Manual

VM62(A) / VM42(A) User’s Manual Chapter 4 Memory Piggybacks

4. MEMORY PIGGYBACKS

4.1 DM600

4.1.1 Configuration

The DM600 is a memory piggyback fitted with 4MByte DRAM and either 1 or 4MByte Flash EPROM. Two

configurable jumpers are present on the board, indicating if write protection is enabled or disabled and whether 1MBit or

4MBit Flash EPROM chips are fitted.

Figure 4.1.1.1: DM600 Jumper Layout (Component Side)

432

Flash

Bank 0

Bank 1

Jumper J1: FLASH Write Protection

Setting Description 1 MB Flash

(29F010)

4 MB Flash

(29F040)

Open All Flash EPROM write protected

1-2 No protection Default

1-3 Flash bank 1 write protected upper 512 kB

($40080000 -

$40100000)

upper 2 MB

($40200000 -

$40400000)

1-4 Flash bank 0 write protected lower 512 kB

($40000000 -

$40080000)

lower 2 MB

($40000000 -

$40200000)