Re: 5:4 LCD screen for retro pc

Posted on 2021-09-09, 17:57

by

by GigAHerZ

in Marvin \ Video

in Marvin \ Video

There are 5:4 LED monitors for the business market, with the resolution topped out at 1280 x 1024. The old 1600 x 1200 monitors can occasionally be found, but many old games don't support that resolution, so you shouldn't go for one of those. I often find piles of the old LCD monitors in the thrift …

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Re: 5:4 LCD screen for retro pc

Posted on 2021-09-09, 12:29

by

by GigAHerZ

in Marvin \ Video

in Marvin \ Video

I would still recommend you to keep your eyes open to find a 1024x768 or 1600x1200 resolution LCD screens. :) They do appear here and there time to time. I keep looking on ebay, do you have any particular model to advice which support 1600x1200? No, not really. I have few features, i would love to …

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Re: 5:4 LCD screen for retro pc

Posted on 2021-09-09, 12:00

by

by GigAHerZ

in Marvin \ Video

in Marvin \ Video

I would still recommend you to keep your eyes open to find a 1024x768 or 1600x1200 resolution LCD screens. 😀 They do appear here and there time to time.

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Re: Why DOS died...

Posted on 2021-09-06, 12:27

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by GigAHerZ

in Milliways

in Milliways

I've been doing some typing/programming in DOS recently. And the reason why it died bacame cristal clear for me - it does not have copy/paste functionality :D Huh, copy paste worked fine in Turbo Pascal 3. Don't you remember your wordstar key bindings? Well, it works in many text editors. But what …

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Re: What is the main bottleneck in dos programming?

Posted on 2021-09-03, 13:21

by

by GigAHerZ

in Marvin \ Software

in Marvin \ Software

Bottleneck depends on what your program does. Every program has its bottlenecks in different places...

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Re: AMI Color BIOS (1993 and earlier) modification in hex editor

Posted on 2021-08-29, 14:49

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Have you compared the list of options you've found with the list of options you could enable through AMISETUP? Any additional features that could be enabled, that AMISETUP can not do? The biggest one so far is that a handful of posters have done a hardware modification to keyboard controllers that …

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Re: AMI Color BIOS (1993 and earlier) modification in hex editor

Posted on 2021-08-28, 08:59

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Have you compared the list of options you've found with the list of options you could enable through AMISETUP? Any additional features that could be enabled, that AMISETUP can not do?

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Re: How about a MR-BIOS ROM file repository?

Posted on 2021-08-27, 08:04

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by GigAHerZ

in Marvin \ Software

in Marvin \ Software

My googleing skills have not been enough... :( It would be absolutely amazing, if someone would have MR BIOS for SIS 85C471 based chipsets. Information from one of the bios packs here, in the thread: (but the bios itself was missing :( ) Filename Port Description SIS 85C471 -------- ------- …

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Re: How about a MR-BIOS ROM file repository?

Posted on 2021-08-26, 12:43

by

by GigAHerZ

in Marvin \ Software

in Marvin \ Software

My googleing skills have not been enough... :( It would be absolutely amazing, if someone would have MR BIOS for SIS 85C471 based chipsets. Information from one of the bios packs here, in the thread: (but the bios itself was missing :( ) Filename Port Description SIS 85C471 -------- ------- …

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Re: File managers for Windows 3.1?

Posted on 2021-08-24, 15:10

by

by GigAHerZ

in Marvin \ Software

in Marvin \ Software

StevOnehundred wrote on 2021-08-24, 12:19: https://en.wikipedia.org/wiki/Calmira It's great to look at, but if always fails after few minutes of usage. Bug-ridden top to bottom... I wish there would be an active community around it and it would be actually usable... 🙁

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Re: File managers for Windows 3.1?

Posted on 2021-08-24, 11:08

by

by GigAHerZ

in Marvin \ Software

in Marvin \ Software

Total Commander is a godsend. (Y)

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Re: Project: Full Can Clock Oscillator Replacement

Posted on 2021-08-23, 19:42

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Variable clock speed version uploaded. All of these are untested thus far. Use at your own risk. I recommend testing on a breadboard with oscilloscope first. Amazing! :o Only thought i have is that could i be able to make it single-sided, maybe? The PCB manufacturers could then 100% fully complete …

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Re: Project: Full Can Clock Oscillator Replacement

Posted on 2021-08-23, 12:17

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hold on.. I thought you meant a PLL chip replacement for motherboards. You mean to make a variable clock generator for a crystal oscillator full can replacement. I'll look into that. Exactly! I mentioned PLL as something that maybe you would need on your new PCB. :) Feel free to run wild with this …

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Re: Project: Full Can Clock Oscillator Replacement

Posted on 2021-08-23, 12:15

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I think you got me wrong. I would still wish to have classic oscillator package with 4 pins. Let's say, i have a 386DX-40 board. It wants an 80MHz clock oscillator in a 4-pin socket. But i would love to have something there, that can do let's say 66-100MHz by just flipping a jumper/switch on the new …

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Re: Project: Full Can Clock Oscillator Replacement

Posted on 2021-08-23, 12:10

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Not really sure how easily that could be implemented. Usually those chips are SOIC mounted. Unless you have an idea of how to accomplish that. Uhm, sorry, i didn't quite get it. How to mount SOIC packages on PCB? Why wouldn't soldering iron work here? Also, just a sidenote, that some PCB …

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Re: Project: Full Can Clock Oscillator Replacement

Posted on 2021-08-23, 12:06

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Not really sure how easily that could be implemented. Usually those chips are SOIC mounted. Unless you have an idea of how to accomplish that. Uhm, sorry, i didn't quite get it. How to mount SOIC packages on PCB? Why wouldn't soldering iron work here? Also, just a sidenote, that some PCB …

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Re: Project: Full Can Clock Oscillator Replacement

Posted on 2021-08-23, 12:02

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have long been thinking about creating something similar, but instead of fixed frequency, i would use some PLL chip and bunch of jumpers to set frequency in a wide range... Maybe you want to take over that idea?

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

Posted on 2021-08-22, 15:48

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It's the kind of ultimate CRT Does it support 15kHz..? ;) "Thankfully" the whole Amiga stuff has been so distant to me that i've not even seen one with my own eyes. (As i've understood, with Amigas it becomes a topic...) So in that sense, i'm a total PC guy. By specs, it doesn't seem to support …

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

Posted on 2021-08-21, 20:33

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So there was this one guy who wanted to get rid of this thing... Trinitron CRT 1600x1200 @ 75Hz Max vertical refresh 120Hz All of this in a 17" package And the P in the end of the model means that it has 2 VGA inputs. :O It's B-E-A-utiful! It's the kind of ultimate CRT that i hoped to get at one day …

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Re: Does PC100 or PC133 memory make a difference on a 66Mhz bus?

Posted on 2021-08-19, 14:42

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Only, if you can tighten the timings on memory because it runs at lower speed, it does make a difference. But if you just stick it in and don't play with memory timings, it doesn't matter.

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