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Author SHA1 Message Date
Thomas Harte
0f4343cd84 Merge pull request #177 from TomHarte/DSKFileFormat 
Introduces parsing of the file format support for the simplest of CPC disks
 2017-08-05 11:55:13 -04:00
Thomas Harte
192f232d3f Silenced warnings. 2017-08-05 11:53:29 -04:00
Thomas Harte
6e4d3b8a77 Added enough logic to produce some sort of version of a completely unprotected DSK. So enough to start bootstrapping an FDC emulation, at least. 2017-08-05 11:44:53 -04:00
Thomas Harte
8eda24261c Removed unnecessary header — it's implied by being a child of FileHolder. 2017-08-05 11:44:06 -04:00
Thomas Harte
75c59fefab Added an empty husk to begin support for Amstrad CPC disk image formats. 2017-08-05 10:02:10 -04:00
Thomas Harte
4b19cf60df Added omitted semicolon. 2017-08-05 09:18:55 -04:00
Thomas Harte
2b476554e7 Merge pull request #176 from TomHarte/AYDeferrer 
Corrects the CPC's handling of AY time accumulation
 2017-08-05 09:13:47 -04:00
Thomas Harte
b3788fed41 Fixed AY queuing behaviour as handled by the Amstrad. I think I need to come up with clearer semantics here. 2017-08-05 09:12:17 -04:00
Thomas Harte
b999c1d8aa Merge branch 'FilteredSync' 2017-08-04 16:52:14 -04:00
Thomas Harte
a63aa80dc9 Merge branch 'master' of github.com:TomHarte/CLK 2017-08-04 16:51:52 -04:00
Thomas Harte
63f57c8c4f Adjusted visible portion of frame; completely empirical, as I'm chasing a machine that shipped with a monitor. 2017-08-04 16:51:46 -04:00
Thomas Harte
7e6a6365c9 Adjusted visible portion of frame; completely empirical, as I'm chasing a machine that shipped with a monitor. 2017-08-04 16:50:58 -04:00
Thomas Harte
3dbf26ac49 Merge pull request #175 from TomHarte/FilteredSync 
Introduces filtering of the CRTC's hsync signal into the gate array.
 2017-08-04 16:38:52 -04:00
Thomas Harte
f075fea78c Introduces filtering of the CRTC's vsync signal into the gate array. 2017-08-04 16:36:55 -04:00
Thomas Harte
cc8380c286 Merge pull request #174 from TomHarte/ProperBorder 
Removes quick-hack solution for border drawing
 2017-08-04 12:15:22 -04:00
Thomas Harte
c0f0c68f4f Corrects quick-hack version of border drawing: the assumption that the colour must be the same over a plotted period. Also corrects my entry for colour 15. 2017-08-04 12:13:05 -04:00
Thomas Harte
c2bb019381 Merge pull request #173 from TomHarte/TimingFixes 
Corrects two misimplementations of the CPC's interrupt counter
 2017-08-04 09:06:42 -04:00
Thomas Harte
26ce6cdab2 Permitted register 3 to dictate vertical sync length. 2017-08-04 08:56:36 -04:00
Thomas Harte
d9097facf1 Found documentation that makes more sense, and in practice seems to be more correct: the test after vertical sync is for greater than 32, not less. Also I decided to chance my arm on counter reset also resetting interrupt request. The raster effects of Ghouls 'n' Ghosts is now pretty much correct but one line off. I think probably either something is off in my wait-two logic on the post-vsync timer event, or possibly the vsync bit exposed via the PPI doesn't mean exactly what I think it means. 2017-08-04 08:56:09 -04:00
Thomas Harte
b927500487 Clarified code a little, but this is mostly fiddling in the margins. 2017-08-03 22:00:30 -04:00
Thomas Harte
e71eabedf9 Fixed timer clearing tet. 2017-08-03 21:30:04 -04:00
Thomas Harte
33ed27c3ad Minor tidiness: included missing headers, and spaced out the ROM type and key lists for readability. 2017-08-03 12:45:42 -04:00
Thomas Harte
45cbab6751 Merge pull request #172 from TomHarte/KeyboardMachines 
Publicly declares the ZX80/81 and Amstrad CPC as keyboard machines
 2017-08-03 12:39:22 -04:00
Thomas Harte
a7b74d6164 Merge pull request #171 from TomHarte/EverMoreTZX 
Further expands the implemented subset of the TZX file format
 2017-08-03 12:38:44 -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
a3b16b6dfa Further beefs up the list of chunks that this TZX parser can either comprehend or skip. 2017-08-03 12:13:41 -04:00
Thomas Harte
c8f4de6f11 Merge pull request #170 from TomHarte/KeyboardCraziness 
Separates knowing the mapping from ASCII to machine keys from the act of typing them
 2017-08-03 11:53:42 -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
985fbf59c2 Merge pull request #169 from TomHarte/Z80HasA 
Converts the Z80 into a BusAdaptor-type component
 2017-08-02 22:42:49 -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
42e70ef993 Adjusted slightly as per Z80 change, and to pull everything internally declared into the Amstrad CPC namespace. 2017-08-02 22:11:03 -04:00
Thomas Harte
039811ce6a Switched the Z80 to being something a machine has, not something a machine is. 2017-08-02 22:09:59 -04:00
Thomas Harte
a54ccd1969 Merge pull request #168 from TomHarte/CPC 
Adds an initial Amstrad CPC 464 emuation
 2017-08-02 20:50:02 -04:00
Thomas Harte
707821ca55 Added the normal readme to explain what's omitted here. 2017-08-02 20:45:14 -04:00
Thomas Harte
d3bf8fa53b Upped the documentation. 2017-08-02 20:37:26 -04:00
Thomas Harte
f5e2dd410e Constrained output to the centre 90%. 2017-08-02 19:55:44 -04:00
Thomas Harte
3ca9c38777 Attempted to move to more accurate bus reading — if control lines are set then all subsequent data inputs should act according to the current control lines; changes to port input should be reflected live upon readings, etc. 2017-08-02 19:45:58 -04:00
Thomas Harte
2d2cefb0b0 Adjusted factoring to introduce support for block 10. 2017-08-02 14:36:47 -04:00
Thomas Harte
2fd071e45d Made an honest attempt at outputting turbo speed data block data. The CPC now at least starts to load. 2017-08-02 14:24:34 -04:00
Thomas Harte
d7a5c3f49a Added support for the ID 20 block and fixed a minor error in my skip-the-contents version of block 11: length is three bytes long, not two. This gives me enough structure properly to get to the end of my current test CDT, albeit without making any of the noises. 2017-08-02 14:12:34 -04:00
Thomas Harte
819761f9fb Fixed another uninitialised pointer. 2017-08-02 13:56:35 -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
633d8965e2 Removed accidental logging commit. 2017-08-02 07:38:14 -04:00
Thomas Harte
f602f9b6ec Adds an attempt to clock the AY. 2017-08-02 07:21:33 -04:00
Thomas Harte
f7e66dea61 Added a compound divide and convert. 2017-08-02 07:21:21 -04:00