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1877 Commits

Author SHA1 Message Date
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
Thomas Harte
1a60ced61b Starts trying to deal with creating a whole volume from merely a partition. 2019-08-25 23:03:54 -04:00
Thomas Harte
ca08716c52 Introduces real hard disk images to the nascent world of SCSI. 2019-08-25 17:03:41 -04:00
Thomas Harte
90cf99b626 Takes a wild swings at speeding up startup. 
With no success.
 2019-08-18 22:40:16 -04:00
Thomas Harte
f668e4a54c Makes an attempt at getting the 5380 past arbitration. 
Not entirely successful. Also gets a bit smarter with `final` on ClockingHint::Sources.
 2019-08-15 23:14:40 -04:00
Thomas Harte
0f67e490e8 Adjusts NCR address decoding to produce a more plausible initial interaction. 2019-08-11 22:43:25 -04:00
Thomas Harte
895c315fa5 Increases the Mac Plus too 4mb. 2019-08-11 21:41:12 -04:00
Thomas Harte
a90a74a512 Stubs in just enough of the 5380 to get a Mac Plus too boot. 2019-08-11 20:55:20 -04:00
Thomas Harte
bbd4e4d3dc Enhances memory map fidelity to allow for ROM holes on the Mac Plus. 
This is how the ROM detects the difference between the Plus and the 512ke, it seems.
 2019-08-10 23:53:34 -04:00
Thomas Harte
bac0461f7f Switches the drive-speed accumulator to the delegate pattern. 
This allows the Macintosh to ensure that the IWM is kept up just-in-time with drive speed changes.
 2019-08-07 21:39:23 -04:00
Thomas Harte
f26a200d78 Switches to a JustInTimeActor to wrap the IWM. 
Also simplifies potential future usage of the IWM template.
 2019-08-07 21:28:02 -04:00
Thomas Harte
0e293e4983 Relocates RAM delay test in order to scrape out a minor performance win. 2019-08-03 21:46:45 -04:00
Thomas Harte
478f2533b5 Corrects 68000 address bus during interrupt acknowledge. 
All unused bits should be 1, not 0.
 2019-08-03 15:38:36 -04:00
Thomas Harte
a07488cf1b Introduces the Mac Plus memory map. 
Albeit with no SCSI support yet.
 2019-08-02 22:26:40 -04:00
Thomas Harte
d67c5145c0 Introduces RAM access delays. 2019-08-02 22:12:34 -04:00
Thomas Harte
5e76d593af Switches to table-based address decoding. 2019-08-02 21:30:04 -04:00
Thomas Harte
b93f9b3973 Distinguishes time advancement from bus response. 2019-08-02 19:48:41 -04:00
Thomas Harte
96005261c7 Adds activity lights for Macintosh disk activity. 
Prompting a quick fix to drives not spinning down.
 2019-08-02 16:26:23 -04:00
Thomas Harte
c8177af45a Introduces missing implementation file. 2019-08-02 16:26:08 -04:00
Thomas Harte
97eff5b16d Formally distinguishes Macintosh keys from virtual keys. 
Also: adds mappings for keypad keys, and corrects a couple of
long-standing capitalisation errors in my virtual key set.
 2019-08-02 16:15:34 -04:00
Thomas Harte
9bbccd89d3 Adds an extended rationale for current implementation. 
Also strips some cruft of prior guesses.
 2019-07-31 23:19:46 -04:00
Thomas Harte
260843e5b1 Starts poking at a pure total-based formula. 
On the assumption that any relevant DC offset will fall out in the wash. This causes one 400kb disk to boot in a Macintosh 128kb, another couple to do reasonably well. So it's better than what was here before.
 2019-07-31 12:42:23 -04:00
Thomas Harte
e3f22e5787 This should actually be PWM, I think. 
I'm just unsure of exactly the proper formula, owing to my ignorance on basic electrical engineering. Research ahoy!
 2019-07-30 22:02:41 -04:00
Thomas Harte
2aa308efdd Tweaks magic formulas. 
The computer now at least seeks outward, until this attempt at drive speed calculation fails.
