Thomas Harte
|
f5e2dd410e
|
Constrained output to the centre 90%.
|
2017-08-02 19:55:44 -04:00 |
|
Thomas Harte
|
e50adf1cc8
|
Were my TZX support up to it, this would likely be sufficient for tape emulation.
|
2017-08-02 13:50:14 -04:00 |
|
Thomas Harte
|
dcab10f53e
|
Ensured the AY's async queue doesn't just fill and fill.
|
2017-08-02 07:38:35 -04:00 |
|
Thomas Harte
|
f602f9b6ec
|
Adds an attempt to clock the AY.
|
2017-08-02 07:21:33 -04:00 |
|
Thomas Harte
|
4d5d5041df
|
Attempted to ensure a clean startup.
|
2017-08-01 22:18:42 -04:00 |
|
Thomas Harte
|
587eb3a67c
|
Factored interrupt counting out of the CRTCBusHandler.
|
2017-08-01 22:15:39 -04:00 |
|
Thomas Harte
|
8d39a20088
|
Added proper output of mode 3, were anything ever to try to use it.
|
2017-08-01 21:51:41 -04:00 |
|
Thomas Harte
|
4b6370eb86
|
Realised my colour error: mapping the ROM numbers as though they were the hardware numbers. Having fixed that, spotted that I was deserialising R and B the wrong way around and dividing by too much. Colours now appear to be correct.
|
2017-08-01 21:47:52 -04:00 |
|
Thomas Harte
|
c6e340a8a2
|
Wired up the vsync signal. Pen 15 no longer flashes like crazy. Still can't figure out why the palette is so askew; was looking for perhaps some sort of detection of a green screen rather than a colour one, but there's no obvious input for that.
|
2017-08-01 21:21:59 -04:00 |
|
Thomas Harte
|
31c7153301
|
Corrected bit to colour mapping for modes 0 and 1. The total palette is still way off but there's consistency between modes now.
|
2017-08-01 20:52:42 -04:00 |
|
Thomas Harte
|
7e04d00cc1
|
Fixed key values, causing the new set of keys to work, decreased quantity of output and ensured that pixels appear in modes 0 and 2.
|
2017-08-01 20:39:10 -04:00 |
|
Thomas Harte
|
eca9586a0f
|
Fixed: input value is no longer overwritten by 0xff. The '0' key now works.
|
2017-08-01 20:19:02 -04:00 |
|
Thomas Harte
|
2e4577f741
|
Made a game attempt at implementing a (sticky) keyboard. No effect yet.
|
2017-08-01 17:52:05 -04:00 |
|
Thomas Harte
|
f5b278d683
|
Added enough stuff to put the emulated Amstrad CPC in a state of knowing whether its '0' key is pressed.
|
2017-08-01 17:31:56 -04:00 |
|
Thomas Harte
|
e6854ff8db
|
Corrected typo: the input to an AY is BDIR, not BCDIR.
|
2017-08-01 17:06:57 -04:00 |
|
Thomas Harte
|
3b292273c7
|
Fixed: BC2 is always implicitly set. The machine is now periodically checking the AY's register 14 (i.e. the first input port), so probably there's enough here now to implement keyboard input.
|
2017-08-01 17:05:11 -04:00 |
|
Thomas Harte
|
cb732e5d5f
|
Made an attempt to wire in an [unclocked] AY, in an endeavour to get to keyboard reading.
|
2017-08-01 17:01:58 -04:00 |
|
Thomas Harte
|
08ad35efd9
|
It's barely an implementation of the 8255, but ensured that data is bounced into the PortHandler, conveniently assuming the interaction mode used by the CPC.
|
2017-08-01 16:34:13 -04:00 |
|
Thomas Harte
|
58b98267fc
|
Formally transferred ownership of PIO accesses to an incoming template, and decided to start being explicit about how to specify the interfaces and provide fallbacks for optional behaviour for the new, clean generation of interfaces. A full-project sweep will inevitably occur but I'll try to tie off this branch first.
|
2017-08-01 16:15:19 -04:00 |
|
Thomas Harte
|
a27946102a
|
Took a shot at the interrupt counter. Attempts at keyboard reading now recur so it'll probably do for now. I think that next puts me into the realm of needing to implement the 8255.
|
2017-08-01 15:49:16 -04:00 |
|
Thomas Harte
|
6ac7132799
|
Had a quick go at properly outputting Mode 1, adding wiring to communicate palette and mode changes to the CRTC bus handler. Colours are off but it's sufficient for now.
|
2017-08-01 15:16:13 -04:00 |
|
Thomas Harte
|
ca42abab70
|
Doubled up to ensure that every byte that should be inspected is represented. This makes it clearer that I'm on the right road. A garbled version of 'Amstrad 64k Microcomputer' can be discerned, in a weird grayscale and with the right-hand column missing and skewed output as a result.
|
2017-08-01 07:56:44 -04:00 |
|
Thomas Harte
|
933d69a256
|
Fixed slightly: the CPC wiki has a typo. It's 12 and 13 that move up to 14 and 15.
|
2017-08-01 07:51:13 -04:00 |
|
Thomas Harte
|
10a5581aea
|
Made first attempt at offering some sort of pictographic of actual RAM contents.
|
2017-08-01 07:34:12 -04:00 |
|
Thomas Harte
|
3ae699964f
|
Ensured an actual pixel stream is supplied for pixel regions. Though it's just a long stream of white pixels for now. So visual output is unchanged.
|
2017-08-01 07:24:29 -04:00 |
|
Thomas Harte
|
9d953421d8
|
After a quick check, added a couple of other _delegate initialisations. I should probably find a way to template this.
|
2017-08-01 07:07:43 -04:00 |
|
Thomas Harte
|
763e3b65d1
|
Ensured a proper initial value for delegate_ .
|
2017-07-31 22:46:06 -04:00 |
|
Thomas Harte
|
42dd27c9b1
|
Shunted method bodies inline, given that there's no need for a declaration/definition distinction.
|
2017-07-31 22:39:25 -04:00 |
|
Thomas Harte
|
3df13cddd4
|
As per my keenness for cleanliness improvements corresponding to my ever-increasing C++ ability: turned the Amstrad into something that a factory produces, allowing me completely to hide a bunch of implementation details.
