Thomas Harte
24644f1dd1
Adds a low-pass filter, picked entirely by ear, and switches to composite output, at least for now.
2018-10-07 18:39:03 -04:00
Thomas Harte
76f3b9f6ba
Fixed: paging writes don't obstruct RAM.
2018-10-06 14:26:00 -04:00
Thomas Harte
7830cda912
Implements line querying and most of line interrupts.
2018-10-04 22:50:35 -04:00
Thomas Harte
e9328d819e
Switches to RGB output, at least for development.
2018-09-30 20:47:03 -04:00
Thomas Harte
2e4c4c3e91
Makes some attempt to implement paging.
...
This causes several of the 32kb games to be recognised by the BIOS and permitted to start, so it really really may be time to stop deferring work on the VDP.
2018-09-24 21:34:42 -04:00
Thomas Harte
7515fa8a98
Ensures the SG1000 gets an unadulterated TMS and SN.
2018-09-23 22:24:29 -04:00
Thomas Harte
5b9e7213dd
Adds a couple of joystick inputs.
...
SG1000 titles all seem to work now.
2018-09-23 21:55:07 -04:00
Thomas Harte
2253341904
This now goes far enough for the only SG1000 game I'm testing to start up.
...
Which hopefully gives me as much as I need to implement joypads, etc, and definitively get to just the VDP being outstanding.
2018-09-23 17:42:42 -04:00
Thomas Harte
e155dc8d6e
Adds fairly standard memory map indirection.
2018-09-23 17:36:30 -04:00
Thomas Harte
00b2db4fb9
Ensures the Master System is informed when it should pretend to be an SG1000.
2018-09-23 16:34:47 -04:00
Thomas Harte
f59386f523
Adds just enough input logic that the Sega sound now plays.
2018-09-23 16:05:37 -04:00
Thomas Harte
38a1fde3bf
Attempts to permit Master System interrupts.
2018-09-23 00:07:46 -04:00
Thomas Harte
40c7a63fb5
Makes a first attempt at Master System IO decoding.
2018-09-22 23:45:29 -04:00
Thomas Harte
d9e65cd758
Ensures neither the ColecoVision nor the MSX processes mid-cycles.
2018-09-21 22:53:35 -04:00
Thomas Harte
e511261b04
Adds a Master System class, so that SMSs can end up somewhere.
2018-09-21 22:13:07 -04:00
Thomas Harte
0d01346ad4
Advertises SMS support and goes as far as realising it needs to spawn a Master System.
2018-09-20 22:04:28 -04:00
Thomas Harte
e7f4babf41
Starts taking steps towards SMS/GG and V9938/9958 support.
...
Specifically: routine namespace stuff, plus the intention to move to a table-based operation+cost version of timing. Reordering works fine for the TMS, and probably would also for the SMS/GG, but it'd be problematic with the command engine of the V9938/9958 and maintaining a consistent set of code is easier.
2018-09-17 22:59:16 -04:00
Thomas Harte
a8b116e217
Turns down the Apple II brightness a little.
...
So that light blue is more like a blue.
2018-09-17 20:08:20 -04:00
Thomas Harte
868cd5cb09
Improves alignment request.
2018-09-12 20:27:02 -04:00
Thomas Harte
dec18d9acc
Restores full pixel output to the Electron.
2018-09-12 20:25:30 -04:00
Thomas Harte
a7508bc2ae
Switching explicitly to one pixel per sample eliminates the need for a bookender.
2018-09-12 20:11:17 -04:00
Thomas Harte
a38639d099
Eliminates the concept of an iCoordinate.
...
Real-life precision appears not to support the idea of sub-sample pixel storage.
2018-09-12 20:05:39 -04:00
Thomas Harte
c6e94bc2a6
Adds missing #include.
2018-09-11 21:55:03 -04:00
Thomas Harte
09dafb1a79
Simplifies and corrects MSX pasting behaviour.
...
Now including mapping \n -> \r.
