3980xpi Users Manual - Data I/O Corporation

Translation Formats
Spectrum Format, Codes 12 or 13
In this format, bytes are recorded in ASCII codes with binary digits
represented by 1s and 0s. During output, each byte is preceded by a decimal
address.
Figure 5-5 shows sample data bytes coded in the Spectrum format. Bytes are
sandwiched between the space and carriage return characters and are
normally separated by line feeds. The start code is a nonprintable STX, CTRL-B
(or hex 02), and the end code is a nonprintable ETX, CTRL-C (or hex 03).
Figure 5-5. Spectrum Format (example)
Optional Start Code
is a nonprintable STX
Address Code is 4
decimal digits
0000 11111111
0001 11111111
0002 11111111
0003 11111111
0004 11111111
0005 11111111
0006 11111111
0007 11111111
0008 11111111
0009 11111111
0010 11111111
0011 11111111
0012 11111111
0013 11111111
0014 11111111
0015 11111111 End code is a
nonprintable EXT
4 or 8 data bits appear between the
space and the carriage return
Note: Data without a start or end code may be input to or output
from the programmer by use of the alternate data translation
format code, 13.
5-8 3980xpi/3980/3900/2900 User Manual
0077-2