Re: Best OS with support for Dual Pentium Pro’s

Posted on Yesterday, 21:51

by

by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Intel486dx33 wrote on Yesterday, 06:02: What OS would you think would run most stable ? And have built in drivers ? You still have to answer the earlier question. What do you want to use it for?

---

Re: munt CPU speed requirements?

Posted on 2020-07-09, 17:22

by

by gdjacobs

in MT-32 General

in MT-32 General

You can't really ignore VSS, but RSS is certainly more important as it's active code and data including those parts of shared libraries that are being used.

---

Re: munt CPU speed requirements?

Posted on 2020-07-09, 14:18

by

by gdjacobs

in MT-32 General

in MT-32 General

sergm wrote on 2020-07-09, 08:02: Hmm, that looks a bit tricky. Only MT32_PCM.ROM itself is about 512K, and CM32L_PCM.ROM is twice as big. I guess RSS is ~8.6Mb here 😀 Bah! Resident set of 8M. Units are 1 kbyte, not 1 byte. With all the libraries linked in with portaudio, we're talking just under …

---

Re: munt CPU speed requirements?

Posted on 2020-07-09, 02:33

by

by gdjacobs

in MT-32 General

in MT-32 General

It varies a bit depending on the architecture. On an Ivy Bridge CPU with speed optimizations, the VSS for mt32d is about 500k. So it's small. Copy code to clipboard 1 gdjacobs 14961 4.5 0.1 442480 8604 pts/0 Sl+ 21:27 0:19 ./mt32d

---

Re: All the truth about FM in ALS100 Plus+ cards (includes facts, tech info and tests)

Posted on 2020-07-08, 16:32

by

by gdjacobs

in Marvin \ Sound

in Marvin \ Sound

This has what appears to be a Motorola LS245 20 Pin chip on board. Is this an OPL clone? https://i.imgur.com/2OqAqc8l.jpg No, that one is the real 74LS245, an 8-bit buffer chip. You can be sure because 8 pins on one side of that chip are directly connected to the ISA data pins. That does not fit …

---

Re: PSU Voltage Concerns

Posted on 2020-07-07, 21:58

by

by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Regarding the air flow, because I've not used the PSU yet, I cannot comment on it. Because there are a lot of components in there in addition to the inverted ones, it does seem a little cramped. How can I monitor this throughout its usage? Periodic temperature checks? It has dual 80mm fans and due …

---

Re: I recently found this hardware, AKA the Dumpster find thread.

Posted on 2020-07-07, 17:50

by

by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

appiah4 wrote on 2020-07-06, 06:40: Selling 6x86 PR200s as Pentium 200s appears to have been commonplace in the day.. Scummy at the time, but it does give us more variety at the curbside these days.

---

Re: ESS Audiodrive ES1868F and MIDI

Posted on 2020-07-06, 02:58

by

by gdjacobs

in Marvin \ Sound

in Marvin \ Sound

The ESS might be better on 220/7/1 due to ADPCM support. Helpful if you play DN2, Major Stryker, and Monster Bash, although in all honesty they might support alternate I/O addresses.

---

Re: 4 Sound Card DOS System

Posted on 2020-07-05, 18:14

by

by gdjacobs

in Marvin \ Sound

in Marvin \ Sound

The DB50XG is a nice option to have. Given a choice I wouldn't trust any of the Creative cards for an MPU host. Seems like the only alternative is the Turtle Beach Pinnacle, which may not be practical in such a multi-standard setup. My favorite (but German) source about soundblaster revisions …

---

Re: Can you remove the built-in switch on an AT PSU?

Posted on 2020-07-05, 06:35

by

by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

@Mattyice1994, I understamd what you're trying to do but unless I'm mistaken the small white box isn't what you think it is but is in fact ferrite (core) choke like this one I removed from an AcBel PSU from an IBM server. PSU Ferrite Choke.jpg Looks like it to me, as well. The existing switch seems …

---

Re: What are you eating/drinking? (the vogons food thread)

Posted on 2020-07-05, 04:03

by

by gdjacobs

in Milliways

in Milliways

Invited the family over to my place for a Canada day pancake brekky! w00t w00t! I love pancakes. I can enjoy it with anything over it, from a simple butter, to jam and why not peanut butter... yummy. I ate these things (the toppings, not the pancakes) with waffles some weeks ago. Do you do them …

---

Re: Emulating MT-32 on an RPi2

Posted on 2020-07-05, 03:00

by

by gdjacobs

in MT-32 General

in MT-32 General

Noice!

---

Re: ISA soundcard won’t work on midi irq2/9

Posted on 2020-07-04, 20:42

by

by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

jakethompson1 wrote on 2020-07-04, 04:55: He's talking VLB so pretty confident to say there is no ACPI 😁 True dat. Didn't notice he's rocking a 486. 🙁 If it's just the PIC reserving the IRQ, you should be okay.

---

Re: Roland MT-32

Posted on 2020-07-03, 20:25

by

by gdjacobs

in MT-32 General

in MT-32 General

Old hardware is always fun, although I'm not aware of a significant technical reason to prefer it. In general, Munt is now extremely accurate, although the legality of the ROM files is a grey area. You can check with sergm if you have questions about specific hardware versions, their bugs or quirks, …

---

Re: ISA soundcard won’t work on midi irq2/9

Posted on 2020-07-03, 00:42

by

by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

IRQ 2/9 is used by ACPI. Can you disable it and go with APM or no power management at all?

---

Re: PSU Voltage Concerns

Posted on 2020-07-03, 00:41

by

by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That Jeantech is using Teapo capacitors. They're second tier but probably fine in this application (assuming there's a good path for air past that toroidal choke). Other than not going with Jap caps, it doesn't look like they skimped much component wise. The board looks fully populated and …

---

Re: Possibly crazy idea : using a Raspberry with Jack and something like JackMix to have "create" a software S/PDIF mixe

Posted on 2020-07-03, 00:01

by

by gdjacobs

in Marvin \ Sound

in Marvin \ Sound

Pretty sure that's what the ones on Aliexpress are using. Likely your best bet, although I haven't messed with SPDIF input to know how solid that is with those parts. I've got one on hand, so it's maybe something to do tonight...

---

Re: Possibly crazy idea : using a Raspberry with Jack and something like JackMix to have "create" a software S/PDIF mixe

Posted on 2020-07-02, 19:11

by

by gdjacobs

in Marvin \ Sound

in Marvin \ Sound

My goal is 3 or 4 inputs . That seems within reach of even USB 1.1, in theory . Assuming you're not restricting sampling rate or bit depth, you'll need 196608 /s sample rate * 24 b sample bit depth * 2 channels per I2S port for a grand total of 9437184 b/s per I2S port. Looking at Aliexpress, it …

---

Re: Bought these (retro) hardware today

Posted on 2020-07-01, 23:26

by

by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Just won this Asus P2B-DS auction with a Make Offer deal for $119. (including RAM and CPU's) Now I can build my dually tually with two Upgradeware Slot-T slocket adapters. Going to load the beta BIOS, do the multiplier and voltage mods, then it should be good to go. I only have to modify one of my …

---

Re: virus on vogondrivers

Posted on 2020-07-01, 23:10

by

by gdjacobs

in Marvin \ Software

in Marvin \ Software

Tetrium wrote on 2020-06-26, 10:16: And wouldn't wanting to moan a lot actually be a good reason to come here and moan? 😜 Depends what's causing the moan. Some things just aren't good for general display.

---