|
2017-07-31 22:32:04 -04:00 |
|
Thomas Harte
|
c2253c1e0f
|
Fixed multiplier: the dot clock I've used to instantiate the CRT is the pixel clock, not the character clock.
|
2017-07-31 22:17:46 -04:00 |
|
Thomas Harte
|
f742fd5d4a
|
Made basic attempt to get something on screen: white where the display is enabled, black for the border.
|
2017-07-31 22:13:20 -04:00 |
|
Thomas Harte
|
69b99fe127
|
Transferred ownership of the CRT to the CRTC bus handler, to give it easy access.
|
2017-07-31 22:04:52 -04:00 |
|
Thomas Harte
|
e28829bd1b
|
Corrected CRTC timing, gave it someone to talk to and a means with which to talk.
|
2017-07-31 20:14:46 -04:00 |
|
Thomas Harte
|
68ceeab610
|
Created a 6845 class and started pushing data at it and clocking it. It doesn't currently have the concept of a bus but will do, hence the in-header implementation.
|
2017-07-31 19:56:59 -04:00 |
|
Thomas Harte
|
68dca9d047
|
Made a first attempt at ROM paging, with pretty much the same scheme that'll be needed for 128kb support.
|
2017-07-31 19:37:28 -04:00 |
|
Thomas Harte
|
d88ca151f4
|
Added a first attempt at output port decoding. Just logging for now.
|
2017-07-31 19:25:10 -04:00 |
|
Thomas Harte
|
3c90218c3d
|
With a very basic stab at something a bit like the memory map (sans paging), execution begins.
|
2017-07-31 19:15:43 -04:00 |
|
Thomas Harte
|
afd409c883
|
Ensured that ROM images are loaded and passed to the Amstrad CPC.
|
2017-07-31 18:44:49 -04:00 |
|
Thomas Harte
|
9c04d851e4
|
Added the basics necessary to get the CPU ticking over, at a nominal 4Mhz but with the wait states that I currently believe to be accurate.
|
2017-07-31 07:29:50 -04:00 |
|
Thomas Harte
|
1d6fe11906
|
Added an instance of Outputs::CRT::CRT . So progress is now: select CDT, up comes a blank window.
|
2017-07-31 07:16:51 -04:00 |
|
Thomas Harte
|
c0f1313830
|
Performed sufficient wiring to get to the point where attempting to load a CDT creates an instance of the Amstrad CPC and then fails only because the thing vends a nullptr CRT.
|
2017-07-30 22:05:29 -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
|
9ef232157b
|
Revoked the operator bool() on WrappedInt as providing an indirect means for implicit but incorrect assignment to unwrapped ints. Got explicit about run_for intention and simplified HalfClockReceiver slightly by building a lossy and a flushing conversion to Cycles into HalfCycles. Adapted the all-RAM Z80 properly to return HalfCycles.
|
2017-07-27 21:38:50 -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
|
cda223ffc0
|
Added explicit signedness cast.
|
2017-07-25 22:49:03 -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
|
279c369a1f
|
Switched to Cycles as the result from the 6502 perform_bus_operation , helping slightly to clarify what you're intended to return and reducing type jumping within the 6502 implementation.
|
2017-07-25 22:21:09 -04:00 |
|
Thomas Harte
|
d9c6b3bcf7
|
Corrected TIA's WSYNC lookahead to accept Cycles .
|
2017-07-25 22:13:41 -04:00 |
|
Thomas Harte
|
296c7cec05
|
Adopted flush widely.
|
2017-07-25 20:42:51 -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_for s are inherited all the way down.
|
2017-07-25 20:09:13 -04:00 |
|
Thomas Harte
|
8d1dacd951
|
Clean ups along the Electron::Tape line: ensured that the ClockReceiver is opted into only once, and that its run_for propagates all the way along the chain.
|
2017-07-25 20:01:30 -04:00 |
|
Thomas Harte
|
40339a12e1
|
Formalised the use of a cycles count with a divider, bringing a few additional plain-int users into the fold.
|
2017-07-25 07:15:31 -04:00 |
|
Thomas Harte
|
90bf6565d0
|
Reduced int/Cycle conversions in the Electron and on the Atari 2600, where the current framework makes it possible to do so.
|
2017-07-24 22:53:13 -04:00 |
|
Thomas Harte
|
c1527cc9e2
|
Reduced back-and-forth between Cycles and int s within the Oric.
|
2017-07-24 22:46:31 -04:00 |
|
Thomas Harte
|
c77a83d86f
|
The 6560 is now a ClockReceiver . This reduces to zero the number of remaining instances of the text run_for_cycles in this codebase.
|
2017-07-24 22:38:35 -04:00 |
|
Thomas Harte
|
a6e377aa57
|
The Electron's video is now a ClockReceiver .
|
2017-07-24 22:36:42 -04:00 |
|
Thomas Harte
|
9435c1e12a
|
The 1540 is now a ClockReceiver .
|
2017-07-24 22:32:41 -04:00 |
|
Thomas Harte
|
efdac2ce8c
|
The 6522 is now a ClockReceiver .
|
2017-07-24 22:29:09 -04:00 |
|
Thomas Harte
|
2912d7055b
|
The 6532 is now a ClockReceiver .
|
2017-07-24 21:57:24 -04:00 |
|
Thomas Harte
|
55ecb0c022
|
Converted the Microdisc into a ClockReceiver .
|
2017-07-24 21:51:13 -04:00 |
|
Thomas Harte
|
13f7aa4063
|
The TIA is now a ClockReceiver .
|
2017-07-24 21:48:34 -04:00 |
|
Thomas Harte
|
915f587ef1
|
Updated the Electron's tape class to be a ClockReceiver .
|
2017-07-24 21:36:30 -04:00 |
|
Thomas Harte
|
b7f88e8f61
|
Filter is now a ClockReciever , affecting all sound output devices.
|
2017-07-24 21:29:13 -04:00 |
|
Thomas Harte
|
8a2bdb8d22
|
Converted the TimedEventLoop and the things that sit atop it into ClockReceiver s.
|
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
|
6369138bd1
|
Converted the Oric's video output into a ClockReceiver .
|
2017-07-22 23:11:30 -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
|
83628b285b
|
Experimentally turned the 6502 into a clock receiver. No problem encountered.
