Retrocomputing Beta
Profile Activity
Meta user
Network profile
cjs
Summary Answers Questions Tags Badges Bookmarks Bounties Reputation All actions

133 Answers

Votes Activity Newest
101
Why did IBM make the PC BIOS source code public?
Aug 13 '19 at 14:06
44
How slow was the 6502 BASIC compared to Assembly
Sep 29 '19 at 3:25
44
What's the relationship betweeen MS-DOS and XENIX?
Aug 15 '19 at 0:10
32
Why did post-8008 CPUs not keep the on-chip stack idea?
Jun 5 at 4:40
28
Late 1970s and 6502 chip facilities for operating systems
Sep 19 '19 at 3:31
26
When low-level formatting a floppy, how does one ensure any existing sector markers are overwritten?
Mar 1 at 16:58
26
Was there a clearly identifiable “first computer” to use or demonstrate the use of virtual memory?
Nov 7 '19 at 5:15
25
What's the timeline of Motorola 6800-family CPUs from 1974 to 1979?
Jul 31 '19 at 20:18
24
What causes the traces to wrinkle like this and should I be worried
Sep 19 '19 at 21:40
23
For how long can you safely stop the clock on an NMOS 6502?
Apr 12 at 10:45
21
What do the '80/40' and 'keyboard' buttons on my Apple IIc do?
Feb 29 at 4:17
21
NES chips usage
Jan 23 at 4:31
21
Intel 8080-based home computers
Jul 16 '19 at 9:20
20
What is DRAM refresh and why is the weird Apple II video memory layout affected by it?
Mar 3 at 15:01
20
Why did the Apple IIe use a 2 MHz-rated 6502, even though it ran at only 1 MHz?
Mar 17 at 3:32
20
What was the first LISP compiler?
Sep 9 '19 at 3:44
19
What was the rationale behind 36 bit computer architectures?
Jul 24 '19 at 3:24
18
cprintf printing invisible characters in C program on VIC 20
Oct 4 '19 at 7:24
18
On a Gameboy, what happens when attempting to read/write external RAM while RAM is disabled?
Jul 22 '19 at 6:47
16
How was a line of Commodore 64 BASIC code stored in its memory?
Mar 8 at 2:09
16
Were internet costs ever billed per packet?
Mar 7 at 6:50
16
How were the 70's and 80's coin-op programmed?
Feb 28 at 17:53
15
What is the hex versus octal timeline?
Aug 21 '19 at 9:18
14
Did this analogue computer from 1960 really have Internet?
Mar 7 at 6:22
14
Zilog Z80 freezes while binary counting up to 65 536 (2^16)
Feb 4 at 1:18
14
Where did the free parameters of IEEE 754 come from?
Jan 27 at 8:41
14
Why are branches relative in many 8-bit CPUs?
Nov 24 '19 at 3:57
12
Could we have avoided the whole UTF-16 fiasco?
Mar 19 at 0:57
12
What happened to the S1 operating system?
Mar 1 at 5:42
11
Can I use the DEC VT220 composite output to connect it to a TV?
Oct 9 '19 at 0:53
1
2 3 4 5