Rockwell Automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User Manual User Manual
Page 41
Chapter 3
Getting Started with the Control Coprocessor
3-12
RAM Disk
The RAM disk is an emulated drive that resides in Random Access
Memory (RAM). You can store and access any files on a RAM disk. The
default size of the non-volatile RAM disk is 64 Kbytes.
ATTENTION: Changing the size of the non-volatile RAM
disk will reformat it. Back up the disk data before changing the
RAM-disk size.
To configure the non-volatile RAM disk:
1.
At the
Select
Option
prompt, enter
1
for the non-volatile
RAM-disk configuration option. See Figure 3.13.
Figure 3.13
Configure the RAM Disk
Select Option: 1
Original Current
Settings Settings
-----------------------------------------------------------
Non-Volatile RAM Disk = 64Kb 64Kb
Non-Volatile User Memory = 0Kb 0Kb
Non-Volatile Module Memory = 0Kb 0Kb
OS-9 Free Pool = 4800Kb 4800Kb
---------- ----------
Configurable System Memory = 4864Kb 4864Kb
Non-Volatile RAM Disk Size
--------------------------
Enter desired number of 64K (65536) byte blocks for disk (1- 76): 8
Original Current
Settings Settings
---------------------------------------------------------- -
Non-Volatile RAM Disk = 64Kb 512Kb
Non-Volatile User Memory = 0Kb 0Kb
Non-Volatile Module Memory = 0Kb 0Kb
OS-9 Free Pool = 4800Kb 4352Kb
---------- ----------
Configurable System Memory = 4864Kb 4864Kb
PCBridge Microware’s PC hosted OS-9/680x0 Development System
2.
At the prompt, enter the number of blocks—between 1 and the
maximum amount as shown by the utility—that you want to allocate
to the RAM-disk size.