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807 Commits

Author SHA1 Message Date
Thomas Harte
9d07765823 Ensures proper precedence of * over %. 2019-11-14 23:19:31 -05:00
Thomas Harte
2c4f372872 Adds support for the .ST file format. 2019-11-12 23:23:14 -05:00
Thomas Harte
74be876d72 Corrects track count calculation for DSD disks. 2019-11-12 23:22:56 -05:00
Thomas Harte
e8e166eec5 Ensures no out-of-disk-bounds mirroring. 2019-11-12 23:22:25 -05:00
Thomas Harte
0204003680 Resolves GCC warnings. 2019-11-09 16:12:37 -05:00
Thomas Harte
0971bbeebe Merge branch 'master' into AtariST 2019-11-05 23:24:26 -05:00
Thomas Harte
f3e2e88986 Update explanation of NIB processing. 2019-11-05 23:20:20 -05:00
Thomas Harte
46ec3510be Fixed: ST sectors are numbered from 1, not 0. 2019-11-03 21:18:29 -05:00
Thomas Harte
1c154131f9 Expands size of storage in Cycles/HalfCycles; adjusts widely to compensate. 2019-10-29 22:36:29 -04:00
Thomas Harte
909685d87d A drive with no disk is now happy to spin its motor. 
It'll continue to produce index-hole events, which might not be accurate for 5.25" drives. Research to do.
 2019-10-26 22:57:05 -04:00
Thomas Harte
c66c484c54 Removes unused includes. 2019-10-20 20:38:54 -04:00
Thomas Harte
345b32d6e3 Implements read-only MSA support. 2019-10-20 20:38:54 -04:00
Thomas Harte
8b397626bf Adds a route through the static analyser to the Atari ST. 2019-10-20 20:38:54 -04:00
Thomas Harte
9d17d48bca Ensures cycles_per_revolution_ is populated for fixed-rate drives. 2019-09-28 23:23:15 -04:00
Thomas Harte
776b819a5a Adds the SCSI bus as an Activity::Source. 2019-09-19 19:31:22 -04:00
Thomas Harte
3d54d55dbb Adds missing #include for assert. 2019-09-18 22:06:13 -04:00
Thomas Harte
72c0a631f7 Moves includes to correct file. 2019-09-18 22:04:54 -04:00
Thomas Harte
1608a90d5d Takes another stab at finding ssize_t. 2019-09-18 22:03:51 -04:00
Thomas Harte
4f8a45a6ce Adds #include for ssize_t. 2019-09-18 22:02:59 -04:00
Thomas Harte
4f0f1dcf18 Corrects accidental use of #import. 2019-09-18 21:53:22 -04:00
Thomas Harte
8d4a96683a Reduces output noise. 2019-09-18 21:41:29 -04:00
Thomas Harte
128a1da626 Enables write support. 2019-09-18 20:18:02 -04:00
Thomas Harte
962275c22a Removes clock for NCR 5380. 
It doesn't have one in real life, and now can live off the time counting that occurs on the SCSI bus.
 2019-09-18 20:17:47 -04:00
Thomas Harte
3002ac8a4a Adds mapping of READ(8) size 0 to size 256. 2019-09-17 21:59:32 -04:00
Thomas Harte
ff43674638 Corrects partition map: string fields are 32 bytes long. 2019-09-17 21:46:14 -04:00
Thomas Harte
2f6c366668 Makes a concerted effort at properly wrapping a hard disk image. 2019-09-17 21:30:04 -04:00
Thomas Harte
2ce1f0a3b1 Implements multi-sector read/write. 
This once again unblocks Apple HD SC Setup. Progress!
 2019-09-16 22:20:42 -04:00
Thomas Harte
210129c3a1 Updated as per Inside Macintosh IV. 
Of which I now own a copy.
 2019-09-16 21:31:43 -04:00
Thomas Harte
934901447a Adds a temporary version of block access writing. 
Whatever I'm doing, it's still not correct. The Macintosh ostensibly appears to 0-fill the direct-access device, then reads a sector back and hangs.
 2019-09-15 22:06:45 -04:00
Thomas Harte
c849188016 Adds format and write to the SCSI target. 
Now I think I need to switch back to the 5380 to ensure proper DMA mode interactions when writing.
 2019-09-12 21:58:09 -04:00
Thomas Harte
87e8dade2f Implements READ BUFFER to do, you know, *something*. Plus READ CAPACITY. 
The HD SC utility now offers up drive 6 for formatting. That's progress.
 2019-09-11 21:52:02 -04:00
Thomas Harte
6fc5b4e825 Simplifies INQUIRY for future targets; implements enough of SENSE MODE to advance. 
The HD SC setup utility is now looking to read buffer.
