Thomas Harte
|
cc0b70828b
|
Removed attempt at multiple-file logic, at least for the time being. Starting to wonder whether I actually need anything beyond a literal streaming of bytes?
|
2016-10-16 22:15:24 -04:00 |
|
Thomas Harte
|
fae1bb0db9
|
First successful game loaded! It turns out exactly one '$' is correct. Probably.
|
2016-10-15 21:49:41 -04:00 |
|
Thomas Harte
|
952a24f769
|
A quick hard-wiring of the OricTAP code to get the first file in a .tap correct, damn the rest, and I'm getting some on-screen feedback. Hooray!
|
2016-10-15 21:39:53 -04:00 |
|
Thomas Harte
|
a608bbebfb
|
Performed enough wiring to put the onus back onto OricTAP to do appropriate things.
|
2016-10-15 21:32:59 -04:00 |
|
Thomas Harte
|
6d7c3f6ac2
|
Factored out the now-sampling binary-level tape player from the Vic and connected it up to the Oric.
|
2016-10-15 21:21:18 -04:00 |
|
Thomas Harte
|
4f78d693e9
|
Reintroduced gap as a string of 1s, made an attempt to look up bit ordering. Still unclear on high/low versus low/high.
|
2016-10-11 08:07:51 -04:00 |
|
Thomas Harte
|
70f004efbb
|
This may be feeding bits in the wrong direction or calculting the wrong parity or doing something else amiss but should now be correct as to bytes.
|
2016-10-11 07:57:10 -04:00 |
|
Thomas Harte
|
df01c78039
|
It's a bit of a mess but this is probably close to appropriate for Oric TAP files.
|
2016-10-11 07:39:48 -04:00 |
|
Thomas Harte
|
abf47efd40
|
Factored out Commodore is-a-ROM test, allowing it to be used from the Commodore analyser and thereby allowing ROMs to get as far as the machine again.
|
2016-09-29 19:39:13 -04:00 |
|
Thomas Harte
|
4010f36238
|
Ensured tape-formatted PRGs reach a conclusion.
|
2016-09-29 19:12:26 -04:00 |
|
Thomas Harte
|
ca53fac732
|
Switched to assuming a single-sided disk, moved out magic constants.
|
2016-09-26 21:20:30 -04:00 |
|
Thomas Harte
|
572d5587d9
|
Made a first stab at enabling multi-disk machines and thereby obeying (some of) the Plus 3's status register.
|
2016-09-25 21:24:16 -04:00 |
|
Thomas Harte
|
9bbcbd1001
|
Renamed class, intending to turn a Disk::Drive into literally just that, and have a thing with a PLL that consumes events be a Controller.
|
2016-09-25 20:05:56 -04:00 |
|
Thomas Harte
|
523dbb9678
|
This'll do for getting the ADF into the machine.
|
2016-09-25 18:32:26 -04:00 |
|
Thomas Harte
|
de863719d0
|
Made a first attempt at Acorn ADFS support plus the start of a suitable analyser.
|
2016-09-25 17:46:11 -04:00 |
|
Thomas Harte
|
a9e65e9b7a
|
Tweaked disk side density, added call-outs to a WD1770 if the Electron had one (albeit without run_for_cycles yet as I need to figure out the clock rate), added a shell of the basic functions of the WD1770. No implementation yet.
|
2016-09-19 22:06:56 -04:00 |
|
Thomas Harte
|
64f2538b1f
|
Added CRC checking to DFS comprehension; fixed a bunch of places where I'd used Objective-C's #import rather than #include.
|
2016-09-19 08:16:06 -04:00 |
|
Thomas Harte
|
8a1b805d11
|
Fixed file offset calculation for single-sided images.
|
2016-09-19 07:34:10 -04:00 |
|
Thomas Harte
|
b1e7f2dfd0
|
There's no cache and no CRC checking yet, but this is probably a rough outline of an FM parser.
|
2016-09-18 22:03:06 -04:00 |
|
Thomas Harte
|
d1c861d3a5
|
That should be that, I hope.
|
2016-09-18 21:09:32 -04:00 |
|
Thomas Harte
|
02c9a82cb5
|
Edging towards SSD/DSD support. Hold on!
|
2016-09-18 19:32:08 -04:00 |
|
Thomas Harte
|
91cd7e143b
|
Started on the SSD/DSD support. Realised I had ommitted multiple head support from my disk class. Fixed that.
|
2016-09-18 19:21:02 -04:00 |
|
Thomas Harte
|
5409c8ec54
|
Switched PCMSegments to std::vector; ensured generated [M]FM tracks are correctly sized, thereby making sure the individual flux windows will be correctly sized.
|
2016-09-18 18:56:35 -04:00 |
|
Thomas Harte
|
d9aaf456f0
|
Adapted pervasively to MSB-first output. Which seems to be correct.
|
2016-09-18 18:46:58 -04:00 |
|
Thomas Harte
|
180c3df2d4
|
Calling it 'number theory' probably isn't accurate but extracted the CRC stuff and started using it for [M]FM encoding.
|
2016-09-18 18:33:26 -04:00 |
|
Thomas Harte
|
55a7418cbf
|
Parameterised to perform FM and MFM encodings, at least subject to CRCs still being missing.
