Motorola MVME147 Installation And Use Manual page 26

Hardware Preparation and Installation
ROM Configuration Select Headers (J1, J2)
2
J1 and J2 Jumpers
2-6
The MVME147 supports various sizes of EPROMs and EEPROMs.
Four 32-pin ROM/PROM/EPROM/EEPROM sockets are
provided on the module. They are organized as two banks with two
sockets per bank. Each pair of sockets may be individually
configured. Sockets U22 and U30 form bank 1. Sockets U1 and U15
form bank 2.
The banks are configured as word ports to the MPU with U22 and
U1 comprising the even bytes and U30 and U15 the odd bytes. Each
bank can be configured for 8K x 8, 16K x 8, 32K x 8, 64K x 8, 128K x
8, 256K x 8, 512K x 8, or 1M x 8 ROM/PROM/EPROM devices; or
for 2K x 8, 8K x 8, or 32K x 8 EEPROM devices.
As shipped, the module is configured for 128K x 8 ROM/PROM/
EPROM devices (Configuration #5), and the MVME147Bug
debugger software EPROMs are installed in sockets U22 and U30.
Note There are several different algorithms for
erasing/writing to EEPROM devices depending on the
manufacturer. The MVME147 supports only those
devices which have a Òstatic RAMÓ compatible
erase/write mechanism such as Xicor X28256 or
X2864H.
The J1 and J2 headers on the MVME147 module must be configured
for the ROM device type used, as shown on the following pages.