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Commit Graph

20 Commits

Author SHA1 Message Date
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
55ab305dbf Introduces equalisation pulses for the Apple II. 2018-06-23 22:11:39 -04:00
Thomas Harte
d380595ad4 Unrolls the loops for slightly fewer conditionals. 2018-06-03 07:27:03 -04:00
Thomas Harte
d84b8700a3 Switches the Apple II to one byte per pixel.
Just trying to get it right for now; optimisation to come.
2018-06-02 22:03:45 -04:00
Thomas Harte
8dd7c6ef23 Eliminates 'reversed_c' as I no longer believe low-resolution colour numbers are reversed.
Also gets explicit about phase.
2018-05-29 22:30:45 -04:00
Thomas Harte
dea9892a85 Attempts to implement vapour lock bus behaviour. 2018-05-13 18:53:32 -04:00
Thomas Harte
0b771ce61a Removes all instances of the copyright symbol. 2018-05-13 15:19:52 -04:00
Thomas Harte
850a394eb5 Corrects graphics 'carry' — the potential holdover into delayed bytes. 2018-04-26 19:26:43 -04:00
Thomas Harte
244721a6f8 Corrects graphics mode address generation. 2018-04-25 22:26:01 -04:00
Thomas Harte
b8ae283049 Implements correct text inverse/flashing. 2018-04-19 22:14:22 -04:00
Thomas Harte
5f1c210746 Simplifies and corrects low-resolution colour generation.
Possibly disproving the premise for this whole experiment, all colours seem immediately to work correctly. Hmmm.
2018-04-18 21:41:11 -04:00
Thomas Harte
f6c2f6e896 Slightly adjusts colour burst logic to fix transition lines in mixed mode. 2018-04-18 20:39:12 -04:00
Thomas Harte
a07c99d778 Completes first draft of Apple II video hardware. 2018-04-17 22:04:02 -04:00
Thomas Harte
1c605d58e3 Removes the CRT requirement for an integral relationship between cycles and samples. 2018-04-16 20:00:56 -04:00
Thomas Harte
6a79ce9eb1 Adds enough to the Apple II's video that I can see what's going on with soft switches. 2018-04-15 21:55:26 -04:00
Thomas Harte
465c38f03c Extends the keyboard protocol and adds keyboard input to the Apple II. 2018-04-15 21:11:30 -04:00
Thomas Harte
be05d51e07 Now gives something a lot like the proper character output. 2018-04-15 20:31:04 -04:00
Thomas Harte
abe47b6ed8 Makes first attempt at a stable display area. Not entirely successful. 2018-04-15 18:00:40 -04:00
Thomas Harte
61659faeaa Adds the necessary call-outs to allow implementation of video generation. 2018-04-15 15:13:07 -04:00
Thomas Harte
7efee9b52b Does the bare minimum to create a class skeleton for Apple II implementation. 2018-04-14 19:46:15 -04:00