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2287 Commits

Author SHA1 Message Date
Thomas Harte
f9cec9a102 Attempts also to implement 1Mhz access costs. 
Subject to TODO, and same observation as before: this is as to my current understanding only.
 2020-11-14 19:23:01 -05:00
Thomas Harte
adda3d8f42 Attempts a 'full' model of 2.8Mhz access timing. 
i.e. full to my current understanding.
 2020-11-14 19:10:41 -05:00
Thomas Harte
ec3ff0da12 Steps towards proper calculation of time. 2020-11-14 18:39:16 -05:00
Thomas Harte
73c38b3b0d Collapses nested conditionals. 2020-11-14 18:23:31 -05:00
Thomas Harte
edc8050b36 Adds activity indicators. 2020-11-14 18:00:06 -05:00
Thomas Harte
715a1b9cd6 Ensures safe shutdown. 2020-11-12 21:44:51 -05:00
Thomas Harte
86310849eb Corrects IWM clocking. 2020-11-12 18:09:31 -05:00
Thomas Harte
a2a928e262 Takes a guess at the format of IIgs .po files; wires them through to the actual machine. 
... which still declines to boot.
 2020-11-12 18:01:26 -05:00
Thomas Harte
3813e00ca3 Adds the Apple II toggle speaker. 2020-11-11 21:04:38 -05:00
Thomas Harte
5698aa6499 Corrects colour mapping and improves documentation for self. 2020-11-11 20:41:30 -05:00
Thomas Harte
a15af1df5e Attempts to use the other bit of disk drive control, the 5.25"/3.5" select. 
For the record, the ROM thinks it finds some Smartport devices and then attempts to talk to them. Since none is present, it blocks forever.
 2020-11-11 17:55:50 -05:00
Thomas Harte
da9e378ab1 Quietens, for now. 2020-11-11 17:53:21 -05:00
Thomas Harte
8024bbd721 Provides minor extra detail. 2020-11-11 17:08:56 -05:00
Thomas Harte
ece9382a4e Also attaches IWM select line. 2020-11-10 18:59:23 -05:00
Thomas Harte
6ba517a4c1 Applies a will-do-for-now crop to video output. 2020-11-10 18:50:23 -05:00
Thomas Harte
20fd5adb24 Makes a first effort at attaching an IWM. 2020-11-10 18:38:23 -05:00
Thomas Harte
abb350ff5b Stubs in audio toggle and disk control. 
It appears that ROM 01 now fails because reading the disk interface register doesn't do as expected. ROM 03 starts hitting what should be the IWM and dies in a surplus of logging.
 2020-11-09 22:21:52 -05:00
Thomas Harte
dc8d4d49f5 Gives the two sets of switches responsibility for supplying 'state'. 
(And fixes language-card state value.)
 2020-11-09 22:11:20 -05:00
Thomas Harte
54352cb1cb Stubs in a couple more registers. 
PC now hits $0000. Likely a bug.
 2020-11-09 21:54:25 -05:00
Thomas Harte
7e106c6add Attempts to stub in read from microcontroller, and extends command 0x06. 
A complete guess on the latter, as if you didn't know.
 2020-11-09 21:20:53 -05:00
Thomas Harte
0ae49b356a Seems to do enough padding out to get me to my second failing ADB command. 
That's better than failing at the first.
 2020-11-09 19:05:48 -05:00
Thomas Harte
32374444ba Fixes text output window. 2020-11-08 17:04:04 -05:00
Thomas Harte
287bfeb924 Hacks in 40-column text. 
Hot gossip: my IIgs is reporting a system error. A clue!
 2020-11-08 17:01:23 -05:00
Thomas Harte
81c38c7200 Per the IIgs tech note, this value works the other way around. 2020-11-07 23:15:07 -05:00
Thomas Harte
3bb3d8c5c1 Adds text colour register. 
Oddly this isn't currently being set. So probably another latent fault elsewhere.
 2020-11-07 23:14:50 -05:00
Thomas Harte
b57a2bfec9 Completes logic for pixel framing. Well, mostly; this doesn't yet allow for auxiliary-using II modes being off to the left. 
The perceived effect though is that a frame appears and then freezes. So a clocking issue may still be afoot.
 2020-11-07 22:23:48 -05:00
Thomas Harte
a51f4122f0 Attempts to respect border colour. 
Though for now my display is just a sea of purple.
 2020-11-07 22:03:05 -05:00
Thomas Harte
35ba5fc894 Resolves video timing issues. 2020-11-07 21:28:08 -05:00
Thomas Harte
228d901253 Attempts to stabilise image horizontally. 2020-11-07 21:10:05 -05:00
Thomas Harte
d37ba62343 Makes first, faltering steps towards video display. 2020-11-07 20:42:34 -05:00
Thomas Harte
699fb0aa4b Switches to just-in-time video, for easy access to a clock divider. 2020-11-07 19:40:26 -05:00
Thomas Harte
613d4b7c8b Migrates character ROM handling; supplies one for the IIgs. 2020-11-07 17:45:03 -05:00
Thomas Harte
6b29e1f598 Corrects accesses to switch values. 2020-11-05 21:25:06 -05:00
Thomas Harte
6c9edbb7a2 Resolves specious interrupts.dic 2020-11-05 20:51:00 -05:00
Thomas Harte
282d0f1ebb For debugging, adds a dump of anything in the [presumably] text buffer. 
Nothing is there.
 2020-11-05 18:17:21 -05:00
Thomas Harte
f466cbadec Attempts to do just enough with video to get a functioning vertical blank query. 2020-11-05 17:56:20 -05:00
Thomas Harte
46ee98639e Stubs in $c010. 
