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Re: PicoGUS: Gravis Ultrasound emulator on an ISA card with Raspberry Pi Pico

Posted on 2023-01-19, 03:31

in Marvin \ Sound

in Marvin \ Sound

By the way.. IMG_20230119_001508_1600x1200.jpg It is not as neat as what @Shreddoc made, but in my defense it was my first SMT soldering attempt and I caused no bridges. Well it proves the rule that "what looks good, might not BE good" ... because my first attempt got the dreaded no PicoGUS …

Re: PicoGUS: Gravis Ultrasound emulator on an ISA card with Raspberry Pi Pico

Posted on 2023-01-17, 10:23

in Marvin \ Sound

in Marvin \ Sound

So, yeah.. PicoGUS SOIC TSSOP.jpg @polpo I also asked this on twitter but, CSV BOM has SN74CB3T3245PW for U2 (which I soldered) whereas your interactive BOM and your card photo has 74LVC244 instead.. Did I do wrong? I also noticed the slight confusion while building. Ultimately I found this message …

Re: PicoGUS: Gravis Ultrasound emulator on an ISA card with Raspberry Pi Pico

Posted on 2023-01-16, 06:21

in Marvin \ Sound

in Marvin \ Sound

More bits arrived here today. Enough to build most of the project. ( Reminder to new entrants, that the project is still in beta. ) So I started making a test card. pgusbld_1.jpg f0037168.jpg f0057272.jpg f0111448.jpg Mostly done. It's my first time fully populating such a board, and doing this much …

Re: What game are you playing now?

Posted on 2023-01-15, 01:19

in Milliways

in Milliways

I played Portal yesterday for the first time. My own self fulfilment of that classic xkcd comic , except that we can change it's "Early 2013" to "Early 2023 ". Thus, I am a decade later, than a meme about lateness. Yay for that. Anyway, it's obviously slightly redundant at this stage to say 'good …

Re: PicoGUS: Gravis Ultrasound emulator on an ISA card with Raspberry Pi Pico

Posted on 2023-01-14, 09:42

in Marvin \ Sound

in Marvin \ Sound

I made my sample cache a bit smarter and now I no longer run out of time during GUS sample mixing (it's IO bound with access to the PSRAM rather than with raw CPU time). Doom now runs basically perfectly. There are some slight pops in the streamed audio but that's probably down to my sample cache …

Re: PicoGUS: Gravis Ultrasound emulator on an ISA card with Raspberry Pi Pico

Posted on 2023-01-12, 12:22

in Marvin \ Sound

in Marvin \ Sound

I wanted to give a quick update. I've paused work on GUS DMA a bit – While traveling for the end of year holidays I put effort in to getting asynchronous writes from ISA DMA to the PSRAM working. Since returning and testing it, while the PSRAM writing does work, it's not helping much with …

Re: Tell me what it's like to own a GUS

Posted on 2023-01-09, 20:56

in Milliways

in Milliways

I have splashed out a few MIDI devices as it's commonly used but seems like I'll be stuck with Creative and its clones forever for sound The PicoGUS project is getting closer and closer to reality. The current, early version will already play a lot of stuff. When completed it will be an emulated, …

Re: What game are you playing now?

Posted on 2023-01-08, 00:09

in Milliways

in Milliways

Speaking (earlier) of non-RPGs... I had about a week of fun with single-player Diablo 2 Resurrected , having finally bought it during the Christmas 67%-off sale, and I feel I got my money's worth (no more, no less). The nostalgia was cool, the updated graphics were nice. But ultimately, the repeated …

Re: What game are you playing now?

Posted on 2023-01-06, 23:33

in Milliways

in Milliways

I think that, as with many of life's debates, the different approaches to gaming reflect that which the individual finds important. In that sense, there can be no "wrong way" to play a game.

