GESPAC
======

   GESSIO-12

   Card Type           Serial controller                          
   I/O Options         serial ports (4)                           
   Data Bus            Proprietary                                
   Card Size           Half-length, half-height card              

<gopher://bitreich.org/I/th99/i/E-H/54646-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |        Function        | Label |     Function      | Label |
   |------------------------+-------+-------------------+-------|
   | G-64/G-96 bus          |  P1   | DUART 2 channel A |  P4   |
   | interface              |       |                   |       |
   |------------------------+-------+-------------------+-------|
   | DUART 1 channel A      |  P2   | DUART 2 channel B |  P5   |
   |------------------------+-------+-------------------+-------|
   | DUART 1 channel B      |  P3   |                   |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                 | Label | Position |
   |-----------------------------------------+-------+----------|
   | Single level of vectored interrupt      | J2/A  |  Closed  |
   |-----------------------------------------+-------+----------|
   | Multi level of vectored interrupt       | J2/A  |   Open   |
   |-----------------------------------------+-------+----------|
   | IPL0 MSB-interrupt priority level       | J2/B  |  Closed  |
   | enabled                                 |       |          |
   |-----------------------------------------+-------+----------|
   | IPL0 MSB-interrupt priority level       | J2/B  |   Open   |
   | disabled                                |       |          |
   |-----------------------------------------+-------+----------|
   | IPL1 MSB-interrupt priority level       | J2/C  |  Closed  |
   | enabled                                 |       |          |
   |-----------------------------------------+-------+----------|
   | IPL1 MSB-interrupt priority level       | J2/C  |   Open   |
   | disabled                                |       |          |
   |-----------------------------------------+-------+----------|
   | IPL2 LSB-interrupt priority level       | J2/D  |  Closed  |
   | enabled                                 |       |          |
   |-----------------------------------------+-------+----------|
   | IPL2 LSB-interrupt priority level       | J2/D  |   Open   |
   | disabled                                |       |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     ADDRESS SELECTION                      |
   |------------------------------------------------------------|
   |Address |  J4/A  |  J4/B  |  J4/C  |  J4/D  | J4/E  | J4/F  |
   |--------+--------+--------+--------+--------+-------+-------|
   |   A4   |  Open  |  Open  |  Open  |  Open  | Open  |Closed |
   |--------+--------+--------+--------+--------+-------+-------|
   |   A5   |  Open  |  Open  |  Open  |  Open  |Closed | Open  |
   |--------+--------+--------+--------+--------+-------+-------|
   |   A6   |  Open  |  Open  |  Open  | Closed | Open  | Open  |
   |--------+--------+--------+--------+--------+-------+-------|
   |   A7   |  Open  |  Open  | Closed |  Open  | Open  | Open  |
   |--------+--------+--------+--------+--------+-------+-------|
   |   A8   |  Open  | Closed |  Open  |  Open  | Open  | Open  |
   |--------+--------+--------+--------+--------+-------+-------|
   |   A9   | Closed |  Open  |  Open  |  Open  | Open  | Open  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    INTERRUPT SELECTION                     |
   |------------------------------------------------------------|
   | IRQ  |  J3/A  |  J3/B  |  J3/C  |  J3/D  |  J3/E  |  J3/F  |
   |------+--------+--------+--------+--------+--------+--------|
   |  1   |  Open  |  Open  |  Open  |  Open  | Closed |  Open  |
   |------+--------+--------+--------+--------+--------+--------|
   |  2   |  Open  |  Open  |  Open  | Closed |  Open  |  Open  |
   |------+--------+--------+--------+--------+--------+--------|
   |  3   |  Open  |  Open  | Closed |  Open  |  Open  |  Open  |
   |------+--------+--------+--------+--------+--------+--------|
   |  4   |  Open  | Closed |  Open  |  Open  |  Open  |  Open  |
   |------+--------+--------+--------+--------+--------+--------|
   |  5   | Closed |  Open  |  Open  |  Open  |  Open  |  Open  |
   |------+--------+--------+--------+--------+--------+--------|
   | NMI  |  Open  |  Open  |  Open  |  Open  |  Open  | Closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     INTERRUPT PRIORITY                     |
   |------------------------------------------------------------|
   |         Priority          |     J1/A      |      J1/B      |
   |---------------------------+---------------+----------------|
   | DUART 1 high; DUART 2 low |     Open      |     Closed     |
   |---------------------------+---------------+----------------|
   | DUART 1 low; DUART 2 high |     Open      |      Open      |
   +------------------------------------------------------------+