Re: VGA Capture Thread

Posted on Yesterday, 00:17

by

by maxtherabbit

in Marvin \ Video

in Marvin \ Video

Not sure if this is the right topic to bring this up in, but I am having some trouble outputting 720x400 resolution on my Gefen EXT-VGA-2-DVISP. It keeps outputting it as 640x350 instead of it's intended resolution, I've tried resetting it, switching PCs with different graphics cards and hooked it …

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Re: Help identify this 386DX-49 motherboard ... EISA?

Posted on Yesterday, 00:14

by

by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Grzyb wrote on 2023-05-26, 23:17: Looks like Opti Local Bus, not EISA. this. do NOT put an EISA card in there

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Re: Small CRT monitor for DOS applications/games - this is the way

Posted on 2023-05-26, 00:45

by

by maxtherabbit

in Marvin \ Video

in Marvin \ Video

>small hell nah chief we go big 21" CRT gang

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Re: Best way to max out the RAM on a 16-64K 5150 with a single card?

Posted on 2023-05-26, 00:44

by

by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, I know of projects such as the Lo-Tech 1MB RAM board. But what about solutions involving old cards? I have an AST SixPakPlus, which has 384K currently installed. The documentation says it can go up to 576K, though... how? It's completely populated. Here's what I currently have: Onboard RAM: …

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Re: Market value for popular or rare classic computer hardware

Posted on 2023-05-23, 14:42

by

by maxtherabbit

in Milliways

in Milliways

upgrade CPUs represent the maximum overlap between "things I don't care about" and "overpriced" Heh... I was looking at getting a socket 4 to socket 5 adapter and then was going to use a socket 5 to socket 7 interposer. I've also got a slot-1 to socket 8 adapter and plan on putting a socket 8 …

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Re: Market value for popular or rare classic computer hardware

Posted on 2023-05-23, 14:24

by

by maxtherabbit

in Milliways

in Milliways

upgrade CPUs represent the maximum overlap between "things I don't care about" and "overpriced"

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Re: Modified BIOSes for ASUS P3B-F, P3V4X, P3V133, CUBX, CUBX-E/L and P3C-E

Posted on 2023-05-18, 19:06

by

by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

DenizOezmen wrote on 2023-05-18, 18:28: voscoboss wrote on 2023-05-17, 06:41: Just dropping in to say the BIOS works great on my P3V4X. Thanks for your work! Glad to read, thank you! My slocket8 P3B-F system is also still going strong!

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Re: [Advice needed] Two EISA VGA cards : build a system or sell the cards

Posted on 2023-05-16, 19:07

by

by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

EISA is interesting, but when it comes to video cards it will not give you noticeable advantages vs regular ISA. I have 2 EISA motherboards, one with a proprietary local bus slot (ECS) and one with VLB, so I use those for video instead since the performance is way, way better than ISA/EISA. But for …

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Re: Brandnew handheld 386SX computers and 8088 laptops... from AliExpress?

Posted on 2023-05-15, 14:54

by

by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thermalwrong wrote on 2023-05-15, 12:31: What's a carp battery though? idk how they fit 2500 fish in there that's wild

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Re: What are the best Vga to hdmi scalers or peripherals for MS-DOS games ?

Posted on 2023-05-14, 15:10

by

by maxtherabbit

in Marvin \ Video

in Marvin \ Video

First off, Hello! Long time browser, first time poster, and an old classic geek! After browsing this thread, and others, in search of a reasonably priced way of capturing DOS resolutions over VGA. I think I've settled on the Extron RGB-DVI 300, but have a quick question I hope a user of that device …

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Re: Native PS/2 mouse implementation for 386/486 boards using the keyboard controller

Posted on 2023-05-12, 20:02

by

by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Paar wrote on 2023-05-12, 19:46: Looks promising. What is the height of the inverter IC used in the newer revisions? 1.75mm, the tallest thing is the inductors at 2mm. The revision 3 I posted above moves all SMD components to the bottom. Should in theory allow the shortest stack height possible.

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Re: ps/2 header

Posted on 2023-05-12, 17:50

by

by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The two most common pinouts are here: Re: Native PS/2 mouse implementation for 386/486 boards using the keyboard controller But I see the motherboard in this thread uses a totally different 5pin arrangement.

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Re: Native PS/2 mouse implementation for 386/486 boards using the keyboard controller

Posted on 2023-05-12, 17:43

by

by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If we're talking about boards from 286 to Pentium era, then yes, boards without PS2 port and with a KBC situated next to ISA slots are in minority. Then let's say you're interested only in Socket 3 baords and want to build some nice 486 system. Suddenly boards which fall into those criteria are in …

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Re: Native PS/2 mouse implementation for 386/486 boards using the keyboard controller

Posted on 2023-05-12, 17:34

by

by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

In that case it could be better to place all the components on the bottom of the board to get another mm or so. Will probably need to modify it to be usable with my board. The prospect of getting native PS2 support with 486 is a strong one. I just did a version like that. Passes DRC but hasn't been …

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Re: Dallas DS12887 Replacement help

Posted on 2023-05-12, 13:46

by

by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

https://mou.sr/3LZKJw9

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Re: ISA RAM CARD using 30 pin SIMM ? ON XT Class machines?

Posted on 2023-05-10, 17:47

by

by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I wasn't referring to bus transceivers. More like gating the memory read/write strobes from ever going active on the ISA slots if the onboard memory is serving the access.

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Re: Real mode boot to DOS 6.22 & BIOS INT13h

Posted on 2023-05-10, 17:19

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by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

MS-DOS 7 and onward are LBA-aware

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Re: ISA RAM CARD using 30 pin SIMM ? ON XT Class machines?

Posted on 2023-05-10, 14:01

by

by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Most LIM4 and EEMS boards only allow you to backfill down to 256kb. The purpose of my experiment was to see if the entire 640kb could be backfilled. Perhaps with the right card/motherboard combo it might work? You need to make sure that the motherboard doesn't drive the data bus when accessing the …

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Re: Memtest86 needed for 286 1MB RAM

Posted on 2023-05-08, 15:40

by

by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

memtest86 is 32bit software, no version update will ever let it run on a 286

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Re: Netwoking on a Windows 98 PC - Security concerns

Posted on 2023-05-08, 15:01

by

by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

st31276a wrote on 2023-05-08, 14:05: If your lan is behind a nat router, the stuff on the inside would not be available unless port forwarded on the router. I just run plain insecure smb1 straight because I tust my lan. (And I don’t have modern windows computers 😀 ) 100% this people blow this crap …

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