Amiga ANSI escape code spec

[h0ffman]

I'm looking for an Amiga ANSI escape code spec. The one I found here doesn't seem to match what I'm seeing in actual ANSI art files.

For example the link say the following...

Select color 1 = 9B 33 31 6D

But in the file I'm looking at it's..

1B 5B 33 31 6D

Any idea why these are different?

[paraj]

Isn't it just because that documentation is assuming you'll be using a specific scripting language (AREXX?) that has a shorthand way of specifying escape sequences?

"Real" escape sequences always start with ESC ('1B' - sometimes rendered as ^[ like ^C is '03' with the hat meaning "control key", i.e. ^A = 1, ^G = 7 (bell), ... , ^[ = 27 ). And that's what AmigaDOS interprets.

'1B 5B 33 31 6D' would be "^[[31m" or "ESC[31m" which according to this (http://www.bambi-amiga.co.uk/aos39_m...k-main114.html) is "Turns on text color1 (shadow, default black)."

Not an ANSI expert, and don't know what's standard, but hopefully should give a starting point.

[alkis]

I think 0x9b is interchangeable with 0x1b 0x5b
This is called CSI (Control Sequence Introducer) and it has 2 represenations
- 1 byte (0x9b) or
- 2 bytes (0x1b 0x5b)

I would assume that the 2 byte sequence came first (in a 7-bit ascii era) and then later the one byte as a optimisation (?)

[thomas]

RTFM?
http://amigadev.elowar.com/read/ADCD.../node008C.html
http://amigadev.elowar.com/read/ADCD.../node0508.html

[Thomas Richter]

Originally Posted by h0ffman

I'm looking for an Amiga ANSI escape code spec.

The Amiga console implements a subset of the ECMA 48 console specification, which you find here:


https://www.ecma-international.org/w..._june_1991.pdf


It is by itself the ECMA interpretation of the VT-100 (and related) terminal industry standard.


For example, the SGR control sequence (aka CSI-m) is on page 75 of the above document.

Originally Posted by h0ffman

Any idea why these are different?

Because the 9B CSI control sequence can be substituted by ESC [, and it is one of the many substitute sequences for 7-bit terminals for the control sequences in the C1 control region. For example, OSC is substituted by ESC ], though the Amiga console probably does not interpret this sequence.