ST07A, ST08A

SEAGATE TECHNOLOGY, INC.

ST07A, ST08A

Data bus: 16-bit, ISA

Size: Half-length, full-height card

Hard drives supported: Two IDE (AT) Interface drives

Floppy drives supported: ST07A: None

ST08A: Two 360KB, 720KB, 1.2MB, or 1.44MB

CONNECTIONS

Function

Location

40-pin AT Interface (IDE) control cable connector-internal

J1

34-pin data cable connector-floppy drive (ST08A only)

J2

4-pin connector-drive active LED

J3

5-pin connector-DC power

J4

USER CONFIGURABLE SETTINGS

Function

Location

Setting

»
Port addresses are 1F0-1F7, 3F6-3F7 3F0-3F5, 3F7h

JP2

open

Port addresses are 170-177,376-377 370-375, 377h

JP2

closed

»
Floppy drive disabled

JP4

open

Floppy drive enabled

JP4

closed

»
IRQ14 is connected directly to the host

JP5

pins 2 & 3 closed

IRQ14 to the host is cleared when the drive goes BUSY

JP5

pins 1 & 2 closed

»
I/O channel READY from hard drive is not connected to host

JP6

open

I/O channel READY from the hard drive is connected to host

JP6

closed

CONNECTIONS
Function	Location
40-pin AT Interface (IDE) control cable connector-internal	J1
34-pin data cable connector-floppy drive (ST08A only)	J2
4-pin connector-drive active LED	J3
5-pin connector-DC power	J4

USER CONFIGURABLE SETTINGS
Function		Location	Setting
»	Port addresses are 1F0-1F7, 3F6-3F7 3F0-3F5, 3F7h	JP2	open
	Port addresses are 170-177,376-377 370-375, 377h	JP2	closed
»	Floppy drive disabled	JP4	open
	Floppy drive enabled	JP4	closed
»	IRQ14 is connected directly to the host	JP5	pins 2 & 3 closed
	IRQ14 to the host is cleared when the drive goes BUSY	JP5	pins 1 & 2 closed
»	I/O channel READY from hard drive is not connected to host	JP6	open
	I/O channel READY from the hard drive is connected to host	JP6	closed