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3479 Commits

Author SHA1 Message Date
Thomas Harte
0bb74f405f Ensure lines are in-phase with the NTSC colour subcarrier. 2023-12-06 13:12:58 -05:00
Thomas Harte
1aa168054e Add a phoney colour burst. 2023-12-06 13:10:28 -05:00
Thomas Harte
6d7c6de32f Fix flush_pixels for 640px mode. 2023-12-06 11:50:16 -05:00
Thomas Harte
d3021e8c90 Attempt _something_ for 640px mode. 2023-12-06 11:42:35 -05:00
Thomas Harte
6adaf89934 Make first attempt at palette support. 2023-12-06 11:19:04 -05:00
Thomas Harte
bf49f745bf Attempt to distinguish clocks. 2023-12-06 10:41:20 -05:00
Thomas Harte
c5aa3fc75c Start mangling towards pixel output. 2023-12-06 10:30:30 -05:00
Thomas Harte
f455f07ba2 Support half-clocked mode. 2023-12-06 09:59:14 -05:00
Thomas Harte
561e50a24d Implement most of CGA text mode. 2023-12-06 09:42:22 -05:00
Thomas Harte
23bdf0c2a2 Add CGA font references. 2023-12-06 09:34:04 -05:00
Thomas Harte
24eaf95e9d Limit to eight pixels per fetch, to produce stable video. 2023-12-06 09:13:47 -05:00
Thomas Harte
e43f960934 Produce incorrect output from proper clock; capture mode. 2023-12-05 23:01:08 -05:00
Thomas Harte
fdd599e71a Unify CRTC routing. 2023-12-05 23:00:43 -05:00
Thomas Harte
84ee683ad3 Remove redundant, false comment. 2023-12-05 23:00:21 -05:00
Thomas Harte
b2b05b590f Clone the MDA class to CGA. 2023-12-05 22:37:33 -05:00
Thomas Harte
c5ec9ae171 Adjust MDA clock; it's slightly slower than my guess. 2023-12-05 22:31:37 -05:00
Thomas Harte
5576588c2d Fix drive enables, go back to FF for non-existent ports. 2023-12-05 22:02:41 -05:00
Thomas Harte
fd8afb6668 Devolve memory location and font ROM decision. 2023-12-05 16:46:39 -05:00
Thomas Harte
bdf9c4765b Loosen the assumption of MDA. 2023-12-05 16:38:09 -05:00
Thomas Harte
6659a1dec5 Exit on EOP. 2023-12-05 15:37:25 -05:00
Thomas Harte
23c60ae9bc Supply video adaptor type. 2023-12-05 15:19:58 -05:00
Thomas Harte
4265455c31 Unify DMA interface. 2023-12-05 14:52:14 -05:00
Thomas Harte
0bcb17985b Eliminate further warnings. 2023-12-05 14:44:20 -05:00
Thomas Harte
9601c69e12 Implement blinking text. 2023-12-04 22:02:38 -05:00
Thomas Harte
9f65587a1d Correct scan status scaling; rearrange FDC marginally. 2023-12-04 21:46:03 -05:00
Thomas Harte
b0d1dedb65 Support MDA control: display enable. 2023-12-04 16:34:46 -05:00
Thomas Harte
bf8a4b7efe Ensure sector cache is cleared upon disk change. 2023-12-04 12:28:29 -05:00
Thomas Harte
edef0732ac Avoid potential infinite read loops. 2023-12-04 12:19:21 -05:00
Thomas Harte
0d7646d42a Add a cursor-type template parameter. 2023-12-04 09:45:32 -05:00
Thomas Harte
37c46d579d Add missing array imports. 2023-12-03 18:06:09 -05:00
Thomas Harte
4957ae7de1 Support cursor at point of output. 2023-12-02 22:44:26 -05:00
Thomas Harte
e77f4457c2 Map various missing keys. 2023-12-02 22:40:05 -05:00
Thomas Harte
c6b989d85b Add an input queue, to avoid key drops. 2023-12-02 22:29:49 -05:00
Thomas Harte
92913b7455 Fix mapping of Z. 2023-12-02 18:46:22 -05:00
Thomas Harte
208846a166 Attempt proper EOP semantics; multisector reads. 2023-12-02 18:38:26 -05:00
Thomas Harte
c31ee968df TC: start tending towards meaning. 2023-12-02 15:24:47 -05:00
Thomas Harte
ad9e0b664a
Merge pull request #1231 from TomHarte/DiskClassification 
Improve format support; log more.
 2023-12-02 15:11:24 -05:00
Thomas Harte
1b7e109047 Remove nonsense comment. 2023-12-02 13:25:08 -05:00
Thomas Harte
6c10611150 Avoid potential out-of-bounds read. 2023-12-02 13:23:48 -05:00
Thomas Harte
aa15fd1fff Comment more. 2023-12-02 00:00:44 -05:00
Thomas Harte
691d1cce9e Simplify and fix track caching. 2023-12-01 23:35:11 -05:00
Thomas Harte
7072a1661c Flag floppy as present. 2023-12-01 22:44:21 -05:00
Thomas Harte
bc89cb7d06 Hack attack: ignore TC. 2023-12-01 17:30:32 -05:00
Thomas Harte
33a0c40c02 Support HLT. 2023-12-01 13:15:01 -05:00
Thomas Harte
365b62b4a7 Add TODO. 2023-12-01 09:50:11 -05:00
Thomas Harte
4d1e976b55 Flag drive as interrupting. 2023-12-01 09:49:50 -05:00
Thomas Harte
4429448815 Make some effort at terminating appropriate if no sector. 2023-12-01 09:47:52 -05:00
Thomas Harte
88e67d9ad6 Return some status after reading. Seemingly wrong. 2023-12-01 09:37:30 -05:00
Thomas Harte
d101483714 Hack in enough that disk contents end up in RAM. 2023-12-01 09:34:31 -05:00
Thomas Harte
5feac8ef14 Avoid duplicate symbol. 2023-12-01 07:36:12 -05:00
Thomas Harte
a96cb1ebd6 Decommit debugging hook. 2023-12-01 06:46:00 -05:00
Thomas Harte
2da2240d34 Remove errant break. 2023-12-01 06:45:29 -05:00
Thomas Harte
ef37b09a78 Seed all transfers as complete. 2023-11-30 22:47:38 -05:00
Thomas Harte
9fc0d411fd Further flesh out DMA, breaking POST. 2023-11-30 22:45:40 -05:00
Thomas Harte
0dc44e8efd Adjust audio formulation. 
Probably still not right, but less wrong with the current input.
