I can't test it right now, but based on skimming the keycode ROMs I think it's Scroll Lock.
Search found 217 matches
- Tue Dec 07, 2021 12:40 am
- Forum: X68000, PC88, PC98
- Topic: X68000 Beta - Updates and Releases
- Replies: 520
- Views: 312074
- Sun Dec 05, 2021 6:07 pm
- Forum: Genesis / Mega Drive, Sega CD, 32X
- Topic: Something wrong with genesis core? EU as default and slowdown?
- Replies: 8
- Views: 7585
Re: Something wrong with genesis core? EU as default and slowdown?
The positions of Header and File Ext swapped in release 20211126 to make Header the default, so if you had the setting saved as Header on an older version, upgrading to the latest version will switch it to File Ext (and vice-versa). You might just need to switch it back in the new version.
- Sat Dec 04, 2021 4:50 pm
- Forum: Genesis / Mega Drive, Sega CD, 32X
- Topic: Something wrong with genesis core? EU as default and slowdown?
- Replies: 8
- Views: 7585
Re: Something wrong with genesis core? EU as default and slowdown?
This sounds similar to what happens if the Auto Region option is set to "File Ext" and an NTSC ROM with a .MD extension is loaded. What is your Auto Region option set to, and what extension do your files have?
- Wed Dec 01, 2021 2:59 am
- Forum: General Discussions
- Topic: Renesas plans to ship small real low cost FPGA
- Replies: 6
- Views: 3653
Re: Renesas plans to ship small real low cost FPGA
The size of these devices seems hard to pin down without an proper overview of the architecture. In one place, the article says that "the first devices ship with 1K and 2K Look Up Tables". In another place, it says that the SLG47910V has an array "[e]quivalent to 900 4-bit LUTs". I'm not sure which of those is being equated to 5...
- Mon Nov 29, 2021 5:09 am
- Forum: Sony PlayStation (PSX)
- Topic: PS1 compiling the core...
- Replies: 10
- Views: 8084
Re: PS1 compiling the core...
The core is still somewhat immature/unstable and under very active development. Any build posted would likely be obsolete in a matter of days, if not hours. If anyone were to distribute RBF files, it would probably only make sense either as a totally impartial CI process or by way of the author asking for testing of specific revisions.
- Sun Nov 28, 2021 10:11 pm
- Forum: Neo Geo MVS / AES / CD
- Topic: Fatal Fury 3's Endings Are Broken
- Replies: 7
- Views: 7662
- Sun Nov 28, 2021 9:33 pm
- Forum: Sony PlayStation (PSX)
- Topic: PSX Compatibility List
- Replies: 183
- Views: 92234
Re: PSX Compatibility List
I downloaded and compiled the latest core, the readme states CDs must be single track and EU region. Try US region, i couldnt get a single EU game to work. I don't think the "region only EU" line in the readme means that Europe/PAL games are required, but rather that the ID string fed to the system from the CD controller is always "...
- Thu Nov 25, 2021 6:45 pm
- Forum: Neo Geo MVS / AES / CD
- Topic: Freeze Playing with Keyboard?
- Replies: 10
- Views: 8359
Re: Freeze Playing with Keyboard?
This seems to be a bug in Metal Slug 3-5. You can push left+right all you want, but doing that and shooting or throwing a grenade locks up the game.
There might be a conversation to have about disallowing these input combinations by default since they tend to cause strange behavior.
There might be a conversation to have about disallowing these input combinations by default since they tend to cause strange behavior.
- Thu Nov 25, 2021 4:47 am
- Forum: X68000, PC88, PC98
- Topic: X68000 Beta - Updates and Releases
- Replies: 520
- Views: 312074
Re: X68000 Beta - Updates and Releases
It's the weirdest fucking thing... I'm intermittently getting Directory not found now. It works sometimes and sometimes it doesn't. I have no idea what the hell is causing this... I can think of a couple things that might cause this behavior: 1) Insufficient power supply causing the drive to be unreliable. 2) Two file systems covering the same por...
- Wed Nov 24, 2021 11:14 pm
- Forum: Development for MiSTer
- Topic: Controller issue with core development
- Replies: 5
- Views: 4880
Re: Controller issue with core development
Yeah, it's a bit tough to reason about without more context. The only scenario I can imagine at the moment that doesn't seem completely off the wall is something along these lines: A CPU that vectors interrupts based on the data bus The inputs are applied to the data bus during the interrupt vector cycle One order of inputs happens to invoke the ex...
- Tue Nov 23, 2021 3:38 pm
- Forum: Neo Geo MVS / AES / CD
- Topic: Freeze Playing with Keyboard?
