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🎵Ko-Fi 🎶
🎵Ko-Fi を募集します🎶
🎹🎹🎹🎹🎹🎹🎹🎹🎹🎹🎹🎹🎹🎹🎹🎹🎹🎹🎹🎹🎹🎹🎹🎹

Doing only format (still need to learn other chip formats like FC/​NES, SFC/​SNES, etc./など/usw.). Options available for PCM drums &/or vocals (at extra fees).
If opting for budget, please make sure you own the rights to your MIDI source (or authorized by its author to use it).

ko-fi.com/silsinn9801/commissi

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Tú y yo a la fiesta
Tú y yo toda la noche
Tú y yo a la fiesta
Tú y yo oh oh oh oh oh

🔊🎵 #OPL3MIDI

Since I was in the right frame of mind to do it, I finished removing and dumping the ROMs from another piece of avionics I had laying around - an AlliedSignal Mk VII Warning Computer 965-0876-040.

These were used with a NEC uPD7759 speech chip in master mode, so it took some work to get usable audio out of them... ended up writing a custom ADPCM decoder based on the MAME sources.

Raw dumps and decoded audio are also attached. There is 3mbit worth of data but the speech chip can only address 1mbit at a time, so the host CPU is bank switching what the chip can see. As a result the audio is split into three different banks.

Also here is a dump of a GPWS I tore down a year or two ago. This one was easy, 8khz ulaw with a header. Interesting CPU-less architecture in this one, it's run by three FPGAs which I am guessing replaced a bunch of discrete logic in prior models.

Still have another GPWS I need to liberate the ROMs from as well... Once again, a ton of layers and very thick conformal coating, but also no easy way to get at the bus, so the chips will have to come out.

I'm calling the voice data a preliminary dump because I don't entirely understand the encoding here yet. It's not straight PCM, and it's also not any common compressed audio formats (tried various A/DPCM algorithms, CVSD, u-law, etc)... I've gotten the best results so far by treating everything like signed 4-bit PCM and doing a little massaging of the values. But the waveform shows some inversions on peaks (and it's generally very crunchy and noisy) which leads me to think there's more to the story here. This dates to the late 1970s so it can't be anything too fancy.

It would be possible to look at the code to see what it's doing, but only one of the program ROMs is socketed so that's the only one I've dumped so far. And the CPU is a CDP1802 COSMAC which is an architecture I've never worked with before...

Dumped ROMs attached if anyone wants to take a look
👀

Preliminary dump of the voice data from a McDonnell-Douglas H05A0035-10 Central Aural Warning System. I believe first flown on the DC-9.

Voice data was stored on three 256Kx8 EPROMs. I traced out a schematic of the voice board and dumped them in-circuit, so there was no need to try and desolder the chips from the heavily conformal coated multilayer board.

This week, Cybertip reports #99651454, #100111876, #100120513, & #100122414 have been filed to NCMEC’s CyberTipline report.cybertip.org against various @pixiv users who posted comments containing illegal CSEM/CP links on artworks by one same artist.
CC: @pixiv_en

And because I am not as reckless as @snow, I will not divulge the name or Pixiv user ID of the artist (who also happens to have an empty Pawoo account) who refuses to take down such comments even after being notified of them.

@snow
Why is this @follow-bot account following loli artists from Pawoo, like for example niwa2eito8, kmo55n, exenrar, YuukiSasahara, alke, & yonekinji? Weren’t you strictly anti-loli? What the fuck happened?

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