Re: Infovox 500 8-Bit ISA speech synthesizer

Posted on 2023-08-13, 18:11

by

by DerBaum

in Marvin \ Sound

in Marvin \ Sound

Lets talk a little bit about the connectors of the card. 2023-08-11 18.46.25.jpg On my revision of the card the 3.5mm connecors are not soldered to the card itself. They are mounted on the bracket and use wires to connect to the circuit board. On my card the connectors are not soldered to the points …

---

Re: 3dfx Voodoo 4 4500 artifacts help!

Posted on 2023-08-13, 01:15

by

by DerBaum

in Marvin \ Video

in Marvin \ Video

I see 2 parts near the VGA connector (Q1 and Q2) these are N-Channel Mosfets. They are IRF7811A https://datasheetspdf.com/pdf-file/284041/InternationalRectifier/IRF7811A/1 With the card not connected, check if you have shorts from S to D to G ... check all combinations for shorts on both chips. My …

---

Re: 3dfx Voodoo 4 4500 artifacts help!

Posted on 2023-08-12, 14:57

by

by DerBaum

in Marvin \ Video

in Marvin \ Video

1) ...a short of the pcb fan pins (i also saw flash)... 2) ...since they are R00... 3) ... the middle fan pin header is ground... 1) What was shorted? PWR to GND ? Or PWR to SIGNAL? 2) Exactly... they are just bridges without any resistance. 3) Thats right. The middle pin is connected to ground …

---

Re: Packard bell sound card not exist sf2 files

Posted on 2023-08-12, 14:24

by

by DerBaum

in Marvin \ Sound

in Marvin \ Sound

dionb wrote on 2023-08-12, 13:54: Agreed... The thing i am worried about is "Windows 10" ... I didnt know the old cards are still supported. On my modern PC i just use VLC Media player with a plugin if i just want to listen to old formats. The emulation of the sound formats ( Tracker, FM , SID, …

---

Re: CRT experience

Posted on 2023-08-12, 13:59

by

by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Some years ago i really wanted the experience back to play my old playstations on real CRTs. So i got myself 3 SONY TVs (a 4:3 and a 16:9 in the picture and another one of the same 16:9 with a HIFI rack thats at a different location). I think i played 4 games and put all the TVs right back into …

---

Re: Packard bell sound card not exist sf2 files

Posted on 2023-08-12, 13:35

by

by DerBaum

in Marvin \ Sound

in Marvin \ Sound

Packard Bell didn't make their own sound cards. Most mid-1990s cards were Aztech 3rd gen or 4th gen cards, which didn't have wavetable hardware... Nearly all Aztech soundcards have wavetable headers ... except of the ones that already have wavetable and the super reduced wedge shaped ones from gen4 …

---

Re: Cheap ESS 1868 ISA sound cards, new in box

Posted on 2023-08-12, 01:39

by

by DerBaum

in Marvin \ Sound

in Marvin \ Sound

Ensign Nemo wrote on 2023-08-12, 01:13: I'd be interested in hearing how it sounds. probably like this : https://www.youtube.com/watch?v=uhUm1vny0vU ESFM is quite a ok emulation of a OPL.

---

Re: Quake 2 Remastered has been released!

Posted on 2023-08-12, 00:08

by

by DerBaum

in Milliways

in Milliways

The game is also included in the Microsoft GamePass.. I just tried it out and it looks and feels really good.

---

Re: DIY 10ns/12ns PDIP 28/32 SRAM async caches

Posted on 2023-08-11, 18:06

by

by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Here is an idea to further reduce the complexity. You could work with a slot where you slot in the second circuit board and eliminate half of the pins needed and reduce the solder joints by 30 percent... You directly solder Board to board. I have seen this type of construction inside several cheap …

---

Re: What's this mouse adapter

Posted on 2023-08-11, 17:35

by

by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

... It was perhaps a rather silly 'experiment'. The German forum mentions amstrad pc but I could not infer much. I think i found the part you are referring to ... They say that the Amstrad PC has a different pinout. The 2 power jacks are ment for the Amstrad CPC where power comes from the monitor …

---

Re: Yamaha OPL3-SAx - Adlib not working?

