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
Thomas Harte
2207638287
Adds hsync and vsync interrupts.
2019-10-25 22:42:13 -04:00
Thomas Harte
872897029e
Attempts a complete wiring of 68901 interrupts.
2019-10-25 22:36:01 -04:00
Thomas Harte
51b4b5551d
Actually, I think the 6850 is active low for interrupts.
2019-10-24 22:37:53 -04:00
Thomas Harte
092a61f93e
Does a better job of having just 512kb.
2019-10-21 23:10:30 -04:00
Thomas Harte
e30ba58e0d
Attempts to wire ACIA interrupt signals into the MFP.
2019-10-21 23:02:30 -04:00
Thomas Harte
83d73fb088
The keyboard now responds to a reset on its serial line.
2019-10-20 23:13:44 -04:00
Thomas Harte
75c3e2dacd
Adds basic, incomplete dispatcher for the intelligent keyboard.
2019-10-20 23:07:19 -04:00
Thomas Harte
cf07982a9b
Ensures good serial line and ACIA behaviour.
...
Next stop: having the intelligent keyboard react.
2019-10-20 22:10:05 -04:00
Thomas Harte
313aaa8f95
Silences temporarily.
2019-10-20 20:38:56 -04:00
Thomas Harte
696af5c3a6
Starts to transfer serial line decoding logic into the line itself.
2019-10-20 20:38:56 -04:00
Thomas Harte
9a8352282d
Mostly but not quite fixes serial work.
2019-10-20 20:38:55 -04:00
Thomas Harte
34075a7674
Attempts to tie an intelligent keyboard to the other end of its serial line.
2019-10-20 20:38:55 -04:00
Thomas Harte
ff62eb6dce
The ACIA actually has two clocks, though on an ST they're both 500,000 Hz.
2019-10-20 20:38:55 -04:00
Thomas Harte
374439693e
Ensures serial lines know their writer's clock rate.
2019-10-20 20:38:55 -04:00
Thomas Harte
c4ef33b23f
JustInTimeActors can now specify a clock divider.
2019-10-20 20:38:55 -04:00
Thomas Harte
4e5b440145
Attempts mostly to implement 6850 output.
2019-10-20 20:38:55 -04:00
Thomas Harte
97d44129cb
Ensures all 16 data lines reach the video.
2019-10-20 20:38:55 -04:00
Thomas Harte
b0f5f7bd37
Attempts to start producing actual video.
2019-10-20 20:38:55 -04:00
Thomas Harte
a59ec9e818
Provides a token something where DMA should be.
2019-10-20 20:38:55 -04:00
Thomas Harte
4ead905c3c
Adds an empty shell for the ACIA.
2019-10-20 20:38:55 -04:00
Thomas Harte
127bb043e7
Adds enough logic to advance to an ACIA access error.
2019-10-20 20:38:55 -04:00
Thomas Harte
42ebe06474
Makes an attempt at tracking video sequence points.
2019-10-20 20:38:55 -04:00
Thomas Harte
74fe32da23
Takes a shot at other display outputs.
2019-10-20 20:38:55 -04:00
Thomas Harte
780916551f
Corrects sync generation.
2019-10-20 20:38:54 -04:00
Thomas Harte
305b1211ba
Makes a first attempt to box out the ST display area.
2019-10-20 20:38:54 -04:00
Thomas Harte
2cf52fb89c
Makes an unsuccessful first attempt at some timer functionality.
2019-10-20 20:38:54 -04:00
Thomas Harte
6e1b606adf
Adds a target for MFP read/write operations.
...
Completely without any implementation, so far.
2019-10-20 20:38:54 -04:00
Thomas Harte
3bb0bf9e14
Adds some semblance of an AY.
2019-10-20 20:38:54 -04:00
Thomas Harte
87a6d22894
Starts to formalise the ST memory map a little.
2019-10-20 20:38:54 -04:00
Thomas Harte
484a0ceeb8
Starts forming an Atari ST memory map.
2019-10-20 20:38:54 -04:00
Thomas Harte
da1436abd2
Gifts the Atari ST a 68000 and non-functional video.
2019-10-20 20:38:54 -04:00
Thomas Harte
125f781ced
Starts to create an actual shell of a machine.
2019-10-20 20:38:54 -04:00
Thomas Harte
8b397626bf
Adds a route through the static analyser to the Atari ST.
2019-10-20 20:38:54 -04:00
Thomas Harte
0da1881a07
Adds an Atari ST enumeration and factory method.
2019-10-20 20:38:54 -04:00
Thomas Harte
95c45b5515
This can be const.
2019-10-20 17:22:56 -04:00
Thomas Harte
735586f5f8
Corrects tabs; adds potential output_border optimisation.
2019-10-19 21:20:34 -04:00
Thomas Harte
3c146a3fb2
Adds missing Master System enumerations.
2019-09-30 21:10:30 -04:00
Thomas Harte
4ac3839185
Seeks to ensure that card transitions between real-time and just-in-time don't break timing.
2019-09-28 18:34:04 -04:00
Thomas Harte
fbf95ec2b8
Removes the now empty local namespace.
2019-09-24 22:48:47 -04:00
Thomas Harte
077c7d767f
Shifts essential modifiers up to the Keyboard class.
...
I had forgotten that mappers are not exposed.
2019-09-22 13:48:50 -04:00
Thomas Harte
a416bc0058
Adds an interface allowing keyboard mappers to declare modifiers that are 'essential'.
...
i.e. ones that, if not delivered reliably, will cause the related machine to behave unexpectedly.
2019-09-22 13:14:09 -04:00
Thomas Harte
5f16fa8c08
Removes dead reference to video from VIAPortHandler.
2019-09-21 17:39:45 -04:00
Thomas Harte
e7bf0799b6
Implements every-other-cycle-during-pixels RAM timing.
2019-09-21 17:25:20 -04:00
Thomas Harte
2e24da4614
Implements quick booting, and edges towards exposing it on the Mac.
...
It should already work in kiosk mode.
2019-09-19 22:32:12 -04:00
Thomas Harte
e46601872b
Establishes that the Macintosh offers the quick-boot option.
2019-09-19 21:50:39 -04:00
Thomas Harte
776b819a5a
Adds the SCSI bus as an Activity::Source.
2019-09-19 19:31:22 -04:00
Thomas Harte
962275c22a
Removes clock for NCR 5380.
...
It doesn't have one in real life, and now can live off the time counting that occurs on the SCSI bus.
2019-09-18 20:17:47 -04:00
Thomas Harte
243e40cd79
Adds signalling of DACK.
2019-09-14 13:48:33 -04:00
Thomas Harte
1c7e0f3c9d
Fixes control line modification by the 5380 and SCSI target command chaining.
...
So now I'm back to trying to guess how a SCSI command terminates re: the relative meanings of a message phase and a status phase.
2019-09-02 23:14:37 -04:00
Thomas Harte
318cdb41ea
Adds SCSI bus clocking to the Macintosh, and fixes its internal counting.
2019-09-02 16:03:33 -04:00
Thomas Harte
2f8e31bc8b
Takes a first bash at implementing the new SCSI::Bus timing infrastructure.
2019-09-02 13:00:01 -04:00
