Kontron MSM800SEL Bedienungsanleitung Seite 51

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MSM800SEV/SEL / Detailed System Description
www.kontron.com 49
Location Description
1Bh
Custom and Fixed (Hard) Drive Flags
Bits 7-6 = Reserved
Bit 5 = Internal Floppy Disk Controller
0 = Disabled
1 = Enabled
Bit 4 = Internal IDE Controller
0 = Disabled
1 = Enabled
Bit 3 = Hard Drive 0 Custom Flag
0 = Disabled
1 = Enabled
Bit 2 = Hard Drive 0 IDE Flag
0 = Disabled
1 = Enabled
Bit 1 = Hard Drive 1 Custom Flag
0 = Disabled
1 = Enabled
Bit 0 = Hard Drive 1 IDE Flag
0 = Disabled
1 = Enabled
1Ch Reserved
1Dh EMS Memory Size Low Byte
1Eh EMS Memory Size High Byte
1Fh - 24h
Custom Drive Table 0
These 6 Bytes (48 bits) contain the following data:
Cylinders 10bits range 0-1023
Landing Zone 10bits range 0-1023
Write Precompensation 10bits range 0-1023
Heads 08bits range 0-15
Sectors/Track 8bits range 0-254
1Fh
Byte 0
Bits 7-0 = Lower 8 bits of Cylinders
20h
Byte 1
Bits 7-2 = Lower 6 bits of Landing Zone
Bits 1-0 = Upper 2 bits of Cylinders
21h
Byte 2
Bits 7-4 = Lower 4 bits of Write Precompensation
Bits 3-0 = Upper 4 bits of Landing Zone
22h
Byte 3
Bits 7-6 = Reserved
Bits 5-0 = Upper 6 bits of Write Precompensation
23h
Byte 4
Bits 7-0 = Number of Heads
24h
Byte 5
Bits 7-0 = Sectors Per Track
25h - 2Ah
Custom Drive Table 1
These 6 Bytes (48 bits) contain the following data:
Cylinders 10bits range 0-1023
Landing Zone 10bits range 0-1023
Write Precompensation 10bits range 0-1023
Heads 08bits range 0-15
Sectors/Track 08bits range 0-254
25h
Byte 0
Bits 7-0 = Lower 8 bits of Cylinders
26h
Byte 1
Bits 7-2 = Lower 6 bits of Landing Zone
Bits 1-0 = Upper 2 bits of Cylinders
27h
Byte 2
Bits 7-4 = Lower 4 bits of Write Precompensation
Bits 3-0 = Upper 4 bits of Landing Zone
28h
Byte 3
Bits 7-6 = Reserved
Bits 5-0 = Upper 6 bits of Write Precompensation
29h
Byte 4
Bits 7-0 = Number of Heads
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