Phoenix Configuration; Floppy Disk Configuration; Adl Utility - Adaptec AHA-1740A Technical Reference Manual

EISA-to-Fast SCSI Host Adapter

Phoenix Configuration

Configuration using the Phoenix utility is similar to that under MCS. Use the arrow
keys to select the board to configure after entering the Configuration menu, selecting
function choices and pressing Enter. Press Enter when the appropriate board slot is
highlighted.
Selection among the available system options is made by using the up/down arrows.
Press the Spacebar at the option to allow for a toggling among options available.
There is no facility for selection of peripheral options under Phoenix. To exit, skip to
the bottom of the page and press Enter when OK is highlighted.

Floppy Disk Configuration

The AHA-1742A is normally shipped with its floppy disk controller enabled. This
may be disabled to prevent conflict with an existing floppy disk controller already in
the system by removing the rightmost jumper from J6 on the lower left of the board.
If the jumper is removed, the board will return the identity of an AHA-1740A to any
software inquiry command. This allows software to use the appropriate configuration
file for the main part of the board, as described previously.
The floppy disk can reside at one of two address blocks. Normally, it uses addresses
3F0h-3F6h as the primary address. A secondary address of 370h-376h can be se-
lected by placing a jumper on block J6 in the second position from the right, next to
the floppy enable jumper described above.

ADL Utility

The microcode with which the AHA-1740/1744 is equipped has two components.
Standard Mode ( standard.hex )
Enhanced Mode ( enhanced.hex )
Both are permanently stored on the AHA-1740A/1742A/1744 simultaneously. Selec-
tion between these modes affects the software manager required to support the
board. It has no effect on the SCSI or host bus hardware. The firmware download can
either be used to configure the board for one of the two main modes, or to upgrade
the board to a later revision of firmware for a particular mode (AHA-1740/1744 only).
The Standard Mode allows software drivers written for the AHA-1540 or AHA-1640
families to run unaltered on the AHA-1740 family. There is no performance penalty
for this on the EISA bus. The AHA-1740 performs 32-bit transfers at speeds up to 33
MBytes/second.
The Enhanced Mode allows the board to take advantage of a number of features
which were not available on earlier host adapters. These include:
Installation
3-15