Manual

VM62(A) / VM42(A) User’s Manual Chapter 3 Configuration

3.2.1 Jumpers J3, J4 and J5: CPU (Bus) Clock

Setting

J3 J4 J5

Description

Set Set Open 25 MHz

Open Set Open 33.3 MHz

Set Open Open 40 MHz

3.2.2 Jumper J6: 24 MHz Clock (Communications Clock)

Setting Description

Set Clock connected to 68EN360 Default

Open Clock not connected to 68EN360

Note

Jumper J6 must be opened if the RCLK2 signal (CXM pin c16) is required, as it is not compatible

with PEP standard software.

3.2.3 Jumper J7: CPU Type

Setting Description

Set 68060 Processor

Open 68040 Processor

3.2.4 Jumper J10: Serial EEPROM Write Protection

Setting Description

Set Write protection enabled

Open Write protection disabled Default

3.2.5 Jumpers J11 and J12: SRAM Size

Setting

J11 J12

Description

1-2 1-2 1 MByte

1-3 1-3 256 kByte