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1 answers
95 votes
28k views
18 bookmarks
Why did MS-DOS applications built using Turbo Pascal fail to start with a division by zero error on faster systems?
9 answers
78 votes
14k views
12 bookmarks
Why were CLIs typically light text on dark background, whereas GUIs typically use(d) dark text on light background?
4 answers
34 votes
5k views
4 bookmarks
Why did so many early microcomputers use the MOS 6502 and variants?
2 answers
29 votes
4k views
2 bookmarks
How did MS-DOS assign drive letters in the case of more than two floppy disk drives?
2 answers
28 votes
3k views
2 bookmarks
Why did connecting the IBM PC 3.5" FDD backwards cause the problems it did?
3 answers
18 votes
3k views
2 bookmarks
How to switch an 80286 from protected to real mode?
3 answers
16 votes
2k views
1 bookmarks
How did the IBM PC handle multiple physical devices serving memory at the same physical address?
4 answers
15 votes
2k views
3 bookmarks
Did the Intel 8086/8088 not guarantee the value of SS:SP immediately after RESET?
2 answers
11 votes
2k views
1 bookmarks
When specifying Intel 80x86 instruction execution time, what is included in the cycle count?
1 answers
10 votes
530 views
How were Microsoft GW-BASIC "protected" files encoded?
1 answers
8 votes
1k views
Which MS-/PC-DOS version was the first to allow multiple partitions to be used?