 2023-11-30 14:37:13 -05:00
Thomas Harte
c076636df1 Fix typo. 2023-11-30 14:26:26 -05:00
Thomas Harte
c397da3e5a Add TODOs. 2023-11-30 12:52:08 -05:00
Thomas Harte
5f6bbec741 Capture DMA high bytes, add actor for accesses. 2023-11-30 12:47:50 -05:00
Thomas Harte
7f0bb716f7 Grab sector contents, ready for more FDC work. 2023-11-29 15:55:37 -05:00
Thomas Harte
b7d3633b38 Log slightly more. 2023-11-29 15:30:47 -05:00
Thomas Harte
05504c8389 Accept and keep hold of disk images. 2023-11-29 15:20:14 -05:00
Thomas Harte
8d01829fa7 Adopt PC-style naming, limit to one drive. 2023-11-29 11:35:21 -05:00
Thomas Harte
be842ee2f1 Add drive indicator lights. 2023-11-29 11:31:37 -05:00
Thomas Harte
e034daa6c8 Capture motor state. 2023-11-29 09:52:16 -05:00
Thomas Harte
ce4bcf9064 Improve comment. 2023-11-29 09:50:08 -05:00
Thomas Harte
a992ae37b1 Mildly rearrange, to match enum order. 2023-11-29 09:49:15 -05:00
Thomas Harte
fbbe3ab7f1 Include seek ended flag. 2023-11-29 09:45:45 -05:00
Thomas Harte
6e2e67fd46 Sculpt out enough to get to a read data command. 2023-11-29 09:42:43 -05:00
Thomas Harte
3827a084ad Code to GlaBIOS expectations. 2023-11-28 23:18:22 -05:00
Thomas Harte
301442a0b1 Fix meaning of flag, use correctly. 2023-11-28 22:34:34 -05:00
Thomas Harte
dd4bcf68bf Load up on debugging logs. 2023-11-28 15:09:57 -05:00
Thomas Harte
b860fba0a3 Make an attempt at providing varied sense interrupt statuses. 2023-11-28 14:12:39 -05:00
Thomas Harte
c19c356c10 Add disabled longer serialisation. 2023-11-27 23:23:00 -05:00
Thomas Harte
8fec9bef11 Attempt IRQ logic. 2023-11-27 23:16:24 -05:00
Thomas Harte
bffe3ffa25 Add an 8272 results phase. 2023-11-27 23:05:37 -05:00
Thomas Harte
993366ac5a Merge branch 'master' into PCFDC 2023-11-27 22:16:30 -05:00
Thomas Harte
87eec47b79 Mildly reduce cost of 8-byte ROM overlay. 2023-11-27 15:48:30 -05:00
Thomas Harte
032eeb4757 Eliminate runtime switch. 2023-11-27 14:57:41 -05:00
Thomas Harte
5c7f94d2ef Introduce the possibility of operation type as a template parameter. 
It's already proven possible to provide this for instruction fetch, so I think it'll immediately be a win. But more importantly it opens a path forwards for further improvement.
 2023-11-27 11:48:34 -05:00
Thomas Harte
291723e85e Insert notes to self, trying to tie down FloppyController interface. 2023-11-27 10:27:36 -05:00
Thomas Harte
a6a464c240 Add printed TODO. 2023-11-25 21:40:13 -05:00
Thomas Harte
9bd75464b5 Proceed to receiving a sense interrupt status. 2023-11-25 18:15:37 -05:00
Thomas Harte
0bb048e24b Start formalising/extracting 8272 status. 2023-11-25 18:10:49 -05:00
Thomas Harte
8c70317d31 Introduce interrupt. 2023-11-24 23:06:52 -05:00
Thomas Harte
dd135bf3fe Start experimenting with a possible end-of-reset interrupt? 2023-11-24 22:41:33 -05:00
Thomas Harte
2efb5236f7 Add an agent for floppy control. 2023-11-24 22:19:39 -05:00
Thomas Harte
d5c30e3175 Add enough keyboard support to be able to bypass the initial FDC BIOS failure report. 2023-11-24 13:38:06 -05:00
Thomas Harte
89423f28ef Limit extraneous printing. 2023-11-23 22:47:31 -05:00
Thomas Harte
019d987623 Clear buffer on read. 2023-11-23 22:16:08 -05:00
Thomas Harte
7e8020df59 Avoid a spurious initial interrupt. 2023-11-23 22:15:20 -05:00
Thomas Harte
44d602e0f6 Seriously attempt a keyboard controller. 2023-11-23 22:10:51 -05:00
Thomas Harte
0674da0325 Flip IRQ priority. 2023-11-23 15:41:24 -05:00
Thomas Harte
113fc9f757 Add further TODO. 2023-11-23 15:29:43 -05:00
Thomas Harte
2c31452629 Add TODO, as exposition. 2023-11-23 15:19:31 -05:00
Thomas Harte
505df78108 Add column duplication, switch to green. 2023-11-23 15:18:28 -05:00
Thomas Harte
d92d0e87ac Honour MDA attributes. 2023-11-23 14:51:32 -05:00
Thomas Harte
df9e9c2c4d Start accumulating notes. 2023-11-22 15:21:45 -05:00
Thomas Harte
e0f72f2048 Tidy up. 2023-11-22 14:18:58 -05:00
Thomas Harte
a293a3a816 Document the future. 2023-11-22 14:14:53 -05:00
Thomas Harte
b22b489380 Mask into 4kb; I don't know whether hardware scrolling is in use. 2023-11-22 14:12:57 -05:00
Thomas Harte
231de8440e Add text display. 2023-11-22 14:11:22 -05:00
Thomas Harte
381537fde9 Get as far as MDA being able to fetch. 2023-11-22 13:52:28 -05:00
Thomas Harte
f249e4ada6 Maintain an actual pixel buffer. 2023-11-22 13:40:50 -05:00
Thomas Harte
12179e486f Create a solid white rectangle. 2023-11-22 13:18:39 -05:00
Thomas Harte
80b2ccd418 Attempt to wire in a CRTC. 2023-11-22 12:53:09 -05:00
Thomas Harte
1828a10885 Use less branchy inner loop. 2023-11-21 22:42:53 -05:00
Thomas Harte
bcd4a2216a Improve clocking. 2023-11-21 22:36:11 -05:00
Thomas Harte
3da3401125 Attempt full audio output. 2023-11-21 22:28:33 -05:00
Thomas Harte
972d1d1ddd Add audio pipeline. 2023-11-21 22:11:32 -05:00
Thomas Harte
6329a1208a Adopt PIT-centric timing. 2023-11-21 22:02:24 -05:00
Thomas Harte
375a9f9ff5 Pull out the PIC, DMA. 2023-11-21 15:50:38 -05:00
Thomas Harte
a1e118a1ff Do some interrupt work. 2023-11-21 15:46:31 -05:00
Thomas Harte
83ca9b3af5 Hack in some MDA text logging. Boot seems to complete? 2023-11-21 11:37:36 -05:00
Thomas Harte
acdf32e820 Handle low/high switches. 2023-11-21 11:25:53 -05:00
Thomas Harte
931e6e7a56 Add, disable, logging detritus. 2023-11-21 11:19:47 -05:00
Thomas Harte
058080f6de Prove to my caveman self that no text is being written. 2023-11-20 23:11:27 -05:00
Thomas Harte
c4e9f75709 Edge towards but don't quite reach interrupt. 2023-11-20 22:52:20 -05:00
Thomas Harte
695282b838 PIT output now reaches the PIC. 2023-11-20 22:36:05 -05:00
Thomas Harte
f0e2ef5e28 Attempt to implement square-wave mode. 2023-11-20 22:19:18 -05:00
Thomas Harte
ee6012f6e9 Evict the PIT. 2023-11-20 19:00:16 -05:00
Thomas Harte
d3e90ce006 Capture some basics. 