Also reduces memory map logging.
 2020-11-04 21:35:11 -05:00
Thomas Harte
cc6c0d535c Stubs in some of the sound GLU registers. 2020-11-04 21:29:44 -05:00
Thomas Harte
78b57e73d5 Hacks in a lying vertical blank value. 2020-11-04 21:18:27 -05:00
Thomas Harte
9e2a6526d1 Corrects interpretation of bit 3 of the state register. 
And attempts to be a bit more careful with the language card in general.
 2020-11-04 21:15:10 -05:00
Thomas Harte
d3c7253981 Shifts size-limiting of X and Y to transitions and mutations, away from reads. 
Primarily to remove potential bug-causing complexity — this is easier to debug. But let's see.
 2020-11-04 20:35:41 -05:00
Thomas Harte
0178aaee2b Attempts retroactively to enforce the rule that 8-bit index modes => no top byte. 
(Rather than a preserved but ignored top byte)
 2020-11-02 18:55:28 -05:00
Thomas Harte
53f60f7c87 Adds some notes for a pending ADB implementation. 2020-11-01 14:49:04 -05:00
Thomas Harte
2da71acefd Stubs in the ADB GLU. 2020-10-31 21:00:15 -04:00
Thomas Harte
45f5896b76 Stubs video switches into the IIgs. 2020-10-31 20:39:32 -04:00
Thomas Harte
531a3bb7e6 Ensures RAM is zero-initialised, for now, to aid in repeatable bug finding. 2020-10-31 20:03:23 -04:00
Thomas Harte
1b28d929e4 Factors out the Apple II/IIe video switches and mode selection logic. 2020-10-31 20:02:50 -04:00
Thomas Harte
e4459b6256 Adds power-on bit to speed register. 2020-10-30 21:50:39 -04:00
Thomas Harte
2be817a6a1 Maps in "the interrupt ROM addresses". 2020-10-30 21:42:43 -04:00
Thomas Harte
a833bb892b Increases logging substantially. 2020-10-30 20:11:55 -04:00
Thomas Harte
0d562699a2 Ensures unmapped regions are really unmapped. 2020-10-29 22:18:01 -04:00
Thomas Harte
034056d0cd Adds full 8-bit clock addressing; stubs clock into the IIgs. 2020-10-29 21:38:36 -04:00
Thomas Harte
1249fb598b Factors Apple's RTC out of the Macintosh. 2020-10-29 21:03:02 -04:00
Thomas Harte
5a8b8478d2 Corrects unhandled IO assert. 
The IIgs proper is actually waiting on communication with the RTC.
 2020-10-28 22:14:02 -04:00
Thomas Harte
6c54699c44 Connects up an SCC. 
Thereby putting my IIgs into its first perpetual loop. Trying to do something with the SCC I haven't implemented yet perhaps?
 2020-10-28 22:07:34 -04:00
Thomas Harte
94a6da6b7d Exposes much of the auxiliary and language card stuff to the IIgs bus. 2020-10-28 21:58:20 -04:00
Thomas Harte
885fae1534 Stubs in a speed register. 2020-10-28 21:23:45 -04:00
Thomas Harte
1e4679ae14 Corrects JSL and RTL. 2020-10-28 17:25:40 -04:00
Thomas Harte
267dd59a59 Gets as far as seemingly yet another memory-map setting. 
Tomorrow, maybe?
 2020-10-27 22:31:58 -04:00
Thomas Harte
0a91ac5af5 Adds some extra notes, starts getting into trying to run the IIgs. 2020-10-27 22:09:45 -04:00
Thomas Harte
ad93ad6018 Attempts to finish off shadowing. 2020-10-27 22:05:04 -04:00
Thomas Harte
0c700094ea Goes branchless on shadowing. 2020-10-27 21:56:03 -04:00
Thomas Harte
20631a157b Contorts somewhat in pursuit of branchless shadowing regardless of page and without extra storage. 2020-10-27 21:37:39 -04:00
Thomas Harte
e44f95a882 Takes a first, faltering shot at shadowing. 2020-10-27 19:49:47 -04:00
Thomas Harte
31cd45f8b5 Takes a run at set_card_paging and simplifies method of shadowing. 2020-10-27 19:33:47 -04:00
Thomas Harte
74f9f6ad3b Tests and corrects ROM access beyond bank $00. 2020-10-27 19:02:15 -04:00
Thomas Harte
1dfdb51e61 Hits a few other easy cases. 
Still to do: card paging, and finding out which banks that applies to, and shadowing. So: everything with flags.
 2020-10-26 21:49:47 -04:00
Thomas Harte
18832dc19d Attempts to expand the language card stuff to all affected pages. 2020-10-26 20:30:41 -04:00
Thomas Harte
3dee0666cb Corrects current bank $00 language card behaviour. 2020-10-26 17:46:40 -04:00
Thomas Harte
f830f6a57a Adds failing test of initial ROM mirroring. 
It's the end of the evening, so this is it for today.
 2020-10-25 22:13:54 -04:00
Thomas Harte
82c733c68c Adds some very basic actual tests. 2020-10-25 21:40:50 -04:00
Thomas Harte
ed510409c4 Starts memory map test class, already finding a typo. 2020-10-25 21:31:21 -04:00
Thomas Harte
7614eba4bf Factors out the IIgs memory map logic. 
As testing would be rational.
