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| 75 |
Table | |
Some miscellaneous commands | |
Function | Cotitrol code |
Soundbell | CHRW) |
(ESC) “@” | |
IOffline | ’I |
IOn line | ICHI@x17) |
(ESC) “8” | |
(ESC) “9” | |
. | W8) |
move mintheadbackonesnace1CHI | |
Deletelastcharactersent | CHR$(127) |
Canceltextinprintbuffer | CHR$(24) |
I’(E.pSC)“i”1 | |
I(ESC) “i”f1 | |
Addn dotspacesbetweencharacters1(ESC) CHR$(32)CHR$(n) | |
| 1(ESC>“V”CHR$(n) |
Repeatcharacters | CHR$(ml)...CHR$(mx) |
| (ESC)“V”CHR$(O) |
n Backspace, delete, and cancel text
Backspace (CHR$@)) “backs up” the printhead so that you can print two characters right on top of each other. Each time your printer receives a backspace it moves the printhead one character to the left, instead of to the right. You can St&e over multiple letters by sending more than one backspace code.
Delete (CHR$(127)) also “backs up” one character, but then it “erases” the previous character (it’s erased from your printer’s buffer, not from the paper).
Cancel text (CHR$(24)) deletes all the text in the print buffer; that is, in the line before the delete text command. Since your printer prints one line of text at a time, only that line will be deleted.
The following program shows how these codes works.
10 ’ Backspace, delete, and cancel line
20 LPRINT “BACKSPACE DOES NOT”;
30 LPRINT CHR$(S);CHR$(S);CHR$(8);
40 LPRINT **===WORK”
50 LPRINT “DELETE DOES NOT”;
60 LPRINT CHR$(127);CHR$(127);CHR$(l27);
70 LPRINT “WORK”
80 LPRINT “CANCEL LINE”;