BIOS now seems to get as far as expecting channel 0 to trigger an interrupt, which never comes.
 2023-11-20 15:36:52 -05:00
Thomas Harte
18ddc2c83a Route traffic. 2023-11-20 15:11:22 -05:00
Thomas Harte
abf0eead7a Add a functionless PIC. 2023-11-20 13:53:44 -05:00
Thomas Harte
a689f2b63e Relocate comment. 2023-11-20 12:22:30 -05:00
Thomas Harte
a3066fc040 Advance to the missing PIC. 2023-11-20 12:21:37 -05:00
Thomas Harte
7eed254de9 Bring an 8255 into the mix. 2023-11-20 12:13:42 -05:00
Thomas Harte
55f466f2fa Add enough of the DMA subsystem to trip over in PPI world. 2023-11-19 22:55:29 -05:00
Thomas Harte
119c83eb18 Fix field decoding. 2023-11-19 21:51:27 -05:00
Thomas Harte
4e077701c9 Exit without further modification upon latch. 2023-11-19 16:37:47 -05:00
Thomas Harte
a8f1c72f5c Take a caveman run at debugging. 2023-11-19 16:05:44 -05:00
Thomas Harte
05e93f0eb3 Implementing counting for a couple of PIT modes. 2023-11-19 15:52:32 -05:00
Thomas Harte
af885ccf08 Decode PIT mode writes. 2023-11-19 15:01:21 -05:00
Thomas Harte
2b69081fff Start sketching the PIT. 2023-11-19 07:15:30 -05:00
Thomas Harte
a91449555f Add link for future self. 2023-11-17 17:38:17 -05:00
Thomas Harte
afc0ca3f1b Add XT roadmap. 2023-11-17 17:35:11 -05:00
Thomas Harte
f0ac62566c Add an 80286 BIOS, for later. 2023-11-17 17:15:57 -05:00
Thomas Harte
d202cfc2ca Add TODO. 2023-11-17 17:09:20 -05:00
Thomas Harte
ec2d878e3f End run around the template. 
I have yet to get any insight whatsoever on the reason for GCC's failure here and won't have access to a suitable test
machine for a while so all I have for testing is the arduous CI cycle.
 2023-11-17 17:02:46 -05:00
Thomas Harte
8af173c4bc Remove hopeful hit. 2023-11-16 15:48:27 -05:00
Thomas Harte
e1541543c3 Play hit and hope. 2023-11-16 15:40:47 -05:00
Thomas Harte
99e7de5a8b Colocate memory. 2023-11-16 15:24:35 -05:00
Thomas Harte
095359017f Log first unhandled port. 2023-11-16 13:02:35 -05:00
Thomas Harte
25f0a373f3 Don't sign-extend ports (!). 2023-11-16 11:17:12 -05:00
Thomas Harte
832e31f7e5 Add note to self. 2023-11-16 10:34:24 -05:00
Thomas Harte
164a7fe848 Log port IO. 2023-11-16 06:48:24 -05:00
Thomas Harte
62b6219763 Install BIOS, albeit in writeable storage. 2023-11-15 22:02:53 -05:00
Thomas Harte
2bc9dfbef9 Albeit with no BIOS present, execute. 2023-11-15 16:10:37 -05:00
Thomas Harte
3b84299a05 Edge closer to PCCompatible doing _something_. 2023-11-15 15:58:49 -05:00
Thomas Harte
6f48ffba16 Add enough of a ScanProducer to run. 2023-11-15 14:30:30 -05:00
Thomas Harte
1a3b2b0620 Add necessary wiring for File -> New... 2023-11-15 14:27:04 -05:00
Thomas Harte
af7069ac21 Include and fetch a BIOS. 2023-11-15 11:32:23 -05:00
Thomas Harte
e927fd00d8 Do just enough to include x86 code in the main build. 2023-11-15 11:01:28 -05:00
Ryan Carsten Schmidt
234292f163 Fix Apple II/II+/IIe first eight non-hbl vbl bytes 
Closes #1196
 2023-11-13 00:51:34 -06:00
Ryan Schmidt
18ed36d090 Update get_last_read_value source documentation 2023-10-25 03:25:52 -05:00
Ryan Schmidt
c206c7e2cb Fix Apple II/II+ text/lores hbl read addresses 
Closes #1181
 2023-10-25 03:25:48 -05:00
Ryan Schmidt
98730f1f90 Fix Apple II/II+/IIe first hbl byte read addresses 
Closes #1180
 2023-10-25 03:21:22 -05:00
Ryan Schmidt
c272632b5a Fix Apple II/II+/IIe hbl row < 64 read addresses 
See #1180
 2023-10-25 03:21:17 -05:00
Ryan Schmidt
577b01e80b Fix Apple II/II+/IIe vbl rows read addresses 
See #1180
 2023-10-25 03:21:06 -05:00
Thomas Harte
8efb6a9226 Simplify 'get_next_sequence_point' -> 'next_sequence_point'. 2023-09-10 18:00:49 -04:00
Thomas Harte
e5d3140cd1 Avoid flurry of startup events, repeats. 2023-08-22 09:28:57 -04:00
Thomas Harte
79e9de34b6 Flip order of byte usage in double high res mono. 2023-08-21 22:20:42 -04:00
Thomas Harte
2b58f64161 Switch to maximal signalling rate. 2023-08-21 22:12:55 -04:00
Thomas Harte
bb84a5a474 Enable various ADB-controller interrupts. 2023-08-21 15:35:13 -04:00
Thomas Harte
357a324e87 Add exposition. 2023-08-20 15:34:40 -04:00
Thomas Harte
b8e7c2b8ac Remove printf. 2023-08-20 15:33:30 -04:00
Thomas Harte
3e2a82b638 Add delta capper. 2023-08-20 15:32:48 -04:00
Thomas Harte
1125286b96 Add note to self. 2023-08-20 15:03:28 -04:00
Thomas Harte
17f1f05064 Hit and hope appears to have fixed mouse input. 2023-08-20 15:02:25 -04:00
Thomas Harte
b34403164e Abstract out VGC interrupt register; fix clearing bug. 2023-08-18 14:30:40 -04:00
Adrian Perez de Castro
1de2631877
Add missing <cstdint> includes for GCC 13 
Sprinkle includes of the <cstdint> header as needed to make the
build succeed with GCC 13, this fixes both with SDL and Qt builds.
