commit 7ab49f98cf38d3dec6fa278b492db85fdf77d89b
parent a4928d00786c4b96cad4fceaeab5fa99b9b8aeca
Author: Ville-Matias Heikkila <viznut@low.fi>
Date: Tue, 14 Jun 2022 12:18:43 +0300
fix formatting
Diffstat:
1 file changed, 1 insertion(+), 0 deletions(-)
diff --git a/character_terminal.mdwn b/character_terminal.mdwn
@@ -39,6 +39,7 @@ Problems:
* Some special-purpose VT terminals feature bitmap and vector graphics ("Sixel" and "ReGIS"), and some terminal emulators (xterm) actually support them. However, Sixel graphics was defined so that each individual color needs to be separately transmitted (no proper bitplanes), so it makes sense only for very low-color images.
Some technical vocabulary:
+
* ANSI X3.64 is a ~1976 control sequence standard for character-based video terminals. It was criticized for being too complicated for "dumb" hardware and thus requiring a microprocessor. One of the complications was the use of ASCII decimal numbers as command parameters (earlier terminals had used single bytes instead).
* VT100 and VT102 are physical, microprocessor-based text terminals manufactured by Digital Equipment Corporation in around 1978-1983. They became the de-facto reference implementation of the ANSI standard.
* ANSI.SYS on the [[IBM PC]] is another influential implementation of the standard. Notably, it supports the cell-specific foreground and background colors of the CGA-compatible display controllers. "Ansi art" therefore usually refers to art made for the IBM PC textmode, including the non-standard pseudographic characters featured in the IBM PC character set.