 2019-07-30 16:18:36 -04:00
Thomas Harte
74c18d7861 Attempts a full wiring up of 400kb drive speed. 2019-07-30 15:08:55 -04:00
Thomas Harte
f3dd4b028d Rolls out JustInTime acting to the MSX and ColecoVision. 2019-07-29 21:22:31 -04:00
Thomas Harte
9859f99513 Adds a route to not bumping time. 2019-07-29 17:21:27 -04:00
Thomas Harte
a43ada82b2 Experiments with a JustInTimeActor in the Master System. 2019-07-29 15:38:41 -04:00
Thomas Harte
5149f290d0 Starts trying to formalise just-in-time execution. 
Which, at least, simplifies Cycle/HalfCycle to Cycle run_for usage via template.
 2019-07-28 21:49:54 -04:00
Thomas Harte
f894d43111 Removes the video and audio base address latches. 
It now seems to me that these take effect immediately.
 2019-07-27 22:23:40 -04:00
Thomas Harte
d8bc20b1ab Ensures quieter Release behaviour. 2019-07-25 22:55:27 -04:00
Thomas Harte
109d5d16bd Withdraws optimisation, for further testing in the future. 2019-07-25 10:33:38 -04:00
Thomas Harte
1672dc5946 Reduces frequency of update_video() calls. 2019-07-25 10:14:52 -04:00
Thomas Harte
0469f0240b Moves interrupt level selection outside the loop. 2019-07-23 23:13:03 -04:00
Thomas Harte
fcee7779b0 Inserts missing spaces. 2019-07-22 23:11:37 -04:00
Thomas Harte
b4191b6225 Corrects DiskII boot ROM CRCs and improves corresponding declarations. 2019-07-22 23:07:23 -04:00
Thomas Harte
dbee37ab34 Provides extended ROM details for the VIC-20 and Oric. 2019-07-22 22:15:44 -04:00
Thomas Harte
2432151bf8 Puts machine name into ROMMachine::ROM. 
Also switches to idiomatic exit codes.
 2019-07-22 21:14:21 -04:00
Thomas Harte
b2a6682798 Adds extended ROM information for the ZX80 and '81. 2019-07-20 22:46:49 -04:00
Thomas Harte
f3aac603f8 Adds extended Introduces extended ROM details for the C1540, Electron, Master System and MSX. 2019-07-20 21:30:37 -04:00
Thomas Harte
712cb473f7 Adds extended ROM information for the CPC and ColecoVision. 2019-07-20 17:07:59 -04:00
Thomas Harte
3c68a5ca65 Enhances the amount of ROM information posted by the Apple machines. 2019-07-20 16:08:40 -04:00
Thomas Harte
20670bab2f Expands information included in ROM load requests. 2019-07-19 22:35:22 -04:00
Thomas Harte
b9a34bee51 Substitutes a more efficient inner loop for audio generation. 2019-07-17 14:54:06 -04:00
Thomas Harte
22ee51c12c Corrects clocking issues around audio, and cuts down queue costs. 2019-07-17 14:41:36 -04:00
Thomas Harte
59b5dfddec Added logic to allow a second disk to be inserted, at least. 2019-07-11 23:03:02 -04:00
Thomas Harte
cac97a9663 Devolves drive responsibility. 2019-07-10 22:39:56 -04:00
Thomas Harte
2ccb564a7b Throws some extra logging into place, to test the IWM changeover. 2019-07-10 21:39:45 -04:00
Thomas Harte
d1d0430fce Eliminates the SonyDrive class. 2019-07-10 17:38:05 -04:00
Thomas Harte
be251d6b03 Begins substituting the DoubleDensityDrive for the Sony. 2019-07-10 16:24:48 -04:00
Thomas Harte
c4ab0bb867 Starts sketching out an interface for IWM drives, eliminating a dangling use of unsigned as it goes. 2019-07-10 16:05:59 -04:00
Thomas Harte
886946cc8c Rejigs time-until-event tracking. 2019-07-09 23:27:27 -04:00
Thomas Harte
ed4ddcfda8 Reduces call/return overhead on Microcycle methods. 2019-07-09 19:55:30 -04:00
Thomas Harte
7886cd63bd Flattens the Macintosh's perform_bus_operation, for legibility. 2019-07-09 19:49:06 -04:00
Thomas Harte
b4a3f66773 Restores just-in-time processing of video. 2019-07-09 18:08:07 -04:00
Thomas Harte
52e96e3d2a Documents and extends the Video interface. 