 2023-05-25 23:06:13 +03:00
Thomas Harte
8578dfbf22 Eliminate various other errant spaces. 2023-05-16 16:40:09 -04:00
Thomas Harte
7f8f1d7e61 Avoid BASIC 2.1 requirement when running 1.1. 2023-05-15 10:17:27 -04:00
Thomas Harte
a1a7c0e253 Apply maybe_unused judiciously. 2023-05-15 10:17:04 -04:00
Thomas Harte
22ac13d3f2 Set proper number of volumes. 2023-05-13 22:29:09 -04:00
Thomas Harte
876fc6d1e0 Eliminate redundant line break. 2023-05-13 22:18:40 -04:00
Thomas Harte
e1d671daf7 Avoid paying for an OPLL if not connected. 2023-05-13 22:16:42 -04:00
Thomas Harte
4989701de9 Install MSX-MUSIC ROM. 2023-05-12 23:50:43 -04:00
Thomas Harte
fed97b8d26 Add MSX-MUSIC entry. 2023-05-12 23:33:28 -04:00
Thomas Harte
e7888497b7 Add an OPLL. 2023-05-12 23:30:03 -04:00
Thomas Harte
0b53c73da8 Add additional consts. 2023-05-12 22:13:55 -04:00
Thomas Harte
a6ebfe2ce2 Add has_msx_music flag. 2023-05-12 22:09:15 -04:00
Thomas Harte
50343dec43 Eliminate all whitespace-only lines. 2023-05-12 14:16:39 -04:00
Thomas Harte
28c79b2885 Eliminate redundant [space][tab] pairs. 2023-05-12 14:14:45 -04:00
Thomas Harte
f6acee18cc Eliminate type-in-function-name from 6502-world. 2023-05-10 18:53:38 -05:00
Thomas Harte
10cd2a36cf Avoid type-in-function-name, Z80 edition. 2023-05-10 18:42:19 -05:00
Thomas Harte
809cd7bca9 Remove the 68000's Mk2 suffix. 2023-05-10 17:13:01 -05:00
Thomas Harte
e56db3c4e5 Eliminate the old 68000 implementation. 2023-05-10 17:06:27 -05:00
Thomas Harte
2b56b7be0d Simplify namespace syntax. 2023-05-10 16:02:18 -05:00
Thomas Harte
0cb4fec504
Merge pull request #1129 from TomHarte/FarewellCodecvt 
Eliminate use of deprecated codecvt.
 2023-04-30 17:21:43 -04:00
Thomas Harte
ec81cdd388 Eliminate codecvt. 2023-04-30 17:17:40 -04:00
Thomas Harte
1f4d526ea5 Permit MSX RAM mapper readback. 2023-04-29 23:48:22 -04:00
Thomas Harte
201a7c17ae Avoid VDP race condition. 2023-03-12 23:20:48 -04:00
Thomas Harte
9836a108da Avoid VDP access races. 2023-03-10 21:04:55 -05:00
Thomas Harte
1edf747f9f Avoid flushes for video output changes. 2023-02-14 20:13:34 -05:00
Thomas Harte
4c93d01fe2 Reduce logging. 2023-01-29 21:30:57 -05:00
Thomas Harte
c9643c4145 Log memory control meaningfully. 2023-01-21 14:13:02 -05:00
Thomas Harte
339086d597 The Yamaha chips have more ports. 2023-01-17 22:29:17 -05:00
Thomas Harte
055e9cdf8d Differentiate unmapped and mapped-for-handler. 2023-01-16 19:52:40 -05:00
Thomas Harte
a5b9bdc18c Eliminate speculative apply_mapping. 2023-01-16 11:53:04 -05:00
Thomas Harte
eb51ff5cdf Add RAM paging. 2023-01-16 11:52:08 -05:00
Thomas Harte
1769c24531 Avoid ambiguous naming. 2023-01-16 11:43:43 -05:00
Thomas Harte
1a58ddaa67 Increase notes for future self. 2023-01-15 23:12:36 -05:00
Thomas Harte
183cb519e7 Give autonomy to secondary slots. 2023-01-15 22:51:17 -05:00
Thomas Harte
68361913ee Substitute VDP for the MSX 2. 2023-01-14 22:05:59 -05:00
Thomas Harte
1e17fc71ab Add an RP-5C01 to the MSX 2. 2023-01-14 14:52:07 -05:00
Thomas Harte
18def0c97d Correct extension ROM visibility. 2023-01-13 22:22:58 -05:00
Thomas Harte
f0a4d1d8ec Wire up did-page notifications. 2023-01-13 21:54:59 -05:00
Thomas Harte
50b5122969 For an MSX 2, the extension ROM is obligatory. 2023-01-13 14:18:39 -05:00
Thomas Harte
9f450b3ccb Expose the extension ROM to an MSX 2. 2023-01-13 14:16:12 -05:00
Thomas Harte
4190d25698 Ensure RAM is properly sized and available. 2023-01-13 14:07:54 -05:00
Thomas Harte
befc81743a Fix base RAM mapping. 2023-01-13 09:31:56 -05:00
Thomas Harte
23ff3fc366 Ensure all routes go somewhere. 2023-01-13 08:05:12 -05:00
Thomas Harte
78ce439b9b Add missing header; correct type. 2023-01-12 23:08:01 -05:00
Thomas Harte
ce440d52b3 Standardise name. 2023-01-12 23:02:24 -05:00
Thomas Harte
2e7e5ea12b Fleshes out most of a cleaner memory slot layout. 2023-01-12 23:01:11 -05:00
Thomas Harte
0d8c014099 Secondary slot selections are per primary slot. 2023-01-11 13:15:00 -05:00
Thomas Harte
fee82d3baa Fix typo. 2023-01-11 13:14:42 -05:00
Thomas Harte
76ad465030 Also seek the extension ROM for the MSX 2. 2023-01-11 12:56:09 -05:00
Thomas Harte
483ee8a74f Add a catch for the secondary paging register. 2023-01-10 22:24:40 -05:00
Thomas Harte
520ae7f2b2 Pick generic BIOS based on machine type. 2023-01-10 22:15:01 -05:00
Thomas Harte
ae5b81c0ab Add MSX 2 to the ROM catalogue. 2023-01-10 18:17:17 -05:00
Thomas Harte
6bd261b222 Add storage for secondary paging. 2023-01-10 18:07:31 -05:00
Thomas Harte
53bb17c848 Use model as a compile-time MSX configurator. 2023-01-10 14:55:57 -05:00
Thomas Harte
73549eb38c Document quite a bit more, to refresh my memory. 2023-01-10 14:40:03 -05:00
Thomas Harte
ef67205ce8 Set pixel count per mode. 2023-01-08 21:31:00 -05:00
Thomas Harte
794adf470b Break assumption that cycles = pixels; fix pixel clocking. 2023-01-08 21:25:22 -05:00
Thomas Harte
e8aab1fd2a Restore proper VDP selection. 2022-12-31 21:54:14 -05:00
Thomas Harte
ffb0b2ce0b Eliminate runtime duplication of personality. 2022-12-31 21:50:57 -05:00
Thomas Harte
7d6eac2895 Template the TMS on its personality. 
Template parameter currently unused, but preparatory to other improvements.
