Included tags: dos ×
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Can't share an IRQ in DOS with a device I'm not even using?

VCFed about 3 months ago

Apologies if this has been asked many times before, but: I've read lots of things saying that IRQs can't be shared, and I understand why that could be the case if I had two devices triggering the same IRQ line and two drivers I wanted to process those inte …

First Osborne Group (FOG) software

VCFed about 3 months ago

I have recently received a group of 5 1/4" floppies marked "FOG - DOS" Games . I understand these were part of initial group of disks created by members of the group sometime in the mid '80s. Can anyone provide any additional information o …

Can I use 2 Winchester controller cards to add a third floppy to my 486 computer

VCFed about 3 months ago

I have a 486DX Micro Q (?) desktop computer that has a Maxtor HD and a 5 1/4" TEAC 1.2 MB drive and a 3 1/2" floppy drive. It is running DOS 5.0 and has 5 ISA slots available. I cannot find any markings on the current controller card as to the …
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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 …

Not Enough Memory Question

VCFed about 3 months ago

Hello: I have a Pentium PC with an issue with a few games stating not enough memory. If I take out the CD ROM lines in the Autoexec.bat and Config.sys files, the game loads fine; however, I cannot manually initialize the CD ROM without the line in the Co …

Help to find the CD-ROM of the SSV CP/486SX2 DIL/NetPC with ADNP/1486-3V module starter kit

VCFed about 3 months ago

I recently acquired this CP/486SX2 DIL/NetPC PC/104 board (made by SSV Embedded Systems, a German company) which essentially acts as a breakout board for the ADNP/1486-3V module (based on the AMD Elan SC410 SoC) and while it works it only boots from a CF C …

Mysterious PC-DOS 1.10 Disk

VCFed about 3 months ago

While browsing @geneb's Internet Archive uploads, I came across this weird copy of PC-DOS 1.10. It is weird because it came on an 8" disk, in CP/M format. Had that been the only anomaly, I might not have bothered mentioning it. However, what adds an e …

DEPCA Ethernet card DOS 3.3 driver

VCFed about 4 months ago

I have an IBM AT PC which has a DEPCA Ethernet card. The original hard disk has failed and so I have reloaded a new system disk with DOS 3.3 and Windows 2.11 I would like to use the Ethernet card to enable me to connect to a network again. I assume I wil …

Driver for DEPCA Ethernet Card

VCFed about 4 months ago

I have an IBM AT PC which has a DEPCA Ethernet card. The original hard disk has failed and so I have reloaded a new system disk with DOS 3.3 and Windows 2.11 I would like to use the Ethernet card to enable me to connect to a network again. I assume I wil …

SBC/small motherboard with real floppy controller?

VCFed about 4 months ago

I'm looking to build an all-in-one disk imaging box, and I think the best way to to that in terms of broad software and format support is running DOS using ImageDisk, etc. What I want to find is the smallest possible 486 or better (so I can dual-boot a *NI …

PC 486SX (ao486) • Emulating Hardware

MISTerFPGA about 4 months ago

On the AO486 core, is it possible to make other emulated hardware with a pi (or other device) like the MT-32?? Maybe the 80487 Math Co-Processor and Video Cards and/or Audio Cards? This could transform the core into a 486DX4-75 from 486SX-33??My first PC …

86-DOS 0.11 Source Code Reconstruction

VCFed about 4 months ago

I have reached a significant milestone in my disassembly project for 86-DOS 0.11, and I am excited to create a dedicated thread for it. Some of you may remember my previous work on the DOS kernel; well, now I am pleased to announce that I have completed th …

simple //e cassette problem

Apple Fritter about 4 months ago

First post!  So I'm sure I'm gonna break a bunch of rules!  :^)  I did search the forum for this question before posting! This is my first foray into the // world.  I got a new-to-me //e.  I installed a ReActiveMicro PSU before even turning it on. I …

Wanted - Epson QX16 DOS disks

VCFed about 4 months ago

I'll looking for a complete set of MS-DOS disks for the QX-16. I have a single DOS disk that boots to DOS, but lacks any of the utilities. …

Simcity Original for DOS

VCFed about 4 months ago

Im looking for a working version of the Original Simcity for DOS. I want to find a copy that works on ALL the video formats properly. I used to play this on my IBM 5160 with CGA monitor and want to relive that as well as try out other modes like hercules I …

PC 486SX (ao486) • ao486 with Top 300 DOS Games Pack - TOO easy to set up?

MISTerFPGA about 4 months ago

Behind this clickybaity headline is a couple of real questions.Having seen long videos and guides, but these lengthy explanations don't seem necessary.I just downloaded the two hard disks from a certain archive, unpacked the multiple ZIP files with The Un …

Online manual for GRAFIX now updated to v2.70

VCFed about 4 months ago

I have been in contact with the webmaster for RGB Classic Games, who also hosts copies of GRAFIX for downloading. He has been nice enough to publish an online version of the manual for GRAFIX. He has updated it to the current version 2.70. You can access t …

IBM PC 5150 Monitor + BIOS ROM

VCFed about 4 months ago

@RichCini and I have collaborated on reconstructing the Monitor + BIOS ROM code that Microsoft used to transfer 86-DOS binaries to prototype IBM PCs in the early days of PC-compatible DOS. According to the notes written by Bob O'Rear (one of the core devs …

Commodore 16, 64, 128, VIC-20, PET • Certain C64 Games are Having Problems Loading

MISTerFPGA about 4 months ago

Hello, after completing some school education a long time ago. Loaded Spellicopter without any problems, however Designasaurus only showed white garbage icons before crashing. After Sticky Bear performs his juggling animation on the title screen, Sticky B …

NEC Floppy drive punctures my disks

VCFed about 4 months ago

I bought a NEC FD1155C 5.25" floppy drive (DD/HD) off Ebay. The drive arrived today and I installed it into my 5160/XT computer. It can supposedly handle 360 kb disks as well as 1.2 mb ones, and was pre-configured (by the seller) to 360 mode. I don't …

How do I see how much memory in DOS?

VCFed about 4 months ago

In DOS 6.22, how do I tell how much RAM is installed? The memory chips do not have the amount on them (they are 72 PIN SIMMs). …

Norton System Information fried the XT-CF-Lite in my 5160?

VCFed about 4 months ago

So, playing around with the XT system that I am putting together piece by piece. After succesfully plugging in and configuring XT-CF-lite 4.1 card, installing PC DOS 3.30 to my CF hard drive and playing around with some games in composite CGA mode, I decid …

ISA/DOS Sound cards and VIA Chipsets, what do I look for?

VCFed about 4 months ago

I've learned the hard way that Creative Labs cards do not play well with VIA chipsets. And I'm going to VCF SoCal next month, so hopefully I will get a chance to look for something better! I don't have a ton of money to spend, so what sorts of cards should …

Text displaying/graphics issue on my 5160

VCFed about 4 months ago

Hi everyone! I recently got enough of the various parts for my XT build to be able to install my XT-CF-Lite 4.1 card and PC-DOS 3.30 to it and, you know, get it to run to do anything other than BASIC. I went through the XUB update relatively smoothly (the …