 2020-10-25 21:10:04 -04:00
Thomas Harte
13c8032465 ROM isn't writeable. The clue is in the name. 2020-10-25 18:29:17 -04:00
Thomas Harte
44fc08cd5b Switches to a mapping system that supports non-continuous regions, and is smaller. 2020-10-25 18:28:32 -04:00
Thomas Harte
7631b11c55 Corrects double low-res colour serialisation. 2020-10-24 19:26:32 -04:00
Thomas Harte
726b5f62bb Corrects read/write access to auxiliary soft switches. 2020-10-24 19:00:03 -04:00
Thomas Harte
ddd84db510 Edges towards a functioning IIgs memory map. 
Next up: making sure language and auxiliary switches apply. That should get something from the ROM.
 2020-10-23 19:41:10 -04:00
Thomas Harte
966241b4cc Adds documentation, ensures the language card signals less noisily. 2020-10-23 18:44:47 -04:00
Thomas Harte
9371a8993f Factors out auxiliary memory switches and related decisions. 2020-10-22 22:33:31 -04:00
Thomas Harte
410c99de54 Factors out the language card memory selection logic. 2020-10-22 21:01:12 -04:00
Thomas Harte
817f93a490 Edges towards a working memory subsystem. At least structurally. 2020-10-22 19:25:04 -04:00
Thomas Harte
43611792ac Adds just enough to get a 65816 ticking over. 2020-10-21 21:19:18 -04:00
Thomas Harte
62231708d7 read_pages_ can be const. 2020-10-21 21:17:15 -04:00
Thomas Harte
5287c57ee0 Adds the IIgs as a user-selectable machine. 
Albeit that there is no underlying machine yet.
 2020-10-20 22:18:11 -04:00
Thomas Harte
1fa94e1b08 Adds the 65816 as an in-code option for Oric emulation. 
This also means it'll be exposed via the SDL build, but that's okay.
 2020-10-18 21:43:08 -04:00
Thomas Harte
5dcf720bb5 Extends list of BusOperations. 
Now to retest, widely.
 2020-10-15 21:35:01 -04:00
Thomas Harte
ef1a514785 Introduces 6502Selector, for picking either a 6502 or a 65816 based on a single template parameter. 2020-09-28 21:35:46 -04:00
Thomas Harte
5651ef606d Resolves failure to advance video address when output is blocked. 2020-09-15 22:20:06 -04:00
Thomas Harte
e113780fd1 Minor: ensures no possibility of a dangling(-ish) pointer within the Mac video. 2020-09-10 22:13:19 -04:00
Thomas Harte
e32ae6c191 Adds UGLY HACKs to workaround uncovered issues in the OpenGL scan target. 2020-09-10 22:10:24 -04:00
Thomas Harte
3597f687de Continues sidling towards composite & S-Video handling. 2020-08-19 21:20:06 -04:00
Thomas Harte
5c836604c0 Reenable MaserSystem code. 
Accidental/poor branch management is evidenced here.
 2020-08-04 21:50:54 -04:00
Thomas Harte
e235a45abb Breaks all output. 
... by switching out NSOpenGLView for MKLView with no drawing infrastructure yet in place.
 2020-08-04 18:22:14 -04:00
Thomas Harte
9410594486 Merge branch 'master' into LockFreeQueue 2020-07-29 21:22:19 -04:00
Thomas Harte
82d6a5387f Gives Qt disk controllers independent ROM/RAM selection logic. 
In particular, this fixes the Microdisc.
 2020-07-29 21:06:41 -04:00
Thomas Harte
1942742d73 Resolves thread data race on Macintosh audio output. 2020-07-28 22:21:52 -04:00
Thomas Harte
cbb0594e6b Use 16-sector state machine even with the 13-sector boot ROM. 
I think I've proven that the Disk II doesn't decode the 13-sector state machine correctly. Work to do there.
 2020-07-16 23:27:27 -04:00
Thomas Harte
e1c57b6fbe Further ensures both ZX80 and ZX81 functionality. 2020-07-14 23:45:51 -04:00
Thomas Harte
371c26251c Switches strategy for the ZX80. 2020-07-14 22:36:04 -04:00
Thomas Harte
645d198bee Causes ZX80 and ZX81 software that doesn't already autorun to do so. 2020-07-14 22:17:56 -04:00
Thomas Harte
478d081095 Ensures machines take user-friendly default settings. 2020-06-23 23:27:56 -04:00
Thomas Harte
7af8646470 Allowing for the constexpr, this is maybe_unused. 2020-06-19 23:47:43 -04:00
Thomas Harte
2477752fa4 Adds further [[fallthrough]] attributes. 2020-06-19 23:36:51 -04:00
Thomas Harte
59458f6444 Resolves errant spaces. 2020-06-16 23:15:38 -04:00
Thomas Harte
495024d6fe Cleans up all redundant lock/unique_guard declarations. 2020-06-15 00:24:10 -04:00
Thomas Harte
f215405beb Corrects capitalisation errors. 2020-06-02 23:27:29 -04:00
Thomas Harte
73131735fa Further qmake warning corrections. 2020-05-30 19:31:17 -04:00
Thomas Harte
48afc54af6 Cuts down unused parameter warnings to just a few that may well indicate implementation errors. 2020-05-30 01:06:43 -04:00
Thomas Harte
267006782f Starts to add Qt target; resolves many build warnings. 2020-05-30 00:37:06 -04:00
Thomas Harte
