RTX-02B MULTI 8255 I/O CARD

1) FEATURES

* 8 x 8255: 192 PROGRAMMABLE I/O CONTROL LINES.

* 1 x 8253 : 3 INDEPENDENT 16 BIT COUNTER.

EACH WITH A COUNT RATE OF UP TO 10 MHz.

* 1 x 8259 (OR OPTIONAL): EIGHT-LEVEL PRIORITY CONTROLLER.

PROGRAMMABLE INTERRUPT MODES.

* BASE ADDRESS SELECTION : $2OO - $225, $24O - $265, $28O - $2A5,

$2CO - $2E5, $3OO - $325, $34O - $365,

$38O - $3A5, $3CO - $3E5, $6OO - $625,

$64O - $665, $68O - $6A5, $6CO - $6E5,

$7OO - $725, $740 - $765, $78O - $7A5.

* EXTERNAL I/O FORM : 1 SET 2 x 20 PIN HEADER.

4 SETS 2 x 25 PIN HEADER.

* INTERNAL/EXTERNAL CLOCK SELECT BY JUMPER.

* ALL PORTS CAN BE EN/DISABLE BY JUMPER.

* CLEAR PIN'S SIGNAL ON BOARD.

* " CE " APPROVAL.

Start: 1/18/2002 Update: 09.17.2009