Thomas Harte
e983854e71
Converts all uint8_t and uint16_t casts to the functional style.
2017-10-21 21:50:53 -04:00
Thomas Harte
5e3e91373a
Switches all unsigned int and double casts to functional style.
2017-10-21 19:49:04 -04:00
Thomas Harte
9e0907ee76
Completes clean-up of post-formalisation per-machine keyboard code.
...
At least for now. Standardising on how column + row is encoded might be helpful.
2017-10-21 10:52:35 -04:00
Thomas Harte
9ad4025138
Relocates things that were in Machines/ for machine usage.
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Leaving only those things intended to be visible interface.
2017-10-21 10:30:02 -04:00
Thomas Harte
78ee46270b
Transfers possession of keyboard mappings from the Mac side over to individual machines.
...
Specifically by establishing an intermediate representation of a useful mix between the American and British IBM and Mac keyboard layouts, and routing through that.
2017-10-12 22:25:02 -04:00
Thomas Harte
53a88a7e12
Causes the ZX80/81 to omit support for the wait line if being configured as a ZX80.
2017-08-27 16:45:36 -04:00
Thomas Harte
4a66dd9e82
Arranges for the ZX80/81 to get a peek at target configuration prior to construction. I'm as yet undecided on whether to make this the norm.
2017-08-27 16:42:16 -04:00
Thomas Harte
57bfec285f
Makes it optional whether the Z80 supports the wait line. If the wait line isn't in use, runtime costs are decreased because the optional wait cycles need not be iterated over.
2017-08-26 23:08:57 -04:00
Thomas Harte
ee71be0e7e
Added the option not to include ready line support in the 6502 core, and took advantage of it in the Electron, Oric and Vic-20 implementations. Also tagged those as forceinline and/or override final where applicable.
2017-08-21 21:56:42 -04:00
Thomas Harte
e1aded0d95
Allows Z80 users to opt out of support for the bus request line. Which both now do.
2017-08-21 20:43:12 -04:00
Thomas Harte
f68565a33f
Split the static analyser functionality so that it's possible just to ask for the set of media implied by a particular file. Extended ConfigurationTarget so that media alone can be pushed to a machine.
2017-08-17 10:48:29 -04:00
Thomas Harte
3831fbaca2
Ensured the ZX80 and '81 also provide the necessary hook for destruction.
2017-08-11 12:11:01 -04:00
Thomas Harte
dd4bc87d52
Fixed: should be a full-path #ifdef guard, given that this is one of the classes named relative to its namespace.
2017-08-11 11:21:33 -04:00
Thomas Harte
575b1dba75
Formally declared the ZX80/81 and Amstrad CPC as keyboard machines in their public interface. Which means not having to repeat the meaning of set_key_state and clear_all_keys. So: a minor DRY improvement.
2017-08-03 12:38:22 -04:00
Thomas Harte
bbb17acf3a
Expanded interface so that an external machine caller can request a string be typed without any knowledge of whatever it intends to do re: CharacterMappers. Which is immediately useful in paste functionality.
2017-08-03 11:50:50 -04:00
Thomas Harte
ad3a98387f
Within the Typer framework: hatched out CharacterMapper as a distinct thing from the target for keypresses, better to formalise responsibility but also to make it easy cleanly to sever that stuff into its own little part.
2017-08-03 11:42:31 -04:00
Thomas Harte
2f2071be8a
These should actually both be in the public header, as the types are used in an exposed method.
2017-08-02 22:18:30 -04:00
Thomas Harte
6d510e4e70
Made it no longer public knowledge that any sort of Typer is involved in being a ZX80/81.
2017-08-02 22:17:22 -04:00
Thomas Harte
8e0736fbe6
Reinstated typing ability, albeit with an ugly inline insertion. But I think I can defer dealing with typers to another pull request. The whole issue of keyboard mapping probably needs reappraisal.
2017-08-02 22:16:09 -04:00
Thomas Harte
681d1e2f8d
Breaking its typer for now, adapted the ZX80/81 to having a Z80, not being one.
2017-08-02 22:12:59 -04:00
Thomas Harte
4abd62e62b
Standardises on const [Half]Cycles as the thing called and returned, rather than const [Half]Cycles & as it's explicitly defined to be only one int in size, so using a reference is overly weighty.
2017-07-27 22:05:29 -04:00
Thomas Harte
968d2bb8ba
Brought Typer into the new run_for orthodoxy, making it easier to clock consistently regardless of unit. Which necessitated adding a negative operator for WrappedInts.
2017-07-27 21:53:45 -04:00
Thomas Harte
8848ebbd4f
Formalised set_interrupt_line's optional parameter as being a count of HalfCycles; corrected PartialMachineCycle.is_wait and effected the proper timing for counter reset on a ZX81.
