Retrocomputing Beta

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earned this badge 49 times.
When did compilers start generating optimized code that runs faster than an average programmer's assembly code?
Awarded Sep 15 '20 at 8:15
Why when outputting registers' value the result is a wrong fluctuating value in a Z80 CPU?
Awarded Jun 16 '20 at 4:48
Why does the 80486 take longer to execute simple instructions than complex ones?
Awarded May 22 '20 at 16:51
How did ZX81 assembly debuggers implement breakpoints?
Awarded May 13 '20 at 2:35
Why does the .z80 emulator-snapshot format have separate fields for the 8-bit refresh register and bit 7 of R?
Awarded May 1 '20 at 7:02
Was self-modifying code possible using BASIC?
Awarded Dec 30 '19 at 3:05
Disable memory refresh on Z80
Awarded Nov 5 '19 at 10:30
In the original Z80 layout, where are the “traps” located? And what are their effects?
Awarded Oct 23 '19 at 19:30
Is there a device that will take composite video from a vintage computer and filter it so it is green or amber like the old monochrome monitors?
Awarded Sep 3 '19 at 11:45
Where can I find schematics for a simple first-generation MSX computer?
Awarded May 21 '19 at 20:35
What was the reason for the ZX Spectrum's display bitmap layout?
Awarded Aug 14 '18 at 17:00
Ideal resolution for color computer on NTSC
Awarded Jul 23 '18 at 2:25
How do I connect a modern display, keyboard, and mouse to a Power Macintosh 6100?
Awarded Dec 14 '17 at 13:26
Why did the Sinclair ZX-Spectrum use a membrane keyboard?
Awarded Oct 6 '17 at 9:21
Documentation for the ZX Spectrum ULA
Awarded Sep 29 '17 at 9:05
How could high level functions with return values map to 6502 assembly? (if at all possible)
Awarded Jul 22 '17 at 19:40
How did programs on coding forms get run?
Awarded Jun 28 '17 at 15:53
Why did the ZX Spectrum use edges for its tape storage routines?
Awarded Jun 8 '17 at 13:01
Did scanlines appear on the ZX Spectrum screen?
Awarded May 25 '17 at 14:00
Is there a better way to the 6 disks install of Windows 3.1
Awarded May 20 '17 at 19:58
Did early assembly games use hardcoded memory locations?
Awarded Apr 28 '17 at 18:52
Why did POKEing ROM addresses mask port writes?
Awarded Feb 21 '17 at 17:24
Can a USR command damage a ZX Spectrum?
Awarded Feb 8 '17 at 11:38
How and why did the ZX Spectrum use so many voltages?
Awarded Feb 7 '17 at 13:50
Limiting factor on early color palettes
Awarded Jan 30 '17 at 16:09
Commodore 64 to modern TV
Awarded Jan 15 '17 at 21:04
Wiring a Zilog Z80
Awarded Jan 12 '17 at 4:28
(post deleted or otherwise unavailable)
Awarded Jan 8 '17 at 20:20
Which computers had redefinable character sets?
Awarded Jan 4 '17 at 5:01
My Compaq Presario CDS 633 outputs color in Windows 3.1 but not in DOS. How can I get color in DOS?
Awarded Jan 3 '17 at 13:06
Is it possible to use an Amstrad CPC464 with a modern monitor or TV
Awarded Dec 22 '16 at 21:09
How are held-down keys handled in CHIP-8?
Awarded Dec 7 '16 at 15:22
Why did Sinclair choose the Z80 for its range of home computers?
Awarded Nov 21 '16 at 9:46
Can polarity inversion damage a ZX Spectrum?
Awarded Nov 4 '16 at 16:54
What format is the (Timex) Sinclair ZX Spectrum SCREEN$/.SCR file
Awarded Jul 14 '16 at 6:05
LCD Displays with the Intel 8080
Awarded Jun 23 '16 at 23:41
How was polyphony achieved on systems with only one audio channel?
Awarded Jun 14 '16 at 11:37
Can x86 processors run 8-bit applications?
Awarded Jun 10 '16 at 12:27
Loading ZX Spectrum tape audio in a post-cassette world
Awarded Jun 8 '16 at 13:58
How did Windows 3.1 implement multitasking?
Awarded Jun 8 '16 at 11:24
How did debugging software run without memory protection?
Awarded Jun 2 '16 at 9:48
Did the LET statement actually do anything in 8-bit Microsoft BASICs?
Awarded May 30 '16 at 4:18
Adapting a “modern” keyboard to a ZX Spectrum
Awarded May 25 '16 at 19:18
How do Amiga 600 CPU accelerators work?
Awarded May 23 '16 at 22:08
80286 can switch from real mode to protected mode - but why not back?
Awarded May 23 '16 at 17:54
With a 15 kHz video signal (240p or 480i), does VGA have any real-world advantage over S-Video?
Awarded May 20 '16 at 20:01
Did any microcomputers back in the day accellerate standard-cassette performance
Awarded May 16 '16 at 17:28
How did the Amiga 500 left-side expansion port work?
Awarded May 9 '16 at 23:01
How was 8-channel audio achieved on Amiga?
Awarded May 9 '16 at 21:06

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