AB-740G IDE MULTI I/O                       +--
+-----------+                                            ===============-++SER
¦   PORTS   ¦    +---------------------------------------||||-----------+¦¦9
¦ IDE   CN1 ¦    ¦ 1::::::::::::::::::         1:::::   1::::  1::::    +¦¦PIN
¦ FDC   CN2 ¦    ¦      CN1                     CN3       CN5   CN6     +++CONN
¦ LED   J1  ¦    ¦ 1:   J1+ -                                           ¦¦
¦S1     CN5 ¦    ¦ ::         +----------+                              +++
¦S2     CN6 ¦    C ::         ¦HM83740   ¦     J10  J11 J12          CN8¦¦¦LPT
¦ LPT   CN8 ¦    N ::         +----------+      |JJJJ|JJJ|J             ¦¦¦
¦ GAME  CN3 ¦    2 ::                           |8673|294|5             +¦¦
+-----------+    ¦ ::                           ...........             +¦¦
                 ¦ ::                           ::::::::::¨             ¦¦¦
                 +----+                  +-+ ...J13                  +---++
                      +__________________+ +_________________________+   ¦
J2 IDE EXIST INDICATOR  1-2 = EXIST, 2-3 = NON EXIST¦
J3 GAME PORT ENA/DIS    1-2 = ENA, 2-3 = DIS +------+
J4 FDC PORT ENA/DIS     1-2 = ENA, 2-3 = DIS ¦J12 LPT PORT 1-2=ENA, 2-3=DIS
J5 IDE IOCHRDY          1-2 = ENA, OPEN= DIS ¦J13 LPT IRQ  1-2=IRQ7, 2-3=IRQ5
J6 IDE ENA/DIS          1-2 = ENA, 2-3 = DIS ¦
J7 S1 ENA/DIS           1-2 = ENA, 2-3 = DIS ¦         NOTE: SERIAL PORT INFO
J8 LPT ADDRESS          1-2 = 378, 2-3 = 278 ¦         COM1=3F8-3FF(IRQ4);
J9 S2 ENA/DIS           1-2 = ENA, 2-3 = DIS ¦         COM2=2F8-2FF(IRQ3);
J10 S1 SELECTION        1-2 = COM1,2-3 = COM3¦         COM3=3E8-3EF(IRQ4);
J11 S2 SELECTION        1-2 = COM2,2-3 = COM4¦         COM4=2E8-2EF(IRQ3);