512a52e88d Increases const correctness, marks some additional constructors as constexpr, switches std::atomic construction style. 2020-05-20 23:34:26 -04:00
Thomas Harte
66c2eb0414 Further tightens const and constexpr usage. 2020-05-12 22:22:21 -04:00
Thomas Harte
8596a9826f Whether the BIOS is available in hardware is now decided entirely based on whether it is on disk. 2020-05-12 00:11:46 -04:00
Thomas Harte
81d70ee325 Adds in a few further consts. 2020-05-09 23:49:37 -04:00
Thomas Harte
05c3f2a30d Adds some further `costs. 2020-05-09 23:03:33 -04:00
Thomas Harte
25996ce180 Further doubles down on construction syntax for type conversions. 2020-05-09 23:00:39 -04:00
Thomas Harte
4136428db3 Removes dead StandardOptions.cpp. 2020-05-09 21:35:15 -04:00
Thomas Harte
31c6faf3c8 Adds a bunch of consts. 2020-05-09 21:23:52 -04:00
Thomas Harte
40b60fe5d4 Renames folder as per intended scope. 2020-05-09 18:04:11 -04:00
Thomas Harte
eed357abb4 Introduces concept of 'average peak volume' in order better to normalise audio sources like the OPLL. 2020-05-09 17:57:21 -04:00
Thomas Harte
386a7ca442 Continues doing away with the attempt heavily to interleave the OPLL and OPL2, creating a new OPLL class. 2020-05-04 21:14:51 -04:00
Thomas Harte
1f34214fb3 Imagines a future of being able to boot into the BIOS. 2020-04-29 22:07:20 -04:00
Thomas Harte
6ebc93c995 Switches to maximum-rate multiplexing. Hopefully to eliminate the mixer as a consideration for now. 2020-04-24 23:50:06 -04:00
Thomas Harte
0ac99e8d42 Disables low low-pass filter, honours audio control bits for better volume usage. 2020-04-21 19:57:13 -04:00
Thomas Harte
6568c29c54 Improves commentary. 2020-04-19 22:42:25 -04:00
Thomas Harte
559a2d81c1 Baby step: starts trying to output the raw FM carrier, no modulation, no ADSR. 2020-04-12 12:46:40 -04:00
Thomas Harte
dd6769bfbc Splits OPLL and OPL2 classes. 
Logic is: they have different mixers (additive in the OPL2, time-division multiplexing in the OPLL) as well as different register sets. So I'll put operator and channel logic directly into those structs.
 2020-04-07 23:15:26 -04:00
Thomas Harte
b0abc4f7bb Implements enough wiring that the Master System will instantiate and talk to an OPLL. 2020-04-03 20:05:36 -04:00
Thomas Harte
fe3942c5b3 Updates comments. 2020-04-01 23:49:07 -04:00
Thomas Harte
f417fa82a4 Splits 'CRTMachine' into three parts: ScanProducer, AudioProducer, TimedMachine. 
Simultaneously cleans up some of the naming conventions and tries to make things a bit more template-compatible.
 2020-04-01 23:19:34 -04:00
Thomas Harte
7a12a0149a Ensures BIOS is really not paged if not loaded. 2020-03-23 20:00:31 -04:00
Thomas Harte
69277bbb27 Renames files to match project convention. 2020-03-19 23:24:06 -04:00
Thomas Harte
7ab7efdbc1 Ensures consistent ordering. 2020-03-19 19:41:50 -04:00
Thomas Harte
b8ebdc012f Ensure normative construction declaration ordering. 2020-03-19 18:58:36 -04:00
Thomas Harte
c6f35c9aac Rejigs help output. 2020-03-18 23:11:25 -04:00
Thomas Harte
311458f41f Restores Macintosh 'runtime' options. 
Also cleans up some leftover parts elsewhere.
 2020-03-18 21:50:02 -04:00
Thomas Harte
b2a381d401 Restores Vic-20 runtime options. 2020-03-18 20:23:55 -04:00
Thomas Harte
ffc1b0ff29 Reintroduces Oric runtime options. 2020-03-18 18:31:31 -04:00
Thomas Harte
ead2823322 Reintroduces MSX and Master System runtime options. 2020-03-18 18:26:22 -04:00
Thomas Harte
a7e1920597 Restores ColecoVision runtime options. 2020-03-18 00:06:52 -04:00
Thomas Harte
ec6664f590 Takes steps to guarantee property naming; reintroduces Electron runtime options. 2020-03-17 23:52:55 -04:00
Thomas Harte
8c6ca89da2 Restores runtime options for the Acorn Electron. 2020-03-17 22:06:20 -04:00
Thomas Harte
b6e81242e7 Reintroduces Apple II runtime options. 2020-03-17 21:53:26 -04:00
Thomas Harte
f9ca443667 Adds the ability for reflective structs to limit the permitted values to enumerated properties. 2020-03-17 21:44:04 -04:00
Thomas Harte
394ee61c78 Starts a switch to reflectable-style runtime options. 
The Amstrad CPC and ZX80/81 have made the jump so far, subject to caveats. The macOS build is unlikely currently to work properly.
 2020-03-16 23:25:05 -04:00
Thomas Harte
8e3bf0dbca Starts moving towards a Deflectable-based system of runtime options. 2020-03-15 23:48:53 -04:00
Thomas Harte
2031a33edf Technically SDL users can now start a new machine. 
Missing though: all the old per-machine command-line options, and any control over the new one.
