Technical data

8.3.1
Block Headers in the User
Memory
Each block in the memory begins with a five word long header.
1st word: block start identifier: 7070H
2nd word: high byte = block type
3rd word: the high byte of the 3rd word contains the identifiers for
the programmer, the low byte contains part of the
library number.
4th word: the fourth word contains the rest of the library number.
5th word: the 5th word (low and high byte) contains the length of
the block including the block header. This is specified
in words.
01H Data block DB
02H Sequence block SB
Program block PB
Function block FX
Function block FB
Data block DX
Organization block OB
04H
05H
08H
0CH
10H
00
address list in DB0
in the address list of DB0
01
The block is invalid, not entered in the
Block in the RAM is valid, and is entered
Low byte = block number
The block number (0 to 255) is in the low byte of the 2nd header word
and is coded in binary: 00 to FFH
Bit no. 15 14 13 12 11 10 9 8
User Memory Organization in the CPU 928B
CPU 928B Programming Guide
8 - 10 C79000-B8576-C898-01