Adaptec 1542B - AHA Storage Controller Fast SCSI 10 MBps Support and Manuals
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User Manual - Page 2
...its conductive wrapping until it came for the Adaptec AHA-1540B/1542B AT-to a SCSI target.
Keep the ...installed in your system.
2.2 PREPARATION
The following diagram shows the approximate location of checking the various on-board jumpers, inserting the board into a full-length AT compatible connector, and connecting a SCSI cable from the on the AHA-1540B/1542B. AHA-1540B/1542B
2-1
adaptec...
User Manual - Page 3
Section Two
Preparation and Configuration
Pin I
MICROCODE
IIIIIIIMINI J8
J9
Pin 1
BIOS
= AHA-15408 Default
FIGURE 2-1.
JUMPER LOCATIONS
2.3 JUMPER CONFIGURATION
All of the jumpers have been preset at the...integrator configure the system properly if other option boards present conflicts or if more than one AHA-154X board will be installed in the same system. AHA-1540B/1542B
2-2
adaptec
User Manual - Page 4
...= Jumper Installed
Jumper block J5 is shown below:
- If any attached
AHA-15408/1542B
2-3
adaptec The AHA-1540B/1542B will initiate SCSI synchronous negotiation during initialization, or after a SCSI reset if this jumper is not installed, the AHA-1540B/1542B will still support synchronous SCSI transfers, but a different SCSI device must also be set
- If the jumper is installed.
User Manual - Page 5
...-PAIR 45 6 00 0 x0 0 0x 0 xx 0 00 x x0 x 0x x xx x
SCSI ADDRESS
7* 6 5 4 3 2 1 0
x = Jumper Installed Default
AHA-1540B/1542B
2-4
adaptec This jumper is a factory diagnostic jumper.
The SCSI parity checking is disabled if this jumper is installed. If this jumper is installed, the firmware will loop through the power on the SCSI bus.
2.3.1.2 Diagnostic Jumper
Pin-pair 2 of...
User Manual - Page 6
The DMA channel reported to the AT during the Return Configuration command is set J9, pairs 5 through 4, selects the DMA REQ signal to the following diagrams:
AHA-1540B/1542B
2-5
adaptec Pin pair 1 is the leftmost pair of pins. Jumper set by the AHA-1540B/1542B according to the following table. Pin pair 1 is the leftmost pair of the...
User Manual - Page 7
...-IA-15409/1542B
2-6
adaptec ZcCCa wCC
f( )
0 0 < < 0 0
Ox 000 x 0000x 000
J9 Ox 000 x 000 0 x 000
a-
One of these four lines must be connected in order for the board to function. x = Jumper Installed
DREQ 0, ...
O
otr
CD N- The jumper installed must match the DMA channel setting in J5. The jumper installed must match the DMA channel setting in J5. Section Two
Preparation and...
User Manual - Page 8
...interrupt channel is interrupt channel 11. al as
a a0
tr.
Jumper set by the AHA-1540B/1542B.
b:
x = Jumper Installed * = Default
AHA-1540B/1542B
2-7
adaptec Interrupt Channel Select bit 0 Interrupt Channel Select bit 1 Interrupt Channel ... 11 in selecting the AT interrupt channel. Pin pair 1 is set J9 selects the AT interrupt channel to the following table. These are...
User Manual - Page 9
... is no jumper installed. This speed may also be installed in J5.
2.3.1.7 DMA Transfer Speed Default
Pin-pairs 12 and 13 of these jumpers must be tuned to allow for the fastest possible transfer (minimum bus on or after a hard reset occurs. AHA-15408/15428
2-8
adaptec Installing jumper shunts as shown below will set the default...
User Manual - Page 10
... Auto Sense
CV CI
2
co
2 Cl)
2
to be read.
when installed, the AHA-1540B will not automatically issue a Request Sense Command when a check condition is best to leave this jumper removed. x = Jumper Installed
BIOS Enable - MIA-15408/1542B
2-9
adaptec Section Two
Preparation and Configuration
J5
0 0
0 0
0 0
0 0
0 0
0 0
0 0
x x
0 0
x x
0 0
0 0
0 0
CM C7
a- Disable Auto...
User Manual - Page 11
...AHA-1542B) will respond to the standard AT I /O ports required by device drivers and operating systems that support multiple host adapters. These port addresses may be used by the AHA-1540B/1542B is 330 (hex). AHA-1540B/1542B
2-10
adaptec...bit 1
x = Jumper Installed Pin pair 1 is the topmost pair of pins
2.3.3.1 Floppy Secondary Address
When a jumper is installed in jumper block J7. Other...
User Manual - Page 12
...set...Installed - = Jumper Not Installed
= Default
AHA-1540B/1542B
2-11
adaptec...Installed = Default
AT PORT ADDRESS
Bit 2 Bit 1 Bit 0 Select bit 1
A9 A8 A2 ADDRESS
4 3 2 Pin Pair
00 0
334H
00 x
330H'
0x 0
234H
0x x
230H
x0 0
134H
x0 x
130H
x x 0 not used
x x x not used with a port address other than 330H requires that the on-board BIOS be disabled to work correctly, and a driver...
User Manual - Page 13
...=Jumper Installed
n_
AI-IA-15408/1542B
2-12
adaptec No Jumper Installed
* = Default
2.3.3.5 Jumper Block J8 (AHA-1542B only)
...and Configuration
2.3.3.4 Board BIOS Base Address Select
The starting address of the board above J9.
x
x
x
ADDRESS DC000* CC000 D8000 C8000
x = Jumper Installed -
Pin 1
J7 0 0
X X
0 0 0 0 0 0 0 0 0 0 0 0
BIOS Address Select bit 0 BIOS Address ...
User Manual - Page 14
... floppy controller. For normal operation this jumper. Default is jumper installed, floppy enabled. selects either interrupt channel 6 or interrupt channel 10.
Dual Speed - AHA-1540B/1542B
2-13
adaptec If there is jumper in the system, the floppy controller on the AHA-1540B/1542B must be installed when a floppy drive with a dual speed spindle is used (but not...
User Manual - Page 15
... Configuration
2.3.5 SCSI Terminator Power
Fuse, Fl, controls the terminator power.
No more than five SCSI devices should be removed. If another SCSI device is Fl installed with the AHA-1540B/1542B supplying the terminator power. AFIA-1540B/1542B
2-14
adaptec
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