2018-09-11 21:46:28 -04:00
Thomas Harte
36ff2105fb
Updates C-style (bool) casts.
2018-09-11 20:37:15 -04:00
Thomas Harte
5445081c96
It's eight pixels that aren't written in double output mode, not four.
2018-09-10 21:38:05 -04:00
Thomas Harte
6e9cd5cb21
Resolves over-brightness created by over-composition.
2018-09-09 20:30:43 -04:00
Thomas Harte
8d79a1e381
Corrected fat low-res implementation.
...
As per comment of awanderin that "the odd addresses don't get their pixels auto-shifted by the hardware as with normal lo-res".
2018-09-09 10:06:21 -04:00
Thomas Harte
d70f5da94e
Attempts an implementation of the undocumented low res + annunciator 3 graphics mode.
2018-09-08 20:51:15 -04:00
Thomas Harte
afeec09902
Gets explicit about DHIRES being annunciator 3; implements four-colour high res mode.
2018-09-06 23:23:19 -04:00
Thomas Harte
0526ac2ee2
Slightly increases const correctness.
...
The converters from source data to output pixels do not modify the source data. It's a shame there's no `restrict` in C++.
2018-09-05 11:36:40 -04:00
Thomas Harte
8b661fb90f
Introduces an extra level of indirection for text mapping.
2018-09-05 10:26:08 -04:00
Thomas Harte
dab7d3db1b
Merge branch 'master' into 40ColumnTextCorruption
2018-08-30 20:24:47 -04:00
Thomas Harte
d53b38ec7e
Correction: 0xc011 et al get the keyboard value in bits 0 to 6 and the switch value in bit 7.
2018-08-30 20:18:36 -04:00
Thomas Harte
2e04c4442c
Adds mirrors for keyboard input and the audio toggle.
2018-08-27 21:14:21 -04:00
Thomas Harte
0599d9602e
Ensures no out-of-bounds accesses to inverses on a IIe.
2018-08-26 23:02:31 -04:00
Thomas Harte
234bef2a88
Adds default
to make it explicit that fetch_address
is initialised.
2018-08-24 22:26:03 -04:00
Thomas Harte
1f491e764e
Nudges visible area slightly to the right.
2018-08-24 22:08:11 -04:00
Thomas Harte
114a43a662
Corrects improper indexing for byte shift.
2018-08-24 21:58:43 -04:00
Thomas Harte
97a89aaf4d
Factors out the stuff of deferred action interleaving, as I suspect it'll come in handy.
2018-08-24 20:04:26 -04:00
Thomas Harte
61e46399dc
About face! There should be no delay on serialisation, but a delay on interpretation-affecting soft switches.
2018-08-22 21:56:45 -04:00
Thomas Harte
e802f6ecc2
Rearranges draw loop around a fixed-size 568-sample line buffer.
2018-08-19 22:31:04 -04:00
Thomas Harte
4209f0e044
Moves memory collection into a separate loop.
2018-08-18 21:54:24 -04:00
Thomas Harte
33576aa2c4
Uses const
to ensure output_* are properly constrained.
2018-08-18 21:36:48 -04:00
Thomas Harte
17bf1a64bf
Moves the stuff of generating pixels out of the main loop.
2018-08-18 18:44:31 -04:00
Thomas Harte
f8d46f8f3d
Merge branch 'master' into AppleDelay
2018-08-18 14:11:21 -04:00
Thomas Harte
be01203cc1
Starts to expand the range of supported 6502s.
...
This fully implements the NES 6502 because, well, it's virtually no extra work, and ensures that RDY takes effect on write cycles on 65C02s.
2018-08-13 22:17:22 -04:00
Thomas Harte
4d1d19a464
Introduces an intermediate buffer for Apple II video data.
2018-08-12 20:36:08 -04:00
Thomas Harte
cb47575860
Eliminates stdout chatter.
2018-08-11 22:57:54 -04:00
Thomas Harte
434d184503
Corrects deserialisation order in double low res mode.