Re: MK8330 : new soundcard based on the CMI 8330 chipset

Posted on 2022-12-31, 20:58

in Marvin \ Sound

in Marvin \ Sound

Demo scene and other cutting-edge-of-it's-time DOS audio content uses niche routines and techniques and workarounds, for which a great jack-of-most-trades card like the MK8330 is not the ideal choice. Such niche content needs a more deliberate and researched sound card choice, to cover those …

Re: SSC1 - SC-55 - MT32 - LAPC-I - what are the practical differences between these?

Posted on 2022-12-31, 04:04

in Marvin \ Sound

in Marvin \ Sound

Ok, i will take an SCC-1. Can you help me to set this card? i really never seen one They command a huge price premium, due to being very rare. And they don't actually sound any better (or even much different at all) than a standard $200-buynow Sound Canvas external unit, or a 85 Euro X2GS which …

Re: MK8330 : new soundcard based on the CMI 8330 chipset

Posted on 2022-12-31, 00:10

in Marvin \ Sound

in Marvin \ Sound

Demo scene and other cutting-edge-of-it's-time DOS audio content uses niche routines and techniques and workarounds, for which a great jack-of-most-trades card like the MK8330 is not the ideal choice. Such niche content needs a more deliberate and researched sound card choice, to cover those …

Re: PicoGUS: Gravis Ultrasound emulator on an ISA card with Raspberry Pi Pico

Posted on 2022-12-30, 21:45

in Marvin \ Sound

in Marvin \ Sound

Aliexpress links, hopefully these are ok : PSRAM, APS6404L-3SQR-SN https://www.aliexpress.com/item/1005003308679029.html SN74CB3T3257 https://www.aliexpress.com/item/1005004921069864.html People in North America or Europe will generally source these from Mouser et al. But for others, e.g. in Asia/ …

Re: PicoGUS: Gravis Ultrasound emulator on an ISA card with Raspberry Pi Pico

Posted on 2022-12-30, 10:51

in Marvin \ Sound

in Marvin \ Sound

It can be found on Aliexpress. I actually just ordered the parts a few days ago and ended up getting the PSRAM from mouser also. Interestingly the BoM also lists this part in the digikey column: 870-ISS1M8BLL-104NLI Seems to be an 8Mbit instead of 64Mbit, but it's also out-of-stock at Digikey, but …

Re: PicoGUS: Gravis Ultrasound emulator on an ISA card with Raspberry Pi Pico

Posted on 2022-12-30, 09:18

in Marvin \ Sound

in Marvin \ Sound

Has anyone found a suitable PSRAM chip anywhere other than Mouser? (I mean currently in stock, available to purchase in small quantities.) If not, then it looks like my choice of component store is already decided. 😀

Re: What game are you playing now?

Posted on 2022-12-25, 04:57

in Milliways

in Milliways

Battle net's current 67% discount on Diablo II:Resurrected + Diablo III finally made it worth getting, for me. Both games for about $20, until early January I think. Or D2R alone for about $15. Primarily purchased so I can relive my 2000's single player Diablo II fun, in a new polished way. And …

Re: UNISOUND - Universal ISA PnP Sound Card Driver for DOS v0.80a

Posted on 2022-12-21, 21:37

in Marvin \ Sound

in Marvin \ Sound

Nice update! many thanks for your valued work.

Re: Retro confessions. What are yours?

Posted on 2022-12-21, 21:27

in Milliways

in Milliways

I got HL2 free with an ATI graphics card, it was a popular voucher scheme at the time. A 9600XT or something something, iirc. Played about quarter of the game, then just petered out and didn't continue. I found it good, but not can't-put-it-down good. I then proceeded to not use Steam for several …

Re: Retro confessions. What are yours?

Posted on 2022-12-18, 22:12

in Milliways

in Milliways

Guitar distortion produces tons of sustain with varying complex harmonics in the waveform, which is far from trivial to simulate. And common playing techniques (palm muting, fifths/power chords, 'pinch' harmonics) modulate that even further. Wavetable or FM synths are just not equipped for the job. …

Re: Retro confessions. What are yours?

Posted on 2022-12-18, 21:15

in Milliways

in Milliways

All the common gaming synth solutions suck, for any kind of crunchy or distorted rhythm guitar in the lower registers.

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