 2022-12-31 15:08:33 -05:00
Thomas Harte
ee22a98c17 Add note to future self. 2022-12-27 20:23:25 -05:00
Thomas Harte
28b4f51cb3 Add a SCSI activity indicator. 2022-11-16 11:31:10 -05:00
Thomas Harte
2f78a1c7af Add SCSI controller inclusion logic. 2022-09-15 12:17:50 -04:00
Thomas Harte
dc35ec8fa0 Merge branch 'master' into AppleIISCSI 2022-09-15 12:05:58 -04:00
Thomas Harte
36c3cb1f70 Deal with pre-ROM03 case, now that it's easy. 2022-09-13 16:31:06 -04:00
Thomas Harte
6773a321c1 Switch to portable direct bitwise logic. 2022-09-13 16:02:49 -04:00
Thomas Harte
ffdf44ad4f Switch to overt use of std::fill. 2022-09-13 15:39:17 -04:00
Thomas Harte
cbfd8e18e8 Eliminate repetitive magic constants. 2022-09-02 15:54:16 -04:00
Thomas Harte
8dc1aca67c Add TODO shout-outs. 2022-08-31 21:20:08 -04:00
Thomas Harte
df29a50738 Attempt to support the DMA interface. 2022-08-31 15:33:48 -04:00
Thomas Harte
7996fe6dab 'Clock' the SCSI bus (i.e. make it aware of passing time). 2022-08-30 16:40:25 -04:00
Thomas Harte
4df2a29a1f Add storage to the bus. 2022-08-24 15:23:50 -04:00
Thomas Harte
6010c971a1 Provide a volume to the SCSI card if one is received. 2022-08-23 15:11:56 -04:00
Thomas Harte
ea4bf5f31a Provide card's SCSI ID. 2022-08-23 15:05:36 -04:00
Thomas Harte
f4c242d5e9 Attempt to offer centralised C8 region decoding. 2022-08-23 14:50:44 -04:00
Thomas Harte
0595773355 Invents a new virtual select line for extended handling card ROM areas. 2022-08-23 14:41:45 -04:00
Thomas Harte
f89ca84902 Add missing include. 2022-08-22 21:44:33 -04:00
Thomas Harte
246bd5a6ac Merge branch 'master' into AppleIISCSI 2022-08-22 17:09:57 -04:00
Thomas Harte
3c2d01451a Remove dead comment. 2022-08-22 17:01:52 -04:00
Thomas Harte
c2c81162a1 Sketch out some of the easy stuff. 2022-08-22 16:48:51 -04:00
Thomas Harte
3d234147a6 Add in collected specs. 2022-08-22 10:22:19 -04:00
Thomas Harte
8e7f53751d Add Apple II SCSI ROM to the catalogue. 2022-08-21 22:03:52 -04:00
Thomas Harte
bfc77f1606 Add workaround that further isolates whatever bug Spindizzy reveals. 2022-08-19 16:38:42 -04:00
Thomas Harte
a6b8285d9c Factor out the blitter sequencer. 2022-08-19 16:38:15 -04:00
Thomas Harte
837acdcf60 Experimentally decline immediate blits. 2022-08-16 21:51:13 -04:00
Thomas Harte
7289192130 Fix refresh slots: they're taken, not open. 2022-08-16 21:51:02 -04:00
Thomas Harte
bb54ac14b8 Prove that new output errors are [probably] external to the Blitter. 2022-08-15 11:10:17 -04:00
Thomas Harte
856e3d97bf Merge branch 'master' into SerialisedBlitter 2022-08-15 10:54:36 -04:00
Thomas Harte
94231ca3e3 Put word-sizing responsibility on the caller. 2022-08-10 16:41:45 -04:00
Thomas Harte
e2a8b26b57 Display properly from greater RAM sizes. 2022-08-10 16:36:11 -04:00
Thomas Harte
6d1c954623 Make ST RAM size selectable, default to 1MB. 2022-08-10 12:00:06 -04:00
Thomas Harte
bdb35b6191 Add an easier hook for debugging. 2022-08-08 21:00:28 -04:00
Thomas Harte
892580c183 Clarify test. 2022-08-08 15:57:36 -04:00
Thomas Harte
d4b7d73fc4 Further reduces lines to one access per slot, max. 2022-08-07 19:19:00 -04:00
Thomas Harte
867769f6e7 Reduces line drawing to two accesses per slot. 
Still a fiction, but a better one.
 2022-08-07 19:15:03 -04:00
Thomas Harte
3781b5eb0e Provide further context. 2022-08-06 14:40:12 -04:00
Thomas Harte
318cea4ccd Attempt a full bus-transaction comparison. 2022-08-06 10:06:49 -04:00
Thomas Harte
45892f3584 Add optional transaction records to the Blitter. 2022-08-06 09:51:20 -04:00
Thomas Harte
612413cb1c Remove redundant state. 2022-08-04 10:06:14 -04:00
Thomas Harte
511ec5a736 Apply modulos at end of final line. 
Possibly I need to rethink the sequence logic?
 2022-07-30 21:35:26 -04:00
Thomas Harte
4fb9dec381 Fix use of bool. 2022-07-30 21:02:44 -04:00
Thomas Harte
82476bdabe Avoid 'complete' repetition. 2022-07-30 21:02:04 -04:00
Thomas Harte
58ee8e2460 Minor tidy-up. No fixes. 2022-07-30 21:00:50 -04:00
Thomas Harte
94a90b7a89 Attempt a real slot-by-slot blit. 2022-07-30 20:34:37 -04:00
Thomas Harte
5d992758f8 Ensure blitter with all flags disabled terminates. 2022-07-30 20:13:37 -04:00
Thomas Harte
27b8c29096 Apply modulos at end of line, not beginning. 2022-07-30 10:27:53 -04:00
Thomas Harte
93d2a612ee Add an explicit flush-pipeline step; some tests now pass. 2022-07-29 16:33:46 -04:00
Thomas Harte
03d4960a03 Begin a full-synchronous usage of the sequencer, at least exposing poor handling of the pipeline. 2022-07-29 16:15:18 -04:00
Thomas Harte
1ac0a4e924 Provide a loop count directly from the sequencer. 
This avoids the caller having to take a guess at iterations.
 2022-07-29 12:14:59 -04:00
Thomas Harte
d85d70a133 Add documentation, formal begin function. 2022-07-26 22:01:43 -04:00
Thomas Harte
2c95dea4db Introduce putative blitter sequencer. 2022-07-26 17:05:05 -04:00
Thomas Harte
804c12034c Apply blitter priority bit. 2022-07-26 16:07:26 -04:00
Thomas Harte
ce7f57f251 Switch to regular integer types for flags. 2022-07-26 09:22:05 -04:00
Thomas Harte
426eb0f79b Add comments, fix playfield sprite masking. 2022-07-22 17:01:38 -04:00
Thomas Harte
6beca141d5 Reinstate assumption of no sprites in vertical blank. 2022-07-21 08:41:50 -04:00
Thomas Harte
f29d305597 Add missing #include. 2022-07-19 21:40:16 -04:00
Thomas Harte
89abf7faeb Take a guess at reintroducing a special case for end-of-blank. 2022-07-19 21:25:34 -04:00
Thomas Harte
57186c3c14 Don't limit sprite fetch area; add further commentary. 2022-07-19 16:37:13 -04:00
Thomas Harte
feee6afe0f Improve documentation. 2022-07-19 16:19:19 -04:00
Thomas Harte
cb42ee3ade Eliminate DMAState; it sounds like VSTOP solves this problem. 2022-07-19 16:11:29 -04:00
Thomas Harte
830704b4a9 Clarify and slightly improve state machine. 