- Replies: 10
- Views: 8359
Re: Freeze Playing with Keyboard?
If the OSD still works and game sound continues to play, then the system as a whole isn't locked up. At the very least, the HPS is still running, the scaler is still generating HDMI output and accepting OSD input, and the core's sound subsystem is still running. I think this suggests one of: The scaler stopped processing core video input The core's...
- Sat Nov 20, 2021 1:48 am
- Forum: X68000, PC88, PC98
- Topic: X68000 Beta - Updates and Releases
- Replies: 520
- Views: 312074
Re: X68000 Beta - Updates and Releases
I've seen a couple claims floating around on the web that it's public domain, but I doubt that those are accurate. It's fairly common for people to misuse the term "public domain" for things that are still under copyright but have a license allowing redistribution by the general public.
- Sat Nov 20, 2021 12:02 am
- Forum: X68000, PC88, PC98
- Topic: X68000 Beta - Updates and Releases
- Replies: 520
- Views: 312074
Re: X68000 Beta - Updates and Releases
I've never heard of it being open-source, but I believe Sharp authorized noncommercial distribution of the X68000 ROMs and associated system software (e.g. Human68K and SX-Window) for use with emulators due to some user group activism. There's a document that appears to be a license text, although machine translation mangles it pretty badly, so it ...
- Tue Nov 16, 2021 3:42 am
- Forum: Other Computer / System Cores
- Topic: Apple II Core
- Replies: 251
- Views: 145253
Re: Apple II Core
The absence of color artifacts (...) was probably a deliberate enhancement by the original author. Yea, it is. He explains why and how he did it in the pdf. The thing I'm addressing at the moment is specific to the "mixed" modes, and I didn't see anything in the PDF describing it. Prof. Edwards might have decided that it wasn't important...
- Mon Nov 15, 2021 7:16 pm
- Forum: Other Computer / System Cores
- Topic: Apple II Core
- Replies: 251
- Views: 145253
Re: Apple II Core
The absence of color artifacts in the text part of mixed modes seems pretty straightforward and was probably a deliberate enhancement by the original author. I can't speak to the accuracy of the output, though (questionable eyes + using the scaler on a relatively old, budget TN monitor).
- Sun Nov 14, 2021 6:09 pm
- Forum: Other Computer / System Cores
- Topic: Apple II Core
- Replies: 251
- Views: 145253
Re: Apple II Core
At the moment, the keyboard code only handles single byte keycodes (as far as I can see). That complicates detecting the right ALT key , which is a multi-byte code: E0 11. That will require some extra work on the keyboard controller. I haven't tried this out yet, but I think the framework handles the E0 byte and sets ps2_key[8] to indicate its pre...
- Sat Nov 13, 2021 5:18 pm
- Forum: Other Computer / System Cores
- Topic: Apple II Core
- Replies: 251
- Views: 145253
Re: Apple II Core
Reset is currently mapped to the user button and LAlt+LCtrl+RAlt (by default; there are a few options in MiSTer.ini). I think on the original Apple II and II+ the reset key alone asserted the reset signal (which it does on the current core), while later models required the combination of Ctrl+Reset to prevent accidental resets (and Ctrl+open apple+...
- Sat Nov 13, 2021 3:27 am
- Forum: Other Computer / System Cores
- Topic: Apple II Core
- Replies: 251
- Views: 145253
Re: Apple II Core
2) The backspace should print a checkered square when pressed. Right now it is acting like the left arrow key. I'm torn on this. The Apple II keyboard layout is somewhat odd in that: 1) The left arrow key effectively is a backspace key (produces 0x08, used to correct typos) 2) The delete key (0x7F) is positioned where modern keyboards have a backs...
- Sun Oct 24, 2021 9:27 pm
- Forum: Other Computer / System Cores
- Topic: Apple II Core
- Replies: 251
- Views: 145253
Re: Apple II Core
I'm not sure about the details, but I think the scan code lookup table and character ROM built into the core are for a UK keyboard. SHIFT+3 produces a pounds sign instead of a number sign, for example.
- Thu Oct 14, 2021 10:49 pm
- Forum: X68000, PC88, PC98
- Topic: X68000 beta core preview - 10/14
- Replies: 44
- Views: 31483
Re: X68000 beta core preview - 10/14
The original author of the core has been releasing updates via his blog, and at some point it stopped requiring the secondary SD card. I'm not sure which of those changes have been merged into anyone's repo.