Posted on 2023-08-11, 17:25

by

by DerBaum

in Marvin \ Sound

in Marvin \ Sound

E70B1CC5-CFD6-4294-A9BC-472FC82FED42.jpeg Here’s the main BIOS setup menu. Display extending controls scaling automatically to 800x600. I think the third option from the bottom is the thing Tiido is talking about... (Display Expansion Mode) I could be wrong but thats sounds pretty similar to " …

---

Re: Infovox 500 8-Bit ISA speech synthesizer

Posted on 2023-08-11, 17:11

by

by DerBaum

in Marvin \ Sound

in Marvin \ Sound

Here is a dump of the 2 EEPROM chips U18 and U19. Infovox500__v371_GE23_U18+U19.zip The ZIP also contains this reference image: VOXTALK500_ROMS.jpg Its a "HI - LOW" situation where each rom has either the even or odd bytes. Half the roms are empty... Probably because there is RAM in parallel to the …

---

Re: What's this mouse adapter

Posted on 2023-08-11, 15:21

by

by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Found this... http://blog.c128.net/archives/402 and this: https://www.forum64.de/index.php?thread/33239-seltsamer-mausadapter-oder-wie-oder-was/ It seems to be a "Joystick Mouse"... Its german but a translator should work. If you need something specific translated from german to english, just ask me …

---

Re: Hardware storage

Posted on 2023-08-11, 13:29

by

by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Some time ago i noticed that my local supermarket always gets vegetables in the same super sturdy and stackable boxes. There are even different sizes... I asked if could get some of them from time to time, and they were glad somebody wanted the trash... Now if i need new boxes i just go there and …

---

Re: Help locating a motherboard component

Posted on 2023-08-10, 22:22

by

by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Challange accepted... Screenshot 2023-08-11 001706.png " Add a cap(1000mfd-10v) at empty location ELC28 next to dimm slot #3, and remove very small surface mounted cap C130. Flash to bios version 2BA7 and you will be able to use up to a 2600/266 tbred "B"chip. NOTE: with bios version 2BA7, you MUST …

---

Re: What do you do with hardware that you don't need (cases, monitors, drives, etc.)

Posted on 2023-08-10, 21:44

by

by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

... I asked one of them why all of a sudden he decided to do it: "I've scratched my nostalgia itch already, and I've realized I've spent way more time fixing, problem solving and tinkering rather than enjoying this stuff. It's no longer a source of pleasure in general, so I think it ran its course …

---

Re: Removing one cpu from GA-6BXD motherboard.

Posted on 2023-08-10, 19:58

by

by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Do you use the system so much that the power consumption of a second CPU is a concern? A dual slot 1 System isnt that common and a nice to have... i would leave it as it is.

---

Re: What do you do with hardware that you don't need (cases, monitors, drives, etc.)

Posted on 2023-08-10, 19:41

by

by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes. Filename 2023-08-10 21.39.43.jpg File size 1.9 MiB Views 1196 views But i have to admit... I dont care 😁 ... Too much parts? Get more space 😁

---

Re: Infovox 500 8-Bit ISA speech synthesizer

Posted on 2023-08-09, 21:19

by

by DerBaum

in Marvin \ Sound

in Marvin \ Sound

What a cool piece of kit. Nice work diving in to get it going. It doesn't look like the company offers legacy downloads of their software. In my non-legal opinion it really should be preserved. Personally I would archive it as a separate package to the drivers. I have to find out how to get the …

---

Re: Infovox 500 8-Bit ISA speech synthesizer

Posted on 2023-08-09, 20:01

by

by DerBaum

in Marvin \ Sound

in Marvin \ Sound

Thoughts... I had planned to post the software and drivers but i figured out the company behind OpenBook (Software used on this system) still exists and is still lselling this software... https://www.freedomscientific.com/products/software/openbook/ Even the software version i want to preserve is …

---