With the intention of returning it soon to JIT execution.
 2019-07-08 22:28:05 -04:00
Thomas Harte
1a9aa60bf7 Ensures no compiler will think this can exit without returning. 2019-07-08 18:13:23 -04:00
Thomas Harte
793c2df7ee Fixes keypad keys. 2019-07-08 16:38:06 -04:00
Thomas Harte
28de629c08 Fixes the 6522 sufficiently to fix keyboard input. 2019-07-08 15:29:34 -04:00
Thomas Harte
d7329c1bdd Experiments with a timeout on keyboard interactions. 2019-07-07 14:13:55 -04:00
Thomas Harte
96c0253ee2 Fixes mouse input when a button is pressed; attempts keyboard input. 
I think the VIA is somehow sending spurious commands.
 2019-07-02 21:14:33 -04:00
Thomas Harte
191a7a9386 Reintroduces an empty second drive. 
This prevents the uninitialised disk error. Which is a clue.
 2019-07-02 16:59:00 -04:00
Thomas Harte
fffe6ed2df Chops the Macintosh down to a single drive to aid in development. 2019-07-02 13:59:30 -04:00
Thomas Harte
6c588a1510 Makes some further random swings at tracking the startup procedure. 2019-06-28 13:03:47 -04:00
Thomas Harte
d81053ea38 Invents some additional PEA tests, and further fixes PEA. 2019-06-27 17:59:03 -04:00
Thomas Harte
506276a2bd Corrected: use format tag as intended. 2019-06-18 14:04:28 -04:00
Thomas Harte
00c32e4b59 Further miscellaneous changes to debug logging. All temporary. 2019-06-18 10:34:31 -04:00
Thomas Harte
877b46d2c1 Advances IWM/drive emulation very close to the point of 'Welcome to Macintosh'. 2019-06-15 16:08:54 -04:00
Thomas Harte
bde975a3b9 Possibly mights the tiniest bit of headway with 'the IWM'. 
I'm now pretty sure that my 3.5" drive, which for now is implemented in the IWM (yuck) is just responding to queries incorrectly.
 2019-06-13 22:38:09 -04:00
Thomas Harte
f6f9024631 Corrects Macintosh aspect ratio (and framing). 2019-06-13 18:41:38 -04:00
Thomas Harte
5630141ad7 Ensures randomised memory contents at startup. 2019-06-13 13:35:16 -04:00
Thomas Harte
d6150645c0 By hook or by crook, mouse input now works. 2019-06-12 22:19:25 -04:00
Thomas Harte
ccd2cb44a2 Fills in enough of the SCC to allow completion of the Macintosh side of that relationship. 2019-06-12 17:51:50 -04:00
Thomas Harte
c8066b01b6 Restores attempt at proper audio behaviour. 2019-06-11 19:53:22 -04:00
Thomas Harte
ebd59f4dd3 Performs the trivial part of wiring up the Macintosh mouse. 
SCC still to go.
 2019-06-11 19:52:37 -04:00
Thomas Harte
109953ef49 Ensures proper routing of mouse events from Cocoa. 2019-06-11 18:41:41 -04:00
Thomas Harte
124c7bcbb0 Makes the Macintosh a mouse machine, and makes mouse machines detectable. 2019-06-11 18:21:56 -04:00
Thomas Harte
a0321aa6ff Starts sketching out an emulator interface for mice. 2019-06-11 17:47:24 -04:00
Thomas Harte
9230969f43 Corrects enough of the 6522 and Keyboard to get an initial command seemingly working. 2019-06-10 09:28:27 -04:00
Thomas Harte
697e094a4e Sketches out the absolute basics of an SCC interface. 2019-06-08 18:47:11 -04:00
Thomas Harte
7591906777 Numerous IWM fixes: the machine now seems to be trying to measure the tachometer. 2019-06-06 18:32:11 -04:00
Thomas Harte
a413ae11cb Makes some sort of first attempt at having the IWM read. 2019-06-04 22:13:00 -04:00
Thomas Harte
833258f3d7 Sets things up to allow variable rotation rates, and especially Sony 800kb-style self-selecting rates. 2019-06-04 21:41:54 -04:00
Thomas Harte
661fe1e649 Disables logging, for now. 2019-06-03 15:57:53 -04:00
Thomas Harte
85298319fa Expands towards supporting multiple Macintosh models. 
