Adaptec ACB-2072 RLL Controller
View of Controller board.
Connectors
  • J1: Hard Drive Control Connector
  • J2: Hard Drive #0 Data Connector
  • J3: Hard Drive #1 Data Connector

    • Jumper Sets

  • J4: BD, 234, W/X, U/V
  • J5: A/B, C/D, E/F, G/H, I/J, K/L
  • J6: M/N, O/P, Q/R, S/T

    • Default settings are in Bold or are selected by a .
    J6: Drive Selection Options

    BIOS Drive Table Types
    Entry Capacity Heads Cylinders
    Type 0 30MB 4 612
    Type 1 15MB 2 612
    Type 2 60MB 5 981
    Type 3 30MB 4 615

    Drive Table Selection
    Jumpers Type 0 Type 1 Type 2 Type 3
    HD#0 M/N On On Off Off
    O/P On Off On Off
    HD#1 Q/R On On Off Off
    S/T On Off On Off

    J5: High Performance Jumpers
    A/B Syquest Removable Drive on HD#0
    C/D Syquest Removable Drive on HD#1
    E/F Reserved
    G/H Reserved
    I/J Reserved
    K/L Enable Self Diagnostics

    J4: BIOS Address
    BD Disable BIOS
    234 Select Alt. Address
    C800 CA00 CC00 F400
    U/V Off On On Off
    W/X Off Off On On

    The ACB-2072 has a Low Level Formatter routine built into it's BIOS, and accessible through the Debug command at offset :ccc (ie: g=c800:ccc). The actual routine is covered in depth in the "paper" version of TheRef(tm).
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