Why did programmers keep using EMS when XMS became commonly available?
I used to spend hours trying to get all of my drivers loaded in such a way that DOS games would still run. I actually managed to get a game that claimed it could not be run with DoubleSpace because of...
View ArticleWhat aspect of resetting a NES explains bits of game state being preserved?
I owned a Paperboy cartridge for the NES and something odd I noticed was that the random order of houses in the game stayed the same between pressing the Reset button, but were different when turning...
View ArticleWhich 8086 or 8088-based computer, probably made by Zenith, offered EMS...
During one of my early jobs, circa 1987, I wrote some stepper motor control and data acquisition software for an MS-DOS computer in Turbo Pascal. I'm trying to recall the computer model. I'm pretty...
View ArticleHow did MS-DOS utilities like 386MAX relocate drivers from lower 640 KB to...
You copy the driver code and data but how do you redirect everything that may have jumped into the old entry point?You could scan all the interrupt vectors and see if any of them pointed to that...
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