byuu says:
The bad instruction was due to the instruction before it fetching one
too many bytes. Didn't notice right away as the disassembler got it
right.
The register map was incorrect on the active 16-bit flags.
I fixed and improved some other things along those lines. Hooked up some
basic KnGE (VPU) timings, made it print out VRAM and some of the WRAM
onto the screen each frame, tried to drive Vblank and Hblank IRQs, but
... I don't know for sure what vector addresses they belong to.
MAME says "INT4" for Vblank, and says nothing for Hblank. I am wildly
guessing INT4==SWI 4==0xffff10, but ... I have no idea. I'm also not
emulating the interrupts properly based on line levels, I'm just firing
on the 0→1 transitions. Sounds like Vblank is more nuanced too, but I
guess we'll see.
Emulation is running further along now, even to the point of it
successfully enabling the KnGE IRQs, but VRAM doesn't appear to get much
useful stuff written into it yet.
I reverted the nall/primitive changes, so request for testing is I guess
rescinded, for whatever it was worth.
byuu says:
Changelog:
- fixed a few TLCS900H CPU and disassembler bugs
- hooked up a basic Neo Geo Pocket emulator skeleton and memory map;
can run a few instructions from the BIOS
- emulated the flash memory used by Neo Geo Pocket games
- added sourcery to the higan source archives
- fixed ternary expressions in sfc/ppu-fast [hex_usr]
byuu says:
Changelog:
- Interface::displays() -> vector<Display> → Interface::display() -> Display
- <Platform::videoRefresh(display>, ...) → <Platform::videoFrame>(...)
- <Platform::audioSample>(...) → <Platform::audioFrame>(...)
- higan, icarus: use AboutDialog class instead of ad-hoc
implementations
- about dialog is now modal, but now has a clickable website URL
- icarus: reverted if constexpr for now
- MSX: implemented basic CPU, VDP support
I took out the multiple displays support thing because it was never
really implemented fully (Emulator::Video and the GUIs both ignored it)
or used anyway. If it ends up necessary in the future, I'll worry about
it then.
There's enough MSX emulation now to run Mr. Do! without sound or input.
I'm shipping higan with C-BIOS 0.29a, although it likely won't be good
enough in the future (eg it can't do BASIC, floppy disk, or cassette
loading.) I have keyboard and (not working) AY-3-8910 support in a
different branch, so that won't take too long to implement. Main problem
is naming all the darned keyboard keys. I think I need to change
settings.bml's input mapping lines so that the key names are values
instead of node names, so that any characters can appear inside of them.
It turns out my MSX set uses .rom for the file extensions ... gods. So,
icarus can't really import them like this. I may have to re-design
icarus' importer to stop caring about the file extension and instead ask
you what kind of games you are importing. There's no way icarus can
heuristically guess what systems the images belong to, because many
systems don't have any standardized magic bytes.
I'm struggling with where to put SG-1000, SC-3000, ColecoVision, Coleco
Adam stuff. I think they need to be split to two separate higan
subfolders (sg and cv, most likely ...) The MS/GG share a very
customized and extended VDP that the other systems don't have. The Sega
and Coleco older hardware share the same TMS9918 as the MSX, yet have
very different memory maps and peripherals that I don't want to mix
together. Especially if we start getting into the computer-variants
more.
byuu says:
Changelog:
- nall: converted range, iterator, vector to 64-bit
- added (very poor) ColecoVision emulation (including Coleco Adam
expansion)
- added MSX skeleton
- added Neo Geo Pocket skeleton
- moved audio,video,resource folders into emulator folder
- SFC heuristics: BS-X Town cart is "ZBSJ" [hex_usr]
The nall change is for future work on things like BPA: I need to be able
to handle files larger than 4GB. It is extremely possible that there are
still some truncations to 32-bit lurking around, and even more
disastrously, possibly some -1s lurking that won't sign-extend to
`(uint64_t)0-1`. There's a lot more classes left to do: `string`,
`array_view`, `array_span`, etc.
Tim Allen