- Sun Oct 10, 2021 4:03 pm
- Forum: Other Computer / System Cores
- Topic: Apple II Core
- Replies: 251
- Views: 145253
Re: Apple II Core
That's nice, to me, I find the idea of the system simulating the spinning disk aesthetically pleasing. Though ideally, it should spin that disk, it shouldn't care what data registers the CPU looks at or anything, no hacks, no nothing -- if the 6502 doesn't read it in time, the byte is just lost. I assume that's what the real hardware does. 6502 wi...
- Fri Oct 08, 2021 2:10 pm
- Forum: Other Computer / System Cores
- Topic: Apple II Core
- Replies: 251
- Views: 145253
Re: Apple II Core
I don't think the SRAM framework is a great fit for floppies, especially on Apple II. The key thing is that there isn't necessarily a 1:1 relationship between program disk and save disk the way that there is for cartridge and SRAM. Some programs only save user data to the program disk itself, some only save to a separate save disk, and some can sav...
- Thu Oct 07, 2021 10:37 pm
- Forum: Other Computer / System Cores
- Topic: Apple II Core
- Replies: 251
- Views: 145253
Re: Apple II Core
I'd have thought, the thing going into 'track_memory' to tell it where to index would be the same for both read and write. Those expressions probably would be similar in a version of the code that supports floppy writes. As it is now, the write path exclusively handles the top-level core filling the track RAM with data from the image file, while t...
- Thu Oct 07, 2021 6:01 pm
- Forum: Other Computer / System Cores
- Topic: Apple II Core
- Replies: 251
- Views: 145253
Re: Apple II Core
The 'phase' stuff in here is pretty weird. Not sure what's going on. It's a simulation of the stepper motor that moves the head between tracks. In this context, "phase" is stepper motor jargon for a set of coils that are energized. The motor won't actually complete a "step" without an appropriate sequence of phases being energi...
- Mon Sep 27, 2021 10:16 pm
- Forum: Arcade Cores
- Topic: JT CPS 1.5 and 2 cores: No HDMI audio.
- Replies: 2
- Views: 1546
Re: JT CPS2: No HDMI audio
I used to have a similar problem with the Neo Geo core (although this was on an older PC monitor with internal speakers, not a modern TV). In that case, the problem was somehow tied to the change in display timings. Switching to another input and back or power cycling the monitor after loading the core fixed it. At some point it stopped happening; ...
- Sun Sep 19, 2021 4:41 pm
- Forum: Sega Saturn
- Topic: Sega Saturn Core in Development
- Replies: 942
- Views: 420178
Re: Sega Saturn Core in Development
Would the Sega Saturn core be interchangeable with the Sega ST-V games? [all assuming development goes as planned of course] ST-V has an extra I/O chip to handle the standard player/coin inputs rather than routing those through SMPC, so it's not just a matter of loading the right ROMs into a Saturn core. That being said, the chip in question seems...
- Mon Sep 13, 2021 9:28 pm
- Forum: Sega Saturn
- Topic: Sega Saturn Core in Development
- Replies: 942
- Views: 420178
Re: Sega Saturn Core in Development
I'm not aware of anything that actually runs directly from cartridge space). KOF and Ultraman? I haven't specifically looked at games, but Sega told developers to never store code in cartridges, and graphics/sound assets would need to be copied to an internal RAM before use. Action Replay obviously runs code stored on a cartridge, but I believe it...
- Sun Sep 12, 2021 6:45 pm
- Forum: Sega Saturn
- Topic: Sega Saturn Core in Development
- Replies: 942
- Views: 420178
Re: Sega Saturn Core in Development
I don't think the Saturn has that much RAM. Would likely be more about bandwidth than capacity Not just bandwidth, but the ability to have consistent access timings with the various concurrent things that are happening. There are 6 physically independent RAMs if I haven't somehow double-counted: CPU async RAM, CPU+SCU SDRAM, VDP1 RAM, VDP2 RAM, fr...
- Sun Sep 12, 2021 5:01 pm
- Forum: Arcade Cores
- Topic: TMNT, Simpsons, Sunset Riders - Konami core?
- Replies: 20
- Views: 13199
Re: TMNT, Simpsons, Sunset Riders - Konami core?
It's also based on TMS34020, which is a fairly complex chip that not many games used. I doubt we'd see it implemented before the TMS34010-based Williams/Midway hardware (which is a topic for another thread).
- Sun Sep 05, 2021 8:36 pm
- Forum: Arcade Cores
- Topic: TMNT, Simpsons, Sunset Riders - Konami core?
- Replies: 20
- Views: 13199
Re: TMNT, Simpsons, Sunset Riders - Konami core?
It seems like Konami did eventually sort of standardize on the GX System for their 2D games... just in time for the industry's big shift to PlayStation-based hardware. Before then, though, there was a lot of "remixing" of previous boards.