Page 37 - ARM 64 Bit Assembly Language

20 Chapter 1

Table 1.3: The ASCII control characters.
Binary Oct Dec Hex Abbr Glyph Name
000 0000 000 0 00 NUL ˆ@ Null character
000 0001 001 1 01 SOH ˆA Start of Header
000 0010 002 2 02 STX ˆB Start of Text
000 0011 003 3 03 ETX ˆC End of Text
000 0100 004 4 04 EOT ˆD End of Transmission
000 0101 005 5 05 ENQ ˆE Enquiry
000 0110 006 6 06 ACK ˆF Acknowledgment
000 0111 007 7 07 BEL ˆG Bell
000 1000 010 8 08 BS ˆH Backspace
000 1001 011 9 09 HT ˆI Horizontal Tab
000 1010 012 10 0A LF ˆJ Line feed
000 1011 013 11 0B VT ˆK Vertical Tab
000 1100 014 12 0C FF ˆL Form feed
000 1101 015 13 0D CR ˆM Carriage return[g]
000 1110 016 14 0E SO ˆN Shift Out
000 1111 017 15 0F SI ˆO Shift In
001 0000 020 16 10 DLE ˆP Data Link Escape
001 0001 021 17 11 DC1 ˆQ Device Control 1 (oft. XON)
001 0010 022 18 12 DC2 ˆR Device Control 2
001 0011 023 19 13 DC3 ˆS Device Control 3 (oft. XOFF)
001 0100 024 20 14 DC4 ˆT Device Control 4
001 0101 025 21 15 NAK ˆU Negative Acknowledgment
001 0110 026 22 16 SYN ˆV Synchronous idle
001 0111 027 23 17 ETB ˆW End of Transmission Block
001 1000 030 24 18 CAN ˆX Cancel
001 1001 031 25 19 EM ˆY End of Medium
001 1010 032 26 1A SUB ˆZ Substitute
001 1011 033 27 1B ESC ˆ[ Escape
001 1100 034 28 1C FS ˆ\ File Separator
001 1101 035 29 1D GS ˆ] Group Separator
001 1110 036 30 1E RS ˆˆ Record Separator
001 1111 037 31 1F US ˆ_ Unit Separator
111 1111 177 127 7F DEL ˆ? Delete

computers use 8-bit bytes (or multiples thereof) as the basic storage unit, an extra zero bit is
shown in the most significant bit position.
Reading the Binary column from top to bottom results in the following sequence of bytes:
01001000 01100101 01101100 01101100 01101111 00100000 01010111 01101111