 2019-09-08 21:59:56 -04:00
Thomas Harte
00ce7f8ae0 Takes a first shot at INQUIRY. 2019-09-07 22:04:44 -04:00
Thomas Harte
6e0e9afe2f Fixed: to post a message, I want message in, not message out. 2019-09-07 13:35:38 -04:00
Thomas Harte
cb0d994827 Provides empty data for the unimplemented sectors. 2019-09-07 13:17:53 -04:00
Thomas Harte
bee782234a Ensures no state transitions while acknowledge is still asserted. 2019-09-07 13:17:34 -04:00
Thomas Harte
cbd1a8cf78 Factors out command termination, adds a default implementation of test unit ready. 2019-09-03 22:40:18 -04:00
Thomas Harte
a4ab0afce3 Takes a shot at completing a full SCSI interaction. 2019-09-03 21:15:30 -04:00
Thomas Harte
1c7e0f3c9d Fixes control line modification by the 5380 and SCSI target command chaining. 
So now I'm back to trying to guess how a SCSI command terminates re: the relative meanings of a message phase and a status phase.
 2019-09-02 23:14:37 -04:00
Thomas Harte
318cdb41ea Adds SCSI bus clocking to the Macintosh, and fixes its internal counting. 2019-09-02 16:03:33 -04:00
Thomas Harte
2f8e31bc8b Takes a first bash at implementing the new SCSI::Bus timing infrastructure. 2019-09-02 13:00:01 -04:00
Thomas Harte
310c722cc0 Starts a transition to bus-level knowledge of SCSI-specific bus timing thresholds. 
The idea being that bus attachees need not all count time for themselves. They can be very plain finite state machines.

New semantics are not yet implemented within the Bus. The plan is to do that, remove the internal counting of time within the NCR, then adjust the Target to be more explicitly stateful.
 2019-08-31 21:44:22 -04:00
Thomas Harte
25956bd90f Mildly improves temporary logging. 
A deckchair shuffle, at best.
 2019-08-26 22:35:11 -04:00
Thomas Harte
1a60ced61b Starts trying to deal with creating a whole volume from merely a partition. 2019-08-25 23:03:54 -04:00
Thomas Harte
081316c071 Adds some additional commentary as this takes shape. 2019-08-25 17:46:05 -04:00
Thomas Harte
eafbc12cc1 Ensures a clean entry into the command phase. 2019-08-25 17:43:14 -04:00
Thomas Harte
ca08716c52 Introduces real hard disk images to the nascent world of SCSI. 2019-08-25 17:03:41 -04:00
Thomas Harte
30cef1ee22 Adds write support. 2019-08-25 15:16:35 -04:00
Thomas Harte
404b088199 Adds a trivial mass-storage device, for Macintosh HFV volumes. 2019-08-25 15:09:27 -04:00
Thomas Harte
7d61df238a Localises #include. 2019-08-25 15:09:04 -04:00
Thomas Harte
c86db12f1c Starts implementing DMA support on the 5380. 
The Macintosh doesn't actually use the DMA signals, but uses pseudo-DMA mode so they nevertheless need to be appropriate.
 2019-08-24 22:47:11 -04:00
Thomas Harte
ce2e85af8b Adds missing bus state callouts. 2019-08-22 23:27:00 -04:00
Thomas Harte
2d82855f26 Attempts to provide a data out phase. 2019-08-22 23:16:58 -04:00
Thomas Harte
faec516a2c Starts pushing towards figuring out a proper infrastructure for mass storage. 2019-08-21 23:22:58 -04:00
Thomas Harte
f668e4a54c Makes an attempt at getting the 5380 past arbitration. 
Not entirely successful. Also gets a bit smarter with `final` on ClockingHint::Sources.
 2019-08-15 23:14:40 -04:00
Thomas Harte
b1f04ed96d Eliminates the crutch of PlusToo BIN files. 
Thereby returning the .bin extension to the various consoles.
 2019-07-28 16:07:16 -04:00
Thomas Harte
786b26d23e Adds an admission of incompleteness. 
I really need to figure out the 5-and-3 encoding.
 2019-07-26 23:23:40 -04:00
Thomas Harte
d08d8ed22c Adds a further drift safeguard. 2019-07-26 23:23:01 -04:00
Thomas Harte
39d7e3c62c Ensures relative_exponents less than or equal to -32 don't overflow. 2019-07-26 22:19:40 -04:00
Thomas Harte
572e8b52e1 At the cost of extra storage, attempts to simplify away potential rounding issues around the index hole. 2019-07-26 17:20:32 -04:00
Thomas Harte
9b634472c6 Gets a little more rigorous on "high resolution". 2019-07-26 15:26:51 -04:00
Thomas Harte
d2bfd59953 Ensures positional continuity across rotation speed changes. 2019-07-25 22:29:54 -04:00
Thomas Harte
3d20ae47ea Ensures cycles_since_index_hole_ is wrapped to track length. 2019-07-25 21:48:01 -04:00
Thomas Harte
77333ff9f7 It appears that file checksums are not reliable. 2019-07-17 14:56:50 -04:00
Thomas Harte
79a624e696 Applies more rigorous logic to deciding when to stop parsing. 2019-07-16 18:06:54 -04:00
Thomas Harte
c123ca1054 Slightly improves syntax. 2019-07-16 18:05:58 -04:00
Thomas Harte
9f0f35033d Introduces sector interleaving. 2019-07-16 18:05:40 -04:00
Thomas Harte
3633285aaa Ensures a trailing zero bit isn't dropped. 2019-07-16 16:36:00 -04:00
Thomas Harte
cb16790330 Improves qualifiers. 2019-07-15 22:40:45 -04:00
Thomas Harte
ca37fd8f4c Corrects tag preservation. 2019-07-15 17:15:06 -04:00
Thomas Harte
46b98dab70 Bumps up the amount of reserved storage. 