 2020-03-15 21:50:43 -04:00
Thomas Harte
fc3d3c76f8 Edges further towards providing enough information for dynamic user-provided machine creation. 2020-03-15 12:54:55 -04:00
Thomas Harte
880bed04f5 Adds AllMachines, rounds out ConstructionOptionsByMachineName. 2020-03-15 00:15:19 -04:00
Thomas Harte
1a2872c815 Starts to build an easy set interface. 2020-03-13 22:42:37 -04:00
Thomas Harte
52f644c4f1 Ensures that reflection is completely blind; starts adding SDL instantiation logic. 2020-03-12 20:56:02 -04:00
Thomas Harte
0502e6be67 Starts working towards a registration-based model of reflective enums. 2020-03-10 22:32:55 -04:00
Thomas Harte
a560601338 Corrects virtual F keys. 
They're FUNC+, not SHIFT+.
 2020-03-06 21:56:08 -05:00
Thomas Harte
58b8dfb929 Attempts to improve SDL key merging. 2020-03-05 21:56:26 -05:00
Thomas Harte
462a76dd96 Adds virtual keys for F1, F2, etc. 2020-03-05 21:01:30 -05:00
Thomas Harte
a0311858f9 Adds mappings for curly brackets. 2020-03-03 23:04:10 -05:00
Thomas Harte
f08d500fd6 Attempts to factor out the latest keyboard logic and hook it in from SDL also. 2020-03-03 22:58:15 -05:00
Thomas Harte
0ef953a1ea Adjusts EDIT for the ZX80. 2020-03-02 23:36:38 -05:00
Thomas Harte
9225c4ef70 Lowers audio frequency cut-off. Still doing this by ear. 2020-03-02 23:11:09 -05:00
Thomas Harte
32136b75cd Modifies mappings to improve key repeat on backspace and potentially allow mapping of other keys. 2020-03-02 23:10:18 -05:00
Thomas Harte
1f41d9c5f5 Further improvement: if in physical mode, but pressing an unrecognised key, attempt to 'type' it. 2020-03-02 22:08:54 -05:00
Thomas Harte
dc47a2b7d7 Adds virtual key for EDIT. 2020-03-02 21:44:15 -05:00
Thomas Harte
b2c07b3110 The Atari ST doesn't offer quick loading. 2020-03-01 22:10:41 -05:00
Thomas Harte
90e6bef6d7 Adds virtual keys for F2, F4, F6 and F8. 2020-03-01 21:47:28 -05:00
Thomas Harte
535634daca Introduces virtual left and up keys for the Vic-20. 
Thereby allowing all cursor keys to be mapped.
 2020-03-01 21:42:30 -05:00
Thomas Harte
ed18092088 Extends logic for when to fall back on standard keypress logic even in logical mode. 2020-03-01 20:25:12 -05:00
Thomas Harte
611182910a Slightly rejigs character mapper ownership. 2020-03-01 18:44:26 -05:00
Thomas Harte
9273e9b6ed Adds a second virtual key, for break. 2020-02-29 23:11:02 -05:00
Thomas Harte
0705a99ea0 Adds a virtual delete key to the ZX80 and ZX81. 2020-02-29 22:51:42 -05:00
Thomas Harte
86a09b5e7d Slightly improves ZX80 and ZX81 typing speed. 2020-02-29 22:31:45 -05:00
Thomas Harte
b33f568fdd Makes basic typing adaptations. 2020-02-29 19:59:51 -05:00
Thomas Harte
6e4bd4f505 Ensures new text is appended to any existing buffer. 
TODO: move this into add_typer?
 2020-02-29 19:58:56 -05:00
Thomas Harte
b971e2a42c Adds get_is_resetting to the Z80, eliminating the CPC's custom version. 2020-02-29 19:58:25 -05:00
Thomas Harte
3c103506c9 Optimises Electron typer speed. 2020-02-29 19:26:15 -05:00
Thomas Harte
41d2062342 Ensures that sequences of the same character are broken up properly. 2020-02-29 19:22:54 -05:00
Thomas Harte
672c59f970 Adds use of append with typer. 2020-02-29 18:52:47 -05:00
Thomas Harte
99229df017 Slightly improves syntax. 2020-02-29 18:52:12 -05:00
Thomas Harte
346d80e30b Corrects phase counting for machines that pause after clear. Which is all of them by default. 2020-02-29 18:51:55 -05:00
Thomas Harte
54b3e511e9 Extends mapping slightly for potential duplicate delete and return. 2020-02-29 18:40:41 -05:00
Thomas Harte
f25683ebec Fixes off-by-one range test. 2020-02-29 18:35:13 -05:00
Thomas Harte
8a5c4e384a Minimises typer timing. 2020-02-29 18:13:05 -05:00
Thomas Harte
4594a3c02b Ensures final thing in a key sequence is fully typed; adds ability to quicken input. 2020-02-29 18:12:32 -05:00
Thomas Harte
bd45c1c963 Adds append and generally seeks to improve string accumulation. 2020-02-29 17:34:21 -05:00
Thomas Harte
2370575eb5 Starts introducing the Patrik Rak tests. 2020-02-22 15:49:36 -05:00
Thomas Harte
fa933952f7 Throws in additional asserts, so far without uncovering anything. 2020-02-19 23:14:18 -05:00
Thomas Harte
f43c31da1f Tries a new arrangement of hsync response. 2020-02-17 22:24:01 -05:00
Thomas Harte
2e1b245cd8
Merge pull request #758 from TomHarte/JasminDriveSelection 
Switches Jasmin drive selection logic.
