Esdi External Fixed Disk Drive Controller Board - Compaq PORTABLE 386 Maintenance And Service Manual

Chapter 9.7 ESDI External Fixed Disk Drive Controller Board
Switch settings for the 1:1 Interleave Buffered ESDI External Fixed Disk Drive
Controller Board are listed in Table 9-17.
Table 9-17. 1:1 Interleave Buffered ESDI External Fixed Disk Drive Controller
Board (Assy No. 001091)
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Switch Setting
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1 ON
2 OFF (default) Primary Address
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2 and 3 OFF/OFF
ON/OFF
OFF/ON
ON/ON
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The board is shown in Figure 9-7.
Status
Secondary Address
IRQ15 Selected
IRQ14 Selected
IRQ12 Selected
IRQ11 Selected
Function
Selects controller address.
Selects power up default
interrupt for the board.