|
2017-07-22 21:52:21 -04:00 |
|
Thomas Harte
|
1bbb4cb478
|
Increased documentation.
|
2017-07-22 17:39:51 -04:00 |
|
Thomas Harte
|
d46da6ac9d
|
Added documentation.
|
2017-07-22 17:31:12 -04:00 |
|
Thomas Harte
|
dddb30477b
|
Used a different inner-loop variable, for clarity.
|
2017-07-21 21:52:08 -04:00 |
|
Thomas Harte
|
37459a3ebc
|
Fixed parameter shadowing.
|
2017-07-21 21:51:18 -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
|
b3861ff755
|
Reduced copying of Pulses.
|
2017-07-16 19:49:31 -04:00 |
|
Thomas Harte
|
1d3ae31755
|
Abstracted the concept of an Acorn shifter away from being a PLLParser. The Acorn tape parser now skips using that class and uses the shifter. The actual Electron also uses the shifter. So the two are completely aligned. Net result: the Electron should successfully load exactly when static analysis was successful.
|
2017-07-16 19:24:01 -04:00 |
|
Thomas Harte
|
f931cd582d
|
Switched to use of std::vector in those few remaining places where I was still using a unique_ptr to a native type and new ing for myself. So, some of my earliest bits of code.
|
2017-07-16 13:54:07 -04:00 |
|
Thomas Harte
|
481487f084
|
Oh yuck, it looks like I've repeated this same test in two different places. Must figure out where to factor it out to. But in the meantime, the emulated Electron has just loaded its first CSW.
|
2017-07-13 22:39:30 -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
|
353c854734
|
Removed a TODO that is no longer appropriate.
|
2017-07-09 22:06:50 -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
|
b842c5b8bb
|
Merge branch 'master' into ZX81FastLoading
|
2017-07-06 22:03:24 -04:00 |
|
Thomas Harte
|
0c037627fc
|
Typer fixes: the recipient no longer releases the caller, and a duplicate call to strlen and piece of arithmetic is corrected.
|
2017-07-06 21:38:56 -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 |
|
Thomas Harte
|
2562306802
|
Merge branch 'master' into Z80
|
2017-05-16 21:05:00 -04:00 |
|
Thomas Harte
|
2ee8a7056e
|
Corrected TIA no longer to assume phase is an automatic quarter askew.
|
2017-05-16 20:43:28 -04:00 |
|
Thomas Harte
|
a5075d9eb5
|
Formalised the reasoning behind the colour phase fix-up and made it an opt-in per-caller value. Only the Oric currently needs to opt in.
|
2017-05-16 20:31:39 -04:00 |
|
Thomas Harte
|
eb8a2de5d6
|
Settled definitively on flush as more communicative than synchronise (and slightly more locale neutral); culled some more duplication from the Z80.
|
2017-05-15 07:38:59 -04:00 |
|
Thomas Harte
|
0808e9b6fb
|
Pulled the 6502 into a CPU namespace, making it an instance of something that has micro-opcodes and schedules them, and factoring out the formulation of a register pair.
|
2017-05-14 22:08:15 -04:00 |
|
Thomas Harte
|
8e35e913bb
|
Formally withdrew the 'load automatically' option for the Vic, having removed that option elsewhere.
|
2017-05-14 16:59:24 -04:00 |
|
Thomas Harte
|
5d91a2600d
|
Permitted ROM-style PRGs that are not a power-of-two in size, and added extra safety checks on loading data from a tape.
|
2017-05-08 22:15:35 -04:00 |
|
Thomas Harte
|
cb66c7e2dc
|
Performed some minor tidying.
|
2017-05-08 21:05:35 -04:00 |
|
Thomas Harte
|
61f8f2f18c
|
Switched to a more straightforward way of exiting from tape data loading.
|
2017-05-08 20:58:55 -04:00 |
|
Thomas Harte
|
7b43ae0a92
|
Implemented a catch for loading the data portion of files.
|
2017-05-07 22:22:59 -04:00 |
|
Thomas Harte
|
2807e3134f
|
Implemented speedy header finding. So that's half of it.
|
2017-05-07 20:32:48 -04:00 |
|
Thomas Harte
|
0771363f3b
|
Removed one piece of unnecessary logging.
|
2017-05-06 22:22:03 -04:00 |
|
Thomas Harte
|
2edf73908c
|
Temporarily disabled the existing fast loading implementation in pursuit of another, and started trying to correct the lack of connection between the userport VIA and the tape drive.
|
2017-05-06 22:00:12 -04:00 |
|
Thomas Harte
|
ed6b135015
|
Made final switch to permit high-sampling rate Atari audio.
|
2017-04-15 21:18:00 -04:00 |
|
Thomas Harte
|
f95015c7f6
|
Pulled out the divisor for audio.
|
2017-04-03 21:16:39 -04:00 |
|
Thomas Harte
|
814c0ada13
|
Fixed action counts for border motion.
|
2017-03-26 18:33:05 -04:00 |
|
Thomas Harte
|
dfc468f220
|
Locked down all initial state.
|
2017-03-26 15:47:04 -04:00 |
|
Thomas Harte
|
e01f3f06c8
|
Completed curly bracket movement.
|
2017-03-26 14:34:47 -04:00 |
|
Thomas Harte
|
3229502fa1
|
Standardised curly bracket placement across the Atari.
|
2017-03-23 21:59:16 -04:00 |
|
Thomas Harte
|
a26b87f348
|
Fixed: mistake was failure to count ready cycles.
|
2017-03-20 20:44:03 -04:00 |
|
Thomas Harte
|
4c3cc42c91
|
This gives a very noisy version of the real audio.
|
2017-03-20 20:38:29 -04:00 |
|
Thomas Harte
|
f3f4e1a541
|
Made a first, hacky, attempt at audio.
|
2017-03-20 19:35:51 -04:00 |
|
Thomas Harte
|
4722f6b5c4
|
Fixed sprite disappearance: test should be applied predecrement, not post — it relates to the address being used this access, not the next one.
|
2017-03-19 18:58:35 -04:00 |
|
Thomas Harte
|
7d8d1c7828
|
Fixed 'random' number generator.
