Acrosser AR-B1047 - Manual (Page 14)

AR-B1047 User’s Guide
2-7
2.4 MEMORY TYPE SETTING (M1, M2 & M3)
Before installing the memory into memory sockets MEM1 through MEM5, you have to configure the memory type,
which will be used (ROM/RAM) on the AR-B1047. You can configure the AR-B1047 as an EPROM (FLASH) disk
(ROM only), a SRAM disk (SRAM only) or a combination of EPROM (FLASH) and SRAM disk.
It is not necessary to insert memory chips into all of the sockets. The number of SRAM chips required depends on
your RAM disk capacity. The number of EPROM chips required depends on the total size of files that you plan to
copy onto the ROM disk and whether or not it will be bootable.
Insert the first memory chip into MEM1 if you are going to configure it as a ROM or SRAM disk. If you use a
combination of ROM and RAM, then insert the EPROM (FLASH) chip first from MEM1 and insert the SRAM from
the first socket is set as SRAM.
The M1 jumper block is used to configure the memory type of MEM1 and MEM2, M2 is for MEM3 and MEM4, M3
is for MEM5. Please refer to the following chart to select the correct memory type.
! M1: is used to configure the memory type of MEM1 & MEM2
! M2: is used to configure the memory type of MEM3 & MEM4
! M3: is used to configure the memory type of MEM5
CAUTION: When the power is turned off, please note the following precautions.
1. If your data has been stored in the SRAM disk, do not change the jumper position or data will be
lost.
2. Make sure jumpers are set properly. If you mistakenly set the jumpers for SRAM and you have
EPROM or FLASH installed, the EPROM or FLASH will drain the battery’s power.
3. If you want to use the 12V FLASH, please use the external 12V voltage, the AR-B1047 does not
support the 12V voltage.
M1, M2, & M3
EPROM (128KX8, 256KX8 and 512KX8)
5V/12V FLASH (64KX8, 128KX8 and 256KX8
(Factory Preset)
5V FLASH (512KX8 Only)
SRAM
M1, M2, & M3
M1, M2, & M3
1
2
3
A B C
1
2
3
A B C
1
2
3
A B C
M1, M2, & M3
1
2
3
A B C
1 2 3
JP1
1MX8 EPROM (Only)
4 5
1 2 3
JP1
4 5
1 2 3
JP1
4 5
1 2 3
JP1
4 5
Figure 2-9 M1~M3 & JP1-3~JP1-5: Memory Type Setting