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501-1074



3004 "Carrera" CPU VME 2M (3/75/140/150/160/180)

 16.67MHz 68020, 68881, Sun-3 MMU with eight hardware contexts, up to 4M of
  onboard memory (depending on model). VME bus interface.

 From left to right with component side up and connector edge toward you
  (normal top edge at left), the rear edge has: a female DB15 AUI Ethernet
  connector; eight LEDs (bit 0 to the top/left); a switch to toggle between
  Normal and Diagnostics modes; a reset switch; a female DB9 monochrome video
  connector; a female DB15 keyboard/mouse connector; and two female DB25
  serial port connectors (ports A and B from left to right (top/bottom)).

 Pin 1 is usually in the upper right corner of all connectors.  Unconnected
  pins are not listed.

 Jumpers J2501, J2503, and J2505 relate to Ethernet.  The pinout of the AUI
  Ethernet connector is:

  2   E.COL+              9   E.COL-
  3   E.TxD+              10  E.TxD-
  5   E.RxD+              12  E.RxD-
  6   GND                 13  +12V
  7   VCC (see J2503)

 The eight LEDs are used for diagnostic purposes.

 If you want the machine to boot normally, set the diagnostics switch to "NORM"
  (labelled "BOOT" on some early versions).  If you want extended diagnostics
  when you power up the system, set the switch to the "DIAG" position.  If the
  switch is set to "DIAG", power-on self-test messages are sent to serial port
  A.

 The user reset button invokes a watchdog reset.  The result depends on the
  value at address 0x17 of the EEPROM. (?)

 The monochrome video output levels are ECL/TTL, with a resolution of
  1152 x 900 at 61.8KHz horizontal sync and 66Hz vertical sync.  The pinout of
  the monochrome video connector is:

  1   VIDEO+              6   VIDEO-
  3   HSYNC               7   GND
  4   VSYNC               8   GND
                          9   GND

 The pinout of the keyboard/mouse connector is:

  1   RxD0 (keyboard)     8   GND
  2   GND                 9   GND
  3   TxD0 (keyboard)     10  VCC
  4   GND                 11  VCC
  5   RxD1 (mouse)        12  VCC
  6   GND                 14  VCC
  7   TxD1 (mouse)        15  VCC

 The serial ports conform to both RS-232-C and RS-423 and are wired DTE.  The
  documented maximum speeds are 19200 bps for output and 9600 bps for input.
  The pinout of the serial ports is:

  2   TxD (transmit data)     8   DCD   (Data Carrier Detect)
  3   RxD (receive data)      15  DB    (transmit clock from DCE)
  4   RTS (Request To Send)   17  DD    (receive clock from DCE)
  5   CTS (Clear To Send)     20  DTR   (Data Terminal Ready)
  6   DSR (Data Set Ready)    24  DA    (transmit clock from DTE)
  7   GND                     25  VERR  (-5V)

 The DB, DD, and DA signals are not used with ordinary asynchronous equipment
  such as most modems and terminals, printers, etc.).

 There are a variety of jumper blocks, many of which (oddly) have separate
  designations for each pair of pins.  Locations below are given with component
  side up and connector edge toward you.

 J100 (pins 5-6 of a block on the left side, beyond the 68881) "Cache disable".
  Normally unjumped.

 J300 (block in far left corner, pin 1 nearest)

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

 J400 (block toward far left corner, pin 1 nearest)

  1-2       16.67MHz CPU clock                          JUMPED
  3-4       12.5MHz CPU clock                           UNJUMPED
  5-6       12.5MHz FPU clock                           UNJUMPED
  7-8       16.67MHz FPU clock                          JUMPED

 J1001 (single jumper in middle right)
  Jump to enable SCC clock.                             JUMPED

 J1200 (pins 4-5 of block in near left corner)
  Jump for 27256 boot PROMs.                            UNJUMPED

 J1201 (pins 5-6 of block in near left corner)
  Jump for 27512 boot PROMs.                            JUMPED

 J2301 (single jumper in near middle, to right of divider)
  Jump to enable video clock.                           JUMPED

 J2501 (pins 1-2 of block in near left)
  Jump to enable Ethernet clock.                        JUMPED

 J2502 (pins 1-2 of block in near left corner)
  Jump to enable VME clock.                             JUMPED

 J2503 (pins 3-4 of block in near left)
  Jump to put VCC on pin 7 of AUI Ethernet.             UNJUMPED

 J2505 (pins 7-8 of a block on the left side, beyond the 68881)
  Jump for a type-1 Ethernet transceiver, unjump for a type-2.

 J2700-J2703 (block in far left, pin 1 nearest)

  1-2       J2703, jump to enable VME reset master      JUMPED
  3-4       J2702, jump to enable VME reset slave       UNJUMPED
  5-6       J2701, jump to enable VME request/arbiter   JUMPED
  7-8       J2700, jump to enable VME request only      UNJUMPED

 J3101 (pins 1-2 of block on the left side, beyond the 68881)
  Jump for 2M CPU.

 J3102 (pins 3-4 of block on the left side, beyond the 68881)
  Jump for 4M CPU.

 Additional features of interest: the boot PROM is on the near left side at
  location U1200 (grid C5).  The IDPROM is catty-corner from the boot PROM at
  location U1409 (grid B10).  The keyboard fuse is by the reset switch at grid
  A10.  The Ethernet fuse is in the middle of the right edge, near J1001, at
  grid E34.

 Note that boot PROM version 1.8 is required to boot from a QIC-24 tape.  Boot
  PROM version 2.6 is required to boot from a QIC-24 tape in a Sun-2 shoebox.
  Boot PROM version 2.6 is also required to boot from an SMD disk attached to a
  Xylogics 7053 SMD controller.

 Note that in order to use a VME 32-bit data device (e.g. MCP, HSI, ALM-2, SCA,
  or "Sun-3" SCSI (?)), the CPU revision must be 501-1074-22, 501-1094-22,
  501-1163-09, 501-1164-09, or later.

 Power requirements are +5V @ 14/14.6A (2M/4M), -5V @ 0.8A.

  




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