No more using the visible flag to permit a DMA control fetch.
 2022-07-19 15:39:57 -04:00
Thomas Harte
8f2e94a1d8 Switch name back to emphasise _async_. 2022-07-16 14:41:04 -04:00
Thomas Harte
76d5e53094 Fix red/blue confusion. 2022-07-15 16:24:07 -04:00
Thomas Harte
f465fe65f4
Merge pull request #1061 from TomHarte/MacintoshPixels 
Microtweak: simplify Macintosh pixel serialisation.
 2022-07-14 18:54:10 -04:00
Thomas Harte
bf03bda314 Generalise AsyncTaskQueue, DeferringAsyncTaskQueue and AsyncUpdater into a single template. 2022-07-14 16:39:26 -04:00
Thomas Harte
59da143e6a Add overt flushes to the SDL target. 2022-07-12 10:57:22 -04:00
Thomas Harte
4e9ae65459 Reintroduce sync matching. 2022-07-12 09:56:13 -04:00
Thomas Harte
6dabdaca45 Switch to int; attempt to do a better job of initial audio filling. 2022-07-09 13:33:46 -04:00
Thomas Harte
b097b1296b Adopt granular flushing widely. 2022-07-08 16:04:32 -04:00
Thomas Harte
b03d91d5dd Permit granular specification of what to flush. 2022-07-08 15:38:29 -04:00
Thomas Harte
96189bde4b Loop the Master System into the experiment. 2022-07-07 16:46:08 -04:00
Thomas Harte
fc0dc4e5e2 Amiga only, temporarily: attempt to reduce audio maintenance costs. 2022-07-07 16:41:49 -04:00
Thomas Harte
7cbee172b2
Merge pull request #1041 from TomHarte/InST 
Switch the Atari ST to the newer 68000.
 2022-06-30 17:15:04 -04:00
Thomas Harte
6a2d4ae11d Merge branch 'master' into InAmiga 2022-06-30 10:12:32 -04:00
Thomas Harte
6da634b79f Merge branch 'master' into InST 2022-06-30 10:12:23 -04:00
Thomas Harte
924de35cf3 Go all in on support for physical shadowing. 2022-06-29 14:39:56 -04:00
Thomas Harte
7cf9e08948 Map shadowing by logical address, not physical. 
Disclaimer: although this better matches the tests, I've yet to verify.
 2022-06-29 06:10:15 -04:00
Thomas Harte
60d3519993 Clarify, attempt to implement as internally documented. 2022-06-28 22:32:31 -04:00
Thomas Harte
6abc317986 Avoid permitting writes in the Cx00 region after uninhibiting the language card. 2022-06-28 16:35:47 -04:00
Thomas Harte
94fcc90886 Use auxiliary switches to control language card area when card is inhibited. 2022-06-28 12:46:31 -04:00
Thomas Harte
7aeaa4a485 Tweak paging semantics, to allow simple multiple dependencies. 2022-06-27 21:38:45 -04:00
Thomas Harte
ef40a81be2 Remove temporary hack. 2022-06-27 08:00:29 -04:00
Thomas Harte
21842052cf Alternative zero page should affect bank 0's language card area when the card is disabled. 2022-06-27 07:56:45 -04:00
Thomas Harte
56aa182fb6 Fix debug builds. 2022-06-06 15:26:15 -04:00
Thomas Harte
9818c7e78c Switch the Amiga to the newer 68000. 2022-06-06 11:10:56 -04:00
Thomas Harte
5495f30329 Microtweak: simplify Macintosh pixel serialisation. 2022-06-06 08:34:58 -04:00
Thomas Harte
6aa599a17c Future-proof perform_bus_operation. 2022-06-06 08:20:16 -04:00
Thomas Harte
57858b2fa5 Merge branch 'master' into InST 2022-06-05 20:59:48 -04:00
Thomas Harte
403eda7024 Add missing flush. 2022-06-05 09:08:36 -04:00
Thomas Harte
1671827d24 Add flush. 2022-06-05 09:07:43 -04:00
Thomas Harte
4a740fbd14 Switch Atari ST to using the new 68000. 2022-06-04 08:43:43 -04:00
Thomas Harte
a61f7e38b6 Very minor: avoid division and modulus when unnecessary. 2022-06-03 15:39:29 -04:00
Thomas Harte
3d059cb751 Make use of Microcycle helpers where relevant. 
None of these existed when the Macintosh was first added to this emulator.
 2022-06-03 15:33:31 -04:00
Thomas Harte
1365fca161 Avoid phoney write modifies. 2022-05-27 21:42:55 -04:00
Thomas Harte
a611a745e7 Switch the Macintosh to 68000 mk2. 2022-05-24 12:35:36 -04:00
Thomas Harte
b0518040b5 Plants the seek of a 68000 mark 2. 2022-05-16 11:44:16 -04:00
Thomas Harte
866b6c6129 Eliminate off_t. 2022-04-27 19:16:37 -04:00
Thomas Harte
efff91ea3d Undo bad guess at initial switch state. 2022-04-17 17:03:05 -04:00
Thomas Harte
290dd3993b CPC: ensure 64/128k RAM is properly selected. 2022-03-26 08:54:07 -04:00
Thomas Harte
bfd28a04ba Remove noise. 2022-03-18 10:41:20 -04:00
Thomas Harte
359ec257c0 Add a further state, seemingly to fix high-res mode. 2022-03-18 08:27:46 -04:00
Thomas Harte
88767e402c Switch DDFSTART/STOP state machine. 2022-03-17 20:03:36 -04:00
Thomas Harte
e698cbf092 Silence debugging information. 2022-03-13 12:48:05 -04:00
Thomas Harte
f2ce646d8d Undo 8-cycle-if-met WAIT. 2022-03-13 12:47:48 -04:00
Thomas Harte
acba357df6 Adds empty callouts for all serial port registers. 2021-12-23 15:22:20 -05:00
Thomas Harte
a17c192a9e Allow chip RAM size selection, while I'm here. 2021-12-22 15:30:19 -05:00
Thomas Harte
1916a9b99c Remove stdout noise. 2021-12-22 15:22:28 -05:00
Thomas Harte
9796b308dc Add basic implementation of fast RAM. 2021-12-22 15:17:11 -05:00
Thomas Harte
d0e3024bec Switch to nibble-oriented lookup tables for fill mode. 2021-12-19 17:16:46 -05:00
Thomas Harte
d2ad149e56 Fill mode always runs right to left. 2021-12-19 16:43:18 -05:00
Thomas Harte
348840a2aa It's probably a net detriment to use a template in this scenario. 2021-12-19 16:31:44 -05:00
Thomas Harte
3a719633eb Consolidate interface; correct LOGs. 2021-12-18 19:39:41 -05:00
Thomas Harte
bd69948d37 The Copper can now skip Chipset::perform. 2021-12-18 17:53:11 -05:00
Thomas Harte
54aa211f56 Avoid infinite loops for completely undefined addresses. 2021-12-18 17:48:45 -05:00
Thomas Harte
f118891970 Breaks Chipset::perform into read and write. 
This allows each to call the other when a read occurs of a write-only address, and vice versa.
