Vga Jumpers (J3, J5); Irq12 Jumper (J8) - Xycom XVME-678 Manual

Chapter 2 - Installation
Table 2-1. XVME-678/688 Jumper Options
Jwnper Position Function Section Reference
11 A.t Sets EPROM or Flash RAM to non-writable + 5V 2.2.2
B Sets Flash RAM to + 12V
12 A.t Enables battery 2.2.4
B Disables battery
13 A.t IRQ9 is driven by VGA controller 2.2.1
B IRQ9 is not driven by the VGA controller
J4
A.t
Test jumper that supplies V cc to OSC 2.2.4
B Test jumper that disconnects V cc from OSC
J5 A.t Enables VGA
2.2.1
B Disables VGA
J8
A.t
IRQ12 driven for auxiliary port 2.2.3
B IRQ12 not driven for auxiliary port
.t indicates default settings
2.2.1
VGA Jwnpers (J3, J5)
Jumper J5 enables the VGA BIOS and Xycom Setup when positioned to A (default) or disables the VGA
BIOS and XYCOM Setup when positioned to B.
Jumper 13 should be set to A (default) for IRQ9 to be driven by the VGA, or to B for IRQ9 not to be
driven by the VGA.
2.2.2
EPROM/Flash Jwnper (Jl)
Jumper
11
sets EPROM and Flash RAM devices to a non-writable +5V when positioned to A (default).
When positioned to B,
11
sets Flash RAM devices to + 12V.
2.2.3
IRQ12 Jwnper (J8)
Jumper J8 allows the PS/2 auxiliary port to drive IRQ12 when positioned to A (default). When positioned
to B, the PS/2 port does not drive IRQI2.
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