Peter Evans
58190f0c9b
Move notify_refresh into the proper file
2018-03-07 17:08:16 -06:00
Peter Evans
9f09be93a9
Implement (true? better?) framerate cycle
2018-03-07 16:20:29 -06:00
Peter Evans
7edf0c5dbd
Display @ symbols on startup
...
There's actually a lot going on here to make the @ symbol display
happen.
The @ symbols are the visual representation of NUL-character bytes. They
are inverse video, as dictated by the Apple //e technical reference. As
part of the bootup sequence, those bytes are overwritten with space
characters.
As part of the work, we now have a table of rows and columns that map to
display buffer addresses.
2018-03-06 22:12:41 -06:00
Peter Evans
ec522f259e
Add block comments to describe source files
2018-02-12 21:15:20 -06:00
Peter Evans
c010c10ce2
Add missing docblocks
2018-02-03 17:46:56 -06:00
Peter Evans
2ae272af3a
Stop flickering issue by clearing before drawing
2018-01-24 20:04:53 -06:00
Peter Evans
d581194bbc
Add apple text functions and refactor draw logic for text
2018-01-24 16:11:08 -06:00
Peter Evans
775a145480
Rework screen display logic for more efficiency
2018-01-23 14:52:16 -06:00
Peter Evans
d4bf5da480
Draw text in 40 column mode
2018-01-18 16:21:25 -06:00
Peter Evans
8d9b48912e
Add memory injection to 6502; main memory in apple2
...
Note that memory _is_ now managed in apple2, and _not_ in mos6502.
2018-01-10 21:28:05 -06:00
Peter Evans
49d475d534
Documentation
2018-01-01 17:41:15 -06:00
Peter Evans
2aeef09f97
Remove unused msb variable
2018-01-01 17:12:41 -06:00
Peter Evans
efb8f04555
Use vm_area for draw_rect.
...
This simplifies and to some degree normalizes the way we reference areas
in the vm subsystem.
2017-12-27 16:42:30 -06:00
Peter Evans
c7b830bb4a
Switch references from SDL_Rect to vm_area
...
We still use SDL_Rect internally, but we want to abstract the use of it
in our API. The only thing the rest of the app should care about is the
vm_area struct.
2017-12-27 16:31:02 -06:00
Peter Evans
f50d599545
Beginnings of lo-res graphics
2017-12-24 15:07:24 -06:00
Peter Evans
7b19279f1d
No need for this comment any longer
2017-12-22 20:45:26 -06:00
Peter Evans
4ad690212f
Blank out the space we want to render a character
2017-12-22 17:49:36 -06:00
Peter Evans
29652b2368
Implement draw text functionality
2017-12-22 15:48:48 -06:00
Peter Evans
979ca65f43
Add bitmap font to apple2, remove rectangle draw
2017-12-21 23:33:04 -06:00
Peter Evans
7d62548248
Add the bones of the draw functions and file
2017-12-20 21:33:15 -06:00
