Floppy Disk Drives
PSB # S-00009
Again,
the AT-compatible floppy drives that have been
tested have
worked with
no problems.
(In fact,
we've connected a full-height
IBM labeled Control Data drive from an IBM PC and had it work!)
As with the fixed disk,
the 34 pin cabling from the SPFG card is a
daisy-chain configuration.
The end connector attaches to drive A;
the pass-through or center connector goes to drive
B. Both drives
again
should be
set
for
the
second DS
setting.
Terminating
resistors are installed on drive A and removed from drive B.
Once installed, boot the III+
with
the Diagnostics diskette in
drive
A and
follow
the
directions
given
in Chapter 1 in the
Diagnostics Manual.
Enhanced Graphics Adapters
EGA displays have become
extremely popular.
EGA is
just about a
"must" if
you're
involved
with
desktop
publishing or
other
graphically oriented applications.
Consult the manual
that
comes
with
your
particular
EGA card.
Typically,
DIP switches and/or jumpers have to be set (or at least
checked). Also, some EGA
cards
will
require
that a
driver be
installed in the CONFIG.SYS or AUTOEXEC.BAT files.
As for
the III+,
simply make
sure that
the front panel MONITOR
SELECT switch is set for COLOR and the Display selection
in SETUP
is changed to *Special Options*.
Miscellaneous Options
There
are a
number
of optional devices (streaming tape drives,
image scanners,
etc.) that look for three key points: DMA channel,
interrupt request level and I/O port address. The III+ follows IBM
PC AT conventions regarding port, register, DMA and IRQ usage. For
example, an
image scanner
was installed to utilize the following
parameters:
I R Q = N o n e
DMA Channel 1
I/O Port Address 220-22F Hex
This provides for a "clean" interface, with no conflicts.
We cannot maintain a current list of (for example) all third-party
fixed disk drives available.
Your best source of information would
be from your supplier of choice.
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