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HELP V550 A. Sloman October 1983 VED CONVERSION FOR VISUAL 550 ============================= The visual 550 is useable with VED but has a number of limitations. It starts up in low intensity mode so the library file has to transmit codes to convert it to high intensity mode. The main advantage is that the screen accommodates 33 lines. The main disadvantage is that the keypad does not convert, like the V200 or VT100, though with the 'FUNCTION FAST MOV' key depressed most of the number buttons do transmit special codes, 2 and 8 being the exceptions. Due to the large screen size, 18 is set as VEDSTARTWINDOW, i.e. the size of the lower window. Also there appear to be bugs in the software. Sometimes the screen remains as it was after you insert or delete a line. I cannot find anything systematic in this. So when inserting or deleting lines,0 make sure you see the lower part of the window move up or down. If not, then REFRESH the screen. Owing to shortage of keys, REFRESH has to be done as ESC v (lower case). There is supposed to be a set of graphic characters, but they do not seem to work properly, so VEDNOGRAPHICS() is used. E.g. the status line is made of hyphens. The function keys go from F1 to F12. Since F0 is not available, the sequence ESC DEL is used to delete character under the cursor. Otherwise F1 to F12 work as on the visual 200 F1 delete line to left F2 delete whole line F3 delete line to right F4 delete word left F5 delete word right F6 delete switch static mode F7 mark first line of range F8 mark last line of range F9 move marked range F10 push current position F11 pop current position F12 (temporarily) insert line above current line. (See ESC ESC left arrow) The ENTER button never transmits anything but the Carriage Return code. So the key marked HOME may be used for ENTER. ESC RETURN may be used instead for ENTER For moving the cursor up or down a quarter of a window at a time use ESC 8 cursor up fast ESC 2 cursor down fast Additional fast moves can be made with keypad number buttons while depressing the FUNCTION FAST MOV key. 1 is down left, 3 down right, 4 left, 5 up, 6 right, 7 up left 9 up right NB 2 and 8 only transmit their normal codes with the function key down NB note that key 5 can be used for fast cursor moves UP the screen Other keypad keys can be used if preceded by ESC: ESC - redo last command ESC , change mode - go to command line ESC 0 move word left ESC . move word right The ARROW keys, at the top of the keyboard, can be used for big or small jumps in four directions. If pressed on their own, the arrow keys move the cursor one space left, right, up or down. If preceded by ESC then do a SCREEN move, up down left right So ESC up-arrow moves cursor to top of window, and if repeated causes the window to move up the file, i.e. the file scrolls down. Use two ESCs for big vertical moves: If preceded by ESC ESC then up arrow goes to top of file, down arrow goes to bottom of file. Two escapes before the left or right arrow can be used to insert a new line above or below the curent line: ESC ESC left arrow does insert line above, ESC ESC right arrow inserts line below The VDU is capable of handline character insert or delete within a line, but this has not yet been implemented. --- C.all/help/v550 --- Copyright University of Sussex 1995. All rights reserved. ----------