User`s guide

EPSON
EPSON AMERICA, INC.
SERVICE PRODUCT SUPPORT BULLETIN
PSB NO.: S-0017A DATE: 6/29/88
PAGE: 1 of 1
SUBJECT:
EQUITY COMPUTERS AND FLOPPY DISK DRIVES
There is still some confusion regarding which
FDDs will work
with which Equity.
Here is a quick reference for FDD selection
(for detailed information, refer to PSB Number S-0001).
Equity I
--- --
Equity I+
--- ---
Epson Q520A-AA (360 KB)l
Epson Q213A-AA (360 KB)
Epson A112A-AA (720 KB, 3.5")
Equity II
--- ---
Epson Q213A-AA (360 KB)
Epson Q911A-AA (1.2 MB)
2
Equity II+
--- ----
Epson Q213A-AA (360 KB)
Epson Q212A-AA (1.2 MB)
Epson A112A-AA (720 KB, 3.5")
Equity III
--- ----
Epson Q213A-AA (360 KB)
Epson Q212A-AA (1.2 MB)
Equity III+
--- -----
Epson Q213A-AA (360 KB)
Epson Q212A-AA (1.2 MB)
Epson A112A-AA (720 KB, 3.5")
1 -
This is the only FDD compatible with the Equity I.
2 - This is the only 1.2 MB FDD compatible with the Equity II.
One of the key issues is: NEVER USE ANY 1.2 MB FDD OTHER THAN
THE Q911A-AA IN THE EQUITY II!
The interface
is slightly
different from the AT "standard". As a result,
an AT-type
drive will work erratically (if at all). One of the problems
is a disk change error,
or continuing to use
the directory
from a previous disk.
Also on the Equity II,
MS-DOS 3.2 does not allow sufficient
retries on diskette read/write with the Q911A-AA.
Consistent
"Abort, retry, ignore?"
messages result
when attempting to
log a new disk.
Typically, "r" for
retry will overcome this
situation.
MS-DOS 3.2 operation with the Q213A-AA is correct.
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