Click here to Skip to main content
15,877,051 members

Welcome to the Lounge

   

For discussing anything related to a software developer's life but is not for programming questions. Got a programming question?

The Lounge is rated Safe For Work. If you're about to post something inappropriate for a shared office environment, then don't post it. No ads, no abuse, and no programming questions. Trolling, (political, climate, religious or whatever) will result in your account being removed.

 
GeneralRe: Good day, fellow! Axe handle to you. Pin
kalberts27-Jun-23 6:50
kalberts27-Jun-23 6:50 
GeneralRe: Good day, fellow! Axe handle to you. Pin
Single Step Debugger28-Jun-23 2:44
Single Step Debugger28-Jun-23 2:44 
GeneralDid anyone here ever race the electron beam? And did you win the race? Pin
CodeWraith27-Jun-23 1:28
CodeWraith27-Jun-23 1:28 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
CPallini27-Jun-23 2:03
mveCPallini27-Jun-23 2:03 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
Marc Clifton27-Jun-23 2:18
mvaMarc Clifton27-Jun-23 2:18 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
BBar228-Jun-23 3:29
BBar228-Jun-23 3:29 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
glennPattonWork327-Jun-23 2:23
professionalglennPattonWork327-Jun-23 2:23 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
Daniel Pfeffer27-Jun-23 2:36
professionalDaniel Pfeffer27-Jun-23 2:36 
I've not done something quite as tricky as that, but I have resorted to similar tricks on an IBM CGA adapter.

The CGA adapter's memory was not double-ported, so writing to it as arbitrary times would interfere with the adapter's access to the memory, causing "snow" to appear on the screen. The BIOS got around this by updating the memory only during vertical refresh, but that was slow. It was discovered that you could just about write one byte to memory during the horizontal refresh, speeding up output considerably.

This had to be done while interrupts were disabled, so you wouldn't miss the window. Ensuring that no interrupts were missed during the screen update made this interesting...
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.

GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
CodeWraith27-Jun-23 3:12
CodeWraith27-Jun-23 3:12 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
  Forogar  27-Jun-23 3:24
professional  Forogar  27-Jun-23 3:24 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
Daniel Pfeffer27-Jun-23 3:55
professionalDaniel Pfeffer27-Jun-23 3:55 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
jmaida27-Jun-23 9:31
jmaida27-Jun-23 9:31 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
OriginalGriff27-Jun-23 3:55
mveOriginalGriff27-Jun-23 3:55 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
honey the codewitch27-Jun-23 5:20
mvahoney the codewitch27-Jun-23 5:20 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
DerekT-P27-Jun-23 11:12
professionalDerekT-P27-Jun-23 11:12 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
CodeWraith27-Jun-23 13:35
CodeWraith27-Jun-23 13:35 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
jochance28-Jun-23 5:43
jochance28-Jun-23 5:43 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
CodeWraith2-Jul-23 22:28
CodeWraith2-Jul-23 22:28 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
Member 1194113128-Jun-23 6:03
Member 1194113128-Jun-23 6:03 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
CodeWraith2-Jul-23 22:12
CodeWraith2-Jul-23 22:12 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
Member 119411313-Jul-23 10:25
Member 119411313-Jul-23 10:25 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
Juan Pablo Reyes Altamirano28-Jun-23 6:41
Juan Pablo Reyes Altamirano28-Jun-23 6:41 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
CodeWraith2-Jul-23 21:59
CodeWraith2-Jul-23 21:59 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
Matthew Barnett28-Jun-23 6:49
Matthew Barnett28-Jun-23 6:49 
GeneralRe: Did anyone here ever race the electron beam? And did you win the race? Pin
Member 119411313-Jul-23 9:50
Member 119411313-Jul-23 9:50 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Praise Praise    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.