User cjs

106 votes

Accepted

Why did IBM make the PC BIOS source code public?

answered Aug 13, 2019 at 14:06

46 votes

Accepted

How slow was the 6502 BASIC compared to Assembly

answered Sep 29, 2019 at 3:25

44 votes

What's the relationship betweeen MS-DOS and XENIX?

answered Aug 15, 2019 at 0:10

43 votes

Accepted

Was 10BASE5 a mistake?

answered Nov 12, 2021 at 23:38

40 votes

Accepted

Why did post-8008 CPUs not keep the on-chip stack idea?

answered Jun 5, 2020 at 4:40

39 votes

Accepted

When did 5.25″ floppies exceed the capacity of 8″?

answered Nov 6, 2021 at 18:06

36 votes

Accepted

What was the release date of the MOS 8502?

answered May 11 at 18:10

33 votes

How did the IBM 5153 color display detect and modify the signal to make low-intensity yellow into "brown"?

answered Jul 27, 2022 at 8:37

29 votes

Was there a clearly identifiable "first computer" to use or demonstrate the use of virtual memory?

answered Nov 7, 2019 at 5:15

29 votes

Accepted

Late 1970s and 6502 chip facilities for operating systems

answered Sep 19, 2019 at 3:31

28 votes

Accepted

When low-level formatting a floppy, how does one ensure any existing sector markers are overwritten?

answered Mar 1, 2020 at 16:58

28 votes

Why was the 6502 version of Microsoft BASIC coded like the 8080 and 6800 versions even though this was rather inefficient?

answered Jun 6, 2022 at 7:13

27 votes

Accepted

What is DRAM refresh and why is the weird Apple II video memory layout affected by it?

answered Mar 3, 2020 at 15:01

26 votes

Accepted

For how long can you safely stop the clock on an NMOS 6502?

answered Apr 12, 2020 at 10:45

26 votes

Accepted

What's the timeline of Motorola 6800-family CPUs from 1974 to 1979?

answered Jul 31, 2019 at 20:18

25 votes

Accepted

What causes the traces to wrinkle like this and should I be worried

answered Sep 19, 2019 at 21:40

25 votes

Accepted

What was the first Lisp implementation that could generate machine code?

answered Sep 9, 2019 at 3:44

23 votes

What was the rationale behind 36 bit computer architectures?

answered Jul 24, 2019 at 3:24

22 votes

Accepted

What do the '80/40' and 'keyboard' buttons on my Apple IIc do?

answered Feb 29, 2020 at 4:17

21 votes

How were the 70s and 80s coin-op machines programmed?

answered Feb 28, 2020 at 17:53

21 votes

Accepted

NES chips usage

answered Jan 23, 2020 at 4:31

21 votes

Intel 8080-based home computers

answered Jul 16, 2019 at 9:20

20 votes

Accepted

Why did the Apple IIe use a 2 MHz-rated 6502, even though it ran at only 1 MHz?

answered Mar 17, 2020 at 3:32

19 votes

On a Gameboy, what happens when attempting to read/write external RAM while RAM is disabled?

answered Jul 22, 2019 at 6:47

18 votes

Accepted

cprintf printing invisible characters in C program on VIC 20

answered Oct 4, 2019 at 7:24

18 votes

How was a line of Commodore 64 BASIC code stored in its memory?

answered Mar 8, 2020 at 2:09

17 votes

Did this analogue computer from 1960 really have Internet?

answered Mar 7, 2020 at 6:22

17 votes

Could we have avoided the whole UTF-16 fiasco?

answered Mar 19, 2020 at 0:57

17 votes

Where did the free parameters of IEEE 754 come from?

answered Jan 27, 2020 at 8:41

16 votes

Were internet costs ever billed per packet?

answered Mar 7, 2020 at 6:50

Stack Exchange Network

162 Answers

Why did IBM make the PC BIOS source code public?

How slow was the 6502 BASIC compared to Assembly

What's the relationship betweeen MS-DOS and XENIX?

Was 10BASE5 a mistake?

Why did post-8008 CPUs not keep the on-chip stack idea?

When did 5.25″ floppies exceed the capacity of 8″?

What was the release date of the MOS 8502?

How did the IBM 5153 color display detect and modify the signal to make low-intensity yellow into "brown"?

Was there a clearly identifiable "first computer" to use or demonstrate the use of virtual memory?

Late 1970s and 6502 chip facilities for operating systems

When low-level formatting a floppy, how does one ensure any existing sector markers are overwritten?

Why was the 6502 version of Microsoft BASIC coded like the 8080 and 6800 versions even though this was rather inefficient?

What is DRAM refresh and why is the weird Apple II video memory layout affected by it?

For how long can you safely stop the clock on an NMOS 6502?

What's the timeline of Motorola 6800-family CPUs from 1974 to 1979?

What causes the traces to wrinkle like this and should I be worried

What was the first Lisp implementation that could generate machine code?

What was the rationale behind 36 bit computer architectures?

What do the '80/40' and 'keyboard' buttons on my Apple IIc do?

How were the 70s and 80s coin-op machines programmed?

NES chips usage

Intel 8080-based home computers

Why did the Apple IIe use a 2 MHz-rated 6502, even though it ran at only 1 MHz?

On a Gameboy, what happens when attempting to read/write external RAM while RAM is disabled?

cprintf printing invisible characters in C program on VIC 20

How was a line of Commodore 64 BASIC code stored in its memory?

Did this analogue computer from 1960 really have Internet?

Could we have avoided the whole UTF-16 fiasco?

Where did the free parameters of IEEE 754 come from?

Were internet costs ever billed per packet?