BT-542B Hard Disk/Floppy Controller Settings and Configuration

BUSLOGIC, INC.

BT-542B

Data bus: 16-bit, ISA

Size: Three-quarter length, full-height card

Hard drives supported: Up to seven SCSI devices

Floppy drives supported: Two 360KB, 720KB, 1.2 MB or 1.44 MB drives

CONNECTIONS
Function
Location
4-pin connector - drive active LED
J1
34-pin connector - floppy drive interface
J2
50-pin SCSI connector - internal
J3
50-pin SCSI connector - external
J4

SCSI ADDRESS
SCSI ID
SW1/Switch 1
SW1/Switch 2
SW1/Switch 3
»
7
on
on
on

0
off
off
off

1
on
off
off

2
off
on
off

3
on
on
off

4
off
off
on

5
on
off
on

6
off
on
on

USER CONFIGURABLE SETTINGS
Function
Location
Setting
»
SCSI Parity check enabled
SW1/switch 4
on
»
SCSI Parity check disabled
SW1/switch 4
off
»
SCSI Auto Sense function enabled (for Rev. <=F)
SW1/switch 5
on
»
SCSI Auto Sense function disabled (for Rev. <=F)
SW1/switch 5
off
»
Disk >1G support disabled (for Rev. >=G)
SW1/switch 5
on
»
Disk >1G support enabled (for Rev. >=G)
SW1/switch 5
off
»
Synchronous transfer initiation from controller disabled
SW1/switch 6
on
»
Synchronous transfer intitiation from controller enabled
SW1/switch 6
off
»
Floppy drive port address 3F0-3F7h
W14
open
»
Floppy drive port address 370-377h
W14
closed
»
Floppy drive enabled
W15, W16
closed
»
Floppy drive disabled
W15, W16
open
»
I/O channel ready enabled
W17/pins 1 & 2
closed
»
I/O channel ready disabled
W17/pins 2 & 3
closed
»
Factory configured - do not alter
W18
N/A
»
Factory configured - do not alter
W19
N/A

DMA CHANNEL
DMA
SW1/Switch 7
SW1/Switch 8
»
5
on
on

6
off
on

7
on
off

Disabled
off
off

I/O PORT ADDRESS
Address
SW2/Switch 1
SW2/Switch 2
SW2/Switch 3
»
330h-333h
on
on
on

130h-133h
on
off
on

134h-137h
on
off
off

230h-233h
off
on
on

234h-237h
off
on
off

334h-337h
on
on
off

Reserved
off
off
on

Reserved
off
off
off

BIOS ADDRESS
Address
SW2/Switch 4
SW2/Switch 5
»
DC000h
on
on

D8000h
off
on

C8000h
off
off

Disabled
on
off

INTERRUPT REQUEST CONFIGURATION
IRQ
SW2/Switch 6
SW2/Switch 7
SW2/Switch 8
W3
»
IRQ11
on
on
on
open

IRQ9
on
off
on
open

IRQ10
off
on
on
open

IRQ12
off
off
on
open

IRQ14
on
on
off
open

IRQ15
off
on
off
closed

Reserved
off
off
off
N/A

Reserved
on
off
off
N/A

INTERRUPT REQUEST CONFIGURATION (CONTINUED)
IRQ
W4
W5
W6
W7
W8
»
IRQ11
open
open
closed
open
open

IRQ9
open
open
open
open
closed

IRQ10
open
open
open
closed
open

IRQ12
open
closed
open
open
open

IRQ14
closed
open
open
open
open

IRQ15
open
open
open
open
open

Reserved
N/A
N/A
N/A
N/A
N/A

Reserved
N/A
N/A
N/A
N/A
N/A

BUS TRANSFER RATE
Rate
W11
W13
»
5.0MB/sec
open
open
»
5.7MB/sec
open
closed
»
6.7MB/sec
closed
open
»
8.0MB/sec
closed
closed

Headaches Begone! A Systemic Approach To Healing Your Headaches

Don't Let Your Bike Seat Ruin Your Sex Life Book

BT-542B Hard Disk/Floppy Controller Settings and Configuration

Search

My Books

Discover

CONNECTIONS
Function	Location
4-pin connector - drive active LED	J1
34-pin connector - floppy drive interface	J2
50-pin SCSI connector - internal	J3
50-pin SCSI connector - external	J4

SCSI ADDRESS
SCSI ID		SW1/Switch 1	SW1/Switch 2	SW1/Switch 3
»	7	on	on	on
	0	off	off	off
	1	on	off	off
	2	off	on	off
	3	on	on	off
	4	off	off	on
	5	on	off	on
	6	off	on	on

USER CONFIGURABLE SETTINGS
Function		Location	Setting
»	SCSI Parity check enabled	SW1/switch 4	on
»	SCSI Parity check disabled	SW1/switch 4	off
»	SCSI Auto Sense function enabled (for Rev. <=F)	SW1/switch 5	on
»	SCSI Auto Sense function disabled (for Rev. <=F)	SW1/switch 5	off
»	Disk >1G support disabled (for Rev. >=G)	SW1/switch 5	on
»	Disk >1G support enabled (for Rev. >=G)	SW1/switch 5	off
»	Synchronous transfer initiation from controller disabled	SW1/switch 6	on
»	Synchronous transfer intitiation from controller enabled	SW1/switch 6	off
»	Floppy drive port address 3F0-3F7h	W14	open
»	Floppy drive port address 370-377h	W14	closed
»	Floppy drive enabled	W15, W16	closed
»	Floppy drive disabled	W15, W16	open
»	I/O channel ready enabled	W17/pins 1 & 2	closed
»	I/O channel ready disabled	W17/pins 2 & 3	closed
»	Factory configured - do not alter	W18	N/A
»	Factory configured - do not alter	W19	N/A

DMA CHANNEL
DMA		SW1/Switch 7	SW1/Switch 8
»	5	on	on
	6	off	on
	7	on	off
	Disabled	off	off

I/O PORT ADDRESS
Address		SW2/Switch 1	SW2/Switch 2	SW2/Switch 3
»	330h-333h	on	on	on
	130h-133h	on	off	on
	134h-137h	on	off	off
	230h-233h	off	on	on
	234h-237h	off	on	off
	334h-337h	on	on	off
	Reserved	off	off	on
	Reserved	off	off	off

BIOS ADDRESS
Address		SW2/Switch 4	SW2/Switch 5
»	DC000h	on	on
	D8000h	off	on
	C8000h	off	off
	Disabled	on	off

INTERRUPT REQUEST CONFIGURATION
IRQ		SW2/Switch 6	SW2/Switch 7	SW2/Switch 8	W3
»	IRQ11	on	on	on	open
	IRQ9	on	off	on	open
	IRQ10	off	on	on	open
	IRQ12	off	off	on	open
	IRQ14	on	on	off	open
	IRQ15	off	on	off	closed
	Reserved	off	off	off	N/A
	Reserved	on	off	off	N/A

BUS TRANSFER RATE
Rate		W11	W13
»	5.0MB/sec	open	open
»	5.7MB/sec	open	closed
»	6.7MB/sec	closed	open
»	8.0MB/sec	closed	closed