Xycom XVME-976/202 Manual page 59

Restrictions on EPROM Use
NEC EPROMs 27C1001, and 27C1002 cannot coexist on the same module
with battery backed RAM. These EPROMs draw significant current (>
1mA) through their Chip Select inputs and may cause failure of the back-up
battery. Signetics 27C256 may draw up to 10 uA through its Chip Select in-
puts when not powered. Though substantially less than the NEC part, it is
still much greater than the usage (typically < 1 uA) by other devices. Use of
such devices may limit battery life. It is your responsibility to determine the
proper devices for your application.
Flash EPROM Jumpering
To install Flash EPROMs, jumper the byte-wide sockets according to the
contents of Table 4-10, then plug in the devices.
Name Size
Bytes
28C256 32K
29C256 32K
28F256 32K
28F512 64K
28F010 128K
28F020 256K
* or equivalent
Flash EPROM Jumpering
Table 4-10.
Mfgr.* Pins
W1, 6
Atmel 28
Atmel 28
Intel 28
Intel 28
AMD 32
Intel 32
Chapter 4 - Memory Expansion Module Installation
Jumpering
W2, 7
1/2 5/6, 8/9
1/2 5