Thomas Harte
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4d1d19a464
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Introduces an intermediate buffer for Apple II video data.
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2018-08-12 20:36:08 -04:00 |
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Thomas Harte
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434d184503
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Corrects deserialisation order in double low res mode.
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2018-08-11 22:53:06 -04:00 |
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Thomas Harte
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60ab6f0c2a
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Entrusts IIe-esque character logic fully to the ROM.
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2018-08-11 18:45:39 -04:00 |
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Thomas Harte
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55f2fccf5e
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Extends correct text handling to 80-column mode.
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2018-08-04 22:25:29 -04:00 |
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Thomas Harte
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099d66804e
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Makes colour burst phase explicit.
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2018-08-04 19:29:34 -04:00 |
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Thomas Harte
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086596c28e
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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.
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2018-08-04 19:17:04 -04:00 |
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Thomas Harte
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558b96bc05
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Corrects IIe text display.
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2018-08-04 16:52:29 -04:00 |
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Thomas Harte
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c91eaaf8da
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Takes a stab at double low-res graphics.
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2018-07-31 21:45:09 -04:00 |
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Thomas Harte
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a36f37d240
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Introduces a 1/14th delay in output of double high res.
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2018-07-31 21:29:51 -04:00 |
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Thomas Harte
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3f56683342
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Fixes order of deserialisation between auxiliary and base RAM.
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2018-07-30 23:08:45 -04:00 |
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Thomas Harte
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5aa0b17720
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Improves IIe paging further.
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2018-07-29 23:02:27 -04:00 |
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Thomas Harte
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ede2696a77
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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.
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2018-07-24 22:15:42 -04:00 |
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Thomas Harte
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59b9e39022
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Starts the process of supporting the Apple IIe graphics modes.
Albeit that I'm not yet even up on the proper soft switches.
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2018-07-23 22:14:41 -04:00 |
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Thomas Harte
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640a84d456
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Shift the h-within-v pulse to eliminate a curved top line.
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2018-06-24 11:27:18 -04:00 |
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Thomas Harte
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55ab305dbf
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Introduces equalisation pulses for the Apple II.
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2018-06-23 22:11:39 -04:00 |
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Thomas Harte
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d380595ad4
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Unrolls the loops for slightly fewer conditionals.
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2018-06-03 07:27:03 -04:00 |
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Thomas Harte
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d84b8700a3
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Switches the Apple II to one byte per pixel.
Just trying to get it right for now; optimisation to come.
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2018-06-02 22:03:45 -04:00 |
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Thomas Harte
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8dd7c6ef23
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Eliminates 'reversed_c' as I no longer believe low-resolution colour numbers are reversed.
Also gets explicit about phase.
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2018-05-29 22:30:45 -04:00 |
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Thomas Harte
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dea9892a85
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Attempts to implement vapour lock bus behaviour.
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2018-05-13 18:53:32 -04:00 |
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Thomas Harte
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0b771ce61a
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Removes all instances of the copyright symbol.
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2018-05-13 15:19:52 -04:00 |
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Thomas Harte
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850a394eb5
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Corrects graphics 'carry' — the potential holdover into delayed bytes.
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2018-04-26 19:26:43 -04:00 |
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Thomas Harte
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244721a6f8
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Corrects graphics mode address generation.
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2018-04-25 22:26:01 -04:00 |
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Thomas Harte
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b8ae283049
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Implements correct text inverse/flashing.
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2018-04-19 22:14:22 -04:00 |
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Thomas Harte
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5f1c210746
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Simplifies and corrects low-resolution colour generation.
Possibly disproving the premise for this whole experiment, all colours seem immediately to work correctly. Hmmm.
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2018-04-18 21:41:11 -04:00 |
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Thomas Harte
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f6c2f6e896
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Slightly adjusts colour burst logic to fix transition lines in mixed mode.
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2018-04-18 20:39:12 -04:00 |
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Thomas Harte
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a07c99d778
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Completes first draft of Apple II video hardware.
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2018-04-17 22:04:02 -04:00 |
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Thomas Harte
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1c605d58e3
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Removes the CRT requirement for an integral relationship between cycles and samples.
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2018-04-16 20:00:56 -04:00 |
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Thomas Harte
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6a79ce9eb1
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Adds enough to the Apple II's video that I can see what's going on with soft switches.
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2018-04-15 21:55:26 -04:00 |
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Thomas Harte
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465c38f03c
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Extends the keyboard protocol and adds keyboard input to the Apple II.
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2018-04-15 21:11:30 -04:00 |
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Thomas Harte
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be05d51e07
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Now gives something a lot like the proper character output.
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2018-04-15 20:31:04 -04:00 |
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Thomas Harte
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abe47b6ed8
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Makes first attempt at a stable display area. Not entirely successful.
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2018-04-15 18:00:40 -04:00 |
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Thomas Harte
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61659faeaa
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Adds the necessary call-outs to allow implementation of video generation.
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2018-04-15 15:13:07 -04:00 |
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Thomas Harte
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7efee9b52b
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Does the bare minimum to create a class skeleton for Apple II implementation.
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2018-04-14 19:46:15 -04:00 |
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