Jumper Locations On The Board; The Jumpers On This Microspace Product - DIGITAL-LOGIC MICROSPACE PC/104 Technical User's Manual

DIGITAL-LOGIC AG
6 J
UMPER
The figure shows the location of all jumper blocks on the MSM486V board. The numbers shown in this
figure are silk screened on the board so that the pins can easily be located. This chapter refers to the
individual pins for these jumpers. The default jumper settings are indicated with asterisks. Be careful
when you change some jumpers. All jumpers are soldering bridges, you need a miniature soldering
station with vacuum pump.
6.1

The Jumpers on this MICROSPACE Product

Micro-Floppy Drive (26pin Molex):
Jumper: J18:
Function: Motor
Drive B: 1-2
Drive A: 2-3
* = default factory settings
Jumper Functions
J2
Reset of RTC/CMOS RAM (Jumper Pin) open = normal
J18
yFloppy Motorselect
J19 yFloppy Driveselect
J21 LCD Signal DE
J28
Keyboard Mode
J29
Keyboard Mode
J30 Keyboard Mode
J31 PS/2 Mouse Interrupt 12
J38/J39
VGA - Multi BIOS Select
LCD-BIOS0
LCD-BIOS1
LCD-BIOS2
LCD-BIOS3
J42
Watchdog Source Clock (only 2.xx)
J48 Power Supply for RAM
J49 Power Supply for RAM
J50 Keyboard inhibit
J51
Color select
J51 Color/Mono switch
J52 General Switch input Bit 2
J53 General Switch input Bit 1
J54
SSD Adress 15 (only 2.xx)
J55 CPU 5V or 3,3V
J56 CPU 5V or 3,3V
L
OCATIONS ON THE
J19:
Drive
1-2
2-3
41
MSM486V Manual V3.22
B
OARD
Pins
1 - 2 = Motor 0 (A:)*
1 - 2 = Drive 0 (A:)*
1 - 2 = LP
closed = PS/2 *
1 - 2 = PS/2
1 - 2 = PS/2
closed = PS/2 mouse
IRQ12 used
J38
0
1
0
1 *
1-2 = SA0*(V3.x fix)
1= VCC , 2 = GND
1= VCC , 2 = GND
open *
open *
open *
1-2 = GND *
1-2 = GND *
1-2 = SA15 on SSD
Device
open = 5V CPU
1-2 = 5V CPU
Pins
closed = RESET
2 - 3 = Motor 1 (B:)
2 - 3 = Drive 1 (B:)
2 - 3 = M
open = AT
2 - 3 = AT *
2 - 3 = AT *
open = no mouse
IRQ12 is free
J39:
0
0
1
1 *
2-3 = ROMCS
not used
not used
not used
2-3 = VCC
2-3 = VCC
2-3 = FA15 on SSD
Device
closed = 3,3V CPU
*
2-3 = 3,3V CPU *