DIGITAL-LOGIC MICROSPACE MSM800SEV Technical User's Manual page 33

DIGITAL-LOGIC AG
CMOS Map
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Location Description
0Eh CMOS Location for Bad CMOS and Checksum Flags
bit 7
bit 6
0Fh Shutdown Code
10h Diskette Drives
bits 7-4 = Diskette Drive A
bits 3-0 = Diskette Drive B
11h Reserved
12h Fixed (Hard) Drives
bits 7-4 = Hard Drive 0, AT Type
bits 3-0 = Hard Drive 1, AT Type
See the Fixed Drive Type Parameters Table in Chapter 2 for infor-
mation on drive types 16-44.
13h Reserved
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= Flag for CMOS Lost Power
0 =
1 =
= Flag for CMOS checksum bad
0 =
1 =
0000 = Not installed
0001 = Drive A = 360 K
0010 = Drive A = 1.2 MB
0011 = Drive A = 720 K
0100 = Drive A = 1.44 MB
0101 = Drive A = 2.88 MB
0000 = Not installed
0001 = Drive B = 360 K
0010 = Drive B = 1.2 MB
0011 = Drive B = 720 K
0100 = Drive B = 1.44 MB
0101 = Drive B = 2.88 MB
0000 = Not installed
0001-1110 Types 1 - 14
1111 = Extended drive types
0000 = Not installed
0001-1110 Types 1 - 14
1111 = Extended drive types 16-44.
location 2Ah.
Power OK
Lost Power
Checksum is valid
Checksum is bad
16-44. See location 19h.
See
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MSM800 SEV Manual V1.0A