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mirror of https://github.com/TomHarte/CLK.git synced 2024-12-13 00:29:14 +00:00
Commit Graph

137 Commits

Author SHA1 Message Date
Thomas Harte
80d4846a27 Respond with 0xff during an interrupt acknowledge. 2021-04-18 11:56:00 -04:00
Thomas Harte
93422f4b1c Brings timings into line with WoS specs. 2021-04-16 22:40:51 -04:00
Thomas Harte
7fdb1d848b Corrects Spectrum 128kb partial decoding. 2021-04-16 21:54:52 -04:00
Thomas Harte
d7954a4cb1 Tweaks timing a little. 2021-04-15 21:51:49 -04:00
Thomas Harte
ef636da866 Attempts 48/128kb floating bus behaviour. 2021-04-15 21:19:21 -04:00
Thomas Harte
fa18b06dbf Correct get_floating_value to be consistent in out-of-bounds behaviour. 2021-04-15 21:13:36 -04:00
Thomas Harte
349b9ce502 Don't post contended accesses other than on the +2a/+3.
Those machines have an actual latch for this stuff, the others don't.
2021-04-15 21:13:06 -04:00
Thomas Harte
71cf63bd35 Corrects internal cycle contention. 2021-04-15 19:17:11 -04:00
Thomas Harte
d1bb3aada4 Attempts to complete the in-machine application of contention. 2021-04-15 18:57:34 -04:00
Thomas Harte
b4214c6e08 Blocks off the AY from inputs in 48kb mode. 2021-04-15 18:04:16 -04:00
Thomas Harte
f5c7746493 Extends fast loading support to the just-introduced models. 2021-04-15 17:31:42 -04:00
Thomas Harte
f10ec80153 Gets started on different video timings. 2021-04-14 22:23:27 -04:00
Thomas Harte
0af405aa46 Starts working in the 48kb and 128kb Spectrums. 2021-04-14 21:37:10 -04:00
Thomas Harte
60e8273de2 Tweaks video timing, again. 2021-04-06 21:04:54 -04:00
Thomas Harte
dd28246f9f Better indicate interrupt timing. 2021-04-06 12:06:13 -04:00
Thomas Harte
fd88071c0a Remove further detritus. 2021-04-05 17:21:26 -04:00
Thomas Harte
90c3d6a1e8 Attempts a later interception of tape loading. 2021-04-04 22:39:30 -04:00
Thomas Harte
f26bf4b9e4 Splitting here isn't achieving anything. 2021-04-04 19:52:38 -04:00
Thomas Harte
1da51bee6c 14368 and six seem to be the proper numbers, per my comprehension of Patrick Rak. 2021-04-04 19:52:19 -04:00
Thomas Harte
5a66956221 Merge branch 'master' into SpeccyTiming 2021-04-04 19:12:37 -04:00
Thomas Harte
d77ddaf4fa Switches the Electron to JustInTimeActor video.
Also reorders template parameters; I think that specifying a different time base is likely to be more common than using a divider.
2021-04-04 17:33:49 -04:00
Thomas Harte
afb4e6d37d Merge branch 'master' into JITSleeper 2021-04-04 15:37:19 -04:00
Thomas Harte
14663bd06b I think 3 is what I'm aiming for here.
But this probably isn't correct for IO cycles.
2021-04-02 07:36:57 -04:00
Thomas Harte
044ac949ba Rearrange fields. 2021-04-01 12:44:00 -04:00
Thomas Harte
87317f5673 Improve documentation, pin down read/write times. 2021-04-01 12:38:58 -04:00
Thomas Harte
687c05365e Flushes before set_last_contended_area_access. 2021-03-31 22:52:41 -04:00
Thomas Harte
4f80523828 Tweaks contended timing. 2021-03-31 22:51:20 -04:00
Thomas Harte
acdbd88b9e
Merge pull request #896 from TomHarte/FastLoadUponInsert
Ensure CPC and Spectrum update fast-tape flag upon media insertion.