To avoid a reallocation when reading Mac data.
 2019-07-15 17:12:31 -04:00
Thomas Harte
0568996264 Fixes a couple of data arrangement issues on output. 2019-07-15 17:11:58 -04:00
Thomas Harte
5b05a9bc61 Extends Drive to report is_writing and so that writing works as the first action. 2019-07-12 18:53:41 -04:00
Thomas Harte
2c39229b13 Adds has-new-disk flag, allowing mounting of software from the desktop. 2019-07-12 13:17:24 -04:00
Thomas Harte
6c2cc206a6 Takes a first stab at write support for Macintosh disk images. 
Albeit that the Macintosh itself can't yet write.
 2019-07-11 18:09:37 -04:00
Thomas Harte
5a9f3cfc1e Completes Mac GCR decoding and its associated test. 2019-07-11 17:37:07 -04:00
Thomas Harte
8f28b33342 Starts work on Macintosh GCR decoding. 2019-07-11 16:28:52 -04:00
Thomas Harte
c4ab0bb867 Starts sketching out an interface for IWM drives, eliminating a dangling use of unsigned as it goes. 2019-07-10 16:05:59 -04:00
Thomas Harte
3f303511bd Adds cstring include, in support of memcpy. 2019-07-08 18:06:58 -04:00
Thomas Harte
b9c2c42bc0 Switches drives to using floats for time counting. 
Hopefully to eliminate a lot of unnecessary `Time` work; inaccuracies should still be within tolerable range.
 2019-07-02 15:43:03 -04:00
Thomas Harte
68a3e5a739 Renamed DiskCopy42 to MacintoshIMG, now that it's not just DiskCopy 4.2 files. 2019-06-18 14:32:58 -04:00
Thomas Harte
9730800b6a Adds support for raw sector dumps. 2019-06-18 14:14:25 -04:00
Thomas Harte
506276a2bd Corrected: use format tag as intended. 2019-06-18 14:04:28 -04:00
Thomas Harte
df56e6fe53 Fixed: the sector number also goes into sector bodies. 
Also the checksum is written in the other order, and the final byte of data isn't output.
 2019-06-18 10:34:10 -04:00
Thomas Harte
756641e837 Fixed: tags go first, then data. 2019-06-16 22:00:12 -04:00
Thomas Harte
05c2854dbc Makes at least some attempt at producing real disk tracks. 2019-06-16 21:17:24 -04:00
Thomas Harte
5c8aacdc17 Fixes the more obvious issues with GCR encoding: byte order, top bit selection. 2019-06-16 17:17:24 -04:00
Thomas Harte
fe0dc4df88 Starts building out some tests for Apple GCR encoding. 2019-06-15 22:48:24 -04:00
Thomas Harte
33f2664fe9 Makes a first attempt at Macintosh GCR encoding. 2019-06-15 22:29:02 -04:00
Thomas Harte
a17e47fa43 Apple's GCR header varies between the Mac and the Apple II. 2019-06-15 16:32:56 -04:00
Thomas Harte
877b46d2c1 Advances IWM/drive emulation very close to the point of 'Welcome to Macintosh'. 2019-06-15 16:08:54 -04:00
Thomas Harte
e9d0676e75 Fiddles further with the tachometer. 2019-06-06 21:36:19 -04:00
Thomas Harte
7591906777 Numerous IWM fixes: the machine now seems to be trying to measure the tachometer. 2019-06-06 18:32:11 -04:00
Thomas Harte
08671ed69c Fixes setting of a Time to a float. 2019-06-05 14:43:34 -04:00
Thomas Harte
511d292e73 Ensures gain noise is forgotten upon assumption of a new track. 2019-06-05 14:43:17 -04:00
Thomas Harte
833258f3d7 Sets things up to allow variable rotation rates, and especially Sony 800kb-style self-selecting rates. 2019-06-04 21:41:54 -04:00
Thomas Harte
b8a1553368 Adds putative support for PlusToo-style BIN files. 
Albeit a bit of a guess, since it's not intended to be an emulator file format.
 2019-06-04 21:41:09 -04:00
Thomas Harte
1033abd9fe Starts making some space for Macintosh-style GCR encoding. 2019-06-04 15:41:15 -04:00
Thomas Harte
881feb1bd3 Adds preliminary parsing of the Disk Copy 4.2 format. 2019-06-02 13:39:25 -04:00
Thomas Harte
d97348dd38 Eliminates dangling uses of printf. 2019-03-02 18:07:05 -05:00