NCR 7455 Hardware User's Manual page 94

3-20 Chapter 3: Setup
Enable Memory Gap
This option frees address space for use with an option card.
1. Move the cursor to Enable Memory Gap and press Enter.
2. Select the desired setting from the drop-down menu.
Disabled
Conventional
Extended
•
Disabled – does not turn system RAM off
•
Conventional – creates 128 K gap starting at 512 K
•
Extended – creates 1 MB gap starting at 15 MB
ECC Config
Use this option only if all memory in the system supports ECC (x72).
1. Move the cursor to ECC Config and press Enter.
2. Select the desired setting from the drop-down menu.
Disabled
EC
ECC
ECC Scrub
•
Disabled – all memory does not support ECC (x72)
•
EC – checking only
•
ECC – checking and correction
•
ECC Scrub – checking, correction with scrubbing