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14 votes
3 answers
4k views

Which font with slashed zero is being used in this screengrab?

user3840170
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31 votes
5 answers
5k views

What really is a sound card driver in MS-DOS?

Stephen Kitt
  • 107k
24 votes
6 answers
9k views

Why was video, audio and picture compression the poorest when storage space was the costliest?

Simon Farnsworth
  • 961
25 votes
8 answers
7k views

Why did x86 support self-modifying code in the 80s and 90s?

user3840170
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7 votes
2 answers
2k views

IBM PC memory map - why RAM at the bottom?

Raffzahn
  • 191k
13 votes
2 answers
1k views

In what year was my old, long-lost IBM PC made and which form factor/model was it?

Fred
  • 566
5 votes
2 answers
178 views

Why did some BIOSes have the timer tick wrap around at 1800B1h instead of at 1800B0h?

Raffzahn
  • 191k
14 votes
1 answer
876 views

What technical aspects make NEC PC-98 architecture incompatible with IBM PC architecture?

Justme
  • 23.3k
34 votes
2 answers
5k views

How did MS-DOS assign drive letters in the case of more than two floppy disk drives?

user3840170
  • 19.8k
23 votes
6 answers
6k views

Were CD-ROM-based games able to "hide" audio tracks inside the "data track"?

benrg
  • 1,398
18 votes
5 answers
5k views

What was the first multiprocessor x86 motherboard?

Stephen Kitt
  • 107k
10 votes
3 answers
1k views

How to write text in MODE 0x13?

Lone Learner
  • 345
27 votes
5 answers
7k views

Why was IBM BASIC so Huge?

user3840170
  • 19.8k
9 votes
1 answer
677 views

Was sector size under software control on the original IBM PC floppy drive controller?

Stephen Kitt
  • 107k
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