mikepavone

12 ms·

91.
by mikepavone 3y ago
I disagree that things hit a wall, but there are a lot of smaller unknowns: - Work RAM refresh timing seems to be a bit variable and the exact logic for the timing has been unclear - The exact point when scroll values are latched from the i
92.
by mikepavone 3y ago
> I would definitely be curious to know why - the emulation of Genesis is notably behind most other video game consoles but I always assumed this was because of less interest and not because of any unique technical challenges. I guess it
93.
by mikepavone 3y ago
Analogue hasn't given a lot of detail about how they developed the Mega Sg, but to the extent that they did any reverse engineering beyond what the emulation community had already done they seem to have used similar techniques. At one
94.
by mikepavone 3y ago
The author is targeting the DE-10 Nano which is also used in MiSTer setups so that's probably the best choice
95.
by mikepavone 3y ago
> Is it just that the write once nature of the media makes pre-composing the file system a pain? I think it's sort of the opposite. Read-only/write-once file systems can be simpler because they don't have to be structured
96.
by mikepavone 3y ago
> I understand game developers want to make money but what is the logic here? I think the logic here is that they don't want to get a huge fine from CNIL (French data regulator) and possibly other GDPR countries that choose to inter
97.
by mikepavone 3y ago
> Discord screen share did not work at all. I guess the official app doesn’t support wayland. This will probably get fixed somewhat soon. We have a branch with some work to improve screenshare on Linux, including xdg-desktop-portal suppo
98.
by mikepavone 3y ago
The core of Wayland does seem to be pretty good, but I think adoption has been hurt by a tendency to push things out of the core protocol and the lack of a unified implementation between major desktop environments. Screenshots and screen ca
99.
by mikepavone 3y ago
Pretty much all the other submersibles that can reach that depth, including the Mir used for that wedding, can only hold 2-3 people including the pilot. The Titan could hold 5 people
100.
by mikepavone 3y ago
I have an Astro Slide 5G from them (though bought via ebay) and I'm happy with my purchase, but it's kind of hard to recommend. Their track record on actually shipping pre-orders is kinda lousy (why I resorted to buying one second
101.
by mikepavone 3y ago
I'm not sure why AMD hasn't just directly implemented CUDA, but they did ship HIPify which can translate CUDA code to HIP. Doesn't work for everything, but seems to work for a lot of important ML code. ROCm stack doesn't
102.
by mikepavone 3y ago
Unfortunately, the ROCm stack seems to use a fair bit of separate kernel code and it's not nearly as stable in my experience. I have a 5700 XT (not officially supported by ROCm, but close enough to some other cards that some have had s
103.
by mikepavone 3y ago
> I always assumed it's 16 bit internally as well? Correct, it's mostly 16-bit internally. Registers are 32-bit, but are split into 16-bit halves. The ALU is mostly 16-bit, but has a 32-bit shift register which is used for both
104.
by mikepavone 3y ago
> What I remember happening was that Apple was all-in on helping Khronos come up with what would eventually become Vulkan, but Khronos kept dragging their feet on getting something released. Apple finally got fed up and said, "We ne
105.
by mikepavone 4y ago
Thanks for the explanation! Between your comment and the Undersampling wiki page diydsp linked to I think I am on the path to enlightenment. > If your original signal was truly band-limited to 100MHz In practice, this means you need to b
106.
by mikepavone 4y ago
Is this assuming you have some analog hardware that's demodulating the signal in front of your ADC? How do you demodulate a signal from a 1GHz carrier with 200 MSPS?
107.
by mikepavone 4y ago
Oh, I was wondering my new phone didn't like some of the music files I was trying to copy over using MTP even though the old one handled them fine. I had assumed the phone manufacturer did something dumb, but apparently it was Google a
108.
by mikepavone 4y ago
I don't think I've ever lived in a house with fossil fuel heat that worked without electricity. Hot water, sure, but not heat. Typically the thermostat itself is at least partly electrical and beyond that you need electricity to p
109.
by mikepavone 4y ago
I've been there recently and can confirm it still draws a healthy crowd.
110.
by mikepavone 4y ago
This is incorrect. While some sound effects in the Sonic games on the MD/Genesis do use the PSG, the ring sound is not one of them. I double checked just now using the oscilloscope view in my emulator. Looks like the ring sound effect
111.
by mikepavone 4y ago
> You're right, sort of the oddest thing about IBM's basic bidirectional mode (which is pretty much equivalent to byte mode in 1284) is that support for it went away only briefly. I sort of wonder about the internal events at I
112.
by mikepavone 4y ago
> Even better, the original IBM PC was capable of a "direction-switching" handshake that allowed the peripheral to use the full 8 bit data bus to return data. This feature was apparently unused and disappeared from subsequent P
113.
by mikepavone 4y ago
ECP and EPP are not really useful for GPIO-style use and even the simpler modes are not really desirable if the adapter is implementing the handshaking in hardware. You really just want to be able to manually control all the bits. The origi
114.
by mikepavone 4y ago
The 68000 lacks that instruction. It was added in the 68020.
115.
by mikepavone 4y ago
> possibly because the early Motorola 68000 processor chips didn't have 32 bit unsigned multiply operations. This doesn't really make sense as an explanation. For both signed and unsigned multiply, the 68000 has a 16x16 -> 3
116.
by mikepavone 4y ago
It's a bit unclear. Between the cartridge port and the A/V connector you should have access to the signals you need to make it work. If I had to guess, the fact that CSYNC reverses direction is kind of awkward for a device that ne
117.
by mikepavone 4y ago
To be precise, the SMS and Gen/MD VDP versions of this feature work slightly differently from the TMS9918A version of it. The CSYNC output pin becomes an input and is used to synchronize video generation, but you need external hardware
118.
by mikepavone 4y ago
As it turns out, the video overlay feature described in the article also survived in the Genesis/Mega Drive VDP which is derived from the SMS one, but drops the TMS9918A modes. This feature was used in the System 18 arcade board which
119.
by mikepavone 4y ago
That's my understanding. Given that the turbine is used in parallel during takeoff/climb and drives the electric motor as a generator during descent (while presumably still driving the prop) there would need to be a mechanical lin
120.
by mikepavone 4y ago
This and most recent articles on the demonstrator are frustratingly light on details. Found some more info on Wikipedia's article on hybrid electric aircraft [0] which cites an Aviation Week article [1] that is unfortunately behind a p

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