User manual

Translation Formats

ProMaster 2500 User Manual D-5

ASCII Binary Format, Codes 01, 02, and 03(or 05, 06, and 07)

In these formats, bytes are recorded in ASCII codes with binary digits

represented by Ns and Ps, Ls and Hs, or 1s and 0s, respectively. See

Figure D-1. The ASCII Binary formats do not have addresses.

Figure D-1 shows sample data bytes coded in each of the three ASCII

Binary formats. Incoming bytes are stored in RAM sequentially starting

at the first RAM address. Bytes are sandwiched between B and F

characters and are separated by spaces.

Data can also be expressed in 4-bit words. The programmer generates the

4-bit format on upload if the data word width is 4 bits. Any other

characters, such as carriage returns or line feeds, may be inserted between

an F and the next B.

The start code is a nonprintable STX, which is a CTRL-B (the same as a

hex 02). The end code is a nonprintable ETX, which is a CTRL-C (the

same as a hex 03).

Figure D-1

An Example of ASCII Binary Format

BPPPPPPPPF BPPPPPPPPF BPPPPPPPPF BPPPPPPPPF

FORMAT 01 (OR 05)

BHHHHHHHHF BHHHHHHHHF BHHHHHHHHF BHHHHHHHHF

FORMAT 02 (OR 06)

B11111111F B11111111F B11111111F B11111111F

FORMAT 03 (OR 07)

LEGEND

Start Code - nonprintable STX - CTRL B is the optional Start Code

Characters such as spaces, carriage returns and line feeds may appear between bytes

End Code - nonprintable ETX - CTRL C

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