Retrocomputing

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Answer a question more than 60 days later with score of 5 or more. This badge can be awarded multiple times.
Awarded 571 times.
Why does the Z80 include the RLD and RRD instructions?
Awarded 7 hours ago
How is the ‘Coprocessor segment overrun’ exception supposed to be handled?
Awarded Nov 26 at 0:32
Extensions to Apple BASIC with ampersands
Awarded Nov 25 at 19:25
How widely was 0xDEADBEEF used as a placeholder, invalid value?
Awarded Nov 24 at 0:08
Why did PAL Apple //e motherboards have the AUX slot inline with Slot 3 instead of near the power supply?
Awarded Nov 20 at 18:42
Was AGP only ever used for graphics cards?
Awarded Nov 17 at 16:57
Process model in early UNIX
Awarded Nov 9 at 8:01
Building hello world on a Macintosh IIfx with mpw
Awarded Nov 5 at 22:26
How do I connect a command prompt to a serial line in MS-DOS 6.22?
Awarded Nov 3 at 18:34
Would compare-and-branch have added an extra cycle on ARM-1?
Awarded Oct 29 at 3:26
How can I adapt a digital CGA/C128 signal (RGBI DE-9) to a modern monitor?
Awarded Oct 20 at 0:48
Why was Wireplay "faster and more reliable" than dial-up Internet, since they both used the same hardware?
Awarded Oct 18 at 14:04
Could the N64 have supported more than 8MB of RAM
Awarded Oct 17 at 3:57
Did any computers use the Z80B?
Awarded Oct 12 at 10:06
IMPI Instruction set: is there any reference?
Awarded Oct 10 at 13:08
Did anyone ever run out of stack space on the 6502?
Awarded Sep 29 at 22:17
Only "Drive A:" detected with two floppy disk drives
Awarded Sep 27 at 11:34
Did any computers use the Z80B?
Awarded Sep 27 at 8:33
What was the first Unix version to run on a microcomputer?
Awarded Sep 27 at 1:09
Why did the Sinclair QL keyboard lack a Delete key?
Awarded Sep 16 at 3:20
What made some 8-bit BASIC interpreters especially slow?
Awarded Sep 10 at 15:12
How can I make the Microsoft C compiler for DOS emit a loop with an intermediate jump to continue?
Awarded Sep 5 at 21:16
Xerox 3700 Documentation?
Awarded Sep 4 at 15:22
How was dataflow analysis performed before SSA?
Awarded Sep 1 at 8:10
IMPI Instruction set: is there any reference?
Awarded Aug 29 at 18:15
Why are first four x86 General Purpose Registers named in such unintuitive order?
Awarded Aug 19 at 15:10
Raytheon 704 mini uses?
Awarded Aug 18 at 3:09
What prevents faster versions of old architectures from being created?
Awarded Aug 17 at 7:33
Why did the Atari 5200 revert to only two controller ports?
Awarded Aug 10 at 16:41
Cambridge Z88 Production Run
Awarded Aug 9 at 1:31
What are these keys on the БК-0010-series keyboards, and what do they do?
Awarded Aug 2 at 5:04
How much better was DEC Alpha than contemporaneous x86?
Awarded Jul 27 at 12:33
What software stack could I use to get X10 (the version of X before X11) up and running on a modern system?
Awarded Jul 20 at 21:49
What was the specific function of the relay which captured Grace Hopper's famous "bug"?
Awarded Jul 18 at 1:16
Undocumented ModR/M byte combinations
Awarded Jul 17 at 6:07
Besides the IBM 709 and its descendents, did any other machine have "slightly longer" registers?
Awarded Jul 16 at 8:27
Raytheon 704 mini uses?
Awarded Jul 8 at 14:45
How did Apple fail to tap the business and scientific markets?
Awarded Jul 1 at 16:01
Were there clones and/or national variants of IBM's 84-key AT keyboard?
Awarded Jun 30 at 9:46
What was the first programming language, other than Lisp, to have “short-circuiting” Boolean expressions?
Awarded Jun 19 at 11:31
What made Windows Me so crash-prone?
Awarded Jun 14 at 19:06
Using the (An)+ to Memory addressing mode when address register is pointed to ROM causes Sega Genesis DMA to fail
Awarded Jun 8 at 15:26
How do I compile C code with the IRIX X Window System?
Awarded Jun 1 at 7:20
What HyperCard extensions did Myst use?
Awarded May 26 at 18:11
How does the Apple II address more than 128KB of RAM?
Awarded May 13 at 3:10
The smell of a computer while unboxing it
Awarded May 5 at 7:51
When did compilers start generating optimized code that runs faster than an average programmer's assembly code?
Awarded May 2 at 15:45
Is it possible to chain TMS9918 chips to get better graphics?
Awarded Apr 26 at 14:48
Is there a line printer sound simulator?
Awarded Apr 25 at 6:12
What was the first personal computer to use surface mount components?
Awarded Apr 23 at 2:15
Where is Mike Lesk's (circa 1973) "portable I/O package" for C?
Awarded Apr 19 at 15:15
IBM Model F XT is typing random characters / what cable is this?
Awarded Apr 6 at 22:22
How to use ISA card in modern PC
Awarded Apr 3 at 23:35
Why did Extended BASIC on the TI-99/4A only allow 28 of the 32 sprites?
Awarded Apr 3 at 16:20
Data on the BBN C/70?
Awarded Apr 1 at 7:28
When did CPUs start using page mode DRAM?
Awarded Mar 28 at 4:33
Identify early portable computer
Awarded Mar 22 at 0:43
32-bit PCI riser cards: different types?
Awarded Mar 20 at 17:36
How did Windows 3.1 implement multitasking?
Awarded Mar 18 at 7:52
Did the PAL version of Super Mario Bros. on the NES really have faster music, and if so, why?
Awarded Mar 17 at 9:08
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