|
2016-09-18 17:16:20 -04:00 |
|
Thomas Harte
|
22eed60d2b
|
Started sketching out basic MFM track encoding. Which possibly even means that the shifters don't need to be public?
|
2016-09-18 16:53:21 -04:00 |
|
Thomas Harte
|
0089c830c6
|
This possibly correctly encapsultes the lowest level of FM and MFM rules.
|
2016-09-18 14:17:06 -04:00 |
|
Thomas Harte
|
bcf91de7e9
|
Declared support for the Acorn disk files, started hammering out an encoder.
|
2016-09-18 13:35:54 -04:00 |
|
Thomas Harte
|
6454508db8
|
Added a quick bit of documentation.
|
2016-09-18 10:30:52 -04:00 |
|
Thomas Harte
|
65b568003d
|
Clarified TODO.
|
2016-09-18 10:29:45 -04:00 |
|
Thomas Harte
|
8c2bf099ad
|
Cut down to one GCD and clarified variable names, getting more explicit about what's going on.
|
2016-09-18 10:24:09 -04:00 |
|
Thomas Harte
|
79ef38b123
|
Attempted to use the new get_cycles_until_next_event method to take some repetition outside of the PLL and drive event loops.
|
2016-09-17 22:02:38 -04:00 |
|
Thomas Harte
|
dbb758aaf1
|
Workaround for a weird bug that suddenly appears to manifest: gzgetc is returning the file name, not bytes from the file. Seems to be related to improper initialisation of the next field within the gzFile header. I can't immediately see where ZLib intends to do that so it's a bit mysterious. But the larger-than-8 readers could probably save time by reading in blocks anyway.
|
2016-09-17 22:01:25 -04:00 |
|
Thomas Harte
|
14a9edcf5d
|
Made an attempt to do the time base conversion upfront, saving a lot of hassle and allowing greater prediction.
|
2016-09-17 19:52:27 -04:00 |
|
Thomas Harte
|
9d6dcb80a7
|
Started work on a GCR parser and the helper functions that lie behind that.
|
2016-09-13 21:53:36 -04:00 |
|
Thomas Harte
|
e3571e8b9e
|
Added insurance against an infinite loop should the tape be exhausted.
|
2016-09-12 22:22:23 -04:00 |
|
Thomas Harte
|
eeec516fa6
|
Implemented seeking on tapes, mucked about a bit more with the Commodore analyser, at least temporarily removed cropping from the Vic emulator.
|
2016-09-11 17:09:00 -04:00 |
|
Thomas Harte
|
1de6097f06
|
Shuffled C stuff out on top.
|
2016-09-08 21:08:03 -04:00 |
|
Thomas Harte
|
24251a2768
|
Negligible indentation fix.
|
2016-09-08 07:49:43 -04:00 |
|
Thomas Harte
|
01e5dae512
|
Threw in 300-baud support. Why not?
|
2016-09-08 07:48:20 -04:00 |
|
Thomas Harte
|
3e925e80a3
|
Added a field-filling constructor for pulses.
|
2016-09-08 07:41:44 -04:00 |
|
Thomas Harte
|
1e7b5330f5
|
More or less rewrote, to use a filled-per-chunk buffer of upcoming pulses rather than working them out as requests come. Which is more straightforward — all the code for a particular chunk goes in exactly one place — and much easier to extend. So threw in a provisional 0104 implementation.
|
2016-09-08 07:41:26 -04:00 |
|
Thomas Harte
|
d7d5f24aab
|
Attempted, at least, to insert a dummy byte as per the specification.
|
2016-09-06 21:51:04 -04:00 |
|
Thomas Harte
|
11850b872d
|
Sought to emulate 0111 as a longer 0110 to test a particular HQ UEF. Some progress. Not great.
|
2016-09-05 18:28:43 -04:00 |
|
Thomas Harte
|
21e5f407d8
|
I need to get a bit more definitive on naming but this gets all the way to setting a configuration upon an Electron.
|
2016-08-31 22:03:42 -04:00 |
|
Thomas Harte
|
963a479908
|
Made a quick first attempt at getting a file name from Acorn tape, failing terribly but at least formalising tapes being able to signal their end.
|
2016-08-29 21:53:06 -04:00 |
|
Thomas Harte
|
d1abfc040c
|
Addressed my dithering here: the file format containers themselves should do nothing but inspect the data to find out whether it is of the correct format. The machine steps are there for machine-specific validation. So it's probably easier to treat a binary ROM image just as a binary ROM image. Therefore, the Acorn-specific .rom detection is now in an Acorn-specific area.
|
2016-08-29 08:48:49 -04:00 |
|
Thomas Harte
|
29c972f4b8
|
Added hacky segue into analysis for all Electron formats. Added analyser to try to differentiate Acorn-format ROMs from other things called .rom, which are likely to be numerous.
|
2016-08-28 12:43:17 -04:00 |
|
Thomas Harte
|
d9f0065154
|
Sketched out just enough classes to get through the get-contents-into-memory step of static analysis.
|
2016-08-28 12:20:40 -04:00 |
|