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PC 486SX (ao486) • QNX 4.25 (Unix-like OS) on ao486

MISTerFPGA about 8 days ago

Hello community,Preliminary notes:QNX is a Unix-like microkernel real-time OS, primarily targeted for embedded devices and which some of you might remember for its amazing 1.44 MB floppy demo from mid '90s sporting a fully bootable OS, GUI, mouse support, …

PC 486SX (ao486) • This is a problem related to Windows 95 installation.(Boot disk image not working)

MISTerFPGA about 2 months ago

Hi!To install Windows 95, I mounted the Windows 95 boot disk image to "Floppy A:" and restarted, but "Booting from floppy..." does not proceed any further. Literally, booting does not proceed.The same thing happens if you replace it with another boot disk …
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Looking for jumper settings for a Magitronic A-B 247 IDE controller I/O card with a winbond chipset

VCFed about 2 months ago

I bought a MAgitronic A-B247 Ide card at a good price to try and get my gateway 2000 486 up and running. I cant seem to find the jumper settings for this card when I search for Magitronic or Winbond, was wondering if someone could help me out. The aucti …

Some questions about the Xi 8088….

VCFed about 2 months ago

Good day ! First, I'm showing off a little: I finally assembled Kh8088, which had been working for a long time, into a case. For some reason, I love 19" cases))) In the photo: Xi8088 by skiselev, CGA Redux by hkzlab, OPL2 and FDC by skiselev, VCF …

Best way to figure out CF geometry

VCFed about 2 months ago

Is there a good utility for modern windows (10 preferably) that can be used with a USB compact flash drive to determine the geometry (sectors, heads and cylinders) of a CF card? I have tried using biosdrvs and ideinfo on my vintage 386 system (using a cf- …

Enta 486SX / Award V3.20-E Laptop won't work with any IDE drive....

VCFed about 2 months ago

Hi Everyone I've been tearing my hair out over this -virtually worthless- 486SX machine. It's a relatively boring laptop but I just wanted to get it working because it has such a lovely keyboard. It was originally cursed with a Conner CP30104H 3 …

Coaxing a Pentium II to use a CF adaptor

VCFed about 2 months ago

I have a Pentium II based PC for nostalgias sake, and I'd like to be able to get files onto it quickly from a more modern machine. After all, if I can pull off this trick with an XT (using a CF to 8bit ISA adaptor), or with a Mac G3 (using a StarTech …

What do you like for benchmarking drive speeds on windows 98?

VCFed about 3 months ago

I've been thinking a lot about storage interfaces recently. My retro 98 PC has both a fast CF to IDE and a SD to IDE just as part of the setup. Today o was going through my parts boxes and found a nice u160 SCSI drive and PCI controller card. I've also got …

Combining HDD LEDs

VCFed about 3 months ago

Just a quick (maybe stupid) question: can I connect the LED leads from, say, a hard drive card or a XT-IDE, to a Miniscribe drive's LED or is there a risk of damage or feedback into each others' circuitry? …

Compaq Portable III: Using multiple drives/storage devices on IDE controller possible?

VCFed about 3 months ago

All right. I have had success in using XT-IDE on the Compaq Portable III, thanks to a patched BIOS ROM from VOGONS: https://www.vogons.org/view... problem I am having now is that I have a dual-plug cable, but it only reads and a …

IBM PC, PCXT, Tandy 1000 • MiSTer PC XT BIOS

MISTerFPGA about 3 months ago

Here's my small contribution to this project:MiSTer PC XT BIOSIt's a fork of well known 8088_bios (https://github.com/skisele... PC XT related enhancements:Memory size set to 704KB. So if A000h UMB enabled, 704KB memory will be available to …

Classic 8X Plain IDE CD-ROM Drives

VCFed about 3 months ago

Where can you find these in new like looking condition - need a pair of white ones for the 2 486 DX2 66's I have. How fast did they get before they went ATA? …

CF->IDE: WPcom and Lzone?

