Thomas Harte
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49f0ab0f15
|
Add note to self.
Although I still think there may be some issue lurking.
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2021-06-28 21:31:55 -04:00 |
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Thomas Harte
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a5c57e777e
|
VRES appears to work negatively in attribute mode too.
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2021-06-28 21:24:13 -04:00 |
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Thomas Harte
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3c59042388
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Fixes initial state for 1kHz.
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2021-06-28 21:08:41 -04:00 |
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Thomas Harte
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919e211bc4
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Reduces number of interrupt-related sequence points.
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2021-06-28 19:30:12 -04:00 |
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Thomas Harte
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daa0737ce4
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Ensure addresses tick upwards even during sync/burst; correct 2/4/8bpp character sizing.
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2021-06-28 19:00:51 -04:00 |
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Thomas Harte
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36805cb120
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Correct tone channel interrupts, remove dead warning.
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2021-06-27 23:21:00 -04:00 |
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Thomas Harte
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7de69e9874
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Makes an attempt to round out the timed interrupts.
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2021-06-27 23:09:11 -04:00 |
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Thomas Harte
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b93575bbcc
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Spots that b0 and b2 of 0xb4 are 'dividers', not enables.
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2021-06-27 22:33:20 -04:00 |
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Thomas Harte
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116e0f0105
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Interupts 1kHz and 50Hz interrupts, while edging towards tone generator interrupts.
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2021-06-27 22:08:38 -04:00 |
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Thomas Harte
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e4a650aaff
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Implements the 1Hz interrupt.
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2021-06-27 21:47:21 -04:00 |
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Thomas Harte
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b5312b9ba0
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get_interrupt_line can be const.
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2021-06-27 21:37:11 -04:00 |
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Thomas Harte
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6afee7bb9b
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Captures appropriate fields.
No action yet.
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2021-06-27 21:36:55 -04:00 |
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Thomas Harte
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2f53b105bb
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The Enterprise is now an Activity::Source; also sketches out the owner of Dave's timed interrupt logic.
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2021-06-27 21:02:04 -04:00 |
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Thomas Harte
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be19fa9dde
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This mapping needs to know where it will occur.
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2021-06-27 17:30:09 -04:00 |
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Thomas Harte
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81e9ba5608
|
This is correct from the Enterprise's side of things, I think.
I just need to complete the missing part of JustInTimeActor. After I do some empirical testing of this.
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2021-06-27 17:24:21 -04:00 |
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Thomas Harte
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f2d7b9f6a9
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Apply a crop, allow time until Z80 slot to be a future-based query.
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2021-06-27 17:13:07 -04:00 |
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Thomas Harte
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1ea034310a
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Edge up very close to video waits.
I just need to implement back conversions that include marginal phase over in the JustInTimeActor.
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2021-06-27 16:28:01 -04:00 |
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Thomas Harte
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895d98e266
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Implements out-of-video-area pauses.
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2021-06-27 16:11:22 -04:00 |
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Thomas Harte
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903e343895
|
Attempts to complete Dave's audio duties.
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2021-06-27 14:06:49 -04:00 |
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Thomas Harte
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f8b7c59616
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Corrects tone frequency.
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2021-06-26 23:51:43 -04:00 |
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Thomas Harte
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fcd267a3f9
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Starts implementing noise.
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2021-06-26 23:48:53 -04:00 |
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Thomas Harte
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f8bb66d2a0
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Attempts an essentially-complete implementation of tone channels.
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2021-06-26 23:39:59 -04:00 |
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Thomas Harte
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f2336d2efc
|
I think reloads occur after overflow, not before.
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2021-06-26 23:16:00 -04:00 |
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Thomas Harte
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c2d093fa3c
|
Respect user volume input.
Basic tones are now present. Neato!
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2021-06-24 22:27:02 -04:00 |
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Thomas Harte
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1a97cc8a91
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Start making some effort towards audio generation.
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2021-06-24 22:21:01 -04:00 |
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Thomas Harte
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c34a548fa0
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Ensure character pixel reads can't go out of bounds.