2021-03-28 11:44:01 -04:00
Thomas Harte
729edeac6c Ensure CPC and Spectrum update fast-tape flag upon media insertion. 2021-03-27 18:08:46 -04:00
Thomas Harte
faaa4961ed Attempts to rely on JustInTimeActor's built-in ClockingHint::Observer. 2021-03-26 23:54:08 -04:00
Thomas Harte
8a11a5832c Uses GI::AY38910::Utility far and wide. 2021-03-26 23:19:47 -04:00
Thomas Harte
465ecc4a78 Attempts to implement proper floating bus behaviour.
As per http://sky.relative-path.com/zx/floating_bus.html
2021-03-24 20:23:33 -04:00
Thomas Harte
0ac11fc39e Add floating bus. 2021-03-23 17:09:42 -04:00
Thomas Harte
3d0503a35e Adds a genuine Spectrum mapping, tweaks timing. 2021-03-23 16:59:43 -04:00
Thomas Harte
496a294c71 Adds clocking observers for the tape and FDC. 2021-03-23 16:38:04 -04:00
Thomas Harte
465c74ab86 Adds the Spectrum side of typing.
The character mapper itself needs some Spectrum logic.
2021-03-23 10:44:43 -04:00
Thomas Harte
4e8f82a39c Adds ZX Spectrum activity indicators. 2021-03-23 10:32:22 -04:00
Thomas Harte
d0776b58cf Tweaks timing empirically. 2021-03-22 23:20:49 -04:00
Thomas Harte
6da099d7e1 Ensures the enter key is cleared before fast-loading tapes have loaded. 2021-03-22 22:42:10 -04:00
Thomas Harte
60e77785e8 Makes an attempt to provide the necessary hook for floating bus behaviour. 2021-03-22 22:34:28 -04:00
Thomas Harte
19cd6a55d3 Rejigs the way video is counted to orient it around fetch times. 2021-03-22 22:18:38 -04:00
Thomas Harte
08432dd94b Adds automatic media starts. 2021-03-22 20:12:03 -04:00
Thomas Harte
3c1131a84b Attempts to implement the +3. 2021-03-22 19:36:05 -04:00
Thomas Harte
3ef2715eee Implements the ROM version of fast loading. 2021-03-22 19:04:38 -04:00
Thomas Harte
4a12d7086d Makes another guess at total colour phase. 2021-03-22 17:24:38 -04:00
Thomas Harte
a6b75b8637 Attempts improvements to video fetch timing. Alas, a lot of guess work here. 2021-03-22 15:59:03 -04:00
Thomas Harte
bdb3bce8d6 Corrects semantics on contended-timing calculation. 2021-03-22 15:48:51 -04:00
Thomas Harte
a26716919c Switches to an is-in-video test that allows for video memory being paged twice.
This is trivially possible even in plain 128kb mode.
2021-03-22 15:46:02 -04:00
Thomas Harte
8dbc7649aa Adds note-to-self re: FDC. 2021-03-22 09:15:00 -04:00
Thomas Harte
42a9dc7c2b Minimises video flushing, moves it to the proper time. 2021-03-22 09:02:49 -04:00
Thomas Harte
7965772745 Moves contention delays up to the time of MREQ going active. 2021-03-21 23:04:20 -04:00
Thomas Harte
7562917740 Adds the Spectrum to the macOS New... menu. 2021-03-21 21:50:50 -04:00
Thomas Harte
3925eee575 Attempts more relaxed decoding of AY accesses. 2021-03-21 21:03:35 -04:00
Thomas Harte
6482303063 Reduces code duplication slightly. 2021-03-21 20:34:58 -04:00
Thomas Harte
9ce1dbaebb Switches to partial decoding for paging registers; permits video address changes after paging is locked. 2021-03-21 20:23:00 -04:00
Thomas Harte
064667c0c3 Corrects asymmetrical flash, ensures consistent burst phase. 2021-03-21 20:22:27 -04:00
Thomas Harte
58be770eaa Factors out some boilerplate.
When I'm confident this is correct, I can fix up the other call sites.
2021-03-21 00:14:48 -04:00
Thomas Harte
1b0f45649e Improves contended timing.
