Retrocomputing

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earned this badge 651 times.
Asking explanation of 65C02 assembler code
Awarded 6 hours ago
When were other inexpensive computers able to recreate "The Amiga Juggler"?
Awarded 14 hours ago
Z80 is making weird relative jump errors. How can that be?
Awarded 2 days ago
IBM PC Alt + numpad for entering character codes: firmware, BIOS or OS?
Awarded 2 days ago
What would you call the occupation of a person who changes vacuum tubes?
Awarded Aug 15 at 16:40
In 16-bit MS-DOS, how do I get a file handle to the currently running .exe?
Awarded Aug 9 at 12:36
What's the origin of process return status 0 meaning success?
Awarded Aug 8 at 19:58
Resources about 1980s GPCPU video controller designs
Awarded Aug 2 at 19:55
Why does OpenGL use counterclockwise order to determine a triangle's front face by default?
Awarded Jul 29 at 7:25
Why does CP/M use CALL 0005h for its syscalls?
Awarded Jul 26 at 18:12
What date is 74029 on an IBM Mainframe?
Awarded Jul 21 at 22:27
Was 36-bits needed for LISP?
Awarded Jul 19 at 21:31
Running CP/M on my own Intel 8080 emulator
Awarded Jul 19 at 12:07
Carry handling during address generation on a 6502
Awarded Jul 18 at 14:35
Amiga multitasking - different resolution for each program on screen dragging
Awarded Jul 13 at 15:03
How can SPI be used with a Z80 CPU to control an RFM95 LoRa module?
Awarded Jul 11 at 14:11
Does any computer resemble the model taught in UK secondary education?
Awarded Jul 3 at 20:34
Why are the Intel 8080's rotate instructions called opposite to intuition?
Awarded Jul 3 at 1:08
Why does NumLock exist?
Awarded Jul 2 at 3:05
Why didn’t the 1980s micros use MC68010?
Awarded Jun 24 at 13:43
What is the history and development of memory caching?
Awarded Jun 23 at 3:16
In P.J. Plauger's "The Standard C Library" (1992), why are for loops used so frequently instead of while loops in the implementations?
Awarded Jun 22 at 21:40
How fast was Rambus compared to regular EDO RAM?
Awarded Jun 21 at 12:02
What is a "sympathetic bit"?
Awarded Jun 2 at 2:18
Intel 8080 and Altair 8800. 256 I/O ports, but only 7 free RST (interrupt subroutines) — how does it work?
Awarded May 26 at 18:36
Did the Oric-1 improve on the Spectrum's keyboard?
Awarded May 24 at 13:49
Why does the x86 not have an instruction to obtain its instruction pointer?
Awarded May 21 at 2:47
Can a stock/original Atari ST boot from a hard drive?
Awarded May 20 at 10:33
Why have MS-DOS device drivers if the ROM BIOS provides access to the same devices already?
Awarded May 15 at 6:21
What was the first games console to support linking consoles together for local multiplayer?
Awarded May 12 at 13:27
Why didn't the original Commodore PET computer use a standard typewriter style keyboard?
Awarded May 11 at 14:17
What did Shin Nihon Kikaku (SNK) originally manufacture in 1973?
Awarded May 2 at 16:08
What exactly is/was threaded p-code?
Awarded May 1 at 23:55
Patent barriers to IBM mainframe compatibility?
Awarded Apr 28 at 9:01
When/why did computers come to have push-button main power switches where on and off is the same push action?
Awarded Apr 23 at 11:09
Why were animated screensavers used instead of a black screen on CRT monitors?
Awarded Apr 22 at 0:15
Did Commodore ever produce gray colored Commodore 64?
Awarded Apr 21 at 16:08
When and why was the question mark chosen to abbreviate PRINT?
Awarded Apr 18 at 22:04
What is a Hollerith file on a GE/Honeywell computer?
Awarded Apr 15 at 21:02
Did early versions of DR-DOS preserve more registers than MS-DOS?
Awarded Apr 11 at 16:01
Why was the DOS clock device renamed from CLOCK into CLOCK$?
Awarded Apr 4 at 10:05
Why did the Apple III not support the color red?
Awarded Apr 1 at 18:36
Why was the Apple III considered a failure (if indeed it was)?
Awarded Apr 1 at 3:17
Home-computers of early 80's, capable of saving Basic-programs, as machine-code, or assembly-code, with a little extra code or other modification?
Awarded Mar 30 at 13:02
What did Microsoft customize on Windows 95 installation floppy disks?
Awarded Mar 29 at 8:19
What is the purpose of the 2x4-bit split of the PCH incrementer?
Awarded Mar 29 at 5:10
What was the first Object Oriented programming language?
Awarded Mar 28 at 23:21
Why are these DOS console drivers wasting precious bytes?
Awarded Mar 28 at 7:50
Why is slash so commonly used in old systems' abbreviations?
Awarded Mar 28 at 2:02
How were sprites in DOS games programmed?
Awarded Mar 25 at 11:42
Why 18 expansion slots on the Altair 8800?
Awarded Mar 24 at 3:51
Weird power lines for S-100, why no 5V?
Awarded Mar 23 at 15:57
Were some Atari 2600 games written in C?
Awarded Mar 23 at 13:02
Using Integer Basic on Apple II Plus without a Language Card?
Awarded Mar 21 at 13:01
Disk copy protection schemes for Apple II
Awarded Mar 7 at 11:55
Why was ones-complement integers implemented?
Awarded Mar 5 at 16:56
Why did the ZX81 16K RAM pack use two PCBs?
Awarded Mar 5 at 14:48
Can someone make a photograph of the original Apple 1 Integer BASIC cassette?
Awarded Feb 25 at 12:51
The two types of Return keys on keyboard layouts
Awarded Feb 23 at 15:11
How long did plasma displays persist?
Awarded Feb 22 at 16:03
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