GE PACSystems RX7i, Cpu Programmer'S Reference Manual

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Chapter 3. Program Data
40 PACSystems* RX7i, RX3i and RSTi-EP CPU Programmer's Reference Manual GFK-2950C
3.3 User Reference Size and Default
Maximum user references and default reference sizes are listed in the table below.
Item Range Default
Reference Points
%I reference 32768 bits 32768 bits
%Q reference 32768 bits 32768 bits
%M reference 32768 bits 32768 bits
%S total (S, SA, SB, SC) 512 bits
(128 each) 512 bits
(128 each)
%T reference 1024 bits 1024 bits
%G 7680 points 7680 points
Total Reference Points 107520 107520
Reference Words
%AI reference 0 — 32640 words 64 words
%AQ reference 0 — 32640 words 64 words
%R, 1K word increments 0 — 32640 words 1024 words
%W 0 — maximum available user RAM 0 words
Total Reference Words 0 — maximum available user RAM 1152 words
%L (per block) 8192 words 8192 words
%P (per program) 8192 words 8192 words
Managed Memory
Symbolic Discrete 0 — 83,886,080 (bits) 32768
Symbolic Non-Discrete 0 — 5,242,880 (words) 65536
I/O Discrete 0 through 83,886,080 0
I/O Non-Discrete 0 through 5,242,880. 0
Total Symbolic 0 — 42,088,704 bytes
(This is the total memory available for the combined total of
symbolic memory. This also includes other user memory use,
program etc.)
143360
3.3.1 %G User References and CPU Memory Locations
The CPU contains one data space for all of the global data references (%G). The internal CPU memory
for this data is 7680 bits long. For Series 90-70 systems, the programming software subdivides this
range using %G, %GA, %GB, %GC, %GD, and %GE prefixes
— allowing each of these prefixes to be
used with bit offsets in the range 1 – 1280. For PACSystems, these ranges are converted to %G.