MiSTer FPGA Forum

How long are you waiting after the screen goes black ?

The message says that the RUN button will allow you to skip the conversation... after about 5-10 seconds of the black screen (where it loads some program code), it will begin a conversation between characters (in Japanese).

Pull request submitted (for PC Engine support). The XE1AP module should easily be used with other cores which might support it (for developers familiar with those cores). Apparently, there were a small number of games on Megadrive, MegaCD, 32X, MSX, X68000, and FM Towns Marty which used this (I think computers may have supported it more than consol...

Well then it becomes a question of what portions of the system are deemed “off limits”. Fundamentally, USB is handled by the HPS (ARM-based hard processor), and passed to the FPGA side via the framework. Without the framework, you can give up on USB use, as reimplementing all of that is a high bar. Most early microcomputers implemented an array of ...

If you use a USB keyboard, the framework does decoding for you... you only need to look at another existing computer core to see how it's handled.

Megahurtz wrote: ↑Wed Sep 07, 2022 1:02 am Just a guess, but maybe it inverts the Y axis to allow you to use flight controls with games that didn’t have a built in option for inverted up/down.

No - it actually switches all three of the analog axes' purposes:

The throttle control becomes the X-axis
The Y-axis on the stick becomes the throttle
The X-axis on the stick becomes the Y-axis

sonik wrote: ↑Tue Sep 06, 2022 8:21 pm There's manual scans here (in japanese)
https://imgur.com/gallery/uD6vN

"We see a shift switch that makes the left analog work like flight controls or like a normal joystick."
No idea what this means.

Based on those scans, it seems that among the three analog axes (x, y, throttle), it rearranges their usages.

Nice Topic. The Controller is also compatible with some games on the FM Towns. I got one of these controllers and i own a Sharp Cyberstick which is compatible with the XE1-AP in PC Mode. I use the Cyberstick on X68000, FM Towns and via adapter on the PC Engine but it doesn´t have the MD <> PC Switch. So, is there a way to use the Cyberstick with a...

I've got one of these and the XHE-3 adaptor to use with the PC Engine. 4 (possibly 5) games on PC Engine support this, all of them from NEC Avenue: AfterBurner II Forgotten Worlds Operation Wolf Outrun Thunder Blade (possibly) I have been studying the signalling protocol recently, and some initial information can be found in this document: https://...

According to this doc the 65C02 and 65816 differ in behavior with the SBC opcode but ADC should be the same. http://www.6502.org/tutorials/decimal_mode.html#A It would be good if this behavior can be verified on hardware using test roms. ...And the HuC6280 is different as well on various points of 6502-ness. But your point about running tests to b...

Yes, true, unless you are "missing something important". If there were a save file to test with, it could be brought to real hardware to confirm; as it is, it will need to wait for somebody to reach that point to first confirm the same experience as you, and then try to obtain a save file for testing purposes.

I haven’t played this in many years, but it sounds like you don’t have “something” you are expected to have at this point. It would be very weird for a core issue to have such a subtle effect on an individual game though. If you have a save game from before entering the cave, I can try it on my own hardware/software, and see if there is any differe...

There are a few games which don't implement the RUN+SELECT reset - or suppress it in certain spots.

Also, for the games/areas where it is implemented, it is sensitive to which of those two buttons was hit first (and the fact that other buttons shouldn't simultaneously be pressed).

The Jotego cores and the DB9 cores are not part of the official repository.
But for people using the update-all script, they may not be able to easily distinguish which downloaded cores are the official ones versus unofficial...

It’s used in open collector/open drain mode.

nope its easy, no need to make it harder than it is, and also, no making of servants because of pride reasons, thanks whats the diffculty, you literally just take the original fpga wiring, and fit the correct wires. Hey, be my guest if it's so easy. If you can do this, you're a lot more advanced than I am at this. Literally, I'm not saying not to....

This falls under the heading of “easier said than done”. But I think most people won’t be able to appreciate all of the myriad ways in which this is difficult until they roll up their sleeves and see for themselves, so I recommend that you take a close look at how you might approach it in detail, and how to overcome some of those hurdles. I agree t...

The Logitech K400+ keyboard is not a bluetooth keyboard - it's just wireless.

There were other messages on the forum about that "BT PAIRING" message coming up for people when there was no reason for it... but I don't recall the details.

and maybe srg320 wants to avoid having to deal with things like unwanted bug reports or possibly harsh criticisms because of the WIP status of the core. Both the PSX and the Saturn have the problem that they are extremely popular, and the more interested people there are, the more likely it is that some "black sheep" can bother you. But ...

splintercell70 wrote: ↑Fri Jun 17, 2022 7:23 pm Is Shining Force 3 fully playable yet?

Assume nothing is fully-playable yet.

Now my question: given that my goal is to implement retro computers on FPGA, where do I go from here? What is the most basic retro PC I could implement for the sake of practice? I imagine I will eventually work up to the PC-88 before taking on the PC-98, but I imagine the even the PC-88 is still out of my reach at my current stage of learning. I w...

Absolutely appreciate this is pre alpha code dshadoff. As I am in the software development business for a corporation, I am used to seeing work at this stage and understand the time and effort that goes into this. Understood. But not all anxious participants will be in the same position as you; I wanted to set their expectations appropriately. Onc...

Remember that this core is not in release status.
It is not in Beta status.
It is not even in Alpha status.

This is a developer work-in-progress, and there shouldn’t be any expectations of it at this point.

Consolidating is often a false economy; if something needs to get fixed on one console, currently only one console's operation needs to be verified. Consolidation would amplify the amount of testing required, and likely increase the complexity for anybody to work on the internals. In order to justify this, there should be some real tangible benefit...

It depends on the script and it depends on the demands of the core. There are cases where the HPS has trouble keeping up with the core, let alone doing so in competition with a script. Here's an example of one of the things I found: https://github.com/MiSTer-devel/TurboGrafx16_MiSTer/issues/176 ...So I can easily understand that it's disabled in or...

Yet you are claiming that the TZXduino has a bug, consisting of assuming that the input impedance of the devices it is designed to connect to are reasonably low. Sorry but I don't buy that. That is not what I am saying - I am saying that the TZXduino, outputing a fixed and unchanging non-zero voltage for several seconds, is doing something that a ...

I'm glad it works for you. I did see it stall a few times, but it's different each time.
I think I understand the mechanism, but I don't have a total solution yet. But it's good that the issue is now only intermittent.

By the way, the way your TZXduino is holding the output level at a non-zero level during the gap is actually something that tape recorders of the era could not have done because of their output circuitry. This is a bug in TZXduino. Have you tried an actual cassette player from the pre-digital era ? To answer the other question, any modifications to...

And in my description above, "zero" is the running average for a period of time (generally 1/60th of second) on my cores, so it's a sliding scale and easily accommodated for, within the core.

But as I mentioned, I can't speak for the internals specific to the Spectrum core.

I see what you are describing, and you are correct that with just a capacitor it will take about a second or two to drift back to centre. Electrically, you can cause this to drift back toward centre faster by forcing a load/shunt as you suggest. However, this is also something which can be accommodated by the core itself so long as it doesn't excee...

I see you still haven’t actually tried it and seen it for yourself.
That’s too bad.