Sony DX4 - Manual (Page 49)

AR-B1474 User¡ ¦s Guide
5-11
CAUTION: It is not recommended that the user formatted the disk and copy files to the FLASH disk very often.
Since the FLASH EPROM’ s write cycle life time is about 10,000 or 100,000 times, writing data to the
FLASH too often will reduce the life time of the FLASH EPROM chips, especially the FLASH EPROM
chip in the MEM1 socket.
5.4.4 RAM Disk
(1) Jumper Setting
Step 1: Use jumper block to set the memory type as ROM (FLASH).
Step 2: Select the proper I/O base port, firmware address, disk drive number on SW1.
Step 3: Insert programmed SRAM chips into sockets starting at MEM1.
NOTE: If you use the SRAM, please skip the SW1-7 & SW1-8 setting.
SRAM
M1, M2 & M4
1
2
3
A B C
1 2 3
JP5
Figure 5-11 SRAM Jumper Setting
(2) Software Programming
It is very easy to use the RAM disk. The RAM disk operates just like a normal floppy disk. A newly installed RAM
disk needs to be formatted before files can be copied to it. Use the DOS command [FORMAT] to format the RAM
disk.
Step 1: Use jumper block to select the memory type as SRAM refer.
Step 2: Select the proper I/O base port, firmware address and disk drive number on SW1.
Step 3: Insert SRAM chips into sockets starting from MEM1
Step 4: Turn on power and boot DOS from hard disk drive or floppy disk drive.
Step 5: Use the DOS command [FORMAT] to format the RAM disk. If you are installing SRAM for the first
time.
To format the RAM disk and copy DOS system files onto the RAM disk.
C:\>FORMAT [RAM disk letter] /S /U
To format the RAM disk without copying DOS system files into the RAM disk.
C:\>FORMAT [RAM disk letter] /U
Step 6: Use the DOS command [COPY] to copy files onto the RAM disk. For example, if you want to copy file
<EDIT.EXE> to the RAM disk from drive C: and the RAM disk is assigned as drive A:.
COPY C:EDIT.EXE A:
NOTE: In addition, you can use any other DOS command to operate the RAM disk.