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2021-06-24 22:19:50 -04:00 |
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Thomas Harte
|
520c3c9218
|
Corrects colour deserialisation.
Long story short: the documentation I'm reading inexplicably lists the bits in reverse order. Luckily, a lot of the other documentation doesn't.
|
2021-06-24 20:59:04 -04:00 |
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Thomas Harte
|
9230cf1726
|
Corrects bug when left_ or right_margin_ = 0.
|
2021-06-24 20:28:50 -04:00 |
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Thomas Harte
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6e616972a5
|
Better binds margin tests to window movements; simplifies line parameter addressing.
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2021-06-24 18:55:15 -04:00 |
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Thomas Harte
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f98888824d
|
Switches to an overt active/inactive state machine.
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2021-06-24 18:34:21 -04:00 |
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Thomas Harte
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6c8b23e708
|
Alters 4bpp mapping; adds character mode 4bpp and 8bpp.
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2021-06-23 19:35:47 -04:00 |
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Thomas Harte
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2c2bb3765f
|
Withdraws the EPDOS option.
At least for now; it's something to worry about later.
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2021-06-23 19:32:34 -04:00 |
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Thomas Harte
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0d165740ea
|
Honours memory size request.
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2021-06-22 21:48:55 -04:00 |
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Thomas Harte
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8319aca351
|
Correct syntax errors.
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2021-06-22 20:50:03 -04:00 |
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Thomas Harte
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a66734883a
|
Starts sketching out Dave.
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2021-06-22 19:33:41 -04:00 |
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Thomas Harte
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e062780968
|
Extends back to 128kb and stops halting on unrecognised ports.
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2021-06-22 06:15:42 -04:00 |
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Thomas Harte
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3acd0be1f7
|
Copy and paste 2bpp character support.
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2021-06-21 23:27:13 -04:00 |
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Thomas Harte
|
c1678d7be7
|
Corrects exposition and transmission of drive selection.
What a klutz I've been.
|
2021-06-21 22:56:25 -04:00 |
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Thomas Harte
|
117f9a9794
|
Adds notes on intended meaning of status register.
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2021-06-21 07:31:58 -04:00 |
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Thomas Harte
|
b49cc407c6
|
Adds some guesses as to the EXDos expansion.
... with plenty left to do.
|
2021-06-20 22:30:27 -04:00 |
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Thomas Harte
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954386f1cc
|
Creates a shell for the disk-drive add-on card.
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2021-06-20 20:50:23 -04:00 |
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Thomas Harte
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d7ff6bd04d
|
Adds necessary declarations to install a DOS ROM.
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2021-06-20 20:30:54 -04:00 |
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Thomas Harte
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6025516f9f
|
Ensure addresses increment even when there's no target for pixels.
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2021-06-20 14:31:02 -04:00 |
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Thomas Harte
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d8b9cdf7a2
|
Correct multiplier.
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2021-06-20 14:25:37 -04:00 |
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Thomas Harte
|
09dbff39f2
|
Also map keypad to F keys.
This is a pragmatic and arguably Apple-centric decision. But also it's fairly arbitrary, as the Enterprise doesn't have a number pad.
|
2021-06-20 14:25:28 -04:00 |
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Thomas Harte
|
2fe15a6168
|
Switch to idealised Nick clock rate.
|
2021-06-20 14:21:56 -04:00 |
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Thomas Harte
|
07dc26f8fa
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Adds TODO to resolve screen jumping.
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2021-06-19 23:41:29 -04:00 |
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Thomas Harte
|
0e1e8c7faa
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Attempts to support the panoply of EXOS and BASIC versions.
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2021-06-19 22:59:09 -04:00 |
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Thomas Harte
|
23e26e0333
|
Attempts to complete handling of VRES.
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2021-06-19 22:00:19 -04:00 |
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Thomas Harte
|
fadb04f3f3
|
Attempts to implement LSBALT and MSBALT.
|
2021-06-19 21:57:26 -04:00 |
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