
S1C6P466 TECHNICAL MANUAL
EPSON
139
APPENDIX A PROM PROGRAMMING
A.3.2 System connection and setup for parallel programming
Connect the Universal Writer to the personal computer and install the S1C6P466 Adapter Socket to the
Universal Writer.
EPSON
UNIVERSAL
ROM
WRITERII
I
O
DSW
P2
POWER
RS232C
AC IN
POWER
FUSE
V
SS
TXD
RXD
CLK1M
SCLK
V
PP
RS-232C
READY
S1C6P466 Adapter Socket
Power cable
RS-232C cable
E0C63P466
ADAPTERSOCKET
Fig. A.3.2.1 System connection diagram
The system should be connected according to the following procedure.
(1) Confirmation of power off status
Make sure the power for the personal computer and the Universal Writer is switched off.
(2) Connecting the power cable
A dedicated power cable is included in the ROM Writer package. Connect the power cable to the AC
IN connector on the rear panel of the ROM Writer.
(3) Connecting the RS-232C cable
Connect the Universal Writer and personal computer using the supplied RS-232C cable. The RS-232C
cable is for IBM-PC/AT use (9 pins - 9 pins).
Note: Secure the RS-232C cable with the connector screws to prevent malfunction.
(4) Installing the S1C6P466 Adapter Socket
Install the S1C6P466 Adapter Socket to the top connector of the Universal Writer. There is a projection
on the S1C6P466 Adapter Socket connector to prevent improper insertion. Line up the S1C6P466
Adapter Socket to fit to the notch of the Universal Writer connector.
Note: When disconnecting the S1C6P466 Adapter Socket, make sure the power for the Universal Writer
is off.
(5) Confirmation of DIP switch status
Check to see that the DIP switch (DSW) located at the back panel of the Universal Writer has been set
as the Figure A.3.2.2 (factory setting).
1 2 3 4
D S W
5 6 7 8
Fig. A.3.2.2 DIP switch settings
Note: Set SW1 and SW2 up, and
SW3 to SW8 down.
The name 'Universal ROM Writer II' on the
development tool is the old name of the product.