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501-1199



4/1xx CPU VME 8M w/o FPU

 14.28MHz MB86900, Weitek 1164/1165 (if installed), Sun-4 MMU with 16 hardware
  contexts.  VME bus interface (although busmaster cards are not supported, and
  there are hints that only 28 bits of address are supported).  P4 connector
  for framebuffer.

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

 Memory consists of four banks of eight static-column 120ns SIMMs, either 256K
  (501-1314) or 1M (501-1466). Valid memory combinations are 8M (all banks
  256K), 16M (two banks of 1M), 20M (two banks of 1M and two banks of 1M), or
  32M (all banks 1M).

  Nearest VME connectors
   _______     _______
  |       |   |       |
  |   3   |   |   4   |             Banks have eight SIMM slots
  | U1516 |   | U1616 |             each.
  |_______|   |_______|   J400

   _______     _______              Note: when using mixed SIMMs
  |       |   |       | J1400       to get 20M, the 1M SIMMs must
  |   1   |   |   2   |             go in banks 2 and 4 or the
  | U1500 |   | U1600 | J1300       machine won't boot.
  |_______|   |_______|

   J101 1-2 (not revelant to memory)
   J100 1-2
        3-4

  Total memory:           8M      16M     20M     32M
  SIMM size:              256K    1M      256K/1M 1M

  J100    Cache line

   1-2                   JU      UN      JU      UN
   3-4                   UN      JU      UN      JU

  J400    Memory strobe configuration (pin 1 farthest)

   1-2                   UN      JU      UN      JU
   3-4                   JU      UN      UN      JU
   5-6                   JU      JU      JU      UN

  J1300   SIMM addressing mode (pin 1 farthest)

   1-2   same            JU      UN      UN      JU
   3-4   different       UN      JU      JU      UN
   5-6   256K            JU      UN      JU      UN
   7-8   1M              UN      JU      UN      JU
   9-10  2M              UN      UN      UN      UN
   11-12 <32M            JU      JU      JU      UN
   13-14 32M             UN      UN      UN      JU
   15-16 unused          UN      UN      UN      UN

  J1400   SIMM addressing mode (pin 1 farthest)

   1-2   same            JU      UN      UN      JU
   3-4   different       UN      JU      JU      UN
   5-6   256K            JU      UN      UN      UN
   7-8   1M              UN      JU      JU      JU
   9-10  2M              UN      UN      UN      UN
   11-12 <32M            JU      JU      JU      UN
   13-14 32M             UN      UN      UN      JU
   15-16 unused          UN      UN      UN      UN

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

  J101 (single jumper, see diagram)

   Jump to enable 57.1MHz clock                          JUMPED

  J600 (block toward far right, pin 1 farthest)

   1-2   27512 boot PROMs                                JUMPED
   3-4   27256 boot PROMs                                UNJUMPED

  J700 (block in center, pin 1 at left)

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

  J800 (single jumper in near middle)

   Force reset.

  J900 (single jumper toward far right, by battery)

   Short 3V battery. (Erase EEPROM?)                     UNJUMPED

  J1000 (single jumper in middle right)

   Enable UART clock.                                    JUMPED

  J1700 (single jumper toward near right)

   Enable Ethernet clock.                                JUMPED

  J1701 (single jumper in near middle)

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

  J1800 (single jumper in near middle)

   Jump for AUI Ethernet, unjump for thin Ethernet/autosense.  (? -- no BNC
    connector shown on diagram!)

  J1900 (block in center, pin 1 at left)

   1-2   CPU is VME requester only                       UNJUMPED
   3-4   CPU is VME requester                            JUMPED

  J1901 (block in center, pin 1 at left)

   1-2   CPU is VME reset slave                          UNJUMPED
   3-4   CPU is VME reset master                         JUMPED

  P2101 (single jumper toward far right)

   Jump to enable VME system clock.                      JUMPED

  VJMP2-VJMP9

   Unknown.

 Additional features of interest: the boot PROMs are in the far right corner at
  locations U601-U604 (1651-1654 respectively).  Nearby, along the right edge,
  is a 3V battery.  The P4 connector is in the middle right, by the divider.
  The IDPROM is nearer, at location U805. The keyboard fuse F1000 is near the
  keyboard connector at grid C2 and the Ethernet fuse F1800 is near the
  Ethernet connector at grid F2.

 Note that 501-1199 boards must be 501-1199-11 or later, and 501-1237 boards
  501-1237-11 or later to use a type-4 keyboard.

 Note that the 501-1384 FPU2 is supported only on 501-1512, 501-1513, 501-1514,
  501-1515, 501-1516, 501-1517.

 Note that for the Ethernet autosense to operate, more than 30mA must be
  present on the +12V return.

 Note that boot ROM version 3.0 or later is required to use the P4 cgsix color
  framebuffer (501-1374/1505/1532) as the console.

 Power requirements (with FPU) are +5V @ 13.8A and -5V @ 0.1A.

  




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