|
2017-03-19 18:54:35 -04:00 |
|
Thomas Harte
|
4bb70e7d31
|
Resetting the mask upon low byte write appears to resolve some issues.
|
2017-03-19 18:49:37 -04:00 |
|
Thomas Harte
|
321030bb44
|
Added a slightly faulty but seemingly 'close' version of masking.
|
2017-03-19 18:28:06 -04:00 |
|
Thomas Harte
|
6c161b1150
|
This gives something that might be the correct background.
|
2017-03-19 17:49:48 -04:00 |
|
Thomas Harte
|
d5c37c8619
|
Shushed a little, so as to be able to see a reasonable amount of output during my lifetime.
|
2017-03-19 17:38:54 -04:00 |
|
Thomas Harte
|
7c66c36d3f
|
Attempted at least to manage appropriate data storage.
|
2017-03-19 17:31:08 -04:00 |
|
Thomas Harte
|
031a68000a
|
Added a class to contain the Pitfall 2 pager and a skeleton of initial work.
|
2017-03-18 22:08:47 -04:00 |
|
Thomas Harte
|
c3d82f88a5
|
Tidied up and commented on the Activision stack implementation.
|
2017-03-18 21:01:58 -04:00 |
|
Thomas Harte
|
c033bad0b9
|
Here's MNetwork!
|
2017-03-18 20:51:49 -04:00 |
|
Thomas Harte
|
c31d85f820
|
Re-emplaced the MegaBoy. Also cut detritus from the main Atari header.
|
2017-03-18 19:02:34 -04:00 |
|
Thomas Harte
|
217fbf257e
|
CBS RAM Plus returns.
|
2017-03-18 18:56:20 -04:00 |
|
Thomas Harte
|
0b611a14b9
|
Tigervision paging returns.
|
2017-03-18 18:50:13 -04:00 |
|
Thomas Harte
|
df6861c9dc
|
Parker Bros paging is back.
|
2017-03-18 18:21:01 -04:00 |
|
Thomas Harte
|
a4cd12394e
|
Reinstated the Activision stack pager.
|
2017-03-18 18:03:48 -04:00 |
|
Thomas Harte
|
e0bca1e37b
|
Reinstated the 16 and 32 kb Atari pagers, and ensured the 6532 always starts in a valid state.
|
2017-03-18 17:34:34 -04:00 |
|
Thomas Harte
|
55ce851bb2
|
Fixed types of the 8k cartridges, ensured the 6502 starts without an IRQ request history.
|
2017-03-18 17:04:01 -04:00 |
|
Thomas Harte
|
e8d34f2eb4
|
Having farmed out the bus, the Atari itself no longer is/owns a 6502.
|
2017-03-18 16:34:41 -04:00 |
|
Thomas Harte
|
bb3daaa99b
|
Sought to reintroduce the Atari 8k paging scheme, at the same time deciding to do away with the copy and paste of holding on to ROM data.
|
2017-03-18 15:04:01 -04:00 |
|
Thomas Harte
|
36b58d03b7
|
Formalised read bus value guarantee from the 6502, fixed missing clock signal wiring on the Atari cartridge class, reintroduced CommaVid support.
|
2017-03-18 14:46:46 -04:00 |
|
Thomas Harte
|
7958459db9
|
In theory unpaged cartridges should now work. Time to debug.
|
2017-03-18 14:01:04 -04:00 |
|
Thomas Harte
|
14a76af0d3
|
Started trying to float out bus control to cartridges.
|
2017-03-17 20:28:07 -04:00 |
|
Thomas Harte
|
afbd9fd41b
|
Fixed declared line length.
|
2017-03-14 21:33:38 -04:00 |
|
Thomas Harte
|
7302703039
|
Implemented the Activision stack paging scheme.
|
2017-03-14 20:24:05 -04:00 |
|
Thomas Harte
|
97a8a96593
|
Rejigged how the memory map is handled and implemented MNetwork support.
|
2017-03-14 20:07:54 -04:00 |
|
Thomas Harte
|
3b29276228
|
Implemented the MegaBoy paging scheme.
|
2017-03-14 17:40:01 -04:00 |
|
Thomas Harte
|
b3632a4e86
|
Institutes CBS RAM Plus emulation.
|
2017-03-14 17:25:10 -04:00 |
|
Thomas Harte
|
f0d944847b
|
Fixed setting of the second 1kb.
|
2017-03-11 18:16:29 -05:00 |
|
Thomas Harte
|
add14fb43a
|
Made an attempt to implement Tigervision paging.
|
2017-03-11 17:44:35 -05:00 |
|
Thomas Harte
|
33bda2d40c
|
Switched to image inspection for RAM guesses rather than disassembly. Which fixes the other Parker Bros titles.
|
2017-03-11 13:04:23 -05:00 |
|
Thomas Harte
|
2b5e3a600e
|
Made a first attempt at implementing the Parker Bros pager within the emulation.
|
2017-03-11 12:43:12 -05:00 |
|
Thomas Harte
|
9c72ce5bd2
|
Ensured a settling delay is permitted before an NTSC/PAL decision is made. To avoid false switches just due to startup.
|
2017-03-06 19:37:35 -05:00 |
|
Thomas Harte
|
79784a8e57
|
Followed tip: missiles are locked to the position after four output pixels, not four input pixels.
|
2017-03-04 22:23:50 -05:00 |
|
Thomas Harte
|
4751615623
|
Fixed NTSC colour cycle count, and hence the 2600's reported line lengths and phase offset.
|
2017-03-04 17:31:39 -05:00 |
|
Thomas Harte
|
d3257c345a
|
Tested against public ROMs and corrected. Also moved the deferred adjustment into a more canonical place.
|
2017-03-04 17:00:28 -05:00 |
|
Thomas Harte
|
837cccdf83
|
Switched to deferred updates for the 6532.
|
2017-03-04 14:58:28 -05:00 |
|
Thomas Harte
|
93d1573481
|
Added a fix for certain homebrews.
|
2017-03-01 07:59:25 -05:00 |
|
Thomas Harte
|
893a5dd007
|
Added an artificial low pass filter, attempting to capture post-digital effects.
|
2017-02-28 21:29:55 -05:00 |
|
Thomas Harte
|
06dd98b23c
|
Pulled the reset time for horizontal blank extend up to position 224.
