DIGITAL-LOGIC Microspace MSM586SEN Technical User Manual page 159

DIGITAL-LOGIC AG
CMOS Map
Continued...
Location Description
14h Equipment
bits 7-6 = Number of Diskette Drives
bits 5-4 = Primary Display Type
bits 3-2 = Reserved
bit 1
bit 0
15h Base Memory Size (in KB) – Low Byte
16h Base Memory Size (in KB) – High Byte
17h Extended Memory Size in (KB) – Low Byte
18h Extended Memory Size (in KB) – High Byte
19h Extended Drive Type – Hard Drive 0
See the Fixed Drive Type Parameters Table in Chapter 2 for infor-
mation on drive types 16-44.
1Ah Extended Drive Type – Hard Drive 1
See the Fixed Drive Type Parameters Table in Chapter 2 for infor-
mation on drive types 16-44.
1Bh Custom and Fixed (Hard) Drive Flags
bits 7-6 = Reserved
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
Continued...
00 = One diskette drive
01 = Two diskette drives
10, 11 = Reserved
00 = Adapter with option ROM
01 = CGA in 40 column mode
10 = CGA in 80 column mode
11 = Monochrome
= Math Coprocessor Presence
0 =
1 =
= Bootable Diskette Drive
0 =
1 =
= Internal Floppy Diskette Controller
0 =
1 =
= Internal IDE Controller
0 =
1 =
= Hard Drive 0 Custom Flag
0 =
1 =
= Hard Drive 0 IDE Flag
0 =
1 =
= Hard Drive 1 Custom Flag
0 =
1 =
= Hard Drive 1 IDE Flag
0 =
1 =
MSM586SEN/SEV Manual V1.5E
Not installed
Installed
Not installed
Installed
Disabled
Enabled
Disabled
Enabled
Disable
Enabled
Disable
Enabled
Disable
Enabled
Disable
Enabled
43