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501-1381



4/4xx CPU VME

 33MHz CY7C601, TI8847 (?), MMU with 64 hardware contexts.  VME bus interface.
  P4 connector.

 From left to right, with component side up and connector edge toward you
  (normal top edge at left), the rear edge of the board has: two serial
  connectors (ports A and B from left to right (top/bottom)); a keyboard
  connector; an Ethernet connector; a switch to toggle between Normal and
  Diagnostic modes; eight LEDs (bit 0 to th left/top); and a reset switch.

 There are a variety of jumper blocks.  Locations below are given with
  component side up and connector edge toward you.

 J0100 (10-pin block in nearish center)

  Used for debug. All unjumped.

 J0101 (single jumper in rightish center)

  Used for ATE.                                         JUMPED

 J0201 (single jumper in middle near edge)

  Used for ATE.                                         JUMPED

 J0300 (block in near right corner, pin 1 nearest)

  1-2   jump if FPC is present                          JUMPED
  3-4   unjumped if FPC is present                      UNJUMPED
  5-6   avoid a trap when I-flush instruction executed  JUMPED
  7-8   FPC chaining (only if FPC present)              UNJUMPED

 J0705 (10-pin block in far right)

  Used for debug. All unjumped.

 J1901 (36-pin block in nearish right)

  Used for debug. All unjumped.

 J2301 (single jumper in middle far edge)

  Enable 33MHz system clock.                            JUMPED

 J2600 (single jumper in rightish far edge)

  Used for debug.                                       UNJUMPED

 J2801 (single jumper in farish left edge)

  Disable VME arbiter.                                  UNJUMPED

 J2802 (single jumper in farish left edge)

  Enable VME arbiter.                                   JUMPED

 J2803 (single jumper in farish left edge)

  Allow VME to reset CPU.                               UNJUMPED

 J2804 (single jumper in farish left edge)

  Allow CPU to reset VME.                               JUMPED

 J3100 (single jumper in left far edge)

  Enable VME loopback.                                  UNJUMPED

 J3200 (single jumper in middle left edge)

  Enable 16MHz Ethernet clock.                          JUMPED

 J3201 (single jumper in leftish center)

  Jump for type-1 Ethernet transceiver, unjump for type-2.

 J3203 (single jumper in far left)

  Provide VME clock.                                    JUMPED

 J3603 (three-pin jumper in near left corner, pin 1 nearest)

  1-2   RS-423 (-5V)                                    UNJUMPED
  2-3   RS-232 (-12V)                                   JUMPED

 J3604 (three-pin jumper in near left corner, pin 1 at right)

  1-2   RS-423 (+5V)                                    UNJUMPED
  2-3   RS-232 (+12V)                                   JUMPED

 J3701 (single jumper in near left)

  Jump to provide 4.9152MHz SCC clock.                  JUMPED

 J3703 (three pin jumper in middle near edge, pin 1 in middle?)

  1-2   Mouse TD enabled                                UNJUMPED
  2-3   Mouse TD grounded                               JUMPED

 J4000 (block in far left, pin 1 nearest)

  1-2   VME IRQ 1                                       JUMPED
  3-4   VME IRQ 2                                       JUMPED
  5-6   VME IRQ 3                                       JUMPED
  7-8   VME IRQ 4                                       JUMPED
  9-10  VME IRQ 5                                       JUMPED
  11-12 VME IRQ 6                                       JUMPED
  13-14 VME IRQ 7                                       JUMPED
  15-16 unused

 J4600 (single jumper in near left)

  Used for ATE.                                         JUMPED

 J4602 (single jumper in leftish center)

  Used for ATE.                                         JUMPED

 J4604 (single jumper in center)

  Used for ATE.                                         JUMPED

 J4605 (single jumper in left farish)

  Used for ATE.                                         JUMPED

 J4606 (single jumper in far right)

  Used for ATE.                                         JUMPED

 J4607 (single jumper in far leftish)

  Used for ATE.                                         JUMPED

 J4609 (single jumper in middle left edge)

  Used for ATE.                                         JUMPED

 Additional features of interest: the boot PROMs are in a row in the far right,
  U3501-U3504 from left to right (3-0 respectively).  The IDPROM is in the near
  right at location U1404.  The P4 connector is nearer than the boot PROMs.
  The NVRAM chip is in the near left, by the divider.  The keyboard fuse F3701
  is in the near left and the Ethernet fuse F3200 in the near middle.

 Note that pin 25 of the serial ports on the 501-1381 is -5V out.  Pin 25 of
  the serial ports on the 501-1899 is not connected.

 Note that the 501-1381 is not supported in the 4/470 serial numbers 136Kxxxx
  and greater.  This chassis has two 50-pin SCSI-2 connectors on the rear EMI
  cover.

 Note that boot PROM version 3.0 or later is required to support the 501-1721
  128M memory board.  Boot PROM version 4.1.1 or later is required when the
  501-1537(1538) VX(MVX) Visualization Accelerator is used as the console.

 Note that this board can use P4 cgeight framebuffer 501-1371-04 or later only.

 Note that SNC 1.2 for Solaris 1.1 requires 501-1381-01 or 501-1899-01.

 To provide circuit protection to the M+ and M- (+-12V) inputs on the UC5170
  serial port liner driver, install fused shunts 150-1669 at locations J3603
  and J3604.

 Power requirements are +5V @ 28.7A, +12V @ 0.1A, and -12V @ 0.1A.

  




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   Last modified: 2000.10.29.14.50.37 CST
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