|
2017-02-28 20:28:54 -05:00 |
|
Thomas Harte
|
184c8ae707
|
Extended to emulate the CommaVid.
|
2017-02-27 20:50:59 -05:00 |
|
Thomas Harte
|
9d7985c1e1
|
Added Super Chip emulation.
|
2017-02-26 17:47:29 -05:00 |
|
Thomas Harte
|
e6a84fd26b
|
Attempted a hardware-correct implementation of missile-to-player latching. This completes the last of the **knowing** inaccuracies. The rest are as-of-yet unwitting.
|
2017-02-26 15:12:31 -05:00 |
|
Thomas Harte
|
440467ea3e
|
Started communicating which copy is being requested.
|
2017-02-26 13:39:25 -05:00 |
|
Thomas Harte
|
98376de9ad
|
Started returning 'no effect' for pot ports, rather than doing nothing. Still very much TODO though.
|
2017-02-25 22:58:58 -05:00 |
|
Thomas Harte
|
e61e355251
|
Moved to the maximum possibly required queue length of 4. Though the emulated 2600 should never need more than 2 slots as per the current calling pattern, it's not a contractual guarantee.
|
2017-02-25 17:25:10 -05:00 |
|
Thomas Harte
|
c898c8a99e
|
Ensured the missiles and ball don't attempt to enqueue. Because I don't think they're supposed to.
|
2017-02-25 17:13:22 -05:00 |
|
Thomas Harte
|
8c9062857c
|
Added a single-slot queue for player objects to defer drawing, thereby deferring pixel lookup. Which I think is correct. Though more slots might be needed.
|
2017-02-25 17:10:24 -05:00 |
|
Thomas Harte
|
77ed4ddc05
|
Slightly simplified ready line release logic.
|
2017-02-23 21:08:32 -05:00 |
|
Thomas Harte
|
82f392fada
|
This should be the other way around. I want whichever is later.
|
2017-02-22 21:54:49 -05:00 |
|
Thomas Harte
|
8291a63d5f
|
Fixed loss of audio when switching to PAL.
|
2017-02-22 21:15:37 -05:00 |
|
Thomas Harte
|
6120dae61a
|
While I'm using the hacky approach to player/missile synchronisation, I need to seed adder.
|
2017-02-22 07:39:11 -05:00 |
|
Thomas Harte
|
4f5f191cd6
|
Fixed: will no longer attempt to output pixels from before the pixel part of a line on which sync was disabled abruptly.
|
2017-02-22 07:33:36 -05:00 |
|
Thomas Harte
|
21abf4e9fc
|
Enshrined a terminology switch, albeit without any flow change behind it.
|
2017-02-22 07:29:48 -05:00 |
|
Thomas Harte
|
144d6b70d9
|
Minor cleaning.
|
2017-02-22 07:14:30 -05:00 |
|
Thomas Harte
|
b769f22ca0
|
Switched back to the collision_buffer_ being part of the TIA object, added one more assert.
|
2017-02-21 22:26:20 -05:00 |
|
Thomas Harte
|
7019d396d0
|
Threw in some asserts, discovering a bug in missile positioning.
|
2017-02-21 22:04:27 -05:00 |
|
Thomas Harte
|
f4447fd9cd
|
Attempted to fix failure of sprites properly to wrap when performing motion.
|
2017-02-21 21:53:09 -05:00 |
|
Thomas Harte
|
36396b3d62
|
Made a slightly better, albeit still inaccurate, version of missile-player lock.Enough for Combat to do reasonable things.
|
2017-02-21 20:45:20 -05:00 |
|
Thomas Harte
|
d1dbf8c21f
|
Missile to player lock is supposed to be a toggle; also factored out the commonalities of missile and ball drawing.
|
2017-02-21 07:58:37 -05:00 |
|
Thomas Harte
|
1bde0fed6f
|
Simplified relationship between Objects and the usage-specific components through inheritance.
|
2017-02-21 07:37:20 -05:00 |
|
Thomas Harte
|
7ab2358bba
|
Made an attempt to reintroduce missiles.
|
2017-02-20 22:22:39 -05:00 |
|
Thomas Harte
|
99547181f1
|
Attempted to template this thing. Without yet a plan in place for pixel lookup timing.
|
2017-02-20 21:42:59 -05:00 |
|
Thomas Harte
|
2bf784535c
|
Simplified calllng.
|
2017-02-20 18:04:40 -05:00 |
|
Thomas Harte
|
57f434c199
|
Reorganised state, with an eye towards unifying object motion and triggers.
|
2017-02-20 17:58:28 -05:00 |
|
Thomas Harte
|
99a35266e1
|
Attempted to bring frequency-switching logic into the cross-platform realm. Which for now creates an issue with the OpenGL context.
|
2017-02-19 21:20:37 -05:00 |
|
Thomas Harte
|
51bcaea60c
|
Disabled incorrect 'optimisations'.
|
2017-02-19 12:00:04 -05:00 |
|
Thomas Harte
|
e00339ef0a
|
Attempted to reintroduce the ball.
|
2017-02-19 08:02:54 -05:00 |
|
Thomas Harte
|
53cd125712
|
Added stub calls to draw the missiles and ball.
|
2017-02-19 07:28:24 -05:00 |
|
Thomas Harte
|
04693b067c
|
Fixed failure of the optimised route to pump the pixel clock; removed optimisation entirely for now.
|
2017-02-18 21:36:48 -05:00 |
|
Thomas Harte
|
cd7876a746
|
Reintroduced the extra clocking delay.
|
2017-02-18 20:18:50 -05:00 |
|
Thomas Harte
|
ed5ff49ef5
|
Fixed vertical delay, retreated from my previous thought about adding the one extra cycle of sprite delay, at least temporarily.
|
2017-02-16 20:52:01 -05:00 |
|
Thomas Harte
|
8d502a0b03
|
Decided not to run before I can walk and switched to storing the motion time and next step explicitly per object.
|
2017-02-16 20:28:37 -05:00 |
|
Thomas Harte
|
5ea232310f
|
Added a check against negative runs.
|
2017-02-16 18:55:58 -05:00 |
|
Thomas Harte
|
09309aa74f
|
Attempted to prevent extraneous moves.