To provide another variable to help with bug isolation.
 2019-06-03 14:50:36 -04:00
Thomas Harte
881feb1bd3 Adds preliminary parsing of the Disk Copy 4.2 format. 2019-06-02 13:39:25 -04:00
Thomas Harte
3e9fa63799 Adds a receiver for drive-motor control bytes. 
My new belief is that I'm either reading the buffer from the wrong place, or the 68000 isn't filling it for some reason.
 2019-06-01 19:31:32 -04:00
Thomas Harte
983407896c Ensures consistent audio pipeline. 2019-06-01 17:29:57 -04:00
Thomas Harte
5c08bb810e In theory provides a full implementation of audio. 
Albeit seemingly ineffective.
 2019-06-01 15:44:29 -04:00
Thomas Harte
17635da812 Pushes Mac audio further towards being able to function. 2019-06-01 15:18:27 -04:00
Thomas Harte
6d985866ee All proper inputs are now provided to the audio generator. 
Hopefully. The next job is to generate audio. If that sounds correct, then the disk motor speed question can be tackled.
 2019-06-01 15:03:15 -04:00
Thomas Harte
723137c0d4 With some time additions to the 6522, starts wiring in Macintosh audio. 
The audio buffer is also the disk motor buffer, so this is preparatory to further disk work.
 2019-06-01 14:39:40 -04:00
Thomas Harte
4632be4fe5 Wires up the final IWM signal, SEL, preparatory to an implementation. 2019-05-30 12:08:00 -04:00
Thomas Harte
0848fc7e03 Ensures the Mac uses auto vectored interrupts. 2019-05-28 16:24:41 -04:00
Thomas Harte
5e2496d59c Simplifies and corrects MOVE logic. 2019-05-28 15:17:03 -04:00
Thomas Harte
1d3dde32f2 Ensures final byte of data can be accessed. 2019-05-09 07:24:26 -04:00
Thomas Harte
41740fb45e Implements video position feedback. 
At a substantial performance cost for now, but I'll worry about that once things are working.
 2019-05-08 16:54:19 -04:00
Thomas Harte
0ad88508f7 Removes ROM mirroring above $600000. 2019-05-08 15:07:03 -04:00
Thomas Harte
8b72043f33 Ensures no uninitialised variables. 2019-05-08 14:54:54 -04:00
Thomas Harte
f0f9722ca6 Takes a first crack at the keyboard's serial protocol. 
Albeit that without a working shift register in the VIA, this shouldn't really work yet.
 2019-05-08 14:20:28 -04:00
Thomas Harte
b5ef88902b Edges further towards a functioning keyboard. 2019-05-08 13:58:52 -04:00
Thomas Harte
7b466e6d0a Begins work on a functioning keyboard. 2019-05-08 12:34:26 -04:00
Thomas Harte
7e6d4f5a3e Adds emulation of the real-time clock. 2019-05-08 00:12:19 -04:00
Thomas Harte
ce099a297a Eliminates RAM writes in ROM area. 
I no longer think that logic is correct.
 2019-05-07 17:16:22 -04:00
Thomas Harte
949c848815 Broadens address decoding. 
To no obvious change in output.
 2019-05-06 22:57:29 -04:00
Thomas Harte
9bf9b9ea8c Ensures unmapped peripherals return a consistent value. 2019-05-06 21:32:10 -04:00
Thomas Harte
a131d39451 I now believe only the 6522 is on the synchronous bus. 2019-05-06 14:10:13 -04:00
Thomas Harte
b540f58457 Sets a more appropriate display type. 2019-05-05 23:22:05 -04:00
Thomas Harte
4f5a38b5c5 Adds support for the alternate video buffer. 2019-05-05 23:05:24 -04:00
Thomas Harte
cefc3af08b Corrects RAM read decoding when the ROM overlay is enabled. 2019-05-05 22:48:40 -04:00
Thomas Harte
96facc103a Adds an IWM shim and corrects graphics output. 