 2020-02-16 21:21:41 -05:00
Thomas Harte
4153442703 Switches Jasmin drive selection logic. 2020-02-16 21:15:16 -05:00
Thomas Harte
5e4b721e97 Updates Byte Drive implementation as per latest information. 2020-02-16 21:07:03 -05:00
Thomas Harte
50d356be2f Ensures all audio sources, including compound sources, announce whether they're stereo correctly. 2020-02-16 18:31:45 -05:00
Thomas Harte
9835e800ec Fixed: individual audio generators now either are or are not stereo. The speaker acts accordingly. 2020-02-16 18:28:03 -05:00
Thomas Harte
808e4e8537 Adds comment to explain channel allocations. 2020-02-16 15:04:52 -05:00
Thomas Harte
e66a3523b6 Makes some attempt at stereo support, with the Amstrad CPC being the test case. 2020-02-15 18:55:19 -05:00
Thomas Harte
e02d109864 Nudges the LowpassSpeaker towards supporting stereo generation. 2020-02-15 18:03:12 -05:00
Thomas Harte
9ca2d8f9f2 Tried to be less lazy with lambda captures. 
This is primarily defensive.
 2020-02-14 23:39:08 -05:00
Thomas Harte
3df99788ff Removes TODOs, as I think they're probably inappropriate. 2020-02-13 21:19:23 -05:00
Thomas Harte
3600d2d193 Starts switching towards a byte-oriented bus. 2020-02-13 21:14:13 -05:00
Thomas Harte
e01c66fd65 Implements multidrive support. 2020-02-12 23:32:01 -05:00
Thomas Harte
9f32fa7f5b Resolves potential random RAM writes at startup. 2020-02-12 23:31:48 -05:00
Thomas Harte
91a3d42919 Ensures no DMA clocking whatsoever when asleep. 2020-02-12 23:23:42 -05:00
Thomas Harte
452e281009 Ensures what is currently the only drive is selected. 2020-02-11 22:13:13 -05:00
Thomas Harte
05bcd73f82 Attempts to pull drive ownership into DiskController. 
For the sake of being more intelligent as to drive clocking, hopefully. And, eventually, to support multiple drive selection.
 2020-02-11 21:59:13 -05:00
Thomas Harte
6624cb7a78 Corrects set_ram macro to act more like a function. 2020-02-10 23:19:47 -05:00
Thomas Harte
85dcdbfe9e Adopts a log prefix for the Master System. 2020-02-09 19:12:44 -05:00
Thomas Harte
24340d1d4f Resolves fetch errors. 2020-02-09 17:04:49 -05:00
Thomas Harte
085529ed72 Makes the shifter behaviour conform to its documentation. 2020-02-02 17:26:39 -05:00
Thomas Harte
ff39f71ca0 Eliminates meaningless constants from the Macintosh video's CRT setup. 2020-01-30 23:29:04 -05:00
Thomas Harte
019474300d Centralises responsibility for picking irrelevant numbers for a computer-style monitor. 2020-01-30 23:26:02 -05:00
Thomas Harte
af976b8b3d Eliminates modulus operation per ROM access. 2020-01-30 23:09:24 -05:00
Thomas Harte
f3db1a0c60 Eliminates ad hoc scheduling for delayed DE -> LOAD. 2020-01-29 22:50:22 -05:00
Thomas Harte
ce28213a5e [Mostly] unifies deferral process. 2020-01-29 22:46:08 -05:00
Thomas Harte
f9ce50d2bb Adds some debugging `asserts. 2020-01-29 22:45:44 -05:00
Thomas Harte
f0a6e0f3d5 Splits out the queue management stuff from queue+action. 
Temporarily breaks ST video in the endeavour.
 2020-01-29 22:18:41 -05:00
Thomas Harte
0e29c6b0ab On further reflection, I think events should occur after the running period. 
I'm testing this now for sanity in 2/4bpp mode.
 2020-01-28 23:26:37 -05:00
Thomas Harte
c5edc879b6 Switches back to testing the monochrome monitor. 2020-01-28 22:12:57 -05:00
Thomas Harte
65309e60c4 Corrects sequence point generation by allowing for hsync_end != end of line. 2020-01-28 20:38:20 -05:00
Thomas Harte
2c0cab9e4d Adds line length latching as a line event. 2020-01-28 20:22:37 -05:00
Thomas Harte
b1ff031b54 Fixes runtime test. 2020-01-27 23:41:08 -05:00
Thomas Harte
7e8405e68a Makes 72Hz horizontal sync independently relocatable. 
... and moves and shortens it, based on my guesswork as to requirements.
 2020-01-27 23:40:01 -05:00
Thomas Harte
c8fd00217d Resolves loss of horizontal resolution in 1bpp mode. 2020-01-27 23:08:28 -05:00
Thomas Harte
9d340599a6 Towards ST 1bpp support: puts vsync in an appropriate location, starts experimenting with proper CRT timings. 2020-01-27 23:00:30 -05:00
Thomas Harte
7316a3aa88 Merge branch 'master' into FinalOverride 2020-01-26 23:42:25 -05:00
Thomas Harte
b514756272 Adds the option to run machines at a multiple of their real speeds. 
Exposed to SDL users only, for now.
 2020-01-26 13:25:23 -05:00
Thomas Harte
79bb0f8222 Updates comment. 2020-01-26 11:36:06 -05:00
Thomas Harte
43bf6aca67 Corrects reported scan status for the Amstrad CPC. 2020-01-25 23:46:18 -05:00
Thomas Harte
03d23aad41 Corrects reported ZX80/81 scan status. 2020-01-25 23:27:09 -05:00
Thomas Harte
294e09f275 All these 'override's can be 'final's. 
At least for the purpose of being communicative. I doubt there's much to gain in terms of compiler output — the DiskImageHolder can avoid some virtual lookups but nothing else leaps out.