VCFed about 3 months ago

As described here, I got a CF->IDE adapter to put on the GoldStar Prime 2C multi-I/O card that I bought for my 286 recently. I then took the CF card that I've been using with my XT-CF-Lite 4.1 card (on my XT system previously, and - up until now - on m …
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Help with dual-CF->IDE adapter

VCFed about 3 months ago

Hi! I recently bought one of these, to plug onto the IDE connector on my newly bought Goldstar Prime 2C multi I/O card (so that I can use compact flash as hard drive without having to resort to my XT-CF-Lite 4.1 card that I used with my XT): The adapte …

IBM PC, PCXT, Tandy 1000 • XT-IDE r625

MISTerFPGA about 3 months ago

Just received much awaited addons and start looking at MisterXT Looks like it's suggested BIOSes goes with quite old XT-IDE release, so i made a build of main and XT-IDE BIOS.Main BIOS is a quick port of Book8088 (chinese XT laptop) BIOS i'm working on, w …

Calling all Coppermine-128 Celeron 600 owners...

VCFed about 3 months ago

Hello guys, I'm going to start using a Celeron 600MHz (66MHz FSB) CPU in a Toshiba laptop that takes desktop Socket 370 CPUs. The system will have 256MB of ram and a 32GB SD card inside an IDE adapter for the Windows 98se OS. I am downgrading the 1GHz PI …

NuXT 1.2, move 32K VGA ROM to either main flash chip or option ROM socket?

VCFed about 3 months ago

If I needed to clear up C0000-C8000 (location of SVGA bios on a NuXT 1.2) might it work to just move the chip over to the option ROM socket (and set it to D0000)? How about flashing it into the 32k free space in the flash chip used for the system BIOS (loc …

XT-IDE AT/x86 version: Unable to configure ports and addresses?

VCFed about 3 months ago

Since I have my Compaq Portable III in easy working order again, I want to try using XT-IDE as a pair of option EPROMS (note the missing "E") in the extra chip sockets provided on its motherboard. (That is, if it has the capability to do so.) Th …

Symphony IDE controller??

VCFed about 3 months ago

Hi! I'm a newbie here, just getting into retro PC builds. I recently acquired a Gateway 2000 486DX4/100 machine. It has a WD Caviar 2340 Intelligent AT drive, a NEC CD-260 CD-ROM drive, and this odd little IDE controller by Symphony (photo of an identic …

Advice on restoring a Dual G4

VCFed about 3 months ago

Hi all, I have hear a dual 450mhz PowerMac G4 with 2gb of RAM. At present it runs OSX 10.4.11. I upgraded the graphics card awhile back to a GeForce 4 MX. Over the 20 years I've had this thing I've managed to boot it up often enough that the 120gb IDE har …
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Win98 Extended Memory

VCFed about 3 months ago

So I was put on a data recovery mission recently where I needed to pull the data off an IDE drive. Remarkably simple, I happened to have an old Intel Atom motherboard with an IDE connector on it and Win98 booted right up! Or it almost did. First I was …
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Need help—IBM 5162 can't boot from the XT-CF card!

VCFed about 3 months ago

My IBM 5162 has a damaged hard drive. Every time, I had to use a floppy to boot it. I recently bought a MINI XT-CF card. However, my IBM 5162 can't boot from it. Using DOS 3.3, I fdisk the CF card and erase all partitions on my Compaq Prolinea 4/50 (whi …

IBM PS/2 Units for Sale: Model 50 and Model 77

VCFed about 3 months ago

Hi all -- I've restored two machines that I'd like to move on to a good home. These are both fully working. Model 50: Original 1987 (not the 50Z). With 80287 coprocessor. 1.44MB Floppy. 1MB on board plus 2MB in IBM 286 Memory Expansion Adapter. McIDE MCA …

LPT to IDE interface

VCFed about 4 months ago

I just ran into this thread, mentioning a backpack hard drive. I know about external CD drives that can be connected to the LPT port but never heard of ones with HDDs. A quick search let me to a Moldavian site but I think they don't have it anymore: " …

IDE DOM Recommendations?

VCFed about 4 months ago

Does anyone have recommendations for DOM's that work well with your IDE in retro solutions such as XT-IDE? …