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Retrocomputing

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earned this badge 131 times.
Why did tactile-feedback keyboards lose popularity?
Awarded Aug 17 at 10:40
Is there a pre-defined compiler macro for legacy Microsoft C 5.10 to get the compiler's name and version number?
Awarded Aug 9 at 22:38
What purpose did the lower-right "Enter" key serve on the original Mac 128k keyboard?
Awarded Aug 7 at 3:51
What file format was used for binary executables on Motorola 680x0 Macintoshes?
Awarded Jul 14 at 0:04
Mac Mini G4 not reinitialized
Awarded Jul 7 at 15:47
Can input lag be modeled as a function of controller cable length for SNES?
Awarded Jun 10 at 1:05
How do I properly exit a program and return to the CCP in CP/M?
Awarded Apr 10 at 2:56
Atari SIO vs IEEE 488
Awarded Mar 4 at 16:04
Did any CPUs have a special instruction for multiplying or dividing by ten?
Awarded Mar 1 at 15:05
What did corporations use for long-distance networks in the 1980s?
Awarded Feb 14 at 9:08
Why didn't PC games eschew MS-DOS and deal with BIOS directly?
Awarded Feb 12 at 20:48
Are there any articles elucidating the history of the POPCOUNT instruction?
Awarded Jan 5 at 2:57
Why did Steve Jobs choose the Motorola 68030@25 MHz for the first NeXT Computer in 1988 and not an Intel 80386DX@25 MHz processor?
Awarded Dec 18, 2023 at 16:58
Is side 0 on the top or bottom of a floppy disk?
Awarded Nov 6, 2023 at 21:47
Does this 1978 code for a 6800 really clear ALL of memory?
Awarded Nov 3, 2023 at 15:28
What was the equivalent of "America Online" (AOL) outside America?
Awarded Oct 23, 2023 at 18:17
Did Cray computers use virtual memory?
Awarded Oct 4, 2023 at 13:53
Detecting if a video mode is supported by INT 0x10
Awarded Sep 19, 2023 at 8:26
Intel 8080 and Altair 8800. 256 I/O ports, but only 7 free RST (interrupt subroutines) — how does it work?
Awarded Aug 27, 2023 at 12:25
What are the electrical properties of the EAR and MIC sockets on a ZX Spectrum, and can they be connected between machines?
Awarded Aug 18, 2023 at 0:42
"Quit all programs, and then restart your computer" in the Windows 95 "Illegal operation" dialog
Awarded Aug 11, 2023 at 0:08
Difference between machine language and machine code, maybe in the C64 community?
Awarded Jul 3, 2023 at 17:26
In CP/M, how did a program know when to load a particular overlay?
Awarded Jun 28, 2023 at 5:04
How did ZX Spectrum games loaders prevent the use of MERGE?
Awarded Jun 21, 2023 at 21:40
Was there an equivalent to TELNET in the IPX/SPX protocol suite?
Awarded May 15, 2023 at 13:25
Is it possible to detect a CGA card on an IBM PC 5150 by write/reading the Motorola 6845?
Awarded May 4, 2023 at 20:32
What was Sinclair's intention with the Microdrive?
Awarded Apr 5, 2023 at 13:48
Difference between the 8255 and 8042 PPIs
Awarded Feb 21, 2023 at 21:57
Did the Amiga change CPU frequencies when switching between PAL and NTSC mode?
Awarded Jan 19, 2023 at 13:17
Did Microsoft really reserve secret APIs in Windows?
Awarded Dec 24, 2022 at 21:57
Why does the FRE() function in CBM BASIC v2 return negative values?
Awarded Dec 17, 2022 at 1:03
Do/did mechanical hard drives constantly spin the discs?
Awarded Sep 30, 2022 at 5:32
In the ISO 1990 C standard library, what was the rationale for having memcpy return one of its inputs?
Awarded Jun 22, 2022 at 10:25
Is there an equivalent of "#pragma once" in RGBASM (Gameboy DMG assembly language)?
Awarded Jun 15, 2022 at 10:36
How and why did the ZX Spectrum use so many voltages?
Awarded Jun 8, 2022 at 20:12
Where is DOS stored in memory when a program starts?
Awarded Jun 2, 2022 at 17:32
What information was "off limits" to IBM PC clone BIOS authors?
Awarded Mar 31, 2022 at 6:27
How did installers locate the Program Files directory on Windows 95?
Awarded Mar 16, 2022 at 14:35
How did old computers address far more than 64K of memory despite only having a 16 bit address bus?
Awarded Jan 15, 2022 at 11:33
Does the NES handle unlisted processor instructions differently from the Famicom?
Awarded Jan 12, 2022 at 16:41
Was there ever a microcomputer with a full-size keyboard and a hex numpad?
Awarded Dec 31, 2021 at 4:26
Does 10BASE-T need more sophisticated electronics than 10BASE5/10BASE2?
Awarded Nov 21, 2021 at 20:42
If a PS/2 device on a 32-bit x86 sends a byte to the IO port 0x60 and you read it, what happens next?
Awarded Oct 22, 2021 at 14:47
Is there a way to work around the maximum clock rate of Z80 PIO chips?
Awarded Oct 16, 2021 at 13:56
What's this computer in the 1988 movie "Vampire's Kiss"?
Awarded Oct 10, 2021 at 12:27
Cleaning buckling spring keyboards
Awarded Sep 20, 2021 at 21:51
What's the origin of terminating strings by setting the high bit of the last character?
Awarded Jul 24, 2021 at 6:46
Did any notable product use Intel's first RAM?
Awarded Apr 29, 2021 at 15:02
Was there a specific benefit to inverted (XOR) mouse cursors other than aesthetics?
Awarded Mar 31, 2021 at 3:11
Did any equipment ship with odd serial parity by default?
Awarded Mar 11, 2021 at 19:16
Intel 386 multiply bug
Awarded Feb 2, 2021 at 5:10
z80 crashes after executing some instructions
Awarded Dec 1, 2020 at 7:58
ZX Spectrum 48k Power Supply outputting 15V
Awarded Nov 11, 2020 at 23:57
Did computers come with circuit diagrams?
Awarded Nov 9, 2020 at 6:11
When IPv6 was designed were there any specific considerations for other planets?
Awarded Oct 22, 2020 at 22:41
Why are old CPUs like MOS Technology 6502 and Motorola 68000 considered better for real time systems applications than modern x86 based CPUs?
Awarded Oct 17, 2020 at 9:12
Z8410 DMA chip as GPU?
Awarded Oct 16, 2020 at 4:07
How to do I/O with emulation code?
Awarded Oct 7, 2020 at 6:42
How does memory addressing/mapping work in 8-bit systems?
Awarded Sep 11, 2020 at 11:26
Were there really any cost savings in Sinclair QL because of it being 8-bit design with 8-bit bus 68k CPU?
Awarded Jul 11, 2020 at 2:13
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