-08 11:52:43 -05:00
Thomas Harte
08a27bdec7 NTSC frame length is correct; removes TODO. 2019-12-08 11:51:12 -05:00
Thomas Harte
894066984c Moves beginning and end of vertical sync to what I now believe is its proper place. 
At least one demo now successfully opens the top border.
 2019-11-19 20:13:47 -05:00
Thomas Harte
e787c03530 Slightly shortens NTSC frame. 
Either: (i) 263 is incorrect; or (ii) my logic as to frame height is incorrect. Given that the horizontal side of things is really well documented, I'm currently guessing (i). Research to do.
 2019-11-18 23:47:27 -05:00
Thomas Harte
c04d2f6c6e Restricts DTack delay to RAM and Shifter accesses. 2019-11-18 22:57:13 -05:00
Thomas Harte
6990abc0d3 Tweaks selected output mode when both BPP bits are set. 2019-11-18 22:56:40 -05:00
Thomas Harte
ade8df7217 Permits a delay on DE propagation back to the CPU. Plus tests. 
Currently set at 28 cycles, but I don't know.
 2019-11-18 22:12:24 -05:00
Thomas Harte
82c984afa4 Switches the joysticks around. 
Thereby finally allowing me to control mode games.
 2019-11-18 20:02:27 -05:00
Thomas Harte
1202b0a65f Establishes a pipeline for delayed public state visibility. 2019-11-17 23:28:00 -05:00
Thomas Harte
facc0a1976 Amps up the documentation. 2019-11-17 21:28:51 -05:00
Thomas Harte
253dd84109 Corrects accidental dropping of pixel residue. 
Specific issue: the repeated (start_column != end_column) test, which can no longer be correct if start_column has been incremented in the (x_&7) test.

The visible effect was to omit pixels from the output wave, which also affected observed sync timing.
 2019-11-17 18:34:13 -05:00
Thomas Harte
2c4f372872 Adds support for the .ST file format. 2019-11-12 23:23:14 -05:00
Thomas Harte
f4cfca0451 Merge branch 'master' of github.com:TomHarte/CLK 2019-11-12 19:38:44 -05:00
Thomas Harte
eb287605f7 Switches to a default of TOS 1.04. 2019-11-12 19:38:30 -05:00
Thomas Harte
6a82c87320 Withdraws border optimisation temporarily; I think I may be onto an output bug here. 2019-11-12 19:33:13 -05:00
Thomas Harte
f0478225f0 Adjusts logic to reduce number of output spans. 2019-11-12 19:30:28 -05:00
Thomas Harte
c6f6bc68e1 Undoes non-insertion of media. 2019-11-10 21:52:06 -05:00
Thomas Harte
ab34fad8ca Introduces a cleaner, separated shifter. 2019-11-10 21:39:40 -05:00
Thomas Harte
7ae0902103 Adds additional joystick commands to the dispatcher. 2019-11-09 20:10:54 -05:00
Thomas Harte
8e9428623e Adds joystick events to the Atari ST. 2019-11-09 18:39:22 -05:00
Thomas Harte
2c25135d8a Fixes const correctness for joystick machines; the ST is now one such. 2019-11-09 18:19:05 -05:00
Thomas Harte
860837d894 Corrects: KeyPad -> Keypad. Also fleshes out Atari ST keyboard mapping. 2019-11-09 18:02:14 -05:00
Thomas Harte
0204003680 Resolves GCC warnings. 2019-11-09 16:12:37 -05:00
Thomas Harte
77ef7dc8fc Shuffles ST and 2600 into a common parent. 2019-11-09 15:31:41 -05:00
Thomas Harte
e3abbc9966 Renames what didn't end up being a whole SerialPort. 2019-11-09 15:21:51 -05:00
Thomas Harte
70c6010fe0 Expands visible area and adds a few more safety barriers. 2019-11-09 15:00:42 -05:00
Thomas Harte
45375fb5d0 Makes endian aware. 2019-11-09 09:48:59 -05:00
Thomas Harte
d2324e413d Clarifies ownership of bpp-has-changed test. 2019-11-09 00:10:59 -05:00
Thomas Harte
e0c15f43bb Avoids massive over-flushing of pixel buffers. 2019-11-09 00:05:02 -05:00
Thomas Harte
8b0d550b81 Attempts to move vertical sync out to cycle 30. 2019-11-08 22:18:47 -05:00
Thomas Harte
d1259f829e Moves vertical state decisions back to cycle 502. 2019-11-08 21:42:05 -05:00
Thomas Harte
7caef46c05 Switches back to hsync for interrupts; corrects current address reads. 2019-11-08 21:25:28 -05:00
Thomas Harte
6902251d8b Fixed: returns video address in bytes, not words. 2019-11-08 20:47:08 -05:00
Thomas Harte
0b683b0360 Adds some sanity checks. 2019-11-08 20:46:24 -05:00
Thomas Harte
5d5dc79f2c Corrects raster race condition with CPU. 2019-11-07 23:27:05 -05:00
Thomas Harte
b7c407be10 The palette is meant to be read/write. 2019-11-07 23:11:06 -05:00
Thomas Harte
f45798faf0 Corrects initial safe value of line_length_. 2019-11-07 22:53:26 -05:00
Thomas Harte
7c66d7a13c Corrects sync and line-length latch timings. 2019-11-07 22:53:04 -05:00
Thomas Harte
5e1570258d I think the horizontal interrupt is blank, not sync. 2019-11-07 22:00:50 -05:00
Thomas Harte
fc8021c0b0 Adds a centre crop. 2019-11-07 20:02:45 -05:00
Thomas Harte
c9cd56915e Corrects typo that was adding an extra line of PAL video. 2019-11-07 19:55:49 -05:00
Thomas Harte
1fd19c5786 Attempts to add proper bus timing. 2019-11-07 19:55:00 -05:00
Thomas Harte
ce66b5fd9c Corrected member variable names. 2019-11-07 19:44:22 -05:00
Thomas Harte
8aa425c9d8 Fixes medium resolution mode. 2019-11-06 23:25:36 -05:00
Thomas Harte
ec68bc5047 Corrects output glitches: channel de sync and improper border beginnings. 2019-11-06 22:37:05 -05:00
Thomas Harte
0ce807805d Eliminates most masks, at least for now. 2019-11-05 23:17:59 -05:00
Thomas Harte
41f3c29e30 Attempts to switch to correct video state machine. 
