Jonathan Adams wrote:

> Could somebody tell me how to use one of these? It is a generic card with
> an extra video connector attached by a wire to the front of the card.
> 
> --
> 
> 
>                   
> 

Here's a (maybe incomplete) List of control codes for videx and similar 
cards.

^ stands for CTRL, ASCII code is lowered by 32, e.g. ^K stands for 
CHR$(ASC("K")-32).

^G: Bell
^H: Backspace/CRSR Left
^I: Tab
^J: Linefeed/CRSR Down
^K: CRSR Up
^L: CRSR Right
^M: Carriage Return
^N: NORMAL
^O: INVERSE
^Y: HOME
^\: CRSR Right
^^: HOME
^_: CRSR Up

ESC stands for ^[ or CHR$(27). So ESC * means CHR$(27)+"*" etc.

ESC (: INVERSE
ESC ): NORMAL
ESC *: HOME
ESC T: Clear from Cursor to end of Line
ESC Y: Clear from Cursor to end of Screen
ESC = followed by CHR$(Y+32) CHR$(X+32): sets Cursor to X,Y.

Attention: PRINT CHR$(27) in Applesoft basic does NOT output ESC to the 
card. The ROM in its great wisdom will filter it out. However it works 
from MBASIC (under CP/M).

Also Note: there seems to be a few duplicates. Probably for software 
compatibility with different terminal types.

-- 

Linards Ticmanis

  The Master said, "The business of laying on the colors follows the
preparation of the plain ground."