bedrock-pc/src, branch v0.3.1Bedrock emulator and assembler for Windows and Linux
https://code.benbridle.com/bedrock-pc/atom?h=v0.3.12024-04-16T03:29:12ZFix memory, input, screen, and file devices2024-04-16T03:29:12ZBen Bridlebridle.benjamin@gmail.com2024-04-16T03:27:45Zurn:sha1:a07d1585deb41bc40777045ac36b1643d2574980
The memory device was never being allocated any memory, the input device
wasn't scrolling correctly, the screen device was rendering sprites
incorrectly, and the device ID of the file device had not been changed
over from 0xA to 0x9.
Update devices to match new specifications2024-04-15T22:51:26ZBen Bridlebridle.benjamin@gmail.com2024-04-15T22:51:13Zurn:sha1:6b3796c9a0d3a2f1422bcbde4790c43417659722Implement new file device interface2024-01-30T18:39:07ZBen Bridlebridle.benjamin@gmail.com2024-01-30T18:38:50Zurn:sha1:28101de56231252ca0cfa6a9f107b75112c9acad
This is a complete redesign of the file device. The most notable
addition is the ability to ascend and descend the file tree.
Prevent overflow errors on stream device pointers2024-01-30T18:37:54ZBen Bridlebridle.benjamin@gmail.com2024-01-29T05:33:58Zurn:sha1:30d2f099c9edf4f59fbbdd6686988ae7b0622ba2
The stream device pointers now use wrapping semantics in order to
prevent overflow errors.
Change stream device to use buffered streams2024-01-30T18:37:54ZBen Bridlebridle.benjamin@gmail.com2024-01-29T05:31:45Zurn:sha1:e4cdcf4f5082f90abd9e259ccc215ecbb1973ab5
Wrapping stdin and stdout with BufReader and BufWriter makes reads and
writes more efficient by bundling multiple characters into a single
read or write operation. In practice, this hasn't made a difference to
running the numbers demo, but that demo spends the majority of processor
time converting values to decimal strings.
Refactor code without changing functionality2024-01-30T18:37:54ZBen Bridlebridle.benjamin@gmail.com2024-01-28T01:31:12Zurn:sha1:521e525763723cbc5d65b37ff47f34af48f50a2f
An effort to make the code shorter and more readable. This mostly
affects the code for the clock device.
Change clock cumulative timer to use 256th ticks instead of seconds2024-01-30T18:37:54ZBen Bridlebridle.benjamin@gmail.com2024-01-28T01:20:59Zurn:sha1:a4d06fd54ab22bbdd6b0dc9d5af199fc8be13591
The "Cumulative seconds" port of the CLOCK device has been changed
to be called "Cumulative timer", with the units changing from seconds
to 1/256 second ticks.
Make orthogonal line drawing operations work with signed coordinates2024-01-05T23:22:17ZBen Bridlebridle.benjamin@gmail.com2024-01-05T23:22:17Zurn:sha1:03023ea0aa987ec7bbcf2ca5019a1db2dedc3493
The vector line drawing operation of the screen device uses optimised
methods when drawing horizontal and vertical lines. The emulator now
interprets the coordinates of these lines as signed values, to allow for
the correct rendering of orthogonal lines where the coordinates of the
left or top edges are off-screen. Diagonal lines are yet to be tackled.
The bounding-box calculations shared by the rectangle and orthogonal
line drawing methods have also been split off into their own method,
significantly reducing the code duplication between all four of the
methods which require this functionality.
This commit also makes aesthetic changes to the code in the
draw_diagonal_line method to improve readability and brevity, as a part
of the changes made to the draw_line method when the points parameter
was removed from each of the three lower line-drawing methods.
Reduce width of ScreenDevice::draw_sprite method2024-01-05T23:11:03ZBen Bridlebridle.benjamin@gmail.com2024-01-05T23:11:03Zurn:sha1:4735200272ac8a8165bd43784a41ca5b3725bc16
This method was exceeding the 80-character line limit, which was
interfering with the centering behaviour of my text editor.
Move ScreenDevice::fill_layer method2024-01-05T22:31:48ZBen Bridlebridle.benjamin@gmail.com2024-01-05T22:31:48Zurn:sha1:f82cda3c621c4efcaab040a9c11029fa11e53b05
The method was between the two draw_sprite methods, but it fits better
just after draw_pixel.