 2021-12-18 17:43:53 -05:00
Thomas Harte
dbae3fc9a5 Propagate to bitplanes immediately; fix odd/even confusion. 2021-12-18 16:37:40 -05:00
Thomas Harte
c834960bfb Withdraw separate x-and-y guess, make MOVE lose a cycle if a sleep/wake occurs. 2021-12-12 19:18:18 -05:00
Thomas Harte
600abc55b5 Compare x and y separately, wake immediately from a sleep, log more. 2021-12-12 17:26:33 -05:00
Thomas Harte
f3ec7d54bb Clarifies wait-for-CPU-slot semantics. 
Big bonus: this guarantees `advance_dma`s will be called at most once per output cycle, even if they return `false`.
 2021-12-09 19:17:44 -05:00
Thomas Harte
2b0415d552 Attempt to avoid off-by-one buffer reads, add modulation. 2021-12-06 19:28:40 -05:00
Thomas Harte
066e4421e8 Attempt volcntrld. 2021-12-06 06:35:08 -05:00
Thomas Harte
f02a241249 Inserts an additional reload. 2021-12-05 17:47:12 -05:00
Thomas Harte
a5fe1e4259 Largely debugs audio state machine. 
I think I'm still missing an address reload somewhere though, and attachment doesn't actually push.
 2021-12-05 15:27:35 -05:00
Thomas Harte
9b80563443 Exposes targets for modulation. 2021-12-05 06:38:55 -05:00
Thomas Harte
91b5da06e3 Perform reload on Disabled -> WaitingForDummyDMA. 2021-12-04 19:17:40 -05:00
Thomas Harte
7320f96ae7 Capture attachment flags. 2021-12-04 18:02:43 -05:00
Thomas Harte
fdf2b9cd7b Add local data pointers. 2021-12-04 17:58:41 -05:00
Thomas Harte
bfc70a1b60 Ensure interrupt request bits always propagate. 2021-12-04 16:50:42 -05:00
Thomas Harte
aff7a93106 Move DMAFlags to Flags.hpp. 2021-12-04 08:26:28 -05:00
Thomas Harte
3b027c4593 Switch and -> or for testing transitions from ::PlayingLow. 2021-12-04 08:24:41 -05:00
Thomas Harte
42d3bdd373 Adds a begin_state template. 2021-12-04 07:20:17 -05:00
Thomas Harte
57789092c1 Keep audio fetches in bounds. 2021-12-03 07:16:21 -05:00
Thomas Harte
6bc5268cbd Reload period counter on low -> high transition. 2021-12-02 18:43:02 -05:00
Thomas Harte
e6fe36f45c Add buffer-length assert; add <tuple> where std::tuple_size is used. 2021-12-02 12:53:20 -05:00
Thomas Harte
06b6f85d55 Correct stereo. 2021-12-02 11:15:29 -05:00
Thomas Harte
d6f1ea50a6 Switch to slightly more straightforward presumption of no data wanted. 2021-12-02 09:41:16 -05:00
Thomas Harte
9554869886 Simplify DMA logic. 2021-12-02 09:33:02 -05:00
Thomas Harte
364059551c Add extra notes per errata, plus bonus state code repetitions. 2021-12-02 09:30:52 -05:00
Thomas Harte
06340b1ad7 Advance DMA pointer, treat audio as signed, request data on low -> high transition. 
There's now some audio, sometimes when there should be. But it's not correct.
 2021-12-01 18:34:54 -05:00
Thomas Harte
d23511860d Attempts audio output. 2021-12-01 06:01:58 -05:00
Thomas Harte
a8dd4660b2 Adds a pipeline for audio output. 2021-12-01 05:37:58 -05:00
Thomas Harte
eb3a0eb3c7 Attempt full implementation of collisions. 2021-11-29 18:39:33 -05:00
Thomas Harte
cd0148e0bc Switch to a default 1mb of Chip RAM. 2021-11-29 16:55:45 -05:00
Thomas Harte
8584ee609f Support a fetch window start on line 0. 2021-11-28 05:37:49 -05:00
Thomas Harte
373847e2b7 Avoid posting redundant key events. 2021-11-28 05:31:00 -05:00
Thomas Harte
84f7d8dfc2 Factors out pixel generation, adds HAM. 2021-11-28 05:06:30 -05:00
Thomas Harte
e057a7d0dd Attempts to implement sprite/playfield priorities. 2021-11-27 15:03:46 -05:00
Thomas Harte
7bab15bf99 Minor copy improvements. 2021-11-27 11:38:41 -05:00
Thomas Harte
dac40630fd Adds support for the Blitter-busy flag to WAIT and SKIP. 2021-11-27 11:36:15 -05:00
Thomas Harte
33bfa1b81c Move BitplaneShifter adjacent to expand_bitplane_byte. 2021-11-26 18:29:09 -05:00
Thomas Harte
8fc27dc292 Moves bitplane collection and shifter out of Chipset.[h/c]pp. 2021-11-26 18:16:24 -05:00
Thomas Harte
f8e8f18be5 Switch to std::clamp. 2021-11-26 18:10:29 -05:00
Thomas Harte
8b38c567d2 Add missing #include for std::clamp. 2021-11-26 18:08:39 -05:00
Thomas Harte
cd53e42d79 Resolve operator precedence. 2021-11-26 18:08:10 -05:00
Thomas Harte
bea6cf2038 Move mouse and joystick into a separate file, give a common parent. 2021-11-26 17:50:47 -05:00
Thomas Harte
eca80f1425 Sprites: avoid magic constants, ensure proper DMA resumption. 2021-11-26 16:02:18 -05:00
Thomas Harte
1c0962e53c Move sprites into their own source file. 2021-11-26 15:30:31 -05:00
Thomas Harte
4b21549ff4 Add a couple of static asserts. 2021-11-26 15:23:54 -05:00
Thomas Harte
30d7b0129b Correct sprite ordering within pairs. 2021-11-26 11:58:50 -05:00
Thomas Harte
ce6877d6e4 Sprites: infer part of DMA state from slot, no access during blank. 
Also sets the proper vertical blank length.
 2021-11-26 09:37:52 -05:00
Thomas Harte
0ab5177637 Allow DMAState::FetchStopAndControl on y == v_stop_. 2021-11-25 14:29:12 -05:00
Thomas Harte
276cbfa505 Simplify sprite state machine. 
This now better matches the explanation given on Page 133 of the Amiga System Programmer's Guide.
 2021-11-25 14:08:55 -05:00
Thomas Harte
012084b37b Fix exclusive fill, sizing, eliminate ECS call-ins. 
The clock test now proceeds further, but still doesn't seem to pass.
