Monthly Archives: May 2022

NT video miniport UHD

I’ve finally managed to update the previously released NT video miniport. The reason for the update was indirect, hacking up the video “hardware” access code to support other environments. That led me to separate the generic mode set code from … Continue reading

Posted in NT, VirtualBox | 1 Comment

IDENTIFY ESDI DRIVE

As previously mentioned on this site, the IDENTIFY DRIVE command in the ATA specification almost certainly first appeared in ESDI controllers supplied to Compaq by Western Digital. Since I have now finally secured a working ESDI hard disk, I could … Continue reading

Posted in ESDI, IDE, PC hardware, PC history, Western Digital | 19 Comments

The Strange Case of GetEnvironmentStringsA

It was recently pointed out to me that a simple “hello world” style application built with Open Watcom C/C++ 1.9 does not run on Win32s version 1.30, even though the same executable runs just fine on Windows NT 3.51, Windows … Continue reading

Posted in Development, NT, Watcom | 21 Comments

1989 Networking: OS/2 NetWare Requester 1.1

When I wrote about the pre-release NetWare Requester for OS/2, the oldest archived officially released NetWare OS/2 Requester was version 1.2 from 1990. In the meantime, version 1.1 of the requester showed up, although I only became aware of that … Continue reading

Posted in NetWare, Networking, OS/2, PC history, Virtualization | 11 Comments

Learn Something Old Every Day, Part V: Early IBM PS/2 Hard Disks

So I have been (again) trying to properly archive old MS OS/2 SDKs. The version 1.02 SDK from December 1987 (corresponding to OS/2 1.0) turned out to be a bit of a poser. The SDK came on both 3.5″ and … Continue reading

Posted in ESDI, IBM, PC history, PS/2 | 16 Comments