
Turbo PMAC2 Hardware Reference Manual
E7 – E10
: IRQ PC Interrupt Select
E Point &
Physical Layout
Location Description
Default
E7
Jump E7 pin 1 to 2 to permit
PMAC2-PC Ultralite to interrupt
PC on ISA bus interrupt line
IRQ10.
Remove E7 jumper to inhibit
interrupt capability on this line.
No jumper
installed
E8
Jump E8 pin 1 to 2 to permit
PMAC2-PC Ultralite to interrupt
PC on ISA bus interrupt line
IRQ11.
Remove E8 jumper to inhibit
interrupt capability on this line.
No jumper
installed
E9
Jump E9 pin 1 to 2 to permit
PMAC2-PC Ultralite to interrupt
PC on ISA bus interrupt line
IRQ12.
Remove E9 jumper to inhibit
interrupt capability on this line.
No jumper
installed
E10
Jump E10 pin 1 to 2 to permit
PMAC2-PC Ultralite to interrupt
PC on ISA bus interrupt line
IRQ15.
Remove E10 jumper to inhibit
interrupt capability on this line.
No jumper
installed
E17 – E18
: Serial Port Select
E Point &
Physical Layout
Location Description
Default
E17
Jump E17 pin 1 to 2 to select RS-
232 serial data input from J5.
Jump E17 pin 2 to 3 to select RS-
422 serial data input from J5A.
Pins 1 – 2
jumpered
E18
Jump E18 pin 1 to 2 to select RS-
232 serial handshake input from J5.
Jump E17 pin 2 to 3 to select RS-
422 serial handshake input from
J5A.
Pins 1 – 2
jumpered
6
Jumper Description
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