ReActiveMicro MicroDrive Turbo, Owner'S Manual, Page: 29 / 55

MicroDrive Turbo 22 ReActiveMicro
Firmware
The
MicroDrive Turbo
comes Pre-Setup for the Apple II
GS
or the Apple IIe Enhanced
Personal Computer.
This can be determined by the Firmware ROM which is installed on the card. The
ROM is the small square IC on the upper right of the card. It is the only IC that is
removable (Socketed).
The IIe Firmware works on both the Apple IIe Enhanced and Apple II
GS
; however, it
is quite slow in the II
GS
compared to the II
GS
Firmware.
Note: The Apple IIe Enhanced will lock up if the II
GS
Firmware is used on the
MicroDrive Turbo.
ROM Chip Removal
The IIe Firmware ROM is marked with a label that displays IIe . If the label has been
removed or fallen off. Try the
MicroDrive Turbo
in an Enhanced IIe, if the computer
operated correctly then the
IIe
Firmware is installed.
Step by Step Instructions
To remove the Firmware ROM, you will need a PLCC Extraction Tool .
These can be found online such as eBay for around $5.00.
✗
Do not pry too hard on the ROM
Socket if possible. Reference the
picture for the areas on which to
pry up.
✗ The New Firmware ROM should
be installed in the same
orientation with the chip markings
facing up.
✗ Installing the ROM backwards
WILL damage it!
✗
Reference the picture and you will
notice one corner of the Socket
and ROM are CUT. The other corners are square. There is usually a DOT or
mark on the case of the IC to help denote which side is which. In the case of
the
MicroDrive Turbo
we want to make sure the Cut Corner and the DOT are
facing to the LEFT.
✗ The chip markings should be facing up, legible, with the gold Edge Connector
(aka - Slot Edge) on the bottom of the
MicroDrive Turbo
.
ROM Location and
Where To Pry To Remove