 2020-01-23 22:57:51 -05:00
Thomas Harte
ba516387ba In all these instances, final => override. So no need to repeat myself. 2020-01-23 22:35:39 -05:00
Thomas Harte
9136917f00 Enables the Oric for 50/60Hz mode switching, inventing PAL60 for the purpose. 2020-01-23 22:14:02 -05:00
Thomas Harte
6802318784 Removes audio_queue_.flush() calls; I don't think I really need to block. At least, not usually. 2020-01-23 20:13:16 -05:00
Thomas Harte
428d141bc9 Factors out the logic behind the Atari 2600's frequency switching. 2020-01-23 20:12:44 -05:00
Thomas Harte
a86fb33789 Ensures that the ColecoVision, MSX and Master System fully flush. 2020-01-22 22:57:16 -05:00
Thomas Harte
beefb70f75 Adds vertical sync as something that can be run_until. 2020-01-22 22:20:56 -05:00
Thomas Harte
8404409c0d Causes the Atari 2600 to obey normal flush semantics. 
This stuff is going to become more important with run_until.
 2020-01-22 22:05:51 -05:00
Thomas Harte
a71c5946f0 Ensures proper manipulation of scan_statuses, leading to the correct result out of a CRTMachine. 
Possibly with the exception of the TMS, as I appear to have uncovered an unrelated issue there.
 2020-01-21 22:28:25 -05:00
Thomas Harte
d97a073d1b Adds the necessary routine for all machines to be able to respond to get_scan_status. 
They all just as the CRT, as all are currently based on the CRT. Which doesn't currently know the total clock rate it would need to in order properly to scale the answer to the question. Further thought coming.
 2020-01-20 21:45:10 -05:00
Thomas Harte
3c760e585a Switches to accepting a bit mask of events to run_until. 2020-01-20 16:08:21 -05:00
Thomas Harte
cb61e84868 Starts building out higher-level run_until functionality. 
Specifically: you can now run until the next set of speaker samples has been delivered.
 2020-01-20 12:12:23 -05:00
Thomas Harte
8349005c4b Adds CRTMachine::run_until, which will run until a condition is true. 
I want to get to being able to say "run until the beam is 60% of the way down", "run until a new packet of audio has been delivered", etc.
 2020-01-19 23:52:47 -05:00
Thomas Harte
d30f83871d Corrects Jasmin activity light. 2020-01-16 22:59:43 -05:00
Thomas Harte
efd684dc56 Opts the BD-500 in for modified Shugart RDY. 
Hopefully this is correct. I'm presently mystified as to other options.
 2020-01-16 21:34:57 -05:00
Thomas Harte
1972ca00a4 Fixes quick-NTSC-avoidance fix. 
I suspect this is very temporary, but here it is.
 2020-01-16 00:01:16 -05:00
Thomas Harte
c606931c93 Ensures a safe default-selected drive. 2020-01-15 23:56:44 -05:00
Thomas Harte
93cecf0882 Ensures no possible initial NTSC, removes printfs. 2020-01-15 23:47:45 -05:00
Thomas Harte
aac3d27c10 Adds activity indicators for the BD-500 and Jasmin. 
Also slightly cleans up DiskController a little further.
 2020-01-15 23:39:15 -05:00
Thomas Harte
91fae86e73 Factors out paging, implements a bit more of the BD500. 
That is, enough seemingly fully to work, if I force the drive to report ready.
 2020-01-15 23:15:39 -05:00
Thomas Harte
f5c194386c Ties head load to ready. 
BD-DOS no longer perpetually retries.
 2020-01-14 23:45:36 -05:00
Thomas Harte
62c3720c97 Adds status register and shout-outs on other address access. 2020-01-14 23:24:11 -05:00
Thomas Harte
f258fc2971 Adds enough of a BD500 for the boot sector seemingly to load. 2020-01-14 23:15:27 -05:00
Thomas Harte
6b84ae3095 Makes the Microdisc also a DiskController, and simplifies delegate interface. 2020-01-14 22:53:27 -05:00
Thomas Harte
5dd8c677f1 Factors out from the Jasmin the stuff that I'm going to need to repeat for the BD-500. 2020-01-14 22:23:00 -05:00
Thomas Harte
3ced31043a Makes Jasmin autoboot optional, adds a Jasmin reset key, adds the Jasmin to File -> New... . 
Also finally implements KeyNMI.
 2020-01-05 21:57:33 -05:00
Thomas Harte
7361e7ec34 Fixed: the issue was failing to propagate motor control. 
Also it seems to be incorrect to have the Jasmin paged at initial boot.
 2020-01-05 21:35:20 -05:00
Thomas Harte
533729638c It seems like Jasmin paged in at boot, and button = page back in and reset works? 
At least, that gets me a 'boot failed' error. Which is something.
 2020-01-05 20:34:15 -05:00
Thomas Harte
9f30be1c13 Attempts to implement most of a Jasmin disk interface. 
With one obvious omission: there's no way to start it? The real interface had a dedicated button, but I don't yet know what that button did. Research needed.
 2020-01-05 20:05:55 -05:00
Thomas Harte
c1bae49a92 Standardises on read and write for bus accesses. 
Logic being: name these things for the bus action they model, not the effect they have.
 2020-01-05 13:40:02 -05:00
Thomas Harte
e4349f5e05 Slightly clarifies logic. 2020-01-04 21:32:34 -05:00
Thomas Harte
7b2777ac08 Sorts cases into order; adds copious audio mirrors. 2020-01-04 21:06:21 -05:00
Thomas Harte
0fbcbfc61b Switches to more idiomatic address listing. 2020-01-04 20:35:47 -05:00
Thomas Harte
3ab4fb8c79 Enables an assumption of partial address decoding at the ACIA and PSG. 2020-01-04 17:27:55 -05:00
Thomas Harte
19ddfae6d6 Adds Joystick key code mode, ensures events aren't posted in interrogation mode. 
