User manual

Controller Orientatifon

Extra Register Model

When used in the Extra Register configuration,There are a number of possible

configurations of the PC- L984-785 FLC memory (see Table 3). The size of the

State RAM is selectable at 32k or 64k words. The user logic, Execution Buffer and

Extended Memory (6X reference) is determined by the size of the RAM cartridge

you install and the selected state RAW.

Hardware

The PC-L984-785 uses the same 80 186 CPU as the 984-785 but has a different

UPI and has an extended RAM cartridile of 256K(-032) or 512K bytes(-048) in-

cluded, giving a total of 512K or 768K bytes of RAM. Figure

illustrates the com-

bination of “plug in” executive and memory cartridges you install.

I?3

Note

When used in the E:ctra Register configuration, an

AS-S908-131 (at minimun- revision 1005) Executive MUST be in-

stalled in the S908 remote l/O Processor

The following table shows how this RAM partitions in each configuration:

Table 3

Memory Utilization

64K State 32K State

512K RAM 768K RAM 512K RAM 768K RAM

User

Logic

words

Execution Buffer

bytes

Extended Memory words

16k

16CIk

72k

32k

320k

32k

320k

96k

46k

480k

24k

installation

GM-L984-785 Chapter 2