Commit Graph

109 Commits

Author SHA1 Message Date
transistor
a9b8633531 Added mouse support, but it's not used yet 2022-10-02 20:39:02 -07:00
transistor
4cb423d85a Fixed minifb frame updater to allow slower framerates
If the sim is running slower than 60Hz, it was using the frame limiter
to not apply because no frame was drawn, and so it would end up running
at full speed.  Minifb can save the last frame without cloning it, and
redraw the same frame if no new frame is ready, which allows the limiter
to still delay the next frame, so slower speeds work.  This was also
preventing things that didn't update the screen from allowing inputs
including escape to have any effect
2022-10-02 13:07:15 -07:00
transistor
a9d51fb919 Added DAC to ym2612 and changed mixing method 2022-10-02 10:29:34 -07:00
transistor
7c279613cc Moved AddressRepeater to core, and renamed AddressAdapter
AddressRepeater now takes the range it should repeat over, which only
really affects its reported size.

AddressAdapter is now AddressRightShifter, which is literally the operation
it performs, where the input is still the bits to shift the address right by
2022-10-01 21:01:56 -07:00
transistor
2d6044084d Modified how frames are updated
It turns out to not be too much of a performance issue to allocate
a new frame each time one is produced, so to reduce lock contention
I added a queue where frames are added to and taken from without
locking the frame for the whole update.  I'm hoping this will give
more flexibility to frontend implementations, which can simply
skip or repeat frames if needed.
2022-10-01 12:12:25 -07:00
transistor
5278c301ef Added .smd file decoding 2022-09-30 11:24:11 -07:00
transistor
da980b8ae8 Fixed regression when fixing interrupt handling in 68k
Mortal Kombat 2 was working but somewhere while getting the harte
tests to work, I fixed interrupts to change the flags before they're
pushed to the stack, in order to match the expected behaviour from
the tests when an address error occurs (sr is changed and the stack
push causes the error).  I correctly saved the state of sr in the
function for group0 interrupts, to push to the stack later, but the
normal interrupts was saving sr *after* the flags were changed...
Now it saves sr beforehand

I also included some changes to the gfx interface to allow taking
frames, to fix a compile error introduced by the last commit.
2022-09-29 20:21:00 -07:00
transistor
82644db3fc Added dummy audio device to disable audio while still simulating the devices 2022-09-29 19:55:12 -07:00
transistor
083f3607ba Major reorganization into crates
I wanted to make this a bit more modular, so it's easier in theory to
write external crates that can reuse bits, and selectively compile in
bits, such as adding new systems or new cpu implementations
2022-09-24 23:14:03 -07:00