 2021-11-24 17:25:32 -05:00
Thomas Harte
7af5737ec5 Switch to LOG. 2021-11-24 16:15:40 -05:00
Thomas Harte
0df8173536 Merge branch 'master' into Amiga 2021-11-24 08:58:03 -05:00
Thomas Harte
f5d3d6bcea Splits the lowpass filter into push and pull variants. 2021-11-21 15:37:29 -05:00
Thomas Harte
a8a99f647f Further improves framing. 2021-11-21 08:13:55 -05:00
Thomas Harte
ff68b26c44 Push HSYNC 11 slots over, to its proper position, and add a frame crop. 2021-11-20 12:39:50 -05:00
Thomas Harte
a94b4f62fd Takes a stab at attached sprites. 2021-11-19 14:19:47 -05:00
Thomas Harte
bcc959d938 Sprites: deconflate vertical and modification flags; disarm on CTL not POS. 2021-11-19 08:03:10 -05:00
Thomas Harte
cf25d8a378 Increase logging (but leave it disabled). 2021-11-19 08:01:23 -05:00
Thomas Harte
693d46f8ea Mask by index, not colour. 2021-11-18 05:36:38 -05:00
Thomas Harte
3496ebd1d7 Constrain sprite fetches to Chip RAM. 2021-11-17 17:49:42 -05:00
Thomas Harte
be763cf7fe Expose joystick to the world. 2021-11-17 15:33:46 -05:00
Thomas Harte
c3b4bee210 Adds a joystick class. 2021-11-17 14:26:51 -05:00
Thomas Harte
6df0227ab1 Hacks in a basic effort at dual playfields. 2021-11-16 18:26:27 -05:00
Thomas Harte
2a3a7fa8a0 Reset will_request_interrupt. 2021-11-15 16:00:35 -05:00
Thomas Harte
50a6496399 Avoids over-greedy DMA. 2021-11-15 12:31:15 -05:00
Thomas Harte
c99dee86dd Adds missing low -> high actions, implements more transitions. 2021-11-15 12:29:32 -05:00
Thomas Harte
0c5bb9626b Separates state transitions and tests. 2021-11-15 05:29:28 -05:00
Thomas Harte
a9971917f5 Attempts a translation of Commodore's documentation. 2021-11-14 14:54:33 -05:00
Thomas Harte
4c62611da3 Adds enough state machine to get into the near-incomprehensible stuff on the right. 2021-11-14 10:48:50 -05:00
Thomas Harte
47f36f08fb Switches to a synchronous audio state machine; renames advance -> advance_dma. 
I can worry about how to just-in-time things once I better understand the hardware in general.
 2021-11-13 15:53:41 -05:00
Thomas Harte
f906bab1a5 Provides feedback on interrupt flags, starts on state machine. 2021-11-13 11:05:39 -05:00
Thomas Harte
fffc03c4e4 Propagates time to the audio subsystem. 2021-11-12 15:30:52 -05:00
Thomas Harte
0a94184d6b Provides a greater wealth of audio data. 2021-11-11 09:24:15 -05:00
Thomas Harte
7be3578497 Adds a target for audio writes. 2021-11-09 07:11:23 -05:00
Thomas Harte
eeaccb8ac0 Implements clear_all_keys. 2021-11-08 17:49:09 -05:00
Thomas Harte
8ef9a932aa Adds inclusive fill test; fixes inclusive fills. 2021-11-07 14:26:13 -08:00
Thomas Harte
31e22e4cfb Provides full serial input. 2021-11-07 05:19:16 -08:00
Thomas Harte
ecfe68d70f Introduce the principle that a Serial::Line can be two-wire — clock + data. 2021-11-06 16:54:20 -07:00
Thomas Harte
c0c2b5e3a9 Post key actions to the nominated serial line. 
Albeit that I'm still thinking through whether I want the option of including a clock on Serial::Line. It'd be natural in one sense — there's already one built in — but might weaken Serial::Line's claim to be a one-stop shop for both enqueued and real-time connections without a reasonable bit of extra work.
 2021-11-06 12:03:09 -07:00
Thomas Harte
471e13efbc Transcribes keycodes. 2021-11-04 18:54:42 -07:00
Thomas Harte
c9bf2dda16 Attempt implementation of disk sync. 2021-11-02 18:18:59 -07:00
Thomas Harte
3ceb378b9b Relocate disk logic into a separate compilation unit. 2021-11-02 17:35:23 -07:00
Thomas Harte
1cf1c90511 Adds support for interlaced output. 2021-11-02 14:34:03 -07:00
Thomas Harte
d989825216 Add bonus notes on VPOSR. 2021-11-02 03:47:39 -07:00
Thomas Harte
3976420b88 Retains a little more of output controls. 2021-11-01 17:15:36 -07:00
Thomas Harte
2f1ce5fe43 Switch to using the swizzled palette for playfield output. 2021-11-01 14:44:30 -07:00
Thomas Harte
42145a5b8a Delay bitplane installation until end of slot. 2021-11-01 14:18:58 -07:00
Thomas Harte
4e66017205 Enable sprite reuse and toggle to inactive when visible region is over. 2021-10-31 16:52:48 -07:00
Thomas Harte
299d517449 Performs a first implementation of fill mode. 2021-10-31 14:36:31 -07:00
Thomas Harte
4c1ab6ff25 Rethinks bitplane stops. 2021-10-31 09:01:38 -07:00
Thomas Harte
16f31cab6a Avoid duplication of CIA select test. 2021-10-30 12:05:18 -07:00
Thomas Harte
02c88e6826 VHPOSR's fields are the other way around. 2021-10-30 12:04:46 -07:00
Thomas Harte
d25804f4a2 Throws in official register names. 2021-10-29 14:05:11 -07:00
Thomas Harte
edb75e69cb Implement bitplane modulos. 2021-10-29 11:29:22 -07:00
Thomas Harte
f3e895f17c Tag intended unused parameters. 2021-10-29 06:21:02 -07:00
Thomas Harte
b952d73e83 Disallow programmatic setting of blitter status. 2021-10-29 06:19:57 -07:00
Thomas Harte
07facc0636 Takes a stab at BZERO. 2021-10-28 18:12:46 -07:00
Thomas Harte
da1a69be27 Caps mouse speed. 
Also takes another guess at CIA interrupt bits. To no avail.
 2021-10-27 18:38:02 -07:00
Thomas Harte
b10f5ab110 Apply A mask when loading into barrel shifter. 2021-10-26 20:02:28 -07:00
Thomas Harte
b4286bb42b Modulos are subtracted in descending mode. 2021-10-26 07:21:51 -07:00
Thomas Harte
139d35c6f9 Switches to basic use of sprite shifters. 2021-10-25 20:58:48 -07:00
Thomas Harte
cb24457b4a Starts on a two-at-a-time sprite shifter. 2021-10-25 16:30:30 -07:00
Thomas Harte
9f3efb7f05 Limits graphical output to [all but one bit] of the display window. 2021-10-25 14:12:23 -07:00
Thomas Harte
e6001e0f22 Shifts bitplanes irrespective of output window. 2021-10-25 13:59:39 -07:00
Thomas Harte
c6535bf035 Switches bitplane shifter to returning four high-res pixels at a time. 2021-10-25 13:34:36 -07:00
Thomas Harte
7118a515e0 Reduce logging in trustworthy areas. 2021-10-23 20:36:41 -07:00
Thomas Harte
952451c9b8 Add mouse input. 2021-10-23 20:17:13 -07:00
Thomas Harte
610327a04e Fix sprite H start bit order. 2021-10-22 23:20:20 -07:00