... now that there is some.
 2019-05-05 21:55:34 -04:00
Thomas Harte
407bbfb379 Pretending the Disk II is an IWM doesn't seem to achieve much. 2019-05-05 18:12:25 -04:00
Thomas Harte
a99ebda513 Takes a first shot at (inverted) Mac video output. 2019-05-04 22:27:58 -04:00
Thomas Harte
537b604fc9 It looks like writes should always go to RAM. 
Now I see the screen buffer being filled with `0xffff`s, along with what is probably disk motor control data.
 2019-05-04 17:29:30 -04:00
Thomas Harte
98bc570bf7 Adds further boilerplate around VIA and IWM decoding. 2019-05-04 17:12:26 -04:00
Thomas Harte
181b77c490 Adds decoding of IWM accesses and respect for the ROM overlay bit. 2019-05-04 16:38:01 -04:00
Thomas Harte
bc9eb82e6f Adds in VIA access decoding, and a note to self on video. 
The Mac now proceeds to try to talk to the IWM.
 2019-05-04 14:23:37 -04:00
Thomas Harte
29fc024ecd Starts negotiating the Macintosh memory map. 2019-05-04 12:33:27 -04:00
Thomas Harte
c1695d0910 Adds various notes to self. 2019-05-03 23:55:28 -04:00
Thomas Harte
6d6a4e79c9 Adds the absolute basics to include a 6522 in the Macintosh. 
Not yet wired to anything.
 2019-05-03 23:40:22 -04:00
Thomas Harte
68392ce6f5 Adds enough of a concept of Mac video to get a properly initialised display. 
Completely empty at present, naturally. Also this is the very first time I've run my 68000 at live speed. From just one data point, it's not terrible. Phew!
 2019-05-03 23:25:42 -04:00
Thomas Harte
6873f62ad8 Ensures that the Mac now retains its ROM properly. 2019-05-03 22:39:09 -04:00
Thomas Harte
5f385e15f6 Adds the bare bones necessary to be able to create a Macintosh from File -> New... . 2019-05-03 22:16:07 -04:00
Thomas Harte
8c5d37b6ee Refactors the AppleII into a sub-namespace to make room for other Apple machines. 2019-05-03 18:14:10 -04:00
Thomas Harte
3cb042a49d Corrects the carry and extend flags for various long-word operations. 2019-04-21 22:08:18 -04:00
Thomas Harte
c0861c7362 Removes hard-coded assumption about disk ROM list placement. 2019-04-16 11:22:03 -04:00
Thomas Harte
c11a1f9679 Introduces S-Video support for the ColecoVision. 2019-03-02 23:02:37 -05:00
Thomas Harte
d97348dd38 Eliminates dangling uses of printf. 2019-03-02 18:07:05 -05:00
Thomas Harte
e1ebb7ce9c Ensures no attempt to call nullptr. 2019-03-02 17:37:56 -05:00
Thomas Harte
d5b4ddd9e5 Simplifies use_fast_tape_ logic. 2019-03-02 14:54:26 -05:00
Thomas Harte
ef085e3f93 MSX: introduces a tape motor LED, and limits the fast-tape hack to the BIOS. 2019-03-01 18:49:21 -05:00
Thomas Harte
3862a93ff9 Removes mapping of the equals key to break. 
... because I keep pressing it by accident.
 2019-02-28 21:47:12 -05:00
Thomas Harte
816ad0a94c Introduces region support to the MSX. 2019-02-28 20:54:43 -05:00
Thomas Harte
0536697d8f Corrects scope of delay. 2019-02-28 18:46:28 -05:00
Thomas Harte
0dbd8a667d Corrects delay for SN access. 2019-02-27 22:58:43 -05:00
Thomas Harte
d2da55aa03 Adds a single-cycle M1 delay to the ColecoVision. 2019-02-27 22:01:30 -05:00
Thomas Harte
c7c21a7e2c Sorry, ColecoVision, it's composite only for you. 2019-02-24 22:37:24 -05:00
Thomas Harte
16731661e8 Switches back to being explicit about the colour burst phase. 