2018-08-11 22:53:06 -04:00
Thomas Harte
7374c665e8
Corrects regression in video flushing.
2018-08-11 19:57:39 -04:00
Thomas Harte
60ab6f0c2a
Entrusts IIe-esque character logic fully to the ROM.
2018-08-11 18:45:39 -04:00
Thomas Harte
a13eb351da
Implements the Enhanced IIe, other than some text selection errors.
2018-08-11 10:26:30 -04:00
Thomas Harte
76a73c835c
Forces 6502 consumers to declare which model — the original, 65C02 or 65SC02.
...
All present machines use a regular 6502.
2018-08-06 20:06:07 -04:00
Thomas Harte
de68e70246
Fixes various IIe video deficiencies.
...
Specifically:
* the double-high resolution switches should be read/write; and
* the other IIe-specific switches should cause a video update for real-time effect.
2018-08-05 17:47:23 -04:00
Thomas Harte
ce14cc8677
Flips meaning of analogue input bits, correcting most joystick titles.
...
Mysteriously, some functioned correctly before this. But they continue to do so.
2018-08-05 17:36:01 -04:00
Thomas Harte
55f2fccf5e
Extends correct text handling to 80-column mode.
2018-08-04 22:25:29 -04:00
Thomas Harte
26624d7652
Fixes vertical blank signal; it should be the other way around.
2018-08-04 20:57:02 -04:00
Thomas Harte
85fb4773b0
Tweaks Apple key mapping and implements reset_all_keys
.
2018-08-04 20:31:37 -04:00
Thomas Harte
099d66804e
Makes colour burst phase explicit.
2018-08-04 19:29:34 -04:00
Thomas Harte
086596c28e
Adds reading of vertical blank and implements the full IIe keyboard logic.
...
i.e. there are now two Apple keys, and shift isn't assumed.
2018-08-04 19:17:04 -04:00
Thomas Harte
3aeb4213fe
Implements the C010 read value.
2018-08-04 17:57:02 -04:00
Thomas Harte
558b96bc05
Corrects IIe text display.
2018-08-04 16:52:29 -04:00
Thomas Harte
e97cc40a2c
Corrects typo in Cx-page ROM paging.
2018-08-04 12:44:58 -04:00
Thomas Harte
c4f86cc324
The Disk II now being its proper speed, withdraws the quickload option.
2018-08-03 21:20:21 -04:00
Thomas Harte
74a2f717b3
Turns down the composite signal amplitude a little, to help colour distinctness.
2018-08-01 18:52:42 -04:00
Thomas Harte
c91eaaf8da
Takes a stab at double low-res graphics.
2018-07-31 21:45:09 -04:00
Thomas Harte
a36f37d240
Introduces a 1/14th delay in output of double high res.
2018-07-31 21:29:51 -04:00
Thomas Harte
c773d3501a
Implements the INTC8ROM switch.
...
Finally causing the Zellyn tests to pass! Is this nightmare behind me?
2018-07-31 19:00:46 -04:00
Thomas Harte
5810f9b3f9
Fixes high resolution address range and switching logic.
2018-07-30 23:23:18 -04:00
Thomas Harte
3f56683342
Fixes order of deserialisation between auxiliary and base RAM.
2018-07-30 23:08:45 -04:00
Thomas Harte
16ccbdefd6
Of course, | has higher precedence than ?. Classic!
2018-07-30 23:08:22 -04:00
Thomas Harte
e9aaa5bbdf
Factors out the page-mapping function.
...
For one less potential source of failure.
2018-07-30 22:23:48 -04:00
Thomas Harte
ecb26e3281
Corrections: slot_C3_rom_ works the other way around; 80STORE doesn't affect most of RAM but does always affect the text screen.
...
Also factored out `set_zero_page_paging` for consistency.
2018-07-30 19:54:25 -04:00
Thomas Harte
5aa0b17720
Improves IIe paging further.