|
2017-02-16 18:52:39 -05:00 |
|
Thomas Harte
|
b5357860b9
|
Made an attempt to split things apart so as to be able to introduce the proper sprite latency.
|
2017-02-14 20:56:16 -05:00 |
|
Thomas Harte
|
cd90118a0f
|
Added two, extraordinarily simple tests.
|
2017-02-12 20:32:53 -05:00 |
|
Thomas Harte
|
25776de59d
|
I think unit testing this thing is the only way forwards. Started adding appropriate hooks.
|
2017-02-12 19:55:02 -05:00 |
|
Thomas Harte
|
600bdc9af7
|
In C++, I think the implicit cast to bool negates the need for any manual collapsing?
|
2017-02-12 18:18:35 -05:00 |
|
Thomas Harte
|
0c9be2b09e
|
Shunted the collisions buffer onto a separate area of the heap for the time being, as a debugging aid. Also added a few more initial values.
|
2017-02-12 18:16:50 -05:00 |
|
Thomas Harte
|
df8a5cbe6d
|
Made attempts (i) to respect the delay flag; and (ii) to account for border-region sprite clocking.
|
2017-02-12 17:35:09 -05:00 |
|
Thomas Harte
|
9ce68c38ae
|
Made an effort to implement proper pixel output for sprites.
|
2017-02-12 14:01:50 -05:00 |
|
Thomas Harte
|
40954d6a2a
|
Attempted to factor out parts I expect to reuse for missiles and the ball.
|
2017-02-12 11:31:17 -05:00 |
|
Thomas Harte
|
ac444a3f34
|
Corrected both position increments and target time calculation.
|
2017-02-11 21:24:14 -05:00 |
|
Thomas Harte
|
b8abeced6d
|
Made an attempt to introduce the proper eventful loop for player output. With debugging yet to occur.
|
2017-02-11 21:01:58 -05:00 |
|
Thomas Harte
|
aeff59addc
|
Implemented motion 'correctly', for programs written to do all work outside of the pixel area.
|
2017-02-11 20:25:49 -05:00 |
|
Thomas Harte
|
aff69dbc34
|
Resolved spurious static analyser issue; screen mode will always be 0–6 but it doesn't know that. Setting a non-zero divider doesn't feel worth worrying about for a cleaner compile.
|
2017-02-11 13:35:22 -05:00 |
|
Thomas Harte
|
6381e4e1b0
|
All that's happened to position is that numbers have been added to it. So it can't be negative, given that it wasn't before. So a regular modulo will do.
|
2017-02-11 13:34:36 -05:00 |
|
Thomas Harte
|
905ed1f87b
|
Switched to the more natural type, which is also signed, making my logic less prone to error.
|
2017-02-11 13:16:53 -05:00 |
|
Thomas Harte
|
8de6caf6ff
|
Started trying to get into a proper structure here. Chickened out.
|
2017-02-11 12:59:13 -05:00 |
|
Thomas Harte
|
40d3f5f7f6
|
Attempted properly to respect start .
|
2017-02-11 08:26:09 -05:00 |
|
Thomas Harte
|
64d5712d1d
|
Added an incorrectly-coded version of horizontal move, at least so that I can verify that information is going into the correct slots.
|
2017-02-10 07:23:43 -05:00 |
|
Thomas Harte
|
3b20d862f0
|
Made an initial attempt to mark sprite positions. But without hmove implemented, they're all over the place.
|
2017-02-09 20:53:42 -05:00 |
|
Thomas Harte
|
2e9ef2b0ef
|
Took a shot at reinstating the horizontal blank extend flag.
|
2017-02-09 18:37:19 -05:00 |
|
Thomas Harte
|
70745286a5
|
Ensured this array is properly aligned for the uin32_t accesses I intend to make for background drawing.
|
2017-02-08 20:25:23 -05:00 |
|
Thomas Harte
|
dcb7584060
|
Added the four-cycle playfield output latency and ensured you can't get smaller-than-usual pixels by rapid register value changing.
|
2017-02-08 07:30:32 -05:00 |
|
Thomas Harte
|
a477499724
|
Got a bit more explicit with range returned by get_cycles_until_horizontal_blank and hence attempted a more thorough (/correct) version of WSYNC.
|
2017-02-07 22:14:45 -05:00 |
|
Thomas Harte
|
944d835eea
|
Switched explicitly to an accumulation model for filling the collision buffer.
|
2017-02-06 21:59:28 -05:00 |
|
Thomas Harte
|
8f5039130c
|
Changed index naming order to ensure no out-of-bounds accesses.
|
2017-02-06 21:48:41 -05:00 |
|
Thomas Harte
|
ba165bb70a
|
Made an attempt properly to populate collision registers from the collision buffer.
|
2017-02-06 21:15:55 -05:00 |
|
Thomas Harte
|
474e2e8d2c
|
Fixed once again to respect mid-line palette changes.
|
2017-02-06 20:09:12 -05:00 |
|
Thomas Harte
|
8b8eb787df
|
Fixed complete invisibility.
|
2017-02-06 18:42:58 -05:00 |
|
Thomas Harte
|
66bcdd36f3
|
Made an attempt to introduce an intermediate buffer that ends up with a bit mask of all graphical components present on it, and to use that to infer collision flags and colours, based on playfield priority and colour palette. Immediately yielding: a blank screen. Good work!
|
2017-02-06 18:29:00 -05:00 |
|
Thomas Harte
|
6bcf95042c
|
Started trying to be a bit more explicit about usage, and to divide up drawing responsibility.
|
2017-02-05 17:51:56 -05:00 |
|
Thomas Harte
|
f2437cb257
|
Added some additional documentation, started making steps towards returning sprites, fixed a counter bug that would exhibit as incorrect sync.
|
2017-01-31 20:30:32 -05:00 |
|
Thomas Harte
|
abe04334c2
|
Attempted to retain more player information, and removed the output cursor from class storage as I think it's acceptable as a temporary.
|
2017-01-30 22:42:27 -05:00 |
|
Thomas Harte
|
8545707b54
|
Reinstituted the playfield. Probably needs more buffering though. Time to look into delays.
|
2017-01-30 21:38:58 -05:00 |
|
Thomas Harte
|
2b08758b2b
|
Started capturing playfield/ball and background colours.