Some sort of phase inversion otherwise seems to be achievable by software that switch modes often.
 2019-02-24 22:28:11 -05:00
Thomas Harte
d4134cd0d8 Restores proper colour phase to the Apple II. 
Given that its timing errors were fixed, this also switches back to using 'default' colour bursts — i.e. ones with implicit phase. The Apple II continues to be an excellent bellwether for issues in the pipeline, and this helps further to ensure that.
 2019-02-24 14:35:13 -05:00
Thomas Harte
d0b967ce53 Corrects typo; disables original colour ROM usage for now. 2019-02-18 20:49:54 -05:00
Thomas Harte
ac8d43cc4a Improves use of const. 2019-02-18 20:21:41 -05:00
Thomas Harte
40ee215b1b By #define provides a means not to use the real composite samples. 
To aid with debugging.
 2019-02-18 17:20:52 -05:00
Thomas Harte
6c1d94beaa Adds composite monochrome output for the Oric. At least temporarily. 2019-02-18 16:56:48 -05:00
Thomas Harte
7939897622 Fixes announced timing difference between pixel and border lines. 
The Apple II sync fault is now fixed!
 2019-02-12 22:32:02 -05:00
Thomas Harte
3e0b5433b9 Institutes colour/monochrome screen selection as an Apple II option. 
Allowing me to test that straight-through composite still works.
 2019-02-12 19:52:32 -05:00
Thomas Harte
75987f64ec Restores Oric audio. 2019-02-05 21:42:39 -05:00
Thomas Harte
097bc7055e Adds a default selection, for invalid models. 2019-01-25 19:31:44 -05:00
Thomas Harte
6c49953115 Returns gamma correction, and corrects Amstrad CPC brightness. 2019-01-14 22:56:08 -05:00
Thomas Harte
2ef6d4327c Resolves further build warnings. 2019-01-13 20:37:50 -05:00
Thomas Harte
cc95e587db Adds virtual destructors for various interface classes. 2019-01-13 19:19:01 -05:00
Thomas Harte
ccb52fb625 Ensures no writes to pixel_pointer_ when allocation has failed. 2019-01-11 22:00:44 -05:00
Thomas Harte
601961deeb Wires through set_display_type. 2018-11-29 20:44:21 -08:00
Thomas Harte
b723740f64 Improves PAL colours. 2018-11-29 19:12:20 -08:00
Thomas Harte
6be46ae921 Mostly restores Atari 2600 output. PAL colours need work. 2018-11-29 18:26:05 -08:00
Thomas Harte
a25470ee41 Permits tweaking of PhaseLinkedLuminance8 sampling offset. 2018-11-29 16:29:28 -08:00
Thomas Harte
fd579a019b Introduces a new scan source data type, motivated by the reasoning used by the Oric. 
Specifically: it'll allow PCM sampling of the potentially arbitrary composite generation logic of various machines.
 2018-11-28 20:40:22 -08:00
Thomas Harte
e39ecf59ef Restores RGB mode to the Oric. More thought required for composite. 2018-11-28 18:40:43 -08:00
Thomas Harte
5f90941e4e Starts nudging the Oric back to functionality under the new regime. 
i.e. one where it can't invent internal pixel formats.
 2018-11-28 18:16:13 -08:00
Thomas Harte
64465f97b6 Starts towards reintroducing the proper mechanisms for selecting a display type at runtime. 2018-11-28 17:53:33 -08:00
Thomas Harte
aa22af6f05 Corrects regression in VDP type selection. 2018-11-26 22:40:01 -05:00
Thomas Harte
a6383247fc Attempts further to ensure proper CRT signalling. 2018-11-26 22:36:22 -05:00
Thomas Harte
b69ac4ec2f Ensures video stability is no longer affected by transient allocation failures. 2018-11-25 22:04:04 -05:00
Thomas Harte
f4764ea680 Fixes divider. 2018-11-24 16:56:41 -05:00
Thomas Harte
ee89be6730 Removes many stray spaces. 2018-11-23 22:32:32 -05:00
Thomas Harte
770d7e90e9 Removes stale sampling functions. 2018-11-22 22:47:29 -05:00
Thomas Harte
b9aca39eb0 Reintroduces Vic-20 output. 
