Perstor Systems PS180-16F ARLL Controller
(Refer to the Printed Circuit Board)
  • J1: Floppy Drive Connector.
  • J3: Hard Drive #1 Data Connector.
  • J4: Hard Drive #0 Data Connector.
  • J5: Hard Drive Control Connector.
  • J6: Hard Drive Activity Light Connector.
  • J7: Aux. Hard Drive Power Connector.
    • Default settings are in Bold or are selected by a .

    JMP1: BIOS ROM Settings

    (1/2): BIOS Enable
  • Jumpered to Enable the BIOS.
  • Open to Disable the BIOS.
    • (9/10): BIOS Address
  • Jumpered for C800:0.
  • Open for D800:0 (For use with 16-bit VGA cards)

    • JMP4: Floppy Drive Address

  • 1/2: for Primary/Enable (3F0-3F7).
  • 2/3: for Secondary/Disable (370-377).

    • JMP13: Floppy Support (In conjunction with JMP4)

  • 1/2: to Enable.
  • 2/3: to Disable.

    • JMP8: Hard Drive Address

  • 1/2: for Primary (1F0-1F7).
  • 2/3: for Secondary (170-177).

    • The PS180-16FN used Advanced RLL recording techniques to allow it to format a drive with 31 sectors per track. Though Perstor claimed a 1:1 interleave, the PS180-16FN generally worked best with a 2:1, or 3:1 interleave, defeating some of it's speed claims. However, the increase in sectors per track from the standard 17 (MFM) or 26 (RLL) did allow a reasonable increase in disk size for the cost. (Considering that hard drives cost $10+/MB at the time.)
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