Adaptec ACB-232XB User Manual page 13

TABLE 2-4. ACB-2322B CONTROLLER JUMPER DEFINITIONS
J22 Floppy Disk Interrupt Request signal selection
Pins 1 and 2 jumpered for IRQ6*
Pins 2 and 3 jumpered for IRQ10
J23 Read Ahead Cache Buffer Size
Pins 1 and 2, Pins 4 and TP15 jumpered for 8KB
Pins 1 and 2, 3 and 4 jumpered for 16KB
Note: Jumper positions and pin numbers are defined from left to right, or
top to bottom, where applicable per Figure 2-1. An asterisk (*) denotes
jumpers that are installed for a standard configuration.
TABLE 2-5. ACB-2320B CONTROLLER JUMPER DEFINITIONS
J1 Hard disk data cable (20-pin), First drive (Drive 1)
J2 Hard disk data cable (20-pin), Second drive (Drive 2)
J3 Hard disk control cable (34-pin), Both drives
J4 Drive activity LED - Pins 1,4 are +5 Volts, Pins 2,3 are Signal Ground
J5 BOARD CONFIGURATION JUMPERS
Position 1 Hard Disk Port Addresses
Position 2 Not Used
Position 3 Bus Wait State
Position 4 Not Used
Position 5 Read Ahead Cache
Position 6 Not used.
Position 7 Not used.
J12 Controller's system interrupt selection
Pins 1 and 2 jumpered for IRQ14*
Pins 2 and 3 jumpered for IRQ15
J13 Adaptec ACB-BIOS address selection
Position 1 and 2 Jumpered for BIOS address C8000 - CBFFF*
Position 2 and 3 Jumpered for BIOS address CC000 - CFFFF
No Jumper will disable the BIOS.
Note: Jumper positions and pin numbers are defined from left to right, or
top to bottom, where applicable per Figure 2-1. An asterisk (*) denotes
jumpers that are installed for a standard configuration.
Step 2 Hard Disk Cabling, Drive Selection and Termination
The drive changeable parameters that must be set are the drive selection switches (or
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ACB-232XB User's Manual
(CONTINUED)
Not installed: primary address 1F0 -1F7*
Installed: secondary address 170 - 177
Not installed: Enabled*
Installed: Disabled
Not installed: Enabled*
Installed: Disabled
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