Still not quite on the money, but this was an overt bug.
2021-03-21 00:00:18 -04:00
Thomas Harte
42bfabbe8c The implication seems to be of a fixed phase swing.
I'm enquiring further.
2021-03-20 23:46:13 -04:00
Thomas Harte
07a63d62dd Adds some quick arithmetic on the clock speed. 2021-03-20 11:19:44 -04:00
Thomas Harte
26911a16e8 Lengthens sync, better to conform to PAL; experiments with fixed-phase colour burst.
I need to get hold of real documentation here.
2021-03-20 10:38:21 -04:00
Thomas Harte
cf9a5d595b Completes piping of audio. 2021-03-19 23:33:46 -04:00
Thomas Harte
7729f1f3d0 Attempts automatic Spectrum tape control. 2021-03-19 22:43:48 -04:00
Thomas Harte
7d59ff6d8f Builds in a colour burst, producing colour composite. 2021-03-19 22:25:37 -04:00
Thomas Harte
2ee478b4c4 Goes some way towards wiring up Spectrum options. 2021-03-19 22:17:20 -04:00
Thomas Harte
a482ce1546 Adds a tape player. 2021-03-19 11:12:50 -04:00
Thomas Harte
2371048ad1 Formally separates keyboard code.
With an eye to formalising the Spectrum/ZX81/ZX80 differences.
2021-03-19 10:36:08 -04:00
Thomas Harte
93b9ea67e6 Takes a run at contended timings. 2021-03-19 08:49:56 -04:00
Thomas Harte
87fac15cc4 This is going to remain purely a template; no .cpp. 2021-03-18 23:51:45 -04:00
Thomas Harte
2d51924a3c Wires up Spectrum keyboard.
The machine now appears to be fully interactive and functional. Timing and media aside, that is.
2021-03-18 23:51:21 -04:00
Thomas Harte
44240773ef Corrects address generation, ink/paper selection.
Seemingly to give a correct +2a boot. Time to add a keyboard and find out, I guess.
2021-03-18 23:30:48 -04:00
Thomas Harte
ed587a4db5 Provides a better no-port-here value. 2021-03-18 23:14:39 -04:00
Thomas Harte
020a04006e Adds flashing, randomises initial RAM contents. 2021-03-18 23:07:51 -04:00
Thomas Harte
622a8abf7f Takes a stab at pixel output. 2021-03-18 22:57:10 -04:00
Thomas Harte
871bac6c8a Marks out and approximately centres a pixel region. 2021-03-18 22:41:20 -04:00
Thomas Harte
fe3e8f87e7 Takes a shot at an all-border output. 2021-03-18 22:29:24 -04:00
Thomas Harte
87fc7c02e8 Provides a base pointer for video output. 2021-03-18 22:04:41 -04:00
Thomas Harte
f2620e6afb Adds a CRT. Not yet clocked. 2021-03-18 21:54:42 -04:00
Thomas Harte
ab2ad70885 Takes a run at interrupts. 2021-03-18 21:29:52 -04:00
Thomas Harte
135134acfd Adds a shell for video emulation. 2021-03-18 12:47:48 -04:00
Thomas Harte
5664e81d48 It appears the +2a and +3 have a different clock rate. 2021-03-18 12:41:24 -04:00
Thomas Harte
b830d62850 Adds quick notes on port FE. 2021-03-18 12:32:54 -04:00
Thomas Harte
17f551e89d Attempts a full audio wiring. 2021-03-18 12:23:54 -04:00
Thomas Harte
4a4da90d56 Implements some of the memory map, and instantiates audio objects. 2021-03-18 12:14:48 -04:00
Thomas Harte
730bfcd1fd Stumbles towards a memory map. 2021-03-18 10:43:51 -04:00
Thomas Harte
97249b0edd Slow walks further towards a functioning Spectrum. 2021-03-18 10:18:17 -04:00
Thomas Harte
5a1bda1d82 Performs boilerplate towards a ZX Spectrum class. 2021-03-17 23:38:55 -04:00