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Re: Questions about a CMS-401 MIDI card

Posted on 2021-10-02, 11:50

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've got one of these cards on the way... One of the few MPU-401 clones I didn't already have. I'll post the pinout once it arrives Has been a while... Did the card arrive? Is it working? Heh.. it did arrive. Forgot about the thread. You still need the pinout? Yes, the pinout would be highly …

Re: Restoring/upgrading Amstrad MEGA PC 386SX - help

Posted on 2020-11-06, 12:01

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, did you get the MegaPC up and running? What Monitor are you using? I recently bought a MegaPC on eBay. The battery corroded a relatively big area. The PC boots to DOS though but it is not able to detect the HDD. It always shows "Controller error". Unfortunately, the board seems to be multi layer …

Re: Roland MPU-IMC Clone - MPU 401 MCA Card - A successful experiment

Posted on 2020-10-25, 09:54

in Marvin \ Sound

in Marvin \ Sound

I checked the original schematics from Roland and found an error in it that transferred to the clone card. After fixing this the Computer was able to detect the MPU-401 and DOS games claimed to be playing music. However, no data was detected by the midi device. So I took apart the breakout box I …

Roland MPU-IMC Clone - MPU 401 MCA Card - A successful experiment

Posted on 2020-10-18, 20:22

in Marvin \ Sound

in Marvin \ Sound

Since ages I am trying to get hold of a Roland MPU-IMC card for one of my IBM PS/2 systems. I collected several other Roland and clone cards over the years but had no luck with the MCA card. Then I stumbled across the MPU-IMC Clone github project https://github.com/schlae/mpu-imc. Though there is a …

Re: Questions about a CMS-401 MIDI card

Posted on 2020-10-18, 19:39

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I also have a board that has no cable and it also doesn't get detected. Any chance to get the pinout of the cable? I've got one of these cards on the way... One of the few MPU-401 clones I didn't already have. I'll post the pinout once it arrives Has been a while... Did the card arrive? Is it …

Re: Questions about a CMS-401 MIDI card

Posted on 2020-06-24, 19:59

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I also have a board that has no cable and it also doesn't get detected. Any chance to get the pinout of the cable?

Who knows anything about intelligent MIDI cards CMS-401 and-CMS 402

Posted on 2019-12-10, 19:56

in Marvin \ Sound

in Marvin \ Sound

Luckily, I could buy two midi interface cards at eBay. One is a CMS-401 and there is some info about this card around. However, it came without the cable. So I am looking for the pinout of the card to craft one. The CMS-402 also seems to be some kind of midi interface (dual?). But I can't find any …

Re: My AST premium 286

Posted on 2019-05-17, 06:57

in Marvin \ System Specs

in Marvin \ System Specs

Hi PgrAm, nice PC. I am currently working on restoring an AST Premium/286. Unfortunately, the Mainboard does not work. It doesn't even beep when turning on the PC. A possible problem could be a defect in the BIOS ROM chips. Would it be possible for you to share dumps of the two ROMs? Thank you in …

IBM PC AT 5170 Base Memory Issues

Posted on 2019-02-19, 15:45

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, recently, I was lucky to buy a 5170 case through eBay. Actually, I planned to improve a rusty 5170 that I already own. However, what I got was not only the case which looks quite nice, but also a 256/512k system board (Type 1) which appeared to be in a good condition. Unfortunately, it turned …

Re: Roland MPU-401 working partially only - what could be the reason?

Posted on 2018-07-06, 09:09

in Marvin \ Sound

in Marvin \ Sound

Hi Jo, thanks for your feedback. The issue must be on the external MPU-401 device. The board and components of it look nice but I'm now gonna change the caps and if this doesn't help each IC available one by one.

Roland MPU-401 working partially only - what could be the reason?

Posted on 2018-07-01, 17:41

in Marvin \ Sound

in Marvin \ Sound

Hi, I recently got myself another MPU-401 which I connect to my Epson PC AX3 (Equity 386/20) via Lotech MIF-IPC-B Rev.2. The MPU-401 feeds an MT-32 old. With the external unit, that I already owned before, everything mentioned below is working perfectly fine. The new unit works with Larry Suite …

Re: HardMPU, anyone?

Posted on 2018-05-05, 09:21

in Marvin \ Sound

in Marvin \ Sound

Thank you so much for your help. There was someone from GB who sold the Keystone brackets on eBay. Actually, I got a Dremel for Christmas. However, I prefer not to mess around with metal works. ;) Regarding the MIF-IPC-B, the bracket is probably the most expensive part and it is a shame to strip it …

Re: HardMPU, anyone?

Posted on 2018-05-04, 14:05

in Marvin \ Sound

in Marvin \ Sound

So, I tried several different DB9-Brackets with the card - none fit so far. 😢 Any hint where to find a bracket that fits?

Re: HardMPU, anyone?

Posted on 2018-04-29, 20:03

in Marvin \ Sound

in Marvin \ Sound

As soon as it's done correctly, it works! Thanks so much!!! If somebody else uses MiniPro too, here are the settings: Filename ATMEGA_fuse_bits.png File size 528.02 KiB Views 2146 views

Re: HardMPU, anyone?

Posted on 2018-04-29, 19:22

in Marvin \ Sound

in Marvin \ Sound

Thanks for your prompt feedback. I just programmed the hex-file using my minipro. I guess that means I programmed nothing for the fuses.

HardMPU was fun to assemble but doesn't work :( yet!

Posted on 2018-04-29, 17:24

in Marvin \ Sound

in Marvin \ Sound

Hi, Ab0tj was so kind to send me some HardMPU boards. Happily, I assembled the first one. Unfortunately, the board doesn't work. :depressed: I have a PC with a MIF-IPC and orignal Roland MPU-401 + MT-32 running and everything works in this combination. I replaced the MIF-IPC / MPU-401 with the …

Re: Do Pentium II Heatsinks need Thermal Compound?

Posted on 2018-04-11, 07:11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I never saw thermal conpount being used on slot 1.

Re: 3D Blaster VLB has appeared on eBay.

Posted on 2018-04-11, 07:09

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

creepingnet is right. Personally, I started collecting vintage computers because I love them but also because it looked like a cheap hobby to me. However, as time went on, the demand for items like real MPU-401, SoundBlaster MC, Gravis Utrasound, original IBM PCs, etc... grew and I found myself …

Re: Is it safe to attach an old IDE HDD from 1991 to modern pc?

Posted on 2018-04-11, 06:58

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If you find a "modern PC" that has IDE, sure why not?

Re: If you had $5.000 dollars to buy retro hardware, what would you buy?

Posted on 2018-04-11, 06:56

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

An Amiga 4000T, of course.

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