Re: 3 (+3 more) retro battle stations

Posted on 2020-11-27, 01:55

by

by feipoa

in Marvin \ System Specs

in Marvin \ System Specs

My wife has this hard rule of thumb that postulates: "If we bring one thing at home, another one has to go. We cannot be an old house." ... and she consistently purges the inventory. I would get along with her then as I have the same rule. My wife is always buying stuff without the forethought of …

---

Re: S3 ViRGE VLB project (or " Making a Concurrent for Creative 3D Blaster VLB" )

Posted on 2020-11-25, 00:54

by

by feipoa

in Marvin \ Video

in Marvin \ Video

Thank you. In Doom, you've showed that the Trio64V+ is 7% faster than the Trio64 and that the Trio64V+ is 5% faster than the custom 968VL, but how much faster is the 968VL compared to the Trio64? Is it correct to infer that the custom 968VL is 2% faster than the mass produced Trio64?

---

Re: S3 ViRGE VLB project (or " Making a Concurrent for Creative 3D Blaster VLB" )

Posted on 2020-11-23, 21:35

by

by feipoa

in Marvin \ Video

in Marvin \ Video

Madao, thank you for the those benchmarks. That DOOM benchmark differences between the Trio64 and 64V+ are fairly impressive. Of course, everyone is still hoping for a ViRGE, even if limited to 2 MB. You made a comment that your custom 968VL graphics card is as fast as a Trio64 VLB ("very very minor …

---

Re: S3 ViRGE VLB project (or " Making a Concurrent for Creative 3D Blaster VLB" )

Posted on 2020-11-23, 11:46

by

by feipoa

in Marvin \ Video

in Marvin \ Video

Trio64V+ is damn fast, faster than Trio64 VLB. Of coruse, i use PCI Card-ROM from a trio64V+ with 45ns EDO RAM. Are you able to benchmark the Trio64 VLB alongside the Trio64V+ VLB, e.g. with pcpbench, 3dbench, & Doom, to quantify how much faster it is? Is the Trio64V+ running in Trio64 …

---

Re: Market value for popular or rare classic computer hardware

Posted on 2020-11-23, 04:07

by

by feipoa

in Milliways

in Milliways

Here's a listing I was watching. It is an IODATA branded IBM BL3 75 MHz upgrade adapter for Japanese PC-98 systems. I have two of these and one will run at 110 MHz, but on the boards tested, needs to have the L1 flush the cache with every I/O. This one sold for $461 USD. They are not worth that kind …

---

Re: Modifying the POD83's voltage regulator for overclocking

Posted on 2020-11-22, 23:37

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Glad to hear it is working out for you. I've done this mode with the double diodes without removing the heatsink, but requires more delicacy. Very few motherboards work properly with the POD in WB mode, but they do exist however rare.

---

Re: Modifying the POD83's voltage regulator for overclocking

Posted on 2020-11-22, 14:47

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yea should be OK. I've done this mode with two parallel 3 A diodes as well. If the previous poster scared you, you can always use 3 or 4 in parallel to split up the current. I have had no issue with my single 6A diode though.

---

Re: Modifying the POD83's voltage regulator for overclocking

Posted on 2020-11-21, 23:25

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, perhaps if it fits nicely. I just went with whatever I had on hand at the time which could handle the high continuous current.

---

Re: PS2TOSERIAL : Connecting a PS/2 mouse to the serial port

Posted on 2020-11-21, 14:31

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Looks like your memory is better than mine. Thanks for providing this clarity. I'd also like to know if there have been any progress on this front.

---

Re: PS2TOSERIAL : Connecting a PS/2 mouse to the serial port

Posted on 2020-11-21, 05:57

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I don't recall 9600 baud working with any generic or branded Logitech Win9x/NT driver when I did my tests. If there has been some positive progress in this regard, I'd be interested.

---

Re: PS2TOSERIAL : Connecting a PS/2 mouse to the serial port

Posted on 2020-11-21, 03:05

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Has the issue with no Windows 95/NT drivers been solved when using 19200 baud mode? If I recall, that was the main hurtle for my use of the product. And 19200 baud was required to eliminate pointer lag when behind several KVM types. I recall there had been attempts to hack some Logitech drivers to …

---

Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2020-11-19, 21:58

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I was able to get a different BL3 upgrade board working at 110 MHz on a different board, but this particular combination required flusing the L1 every I/O and this hurt performance. Well that is reassuring, it means that perhaps there are more of these adapters out there than first thought. There …

---

Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2020-11-19, 07:44

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I am surprised you fried a DLC at 50 MHz. I had no issue with TI 486DLC's at 50 MHz. An IBM BL3 at 100 MHz would be faster than the TI SXL2 at 100 MHz, but the BL3 is limited to 16 MB cacheable memory and it is extremely difficult to find an adapter that will work with a motherboard well. I have …

---

Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2020-11-19, 01:54

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yup, that's it. Where did you find your upgrade? Are you willing to upload a photo of the top of the unit without the CPU installed? The bottom shows a NAND gate. There's also crystal, perhaps for the chip under the CPU? I don't think any of these are absolutely necessary. It is unlikely that I'll …

---

Re: Biostar MB-8433UUD 2.0 Issues

Posted on 2020-11-16, 01:08

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There are more pins on the UM8663BF than just the FDC pins. Ensure each of the UM8663 leads are making electrical contact with the pads.

---

Re: Biostar MB-8433UUD 2.0 Issues

Posted on 2020-11-15, 06:29

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I doubt I have the pinouts for anything UMC. You just follow the trace to where it ends, or at a via, and check for continuity on the other end.

---

Re: Biostar MB-8433UUD 2.0 Issues

Posted on 2020-11-15, 03:59

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You can use quickchip, which is a special type of solder that stays molten long enough for all 4 sides to stay liquid so that the chip can be lifted off. Quickchip is expensive for what you get, so I'd save that for a chip that doesn't have a replacement. For something like this, if you already have …

---

Re: Biostar MB-8433UUD 2.0 Issues

Posted on 2020-11-15, 03:13

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, my FDC works fine on this board after replacing the floppy IC and ensuring the leads are making electrical contact with the solder pads.

---

Re: How to fix your dead on-board floppy controller

Posted on 2020-11-15, 03:11

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hard to say for sure if it was bad contacts or a bad floppy controller IC. Use a multi-meter to make sure all the leads on the floppy controller IC make contact with the solder pad. If not, then reflow it. Once all leads are sure to be making contact, if it still doesn't work, then perhaps swap out …

---

Re: MR-BIOS for C&T PEAK/DM

Posted on 2020-11-15, 03:09

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It's a good thing there's no deadline on any of this.

---