User`s manual

DIGITAL-LOGIC AG MSMVGA Manual V1.0
14
6.1.5 Selection of the Flash Sector
(for using C800-CFFF, as alternate Flash-BIOS Memory, use the 64k-GAL. The standard
implementation is 32k-GAL!)
J18, J19 Selected Sector: J18 J19
Sector 1 (Default) open open
Sector 2 closed open
Sector 3 open closed
Sector 4 closed closed
6.1.6 VEE Generator supply
If there is an external 12V power supply at the PC/104 BUS PIN B9, switch the Jumpers J25 and J26
to 2-3. With 12V at the VEE generator the stability of the VEE range is improved. VEE Range -35V to
+35V.
Jumper Function PIN PIN
J25 VEE Generator supply 1-2 = 5V * 2-3 = 12V
J26 VEE Generator supply 1-2 = 5V * 2-3 = 12V
Default
6.1.7 Enable VEE Output at the J4
Pin 40 is selectable to output VEE supply or the P23
ATTENTION:
Select never the J27 to VEE-Output if a LCD is
connected with the digital P23 signal on the Pin 40
of the J4 (LCD-Outputconnector) !
The LCD will be destroyed immediately with the
overvoltage of the VEE generator !
Jumper Function
J8 N/A
J28 N/A
J29 N/A