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Author SHA1 Message Date
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
c8cee88e33 Ensured that a stopped tape outputs a false level and took an extra safety check in instantiation. 2017-07-18 22:49:11 -04:00
Thomas Harte
35296017b5 Clarified meaning of is_high_ flag and ensured it is honoured properly. 2017-07-17 21:36:05 -04:00
Thomas Harte
130d598ec9 Corrected some minor out-of-style breaks, and ensured that the name of ZX81 files is returned. 2017-07-17 19:52:54 -04:00
Thomas Harte
0350925c1e Started sketching out greater support. Mostly TODOs right now, but pulse sequence and pure tone are implemented. I probably also need at least the CSW block to hit everything you might see in a ZX80 or ZX81 tape. Then I can worry about the rest when I have a way to test them. 2017-07-17 19:38:15 -04:00
Thomas Harte
94e3dd0d4f Merge branch 'master' into TZX 2017-07-17 19:07:05 -04:00
Thomas Harte
5d44422230 Merge pull request #152 from TomHarte/CSWLength 
Corrects a false assumption about decompressed CSW size
 2017-07-17 19:06:43 -04:00
Thomas Harte
eafdd7dbd7 Corrected decompressed size expectations: it may be up to five times the size of the number of waves, as waves are up to five bytes in length. 2017-07-17 19:04:25 -04:00
Thomas Harte
127b584e79 Ensured that resetting a TZX resets the is-at-end flag. 2017-07-17 07:52:28 -04:00
Thomas Harte
2179edc7fe Adjusted to allow the very first thing found to be data, and ensured that unrecognised symbols break files just as gaps do. 2017-07-17 07:43:47 -04:00
Thomas Harte
9108495586 Added a safety seek. 2017-07-17 07:35:53 -04:00
Thomas Harte
fa617eac6b Spotted that pilot and data segments have different encodings — of course! — and attempted to adapt. 2017-07-17 07:34:10 -04:00
Thomas Harte
b63971caf7 Took a first, incorrect, shot at TZX chunk 0x19, the generalised data block. 2017-07-16 22:40:38 -04:00
Thomas Harte
7327da6350 Switched the nascent TZX to use the new PulseQueuedTape. 2017-07-16 22:06:56 -04:00
Thomas Harte
8f72fc4a44 Factored out from the UEF implementation the concept of being a tape that has a queue of pending pulses and manages that queue. 2017-07-16 22:04:40 -04:00
Thomas Harte
238348c885 Performed the initial wiring to announce that this application supports TZX files and to route them to the ZX80/81 static analyser. The TZX class itself does not yet do much beyond basic validation. I think it'll be easiest if it follows in UEF's footsteps in queuing up pulses ahead of time, so some factoring out is now required. 2017-07-16 21:33:11 -04:00
Thomas Harte
7b5f93510b Fixed the DigitalPhaseLockedLoopBridge bridge, once again fixing tests. 2017-07-16 20:55:57 -04:00
Thomas Harte
b3861ff755 Reduced copying of Pulses. 2017-07-16 19:49:31 -04:00
Thomas Harte
5a6b7219b9 Merge pull request #150 from TomHarte/PLLParsing 
Introduces PLL-driven tape parsing of Acorn tapes
 2017-07-16 19:28:51 -04:00
Thomas Harte
c2bc34fd87 Eliminated the PLLParser class. I think the proper abstraction if and when another machine requires PLL-esque parsing is probably to template out the Acorn wiring of a PLL to a Parser, and/or generalise the Acorn shifter. It'll be easier to decide when the time comes. 2017-07-16 19:25:26 -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
8ddd686049 Removed redundant variable. 2017-07-16 19:04:03 -04:00
Thomas Harte
e5188a60dc Settled on the new average-of-length approach to a PLL window sizing, eliminating the old errors-of-phase approach. Since it anchors automatically to the original target clocks per bit, killed the explicit mention of a tolerance. 2017-07-16 19:03:50 -04:00
Thomas Harte
e71d13c090 With the new PLL implementation, switching to a deeper window size returns the Acorn tape parser to: working. 2017-07-16 17:12:12 -04:00
Thomas Harte
ba83dfd454 Merge branch 'master' into PLLParsing 2017-07-16 17:01:00 -04:00
Thomas Harte
2fb0aea990 Updated the C1540 test vessel to the new world. 2017-07-16 17:00:39 -04:00
Thomas Harte
51177e4e1f Attempted a different implementation of the PLL, that responds to changes only once. 2017-07-16 16:49:04 -04:00
Thomas Harte
004d6da9fb Merge branch 'master' into PLLParsing 2017-07-16 15:03:13 -04:00
Thomas Harte
561373e793 Merge pull request #149 from TomHarte/BetterVectors 
Corrects some long-standing unnecessarily convoluted ways to handle semi-dynamic arrays
 2017-07-16 15:02:52 -04:00
Thomas Harte
279f4760d7 Eliminated buffer_size_ as something explicitly stored, and reduced size of delegate call out. 2017-07-16 15:01:39 -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 newing for myself. So, some of my earliest bits of code. 2017-07-16 13:54:07 -04:00
Thomas Harte
ab51bc443b Eliminated foolish double indirection on phase history. 2017-07-16 13:39:41 -04:00
Thomas Harte
c8575fe6e0 Mild clean ups, and a tweak to permitted top and bottom phase. 2017-07-16 13:39:08 -04:00
Thomas Harte
4489f120f9 Eliminated foolish double indirection on phase history. 2017-07-15 22:40:38 -04:00
Thomas Harte
253f9603ed Split the normal tape parser class into two in order to add a new option: a PLL-driven tape parser. Decided to see what happens if I attempt to use that to parse CSW Acorn data. 2017-07-15 19:07:35 -04:00
Thomas Harte
6ca712b498 Merge pull request #148 from TomHarte/CSW 
Adds support for the CSW file format
 2017-07-15 15:33:05 -04:00
Thomas Harte
b743566339 Corrected under-request of data: was erroneously supplying the size of input as the expected size of output. 2017-07-15 15:19:03 -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
fc8313430a Added an early exit if what was read as a header turns out pretty much certainly not to be a header. 2017-07-13 21:26:45 -04:00
Thomas Harte
648618d280 Tweaked bit timing decision. 2017-07-13 21:26:05 -04:00
Thomas Harte
ae1a130843 Fixed: length of 0 is a special case. 2017-07-13 20:57:27 -04:00
Thomas Harte
33d16ae0cd Fixes: individual static analysers reset tapes, for potential successors. The ZX81 file analyser no longer overruns its buffer upon receiving a file that is shorter than 11 bytes. 2017-07-12 21:34:08 -04:00
Thomas Harte
f09fe30af5 Attempted a full implementation of CSW. All in memory for now. 2017-07-12 21:23:59 -04:00
Thomas Harte
33eadb5549 Started taking further steps towards CSW support; reading the ZLib documentation is next. 2017-07-11 22:41:10 -04:00
Thomas Harte
368bff1a82 Added a shell class that will one day be able to parse CSW files, plus the logic and metadata to instantiate it when a CSW presents itself. 2017-07-10 21:43:58 -04:00
Thomas Harte
d853841dd5 Further lightened up my file-is-ZX81 check. 2017-07-10 20:44:13 -04:00
Thomas Harte
eacaafeb48 Merge pull request #147 from TomHarte/ZX8081Typer 
Introduces preliminary `Typer` support for the ZX80 and ZX81
 2017-07-09 22:30:30 -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