Some glitches remain to be ironed out.
 2019-11-05 23:02:25 -05:00
Thomas Harte
8df1eea955 Goes big on flushing. 2019-11-03 23:03:50 -05:00
Thomas Harte
eeafdf2c03 Slightly expands list of recognised Intelligent Keyboard commands. 2019-11-03 21:58:15 -05:00
Thomas Harte
befe2c2929 Adds floppy drive activity indicators. 2019-11-03 21:57:54 -05:00
Thomas Harte
e9965c2738 Obeys stated memory size. 2019-11-03 21:18:17 -05:00
Thomas Harte
48b0d8c329 Adds bus req/ack to the DMA controller; hacks support into the ST. 2019-11-03 21:11:25 -05:00
Thomas Harte
4dbd2a805a Nudges closer to DMA support. 2019-11-03 17:24:36 -05:00
Thomas Harte
20bf425f98 Drive select lines are active low. 2019-11-02 23:37:56 -04:00
Thomas Harte
0567410bcf Attempts to start getting the WDC working. 2019-11-02 23:26:42 -04:00
Thomas Harte
6d1e09ba55 Connects up the AY to floppy drive/side selection. 2019-11-02 23:04:08 -04:00
Thomas Harte
f40dbefa67 Implements most of keyboard input. 2019-11-02 22:30:02 -04:00
Thomas Harte
f93cdd21de Reverses bit order. 
So, for the first time: a green desktop.
 2019-11-02 21:53:04 -04:00
Thomas Harte
e1dc3b1915 Reverses mouse buttons. 
So I can now navigate the disk-less GEM desktop and click on things.
 2019-11-02 21:38:57 -04:00
Thomas Harte
cbf25a16dc Adds relative mouse motion input. 2019-11-02 21:25:45 -04:00
Thomas Harte
bf7e9cfd62 Pulls the intelligent keyboard into its own file. 2019-11-02 19:47:44 -04:00
Thomas Harte
a67e0014a4 Fixes video base address and mono/colour monitor value. 
Now I see a GEM desktop. In blue.
 2019-11-02 19:36:15 -04:00
Thomas Harte
c070f2100c Attempts to regularise data bus access. 2019-11-01 23:01:06 -04:00
Thomas Harte
75e34b4215 Reacts to no acknowledgement. 2019-10-31 21:00:05 -04:00
Thomas Harte
731dc350b4 Adds sometime real-time clocking for DMA. 2019-10-30 22:59:32 -04:00
Thomas Harte
635e18a50d Ensures the MFP requests and receives real-time clocking when needed. 2019-10-30 22:42:06 -04:00
Thomas Harte
1c154131f9 Expands size of storage in Cycles/HalfCycles; adjusts widely to compensate. 2019-10-29 22:36:29 -04:00
Thomas Harte
1135576a3a Comments in slightly more detail. 2019-10-28 22:12:56 -04:00
Thomas Harte
1d790ec2a9 Adds the option for a clock conversion to JustInTimeActor and slows the MFP's clock rate. 2019-10-28 21:35:10 -04:00
Thomas Harte
0f2d72c436 Ensures receipt of output line changes. 2019-10-28 21:21:53 -04:00
Thomas Harte
4a1fa8fc13 Adds some const qualifiers. 2019-10-28 21:13:42 -04:00
Thomas Harte
95d3b6e79f Adds a through route for the FDC interrupt line. 2019-10-28 21:13:21 -04:00
Thomas Harte
d44734d105 Attempts a fuller setting of GPIP inputs. 2019-10-27 22:39:21 -04:00
Thomas Harte
1aaa6331a0 Stores and returns video mode. 2019-10-27 22:39:00 -04:00
Thomas Harte
0cb19421e8 Adds prefix to mouse position response. 2019-10-27 21:46:03 -04:00
Thomas Harte
92847037b3 Merge branch 'master' into AtariST 2019-10-27 21:40:51 -04:00
Thomas Harte
0fc191c87d Switched a few static_cast to constructor syntax. 2019-10-27 14:21:22 -04:00
Thomas Harte
dc4a0e4e3b Video only ever reads from RAM, so it can be const *. 
(it can also be *const, since I set it only once)
 2019-10-27 14:09:38 -04:00
Thomas Harte
36a9a5288b Adds drives to the FDC. 2019-10-26 22:39:11 -04:00
Thomas Harte
ac39fd0235 Starts work on the DMA controller. 2019-10-26 21:33:57 -04:00
Thomas Harte
ecc0cea5a1 Added a potential branch for the newer TOS memory map. 2019-10-26 16:52:06 -04:00
Thomas Harte
eae11cbf17 Adds a dummy response for mouse interrogation. 2019-10-26 16:14:24 -04:00