2017-07-27 21:10:14 -04:00
Thomas Harte
8361756dc4
Switched definitively to the works-for-now approach of requiring an explicit opt-in where somebody wants to clock a whole-cycle receiver from a half-cycle clock.
2017-07-27 07:40:02 -04:00
Thomas Harte
81a3899381
Adjusted the Z80 formally to communicate in terms of half cycles rather than whole.
2017-07-26 19:42:00 -04:00
Thomas Harte
966b5e6372
Adapted the Z80's perform_machine_cycle to return Cycles.
2017-07-25 22:25:44 -04:00
Thomas Harte
75d67ee770
Relocated ClockReceiver.hpp as it's a dependency for parts of the static analyser, and therefore needs to be distinct from the actual emulation parts.
2017-07-25 20:20:55 -04:00
Thomas Harte
a1e9a54765
Eliminated redundant uses of ClockReceiver and sought to ensure that proper run_fors are inherited all the way down.
2017-07-25 20:09:13 -04:00
Thomas Harte
8a2bdb8d22
Converted the TimedEventLoop and the things that sit atop it into ClockReceivers.
2017-07-24 21:19:05 -04:00
Thomas Harte
b82bef95f3
Decided to follow through on Cycles and HalfCycles as complete integer-alikes. Which means giving them the interesting range of operators. Also killed the implicit conversion to int as likely to lead to type confusion.
2017-07-24 20:10:05 -04:00
Thomas Harte
ba088e5545
Adapted the Z80 into a clock receiver, which also vends Cycles rather than a raw int within its PartialMachineCycle struct. The objective is to update it to vend HalfCycles within its struct, but I think I need to do some work on cycle/half-cycle arithmetic first.
2017-07-23 22:15:04 -04:00
Thomas Harte
c2a7dffa7d
Converted the ZX80/81 video component into a ClockReceiver. As it happens, it's most convenient to take the half-cycle bus here.
2017-07-22 23:02:28 -04:00
Thomas Harte
2ff157cf7a
Switched CRTMachine over to use Cycles as an explicit statement of units, and followed through on the effects of that.
2017-07-22 22:17:29 -04:00
Thomas Harte
3f609e17b3
Factored out the table-lookup approach to being a typer, and adjusted so as definitely to limit myself to positive offset table lookups.
2017-07-21 21:18:51 -04:00
Thomas Harte
2471ef805b
Fixed signed/unsigned comparison and potential negative table reference.
2017-07-21 20:45:49 -04:00
Thomas Harte
a3e0024980
Chopped time accumulation out of the default Tape process because it's proving to be sufficiently expensive for a TZX as not to be worthwhile. Introduced a cheaper position capturing/restoring method.
2017-07-21 18:55:03 -04:00
Thomas Harte
44e5a03cf2
Removed just-don't-power-the-tape approach to pausing and playing, in favour of being fully communicative.
2017-07-19 19:21:27 -04:00
Thomas Harte
ac59dd8b1d
Added enough typing to issue a load command. No thoughts as to running yet though.
2017-07-09 22:07:12 -04:00
Thomas Harte
3e5c209039
Added basic Typer support for the ZX80 and '81.
2017-07-09 22:00:34 -04:00
Thomas Harte
ed28260aaf
Hardens the ZX80/81 video routines to ensure they never try to push data into the future and don't double-count time when pixels would ostensibly run into sync. You could previously see the CRT being handed negative run lengths if sync interrupted pixels or if a run of more than 320 pixels (my arbitrary buffer size) occurred, with corresponding poor behaviour given my use of unsigned numbers.
2017-07-09 19:33:05 -04:00
Thomas Harte
87658e83c1
Moved line counter reset logic; I think this is actually correct.
2017-07-09 00:05:30 -04:00
Thomas Harte
4509c3ce34
By observation, it appears that disabling vsync occurs on any port output whatsoever, as long as NMI isn't blocking it.
2017-07-08 21:01:52 -04:00
Thomas Harte
30e93979d2
Removed data work if sync is enabled; in that case no data is output.
2017-07-08 21:01:07 -04:00
Thomas Harte
d6b87053bf
Introduced an explicit record of whether a video byte is latched. It's definitely incorrect to treat the latching of 0 as equivalent to no latching, as the byte that will eventually become video is not strongly implied.
2017-07-08 20:40:19 -04:00
Thomas Harte
22389a5d2d
Merge branch 'master' into HiRes
2017-07-08 20:38:25 -04:00
Thomas Harte
54efcb7e2f
Made a game attempt at automatic motor control and ensured setting is initialised correctly from the user defaults.
2017-07-08 19:31:20 -04:00
Thomas Harte
e2575d6de4
Routed tape motor selections through to the C++ side of the world, and ensured that manual tape playback works properly.