This should fix Turrican due to the latter change; I'm not aware of software that uses the former.
 2020-01-04 09:45:59 -05:00
Thomas Harte
414b0cc234 Reintroduces sync write delay. 2020-01-02 23:36:11 -05:00
Thomas Harte
134e828336 Updates note to self. 2020-01-02 23:33:35 -05:00
Thomas Harte
455e831b87 Corrects bug whereby changing pixel mode mid-line will produce an improper amount of data. 2020-01-02 23:18:21 -05:00
Thomas Harte
42ccf48966 Judging by Pompey Pirates Menu 88, vsync should occur a line earlier, ending during line 0. 2020-01-02 20:16:28 -05:00
Thomas Harte
2f8078db22 Switches to should_log as a global when I'm hacking about. 2020-01-02 20:15:48 -05:00
Thomas Harte
23ed9ad2de Corrects application of negative relative scale. 2020-01-01 13:22:21 -05:00
Thomas Harte
017681a97c Now honours permitted mouse range. 2020-01-01 12:48:38 -05:00
Thomas Harte
90b899c00e Attempts to implement absolute mouse positioning mode. 
Along with mouse direction.
 2020-01-01 12:29:33 -05:00
Thomas Harte
c11fe25537 Merge branch 'master' into EnchantedWoods 2019-12-30 23:32:45 -05:00
Thomas Harte
0a12893d63 Shunts vsync back down to top of frame. 
It's guess after guess, basically.
 2019-12-30 23:01:31 -05:00
Thomas Harte
8e777c299f Switches to latching video interrupts until acknowledged. 
Seems to fix Cisco Heat, at least. I have no idea whether I'm latching the correct thing, whether IACK should clear both or only one, etc.
 2019-12-30 23:00:55 -05:00
Thomas Harte
e23d1a2958 Restores vsync active. 2019-12-29 22:03:36 -05:00
Thomas Harte
6449403f6a Corrects pending_events_ test for sequence points. 
Simplifies around as possible.
 2019-12-29 21:53:45 -05:00
Thomas Harte
c8fe66092b Attempts to correct insertion logic (and mostly bypasses it). 2019-12-29 21:42:41 -05:00
Thomas Harte
b33218c61e Fixes reload test, which really needs to sense the CRT-headed vsync output. 
i.e. not the one heading back to the CPU.
 2019-12-29 20:55:34 -05:00
Thomas Harte
8ce26e7182 Adds a delay on vsync visibility (i.e. as to generating an interrupt). 2019-12-29 19:03:08 -05:00
Thomas Harte
47068ee081 Ensures visible hsync end generates a sequence point. 2019-12-29 17:51:50 -05:00
Thomas Harte
214b6a254a Adds a delay on visibility of the hsync signal, and a test on address reload. 2019-12-29 17:37:09 -05:00
Thomas Harte
93f6964d8a Introduces some preliminary line length unit tests. 
Thereby fixes one potential issue with load_ toggling.
 2019-12-28 22:50:34 -05:00
Thomas Harte
13f11e071a Simplifies border colour change propagation. 
I'm not sure it was even technically correct as was.
 2019-12-28 10:45:10 -05:00
Thomas Harte
f7825dd2a2 Pulls out address reload position as a separate constant. 2019-12-28 10:36:50 -05:00
Thomas Harte
a9d1f5d925 Pulls out address reload as something I can position independently. 
Sadly receding it by 3 did not have the effect I was hoping for, of receding Enchanted Land's first register tweaking.
 2019-12-27 23:47:19 -05:00
Thomas Harte
2757e5d600 Removes untrue comment. 2019-12-27 22:51:11 -05:00
Thomas Harte
5026de9653 Rejigs the video stream to ensure shifter really is continuous. 
... and definitively to avoid potential buffer overruns. Or, at least, to have a mechanism in place definitively to avoid them. Which will be tested and debugged as necessary.

Also simplifies the colour burst and border/pixels selection logic.
 2019-12-27 22:47:34 -05:00
Thomas Harte
5fa8e046d8 It's inaccurrate to call this _the_ shifter. So don't. 2019-12-27 19:03:10 -05:00
Thomas Harte
de43e86310 Permits Vic-20 memory to be specified in banks; adds recognition of TheC64-style file tags to specify them. 2019-12-26 22:49:48 -05:00
Thomas Harte
a9a92de954 Adds a bunch of shout-outs for unimplemented behaviour. 2019-12-25 15:32:33 -05:00
Thomas Harte
a8ba3607b7 Adds (and disables) a minor additional piece of logging. 2019-12-24 21:43:39 -05:00
Thomas Harte
5068328a15 Fixes debugging output. 2019-12-24 19:15:58 -05:00
Thomas Harte
b2bed82da6 Switches to standard logging. 2019-12-23 22:00:40 -05:00
Thomas Harte
0dae608da5 Embraces std::make_[unique/shared] in place of .reset(new . 2019-12-23 21:31:46 -05:00
Thomas Harte
5456a4a39d Eliminates static where constexpra aren't class members; adds some if constexprs for clarity. 2019-12-22 13:42:24 -05:00
Thomas Harte
274867579b Deploys constexpr as a stricter const. 2019-12-22 00:22:17 -05:00
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