DIGITAL-LOGIC Microspace MSM586SEN - Page 57

DIGITAL-LOGIC AG MSM586SEN/SEV Manual V1.5E
57
I/O Ad-
dress
Read/Write
Status
Description
0173h R / W Sector number for hard disk 1
0174h R / W Number of cylinders (low byte) for hard drive 1
0175h R / W Number of cylinders (high byte) for hard drive 1
0716h R / W Drive/head register for hard drive 1
0177h R Status register for hard drive 1
0177h W Command register for hard drive 1
01F0h R / W Data register base port for hard drive 0
01F1h R Error register for hard drive 0
Diagnostic mode
bits 7-3 = Reserved
bits 2-0 = Errors
0001 No errors
0010 Controller error
0011 Sector buffer error
0100 ECC device error
0101 Control processor error
Operation mode
bit 7 = Block
0 Bad block
1 Block not bad
bit 6 = Error
0 No error
1 Uncorrectable ECC error
bit 5 = Reserved
bit 4 = ID
0 ID located
1 ID not located
bit 3 = Reserved
bit 2 = Command
0 Completed
1 Not completed
bit 1 = Track 000
0 Not found
1 Found
bit 0 = DRAM
0 Not found
1 Found (CP-3022 always 0)
01F1h W Write precomposition register for hard drive 0
01F2h R / W Sector count for hard disk 0
01F3h R / W Sector number for hard drive 0
01F4h R / W Number of cylinders (low byte) for hard drive 0
01F5h R / W Number of cylinders (high byte) for hard drive 0
Continued...