Xycom XVME-654, Manual

Page: 17 / 98

Chapter 1 – Introduction
2-3
Register 219h – LED/BIOS Port
Table Chapter 2 -4 describes the LEDs and signals that register 219 controls.
Table Chapter 2 -4. LED/BIOS Port
Bit LED/Signal Result R/W
0 FAULT 1 = Fault LED off
0 = Fault LED on R/W
1 PASS 1 = PASS LED on
0 = PASS LED off R/W
2 FLB_A18_EN 1 = Flash write and enable FLB_A18 R/W
3 FLB-A18 Flash bit for address A18 of Flash BIOS when FLB_A18_EN equals 1 R/W
4 Reserved 0 R
5 Reserved 0 R
6 Reserved 0 R
7 Reserved 0 R
Register 218h – Abort/CMOS Clear/VGA Enable Port
This register controls the abort toggle switch. It also allows you to read the CMOS clear
switch and VGA enable.
Table Chapter 2 -5. Register 218h Settings
Bit Signal Result R/W
0 Reserved 0 R
1 Reserved 0 R
2 Reserved 0 R
3 Reserved 0 R
4 ABORT_STS 1 = Abort toggle switch caused interrupt R
5 ABORT_CLR 1 = Enable abort
0 = Clear and disable abort R/W
6 VGA_EN 1 = On-board VGA controller enabled R
7 CLRCMOS 1 = CMOS okay
0 = Clear CMOS R
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