Resolving errors in shader generation while I'm here.
 2018-11-22 22:43:42 -05:00
Thomas Harte
5a31891048 Returns Amstrad CPC output. 
Which is probably it until I get some more composite processing back in.
 2018-11-15 21:32:22 -05:00
Thomas Harte
8b37496447 Restores video output to the Master System. 2018-11-15 21:21:54 -05:00
Thomas Harte
8f6664f0d7 Starts towards picking an input shader based on data type and pipeline. 2018-11-15 21:02:46 -05:00
Thomas Harte
3eab1f8f7c Removes a little cruft. 2018-11-14 22:26:31 -05:00
Thomas Harte
9dff13cbbf Re-establishes output from the machines with 9918s and derivatives. 2018-11-14 22:25:19 -05:00
Thomas Harte
a47de9a884 Returns the Apple II to submitting video. 2018-11-14 22:04:57 -05:00
Thomas Harte
8a699b6072 Kills setup_output definitively, saving some indirection. set_scan_target takes its place. 2018-11-14 21:52:57 -05:00
Thomas Harte
6d277fecd5 Makes ScanTarget a little more communicative and orthogonal. 2018-11-10 19:52:57 -05:00
Thomas Harte
55da1e9c0f Simplifies semantics a little and starts accepting a single buffer of pixel data. 2018-11-06 22:23:38 -05:00
Thomas Harte
014da41471 Ensures scan positions are communicated with a specified range, and switches manner of pixel clock communication. 2018-11-04 21:06:25 -05:00
Thomas Harte
f6562de325 Possibly adds enough for the Electron and ZX80 to start outputting dummy lines. 
Let's see!
 2018-11-03 23:40:39 -04:00
Thomas Harte
b40211d2c0 Starts to bend 'CRTMachine' to a world farther from owning the GPU relationship. 2018-11-03 21:54:25 -04:00
Thomas Harte
da4d883321 Adds first, incomplete attempts to talk to a ScanTarget from the CRT. 
Does away with the hassle of `unsigned` while I'm here; that was a schoolboy error.
 2018-11-03 19:58:44 -04:00
Thomas Harte
d1fc39d6e5 Attempts to carry on even if no BIOS is found. 2018-10-26 21:19:16 -04:00
Thomas Harte
a8645f80bf Introduces 'non-exclusive' emulator-space keyboards. 
i.e. sets of keys that don't amount to an entire keyboard in the modern sense. Experimentally used by the Master System for its reset key.
 2018-10-24 21:59:30 -04:00
Thomas Harte
e3fd63b2d7 Adds composite/RGB selection for the Master System. 2018-10-23 22:30:24 -04:00
Thomas Harte
00e7958a97 Separates request for an SMS2 VDP from current graphics mode. 
Thereby fixes various minor segments of Codemasters games.
 2018-10-23 22:19:45 -04:00
Thomas Harte
0822c96ce0 Implements the proper row counter values for > 192 row modes. 2018-10-19 22:37:56 -04:00
Thomas Harte
f49718e94b Ensures Codemasters games have the proper initial state. 2018-10-19 22:10:14 -04:00
Thomas Harte
6fff514901 Honours the region by implementing Japanese (no BIOS) and European (PAL) paths. 2018-10-19 21:37:05 -04:00
Thomas Harte
c365cca38a Makes order of operations explicit. 2018-10-18 22:37:04 -04:00
Thomas Harte
10d9cbdeb1 Adds an extra LOG to track the memory map as a potential cause of emulation failure. 2018-10-18 21:48:37 -04:00
Thomas Harte
57f03e660c Ensures console output only in debug builds. 2018-10-18 21:16:56 -04:00
Thomas Harte
6a2db52adb Ensures safe Megacart cartridge sizes too. 2018-10-18 21:09:05 -04:00
Thomas Harte
34e13d0d4d Clears top bit when reading the keypad and ensures no undefined behaviour reading the cartridge. 2018-10-18 21:05:58 -04:00
Thomas Harte
0278d5b61c Restores SG1000 compatibility. 2018-10-18 19:13:15 -04:00
Thomas Harte
52e02db5c8 Introduces horizontal counter latching and reading. 
