AT&T PC 6300 - Page 596

APPENDIX A: SWITCHES AND JUMPERS
MOTHERBOARD (ROM 1.21 OR BELOW)
SWl SW2
SW3
SW4 SW5 SW6
SWT SW8
FUNCTION
1 X X
X X X X
X 48 TPI Floppy! s)
(360 KB)
0 X
X
X X X X
X 96 TPI Floppy! s)
(720 KB)
X 1
X
X X
X X
X
Slow start-up speed for
Floppy Drive
X 0
X
X
X
X X
X Fast start-up speed for
Floppy Drive
X X
1
X
X
X X
X
Indigenous HDU ROM
X X
0
X
X X
X
X
External HDU ROM *
X
X
X 1
X X
X X
Reserved for Future Use
X ■ X X
X 1
1 X
X
Reserved for Future Use
X
X X
X 0
1 X X
40 X 25 Color
X X X X 1 0
X X
80 X 25 Color
X X X X 0 0
X
X
80 X 25 Monochrome
X X
X X X X
1
' 1
I Floppy Drive
X X
X X
X X
0 1
2 Floppy Drives
X X
X
X X X
1 0
3 Floppy Drives
!2 Maximum)
X' X
X X
X X 0
0
4 Floppy Drives
!2 Maximum)
• If external ROM is not present, HDU will not be recognized.
ON=CLOSED=l
OFF=OPEN=0
NO SETTING REQUIRED=X
Figure A-7. Switch Settings for DIPSW-1 (ROM 1.21 or
Below)
H-
0
0
n
n
n
n
n
n
0
0
n
0
n
A-14
0
a
n
n