|
2017-01-30 08:08:03 -05:00 |
|
Thomas Harte
|
764b528891
|
Made a first attempt at switching to a model that respects blank and sync.
|
2017-01-30 07:19:19 -05:00 |
|
Thomas Harte
|
92754ace7a
|
Some mild fixes get me up to having a rolling screen of vertical lines. Which is what I was hoping for right now!
|
2017-01-29 22:16:23 -05:00 |
|
Thomas Harte
|
d51f185dc7
|
Made an attempt to reintroduce the basic horizontal loop.
|
2017-01-29 15:43:57 -05:00 |
|
Thomas Harte
|
2390358c24
|
Prevented unbounded CPU usage, albeit without yet deciding who has authority for the clock rate.
|
2017-01-29 14:19:26 -05:00 |
|
Thomas Harte
|
2432a3b4d7
|
Fixed condition — >= is smarter.
|
2017-01-29 14:00:01 -05:00 |
|
Thomas Harte
|
9c3597c7e3
|
Attempted to reintroduce enough logic to handle [most of] line timing, such that WSYNC works. Initial objective is to get back to having a working background.
|
2017-01-29 13:47:36 -05:00 |
|
Thomas Harte
|
fba6baaa9c
|
Stubbed and disabled to get back to building.
|
2017-01-28 21:56:01 -05:00 |
|
Thomas Harte
|
a246530953
|
Supposing the TIA were implemented, this is (more or less) what the Atari 2600 would now look like.
|
2017-01-28 21:46:40 -05:00 |
|
Thomas Harte
|
0ffded72a6
|
Created a placeholder class for a factored-out TIA. There's a bit more it'll need to do, like vending (or receiving) a CRT but this is the full hardware stuff, I think.
|
2017-01-28 16:19:08 -05:00 |
|
Thomas Harte
|
6d087ca054
|
Restored 2600 audio.
|
2017-01-25 21:29:19 -05:00 |
|
Thomas Harte
|
be1cb2a551
|
Fixed NTSC phase.
|
2017-01-11 21:31:24 -05:00 |
|
Thomas Harte
|
6153ada33b
|
Fixed Electron's support for automatically booting floppy disks.
|
2017-01-08 14:46:19 -05:00 |
|
Thomas Harte
|
8cd1575891
|
Similar fix to that over in Oric land: ensure a known, effective initial value for the Plus 3's control register.
|
2016-12-28 18:52:36 -05:00 |
|
Thomas Harte
|
90151e2094
|
Fixed to ensure a known initial control register value, which has taken effect.
|
2016-12-28 18:49:32 -05:00 |
|
Thomas Harte
|
a568172758
|
Made steps towards proper CRC generation. Am currently comparing against Oric disk images, as — amongst other things — they include precomputed CRCs.
|
2016-12-28 18:29:37 -05:00 |
|
Thomas Harte
|
4fca30b81f
|
Made the Plus 3 less chatty, documented invalidate_track .
|
2016-12-25 21:06:58 -05:00 |
|
Thomas Harte
|
3805e3d17d
|
Ensured base address is set properly at construction.
|
2016-12-22 22:46:02 -05:00 |
|
Thomas Harte
|
63107cd492
|
Tidied, very slightly.
|
2016-12-15 19:49:25 -05:00 |
|
Thomas Harte
|
a555c5762a
|
Rearranged code, hopefully into a more logical grouping.
|
2016-12-15 19:47:04 -05:00 |
|
Thomas Harte
|
4a7ddaf2e9
|
Added documentation and a quick note to self.
|
2016-12-15 19:43:04 -05:00 |
|
Thomas Harte
|
f61176cd7d
|
Reinstituted something of the don't-do-pixel-work-until-an-affecting-write-occurs optimisation.
|
2016-12-15 19:20:14 -05:00 |
|
Thomas Harte
|
c1c70a767a
|
Attempted fully to reinstate proper timing.
|
2016-12-15 18:52:16 -05:00 |
|
Thomas Harte
|
0326316bb8
|
Reinstated whole-frame counting. Thereby to reinstate proper interrupts.
|
2016-12-15 18:09:49 -05:00 |
|
Thomas Harte
|
b58b11fc93
|
Switched to a table-based dispatch of line-by-line actions, primarily to simplify.
|
2016-12-15 18:07:46 -05:00 |
|
Thomas Harte
|
fd541e1142
|
An early draft; dealing with the issue that not all cycles are necessarily consumed in a single call. Incomplete; broken. Committing for cross-machine visibility.
|
2016-12-12 08:01:10 -05:00 |
|
Thomas Harte
|
be7e05e109
|
Started attempting to move total responsibility for display-related interrupts and RAM timing into the video.
|
2016-12-11 18:34:49 -05:00 |
|
Thomas Harte
|
c5cf8d9531
|
Ensured the video subsystem correctly handles requests to run over a frame boundary.
|
2016-12-11 16:17:51 -05:00 |
|
Thomas Harte
|
52028432e1
|
Restored some semblance of output.
|
2016-12-10 22:19:10 -05:00 |
|
Thomas Harte
|
0aae1bd1ef
|
Fixed calculation of termination cycle.
|
2016-12-10 21:35:41 -05:00 |
|
Thomas Harte
|
c43e481a33
|
Started factoring video out of the Electron.
|
2016-12-10 21:07:52 -05:00 |
|
Thomas Harte
|
e62be03673
|
Removed endianness assumption.
|
2016-12-10 19:10:33 -05:00 |
|
Thomas Harte
|
a5683dfb21
|
Removed now untrue comment.
|
2016-12-10 15:19:48 -05:00 |
|
Thomas Harte
|
0e71802b92
|
Reduced Oric video to single nibble constants. Removed attempt at asynchronous flush as no longer required.
|
2016-12-10 14:17:46 -05:00 |
|
Thomas Harte
|
580f347727
|
Fixed Oric SCART mode by having it change what it's giving to the CRT based on which shader it knows will be active.
|
2016-12-10 13:55:56 -05:00 |
|
Thomas Harte
|
a549fd1ecc
|
Introduced the ability simply to piggy-back off the CRT's natural phase for the colour burst, thereby eliminating a couple of redundant independent attempts in the Oric and Electron.
