Justme's user avatar
Justme's user avatar
Justme's user avatar
Justme
  • Member for 5 years, 1 month
  • Last seen this week
68 votes

How did early green PS/2 to USB mouse adapters work?

54 votes

What exactly did the "UNFORMAT" MS-DOS command do?

46 votes

Why didn't PC games eschew MS-DOS and deal with BIOS directly?

45 votes

Why can't I invoke the next interrupt service by incrementing the AX register after calling the same interrupt?

43 votes
Accepted

Why did Nintendo 64 (1996) memory cards require a battery inside them to retain data whereas the PlayStation (1994) ones did not?

42 votes
Accepted

What is the purpose of mirrored memory regions in NES's CPU memory map?

40 votes

Why did some video games apparently use "interlaced" video modes?

40 votes
Accepted

Did MS-DOS have any support for multithreading?

39 votes
Accepted

What is happening in this algorithm scaling an 8-bit 0-99 value to full-range 16-bit?

35 votes
Accepted

What is the Commodore 64C "France version" and why does it need a beefy resistor?

34 votes
Accepted

When did the Linux kernel become libre software?

33 votes

How did people get apps on their computer before the Internet?

31 votes
Accepted

What is the serial protocol commonly used over RS-232 (among other links) and where did it come from?

28 votes
Accepted

Why did 1990s-2000s LCD all use 60 Hz refresh?

28 votes
Accepted

What are the screws for on the UltraSPARC?

27 votes
Accepted

How does Laplink achieve "high speeds" on standard/legacy serial ports?

26 votes

Why did old IBM-PC-compatible computers only have 16 colors available?

26 votes

Why weren't bootable game disks ever common on the IBM PC?

26 votes
Accepted

When did the Altair move ROM to the top of memory?

26 votes

How did an old mouse detect if it was connected to PS/2 or USB port?

26 votes
Accepted

Did any 8-bit device ever merge a CPU core?

25 votes

Why did Linux standardise on RTS/CTS flow control for serial ports

25 votes

Why were those colors chosen to be the default palette for 256-color VGA?

25 votes
Accepted

Identify MS-DOS 2D space adventure game c. 1992

24 votes
Accepted

What was the first programming language to use `+` for string concatenation?

24 votes
Accepted

How does a floppy drive identify the first and last sectors and tracks?

23 votes
Accepted

How can I set up the Microsoft C compiler to make it prefer immediate-mode push instructions?

23 votes

Why did computer video outputs go from digital to analog, then back to digital?

22 votes

Are BIOS ROMs interchangeable among different vendor's PCs?

22 votes
Accepted

How does the BIOS distinguish Interrupt(08h-12h) from INT instructions, vs. actual exceptions inside the CPU?

1
2 3 4 5
9