Talk:Text-based user interface

Fair use rationale for Image:Phoenix - AwardBIOS CMOS Setup Utility.jpg

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BetacommandBot (talk) 00:52, 14 February 2008 (UTC)

Fair use rationale for Image:MSDOS Edit.png

Image:MSDOS Edit.png is being used on this article. I notice the image page specifies that the image is being used under fair use but there is no explanation or rationale as to why its use in this Wikipedia article constitutes fair use. In addition to the boilerplate fair use template, you must also write out on the image description page a specific explanation or rationale for why using this image in each article is consistent with fair use.

Please go to the image description page and edit it to include a fair use rationale. Using one of the templates at Wikipedia:Fair use rationale guideline is an easy way to ensure that your image is in compliance with Wikipedia policy, but remember that you must complete the template. Do not simply insert a blank template on an image page.

If there is other fair use media, consider checking that you have specified the fair use rationale on the other images used on this page. Note that any fair use images lacking such an explanation can be deleted one week after being tagged, as described on criteria for speedy deletion. If you have any questions please ask them at the Media copyright questions page. Thank you.

BetacommandBot (talk) 13:40, 8 March 2008 (UTC)

3270 and vt100

Shouldn't this article have some information on text only interfaces from the mainframe era? (unsigned comment by 12.155.35.130)

probably (someone should collect material for it) Tedickey (talk) 16:33, 26 August 2008 (UTC)

Regenerating glyphs

Some discussion (with WP:RS) is needed to distinguish that from XOR'ing, which is a long-established graphics technique TEDickey (talk) 08:11, 30 September 2011 (UTC)

Hello, please explain how you would use this long-established XOR graphics technique on a textmode buffer to produce a pixel-precise mouse cursor. I'd really like to learn it.

Fwiw, i do remember reading an e-mail from Jeffrey Lim (author of Impulse Tracker) back in 1996 or 97, in which he described how difficult it was to get 80x50 textmode to do all these fancy effects. "Not nice to have to do" in his words, actually. Delt01 03:28, 8 October 2011 (UTC)

I don't see a WP:RS in the comments above. The textmode in this case had direct access to the memory used for the video display, and could use whatever technique the developer had in mind TEDickey (talk) 11:07, 8 October 2011 (UTC)

Can you please rephrase more clearly, and/or give examples of what you mean by "whatever technique"? Also sorry, i don't know what a "WP:RS" is. Delt01 20:16, 16 October 2011 (UTC)

WP:RS is explained in the topic at the link. By the way, 80x50 doesn't appear to be what your picture is using (there are items not on a regular character grid). More likely, it's using one of the graphics modes with similar resolution. TEDickey (talk) 20:52, 16 October 2011 (UTC)

For what it's worth, if I'd written the code you're alluding to, I'd have used a Colour look-up table, to translate the colors. There's not enough information in the picture shown to see how large the color palette is, but the picture doesn't show a large usage. TEDickey (talk) 21:03, 16 October 2011 (UTC)

> WP:RS is explained in the topic at the link.

Thanks, understood++ (and --motivation to add further contribs. thx a lot) - please stop marking contributions from other users as "dubious" just because you feel like it.

> By the way, 80x50 doesn't appear to be what your picture is using

uh... need full 640x400 ((80 * 8) by (50 * 8)) screenshot maybe? (Just run the music/audio sequencing program "Impulse Tracker" under DOSBOX emulator. I can personally guarantee that the on-screen results are the same as they were 15-20 years ago on actual msdos+vga hardware.)

> (there are items not on a regular character grid)

DUH, take a wild guess why, back in those days, we went to such extents at coding these VGA hacks...? (here, "items" being the mouse cursor - unless you see other items which aren't physically possible to render in 80x50 textmode?)

> I'd have used a Colour look-up table, to translate the colors.

To clarify: Textmode vga used a color "depth" AKA bits per pixel (or, in this case bits per CHARACTER or "CELL") of 2 bytes: asciicharacter=8bits, foregroundcolor=4bits, backgroundcolor=3bits, attributes=1bit - with the actual colormap (or look-up table) being written to the graphics card's registers. (8000+buffer_offset, anyone?) That's 2 bytes (16 bits) PER CHARACTER (or "cell" - of which there are 80x50 of) = 4000*2 = 8000 ...Colors are then selected for each character's foreground (from 16 colors) and background (from 8 colors, attr.bit=see below) ON THE ACTUAL SCREEN BUFFER - now, add to this the registers for redefining each character's bitmap (bitmaps are 1bpp, ie. 2kb for a 8x8 font of 256 characters, 4kb for a 16x8 font - as used by DOS "mode con/codepage" etc) AND the possibility of using a whole EXTRA FONT (SET of 256 characters) (bug me for specs || should be up soon) == full 16 colors for foreground, and 8 colors for background -- swapping 1 attribute bit for toggling between normal (0) and secondary (1) fonts. Impulse Tracker uses 9 characters (3 by 3 "cells") of the primary font continually swapping for its mouse cursor, and very often the whole "secondary" font (256 characters of 8x8) for extra stuff such as half-characters (4x8 font) seen in pattern view and infopage, graphic rendering of samples on sample list, vol/panning/filter envelopes on instrument view, etc.

/* sry for several edits in a row.... zZzZ tired (chronic fatigue syndrome) */

/* "sign your posts" (this supposedly appends my name/accountinfo/etc. to this edit? zZzZ exhausted..... ) sorry for being "wikilliterate" :3 */ Delt01 04:27, 18 November 2011 (UTC)

hmm - in the first part of the discussion, you are citing another person as the author of the program, and in the current response you appear to be asserting authorship. Bear in mind that talkpage comments aren't WP:RS. TEDickey (talk) 11:39, 18 November 2011 (UTC)

File:Itmouse.png Nominated for speedy Deletion

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