|
2016-12-10 13:42:34 -05:00 |
|
Thomas Harte
|
6cdd41e5a9
|
Added direct use of the colour ROM, uploading 16 bits per pixel to contain the entire ROM composite wave.
|
2016-12-09 22:17:10 -05:00 |
|
Thomas Harte
|
3b5962b171
|
This is an initial attempt at using the actual Oric colour ROM values for composite video generation.
|
2016-12-09 20:01:27 -05:00 |
|
Thomas Harte
|
c304db0f5a
|
Deintegrated the busy flag and the interrupt request line, as the latter is reset by status reads. Which also means I can start reporting the WD INTRQ line status directly from the Microdisc. That appears to be correct, rather than honouring the Microdisc IRQ select there.
|
2016-12-06 21:16:29 -05:00 |
|
Thomas Harte
|
ebb62a2d78
|
Switched the 2600 to postfix and non-camel-case instance variable names.
|
2016-12-03 14:07:38 -05:00 |
|
Thomas Harte
|
b81c058c0a
|
Factored out the Atari 2600's 6532 connection, as a low-hanging fruit.
|
2016-12-03 13:41:55 -05:00 |
|
Thomas Harte
|
3361d6b93a
|
Factored out the Atari 2600 speaker and adjusted it to postfix underscores.
|
2016-12-03 13:39:46 -05:00 |
|
Thomas Harte
|
1b1a8d3e52
|
Brought the Vic-20 into suffix naming.
|
2016-12-03 13:30:27 -05:00 |
|
Thomas Harte
|
063a62372f
|
The Commodore serial bus and C1540 are now postfix underscorers.
|
2016-12-03 13:14:03 -05:00 |
|
Thomas Harte
|
eb3a1fbfb7
|
Commuted remaining Electron underscores. It would be nice also to factor out the video, but the time hasn't come yet.
|
2016-12-03 13:01:01 -05:00 |
|
Thomas Harte
|
4fac538a57
|
Factored out the Electron's speaker and adjusted instance variable naming.
|
2016-12-03 12:41:02 -05:00 |
|
Thomas Harte
|
d1d93829cf
|
Factored out the Tape and switched it to postfix underscores.
|
2016-12-03 12:18:08 -05:00 |
|
Thomas Harte
|
2003b514aa
|
Switched the typer to postfix underscores.
|
2016-12-03 10:55:50 -05:00 |
|
Thomas Harte
|
81ee834530
|
As well as a bunch of logging, reinstated rotation position preservation across tracks.
|
2016-12-02 18:36:47 -05:00 |
|
Thomas Harte
|
93c573bfa9
|
Implemented missing status bits (other than the index hole), and a head loading delay for the Microdisc.
|
2016-12-01 21:13:16 -05:00 |
|
Thomas Harte
|
442986ee2c
|
Introduced a head loading path for 1793 machines.
|
2016-12-01 20:12:22 -05:00 |
|
Thomas Harte
|
82899f2f47
|
Ensured flag setting is atomic, removed duplication of interrupt request versus busy, found better names for the personality testers, unified delegate protocol.
|
2016-12-01 07:41:52 -05:00 |
|
Thomas Harte
|
9b6c5e814a
|
Now that it can be more explicit, this should admit that it's '93-based, not '73.
|
2016-11-28 16:22:35 -05:00 |
|
Thomas Harte
|
2f459690d4
|
It would appear the 1770 and 1773 actually differ in relation to the (non-sensical) ability not to spin-up for a Type 2, and whether a side compare can occur. So the WD1770 class now requires a personality to be specified. Which it singly fails to honour.
|
2016-11-26 23:29:30 +08:00 |
|
Thomas Harte
|
e9d6566e9c
|
Of course, changing the IRQ enable may immediately change the IRQ line. Signal if so.
|
2016-11-26 09:35:44 +08:00 |
|
Thomas Harte
|
73d30b9c00
|
Corrected typo.
|
2016-11-25 21:30:45 +08:00 |
|
Thomas Harte
|
12956901d6
|
Filled in some register mirrors.
|
2016-11-25 21:28:11 +08:00 |
|
Thomas Harte
|
54246c8f1a
|
Interrupt enabling works the other way around I think, and both registers with only one bit defined should probably return '1' in all other places?
|
2016-11-25 21:24:59 +08:00 |
|
Thomas Harte
|
8be81f6ebd
|
Supplied disks are given to the Microdisc.
|
2016-11-25 20:53:38 +08:00 |
|
Thomas Harte
|
4af678d2ed
|
Gave the Microdisc a clock signal, added just enough of force interrupt to avoid a spurious belief that a type 3 command has started.
|
2016-11-25 20:51:39 +08:00 |
|
Thomas Harte
|
5c019ad1c0
|
Okay, so it looks like both ROM paging flags are the opposite of what I previously had.
|
2016-11-25 20:42:40 +08:00 |
|
Thomas Harte
|
5be45c6c50
|
Ensured proper default behaviour.
|
2016-11-25 20:30:27 +08:00 |
|
Thomas Harte
|
d33f3b9224
|
This is the broad strokes effort at enabling Microdisc emulation.
|
2016-11-25 20:15:48 +08:00 |
|
Thomas Harte
|
7c2d9f3752
|
This seems to be right, per http://wiki.defence-force.org/doku.php?id=oric:hardware:floppy_disk_controller_wd1793
|
2016-11-22 22:35:43 +08:00 |
|
Thomas Harte
|
5ebc1c63ff
|
Switched video to postfix underscores, for consistency.
|
2016-11-22 22:28:45 +08:00 |
|
Thomas Harte
|
707763f80b
|
Added Microdisc storage to the Oric class, switching all instance storage to postfix underscore while I'm here.
|
2016-11-22 22:22:00 +08:00 |
|
Thomas Harte
|
0c3644f350
|
Made a second parse at logic. We'll see.
|
2016-11-22 22:12:32 +08:00 |
|
Thomas Harte
|
03843bf934
|
Unified delegates. Let's keep it easy for the caller.
|
2016-11-22 22:11:11 +08:00 |
|
Thomas Harte
|
13a608a8c2
|
Added what may be correct paging logic.
|
2016-11-22 22:09:52 +08:00 |
|
Thomas Harte
|
363db695e8
|
Started implementation of the Microdisc selection logic.
|
2016-11-22 08:12:53 +08:00 |
|