Then makes a new guess at frame IRQ position. But gets it wrong. Hmmm.
 2018-10-11 19:56:32 -04:00
Thomas Harte
24644f1dd1 Adds a low-pass filter, picked entirely by ear, and switches to composite output, at least for now. 2018-10-07 18:39:03 -04:00
Thomas Harte
76f3b9f6ba Fixed: paging writes don't obstruct RAM. 2018-10-06 14:26:00 -04:00
Thomas Harte
7830cda912 Implements line querying and most of line interrupts. 2018-10-04 22:50:35 -04:00
Thomas Harte
e9328d819e Switches to RGB output, at least for development. 2018-09-30 20:47:03 -04:00
Thomas Harte
2e4c4c3e91 Makes some attempt to implement paging. 
This causes several of the 32kb games to be recognised by the BIOS and permitted to start, so it really really may be time to stop deferring work on the VDP.
 2018-09-24 21:34:42 -04:00
Thomas Harte
7515fa8a98 Ensures the SG1000 gets an unadulterated TMS and SN. 2018-09-23 22:24:29 -04:00
Thomas Harte
5b9e7213dd Adds a couple of joystick inputs. 
SG1000 titles all seem to work now.
 2018-09-23 21:55:07 -04:00
Thomas Harte
2253341904 This now goes far enough for the only SG1000 game I'm testing to start up. 
Which hopefully gives me as much as I need to implement joypads, etc, and definitively get to just the VDP being outstanding.
 2018-09-23 17:42:42 -04:00
Thomas Harte
e155dc8d6e Adds fairly standard memory map indirection. 2018-09-23 17:36:30 -04:00
Thomas Harte
00b2db4fb9 Ensures the Master System is informed when it should pretend to be an SG1000. 2018-09-23 16:34:47 -04:00
Thomas Harte
f59386f523 Adds just enough input logic that the Sega sound now plays. 2018-09-23 16:05:37 -04:00
Thomas Harte
38a1fde3bf Attempts to permit Master System interrupts. 2018-09-23 00:07:46 -04:00
Thomas Harte
40c7a63fb5 Makes a first attempt at Master System IO decoding. 2018-09-22 23:45:29 -04:00
Thomas Harte
d9e65cd758 Ensures neither the ColecoVision nor the MSX processes mid-cycles. 2018-09-21 22:53:35 -04:00
Thomas Harte
e511261b04 Adds a Master System class, so that SMSs can end up somewhere. 2018-09-21 22:13:07 -04:00
Thomas Harte
0d01346ad4 Advertises SMS support and goes as far as realising it needs to spawn a Master System. 2018-09-20 22:04:28 -04:00
Thomas Harte
e7f4babf41 Starts taking steps towards SMS/GG and V9938/9958 support. 
Specifically: routine namespace stuff, plus the intention to move to a table-based operation+cost version of timing. Reordering works fine for the TMS, and probably would also for the SMS/GG, but it'd be problematic with the command engine of the V9938/9958 and maintaining a consistent set of code is easier.
 2018-09-17 22:59:16 -04:00
Thomas Harte
a8b116e217 Turns down the Apple II brightness a little. 
So that light blue is more like a blue.
 2018-09-17 20:08:20 -04:00
Thomas Harte
868cd5cb09 Improves alignment request. 2018-09-12 20:27:02 -04:00
Thomas Harte
dec18d9acc Restores full pixel output to the Electron. 2018-09-12 20:25:30 -04:00
Thomas Harte
a7508bc2ae Switching explicitly to one pixel per sample eliminates the need for a bookender. 2018-09-12 20:11:17 -04:00
Thomas Harte
a38639d099 Eliminates the concept of an iCoordinate. 
Real-life precision appears not to support the idea of sub-sample pixel storage.
 2018-09-12 20:05:39 -04:00
Thomas Harte
c6e94bc2a6 Adds missing #include. 2018-09-11 21:55:03 -04:00