2017-07-08 19:21:12 -04:00
Thomas Harte
46fff8e8a2
Ensured bit 8 is uniquely from the latched video byte, not an OR of that with the refresh address.
2017-07-06 22:48:48 -04:00
Thomas Harte
a3684545b5
Added a block on the tape motor for a short period after each time the ROM routine is intercepted for a substituted byte read. To reduce the collision between fast tape and real tape loading.
2017-07-06 22:33:54 -04:00
Thomas Harte
a72a2e0a1a
Ensured tape doesn't proceed of its own volition when in fast-loading mode.
2017-06-23 20:21:37 -04:00
Thomas Harte
50375fb373
Ensured tape position is unaffected if the attempt at loading quickly fails.
2017-06-23 20:18:19 -04:00
Thomas Harte
cb105fdeb4
Took a first stab at high-res support.
2017-06-22 22:48:17 -04:00
Thomas Harte
acfd4dde36
Reduced port writes which can adjust programmatic sync, and prevented anything while NMI generation is active. Moved line counter increment from triggered by interrupt acknowledge to triggered by horizontal sync. In both cases, cribbing from my own earlier work. Initial results suggest that sync issues are resolved in third-party software.
2017-06-22 22:44:06 -04:00
Thomas Harte
644ef13acd
Connected up the fast-tape GUI option for the ZX80 and '81.
2017-06-22 20:20:31 -04:00
Thomas Harte
b7c978e078
Added getters for most of the input lines, and attempted to round out the ZX81's wait logic.
2017-06-22 20:11:19 -04:00
Thomas Harte
52d9ddf9e5
Gave the binary tape player a more logical assignment of wave level to output level. Which miraculously appears to have been the issue with the ZX80/81 tape loading — the inconsistency of silences seems to have been the issue.
2017-06-21 22:13:24 -04:00
Thomas Harte
a6810fc3ef
Removed some minor duplicity and ensured that hsync/NMI ends on the nominated cycle, not one afterwards.
2017-06-21 21:44:42 -04:00
Thomas Harte
15f6c51062
Added the most trivial implementation of the ZX81 wait line.
2017-06-21 21:28:14 -04:00
Thomas Harte
e1355d4b62
Restored proper video output.
2017-06-21 21:18:09 -04:00
Thomas Harte
4bf13610ce
Reinstated interrupts by moving the refresh test back into the refresh cycle.
2017-06-21 21:03:39 -04:00
Thomas Harte
0e0ce379b4
Renamed MachineCycle to PartialMachineCycle given that it mostly no longer intends to describe an entire machine cycle.
2017-06-21 20:38:08 -04:00
Thomas Harte
36e8a11505
Sought to simplify the way partial machine cycles are communicated, for ease of machine implementation. Also implemented the wait line.
2017-06-21 20:32:08 -04:00
Thomas Harte
e1a2580b2a
Renamed BusOperation to MachineCycle::Operation.
2017-06-17 21:53:45 -04:00
Thomas Harte
08a542a324
Reenabled the fast-loading hack.
2017-06-15 18:30:12 -04:00
Thomas Harte
9b3d05e05f
Simplified decoding logic.
2017-06-14 22:24:44 -04:00
Thomas Harte
d8e3103a2b
Fixes: switched ZX80 and ZX81 timing to the correct way around, ensured that my wait takes effect if HALT **isn't** set, and made sure to recover from it.
2017-06-13 21:48:17 -04:00
Thomas Harte
76a64d13a0
Made a first attempt at ZX81 emulation.
2017-06-13 21:25:55 -04:00
Thomas Harte
1e975859c2
Started splitting ZX80 and ZX81 paths. Also the '80 fires its horizontal sync a little earlier than the '81, so pulled that back a little.
2017-06-13 20:09:09 -04:00
Thomas Harte
4c5261bfa0
Made first attempt to use the horizontal counter for something; here for sync timing only, even though I've gone exclusively with '81-style timing for now.
2017-06-12 22:28:30 -04:00
Thomas Harte
8b09b4180b
This now at least remembers whether it is meant to be a ZX81 and has storage for a horizontal counter.
2017-06-12 21:33:16 -04:00
Thomas Harte
b9dbb6bcf8
Discovered my timing error: the I/R <-> A loads should take an extra cycle. This means the ZX80 now finally takes the correct 207 cycles per line. Fixed the video output wave to be clocked at the appropriate rate.
2017-06-12 18:55:04 -04:00
Thomas Harte
302c2e94de
Corrected lingering hard-coded mask. So titles for memory configurations above 1kb now load.
2017-06-11 21:27:46 -04:00
Thomas Harte
06fe07932a
While tidying up, killed an unused instance variable.
2017-06-11 21:21:26 -04:00
Thomas Harte
6913c7a018
This also can just use rom_mask_.
2017-06-11 19:29:20 -04:00
Thomas Harte
6b602c74b7
Made an attempt to support memory maps other than the unexpanded default of 1kb.
2017-06-11 19:29:02 -04:00
Thomas Harte
e40d553045
Bumped the tape parser up into the machine to ensure a maintained state. Temporarily disabled normally-timed tape playback.
2017-06-11 18:31:43 -04:00
Thomas Harte
e5b30cdfbb
Attempted to ensure appropriate resumption of processing after quick-reading a tape byte.
2017-06-11 17:28:47 -04:00
Thomas Harte
ba5f34f827
Narrowed view to the centre 80% of a frame.
2017-06-11 17:24:32 -04:00
Thomas Harte
84d2feb2e6
Cleaned up and implemented fast-tape hack. I've decided it'd be better to test some other software, potentially to give multiple issues to think about, rather than sitting around with just the one.
2017-06-11 16:42:49 -04:00
Thomas Harte
d910a4fd38
Adjusted to signal an interrupt during the refresh cycle rather than weirdly just afterwards. Which cuts video timing down by 4 cycles a line. There still might be a problem here somewhere though, as I'm getting 206 cycles/line and the internet states it should be 207.
...
Also: lots of printfs have grown temporarily as I try to figure out what I'm doing so wrong as to break loading.
2017-06-11 13:32:20 -04:00
Thomas Harte
5626d35bc4
Tried flipping the bit meaning; decided at least to leave it in full-byte form.
2017-06-06 18:38:05 -04:00
Thomas Harte
63e0802f4e
Ensured tape input appears on the returned value.
2017-06-06 18:16:27 -04:00
Thomas Harte
e3ee9604a5
Added comments.
2017-06-06 18:01:33 -04:00
Thomas Harte
8c66e1d99d
Factored out ZX80/81 video and rejigged to ensure it will keep ticking over irrespective of whether the machine is supplying data.
2017-06-06 17:53:23 -04:00
Thomas Harte
ca9e8aecd6
Made a seemingly unsuccessful attempt to add tape input.
2017-06-06 10:13:32 -04:00
Thomas Harte
cc4cb45e9d
Implemented keyboard input and ensured that the signal generated is marked as composite, putting the colour-suppression ball into the CRT's court.
2017-06-06 09:25:18 -04:00
Thomas Harte
ebbf6e6133
Surprisingly, I think this may actually be the correct output: stopped throwing away the I part of the refresh register and flipped black and white.
2017-06-06 09:03:09 -04:00
Thomas Harte
cba07dec7e
Doubled up to display all eight pixels. To confirm that they are the wrong pixels.
2017-06-06 08:59:00 -04:00
Thomas Harte
6f7037b2b1
Made an initial stab at outputting half the correct pixels.
2017-06-06 08:55:07 -04:00
Thomas Harte
ef4b2f963d
Probably more-or-less corrected. But this is all a bit too interdependent.
2017-06-05 23:52:56 -04:00
Thomas Harte
97f3ff03b6
Restored white background and attempted to correct output timing deficiencies. Incomplete success.
2017-06-05 23:50:04 -04:00
Thomas Harte
2fbc7a2869
Made a very basic attempt at getting something that at least demarcates proper graphics output.
2017-06-05 23:32:49 -04:00
Thomas Harte
4983718df7
Got to outputting something to the CRT. Should be just proper syncs and a paper background. It's not synchronising properly, so something is amiss in my timing.
2017-06-05 10:47:42 -04:00
Thomas Harte
23ca00fd9a
Added memory fuzzing as a way to verify state being written by the Z80. Eventually discovered the HALT problem as fixed in the last commit, so have stripped away the caveman stuff again.
2017-06-05 10:36:07 -04:00
Thomas Harte
893f61b490
Attempted specifically to reproduce the 1kb ZX80 memory map in the hope of getting compact lines and in case mirroring is why I'm getting completely empty video reads. Still no action.
2017-06-05 09:38:49 -04:00
Thomas Harte
7e3a46c33e
[Re]discovered that sync may also be a product of the interrupt cycle. So started looking into that.
2017-06-04 21:54:55 -04:00
Thomas Harte
73654d51dd
Wired up actually to run.
2017-06-04 18:37:13 -04:00
Thomas Harte
096551ab3e
Made a first attempt to hash out the ZX80's bus. Video output isn't yet going though. Can't seem to find clarity on whether horizontal sync is really programmatic. Let's see.
2017-06-04 18:32:23 -04:00
Thomas Harte
c485c460f7
Imported the ZX80 and 81 system ROMs (though not publicly), added enough code to post their contents into C++ world.
2017-06-04 18:08:35 -04:00
Thomas Harte
d2637123c4
Added necessary support to get as far as an empty window when attempting to load a piece of ZX80 software.
2017-06-04 17:55:19 -04:00
