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Turn the page ---> Control CharactersThe ascii characters 0 - 32 |
I know you have printed ascii chars 13 and 10 to the screen before. This is so that you can get a CR, LF (Carriage Return, Line Feed). However, have you ever tried to print a backspace to the screen? These are the ascii characters 0 - 32 and there "commands": (Lines with an '*' just print the ascii char, not the command) Value Name Description 0 NUL *Null character 1 SOH *Start of heading 2 STX *Start of text 3 ETX *End of text 4 EOT *End of transmission 5 ENQ *Enquiry 6 ACK *Acknowledge 7 BEL Bell 8 BS Backspace 9 HT Horizontal tab 10 LF Line-feed 11 VT *Vertical tab 12 FF *Form feed 13 CR Carriage-return 14 SO *Shift out 15 SI *Shift in 16 DLE *Data link escape 17 DC1 *Device Control 1 18 DC2 *Device Control 2 19 DC3 *Device Control 3 20 DC4 *Device Control 4 21 NAK *Negative Acknowledge 22 SYN *Synchronous idle 23 ETB *End Transmission Blocks 24 CAN *Cancel 25 EM *End of Medium 26 SUB *Special Sequence 27 ESC *Escape 28 FS *File separator 29 GS *Group separator 30 RS *Record separator 31 US *Unit separator 32 SP SpaceNote: Basic won't allow you to PRINT these "commands". However, use service 06h of Interrupt 21h. ¥ |
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