2018-07-29 23:02:27 -04:00
Thomas Harte
632b37ecec
Attempts an implementation of auxiliary memory.
2018-07-29 10:41:12 -04:00
Thomas Harte
c905de2e40
Restores IIe ROM-over-card paging.
2018-07-28 13:31:25 -04:00
Thomas Harte
bc2afe69e1
Accepting that memory mapping on a IIe is more complicated than I anticiapted, introduces mapping for all pages.
...
Also picks a name for the Unenhanced Apple IIe ROM.
2018-07-28 13:02:49 -04:00
Thomas Harte
894998b163
Merge branch 'master' into IIe
2018-07-28 10:54:04 -04:00
Thomas Harte
3c33ccd730
Eliminates various blank lines.
2018-07-28 10:52:34 -04:00
Thomas Harte
5f2b9b2d5a
Implements the alternative zero page soft switch.
2018-07-25 22:10:21 -04:00
Thomas Harte
5c4506a9db
Talks the IIe into proceeding to a beep and an improperly-formed logo.
2018-07-25 21:43:12 -04:00
Thomas Harte
55a6431fb3
Puts in enough logic to be able to launch a non-functional IIe.
2018-07-25 18:58:34 -04:00
Thomas Harte
ede2696a77
Edges further towards implementing the IIe video subsystem.
...
All video-specific switches are in place, and mostly honoured, and a IIe machine configuration is advertised at least.
2018-07-24 22:15:42 -04:00
Thomas Harte
59b9e39022
Starts the process of supporting the Apple IIe graphics modes.
...
Albeit that I'm not yet even up on the proper soft switches.
2018-07-23 22:14:41 -04:00
Thomas Harte
e339d169c5
Ensures the joystick doesn't obstruct tape input.
2018-07-12 22:10:05 -04:00
Thomas Harte
58484e8f37
Adds joystick support for the MSX.
2018-07-12 21:42:47 -04:00
Thomas Harte
8503589828
Corrects failure to retain OS.
2018-07-10 22:05:50 -04:00
Thomas Harte
efd812cf22
Ensures no buffer overrun when installing the OS ROM.
2018-07-10 21:54:36 -04:00
Thomas Harte
57f161e64c
Corrects documentation of the media target.
2018-07-10 21:42:09 -04:00
Thomas Harte
0897210969
Neither cartridge machine should be a media target; their media can't be changed at runtime.
2018-07-10 21:40:13 -04:00
Thomas Harte
7e58a44771
Renames ConfigurationTarget
to MediaTarget
as per its newly-reduced interface.
2018-07-10 21:32:28 -04:00
Thomas Harte
3862fdb44c
Simplifies initialisation procedure for all machines.
...
With the side effect of allowing every machine to try to load only the ROMs that it needs.
2018-07-10 20:00:46 -04:00
Thomas Harte
c97c5fa03a
[Re-]recalibrates CRT retrace period and affected view windows.
...
In the hope of moving the CPC closer to the real CTM visible area.
2018-07-05 22:07:18 -04:00
Thomas Harte
640a84d456
Shift the h-within-v pulse to eliminate a curved top line.
2018-06-24 11:27:18 -04:00
Thomas Harte
04f6cb1750
Merge branch 'master' into AppleIIEqualisation
2018-06-23 23:10:29 -04:00
Thomas Harte
a93f8103ad
Zooms out the CPC a little more.
...
To fix the maximum amount of content that I can, at least for now.
2018-06-23 22:15:34 -04:00
Thomas Harte
55ab305dbf
Introduces equalisation pulses for the Apple II.
2018-06-23 22:11:39 -04:00
Thomas Harte
52c9f9e89e
Merge branch 'master' into CPCJoysticks
2018-06-23 16:43:49 -04:00
Thomas Harte
1c6af279b2
Picks more appropriate cropping now that I'm obeying HSYNC-as-blank.
2018-06-23 16:40:17 -04:00