2500_Users_Manual - 第340页

Trans lati on For mat s D-10 ProMaste r 2500 User Ma nual Formatted Binary Format, Code 10 Data transfer in the Formatted Binary format con sists of a stream of 8-bit data bytes preceded by a byte count and followed by a…

Translation Formats

ProMaster 2500 User Manual D-9

The 5-Level BNPF Format, Codes 08 or 09

Except for the start and end codes, the same character set and

specifications are used for the ASCII-BNPF and 5-level BNPF formats.

Data for input to the programmer are punched on 5-hole Telex paper

tapes to be read by any paper tape reader that has an adjustable tape

guide. The reader reads the tape as it would an 8-level tape, recording the

5 holes that are on the tape as 5 bits of data. The 3 most significant bits are

recorded as if they were holes on an 8-level tape. Tape generated from a

telex machine using this format can be input directly to a serial paper

tape reader interfaced to the programmer. the programmer’s software

converts the resulting 8-bit codes into valid data for entry in RAM.

The start code for the format is a left parenthesis, (Figs K on a telex

machine), and the end code is a right parenthesis, (Figs L on a telex

machine). The 5-level BNPF format does not have addresses.

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, 09. This

format accepts an abort character (10 hex) to abort the transmission.

Translation Formats

D-10 ProMaster 2500 User Manual

Formatted Binary Format, Code 10

Data transfer in the Formatted Binary format consists of a stream of 8-bit

data bytes preceded by a byte count and followed by a sumcheck, as

shown in Figure D-3. The Formatted Binary format does not have

addresses.

The programmer stores incoming binary data upon receipt of the start

character. Data are stored in RAM starting at the first RAM address

specified by the Memory Begin Address parameter and ending at the last

incoming data byte.

Figure D-3

An Example of Formatted Binary

Format

2 BYTE HEX SUMCHECK (02FB)

2 NULLS

BINARY DATA

BIT

RUBOUT (START CODE)

4 NIBBLE HEX BYTE COUNT

1 NULL

ARROW

HEAD

0020 HEX

(32 DECIMAL)

HIGH

ORDER

LOW

ORDER

0075-2

Translation Formats

ProMaster 2500 User Manual D-11

A paper tape generated by a programmer contains a 5-byte, arrow-

shaped header followed by a null and a 4-nibble byte count. The start

code, an 8-bit rubout, follows the byte count. The end of data is signaled

by two nulls and a 2-byte sumcheck of the data field. Refer to Figure D-4.

If the data output has a byte count GREATER than or equal to 64K, an

alternate arrow-shaped header is used. This alternate header (shown

below) is followed by an 8-nibble byte count, sandwiched between a null

and a rubout. The byte count shown here is 40000H (256K decimal). If the

byte count is LESS than 64K, the regular arrowhead is used instead. Data

that are input using Formatted Binary format will accept either version of

this format.

In addition, a third variation of this binary format is accepted on

download. This variation does not have an arrowhead and is accepted

only on input. The rubout begins the format and is immediately followed

by the data. There is no byte count or sumcheck.

DEC Binary Format, Code 11

Data transmission in the DEC Binary format is a stream of 8-bit data

words with no control characters except the start code. The start code is

one null preceded by at least one rubout. The DEC Binary format does

not have addresses.

Figure D-4

An Example of Formatted Binary

Format

RUBOUT (FF)

8 NIBBLE BYTE COUNT

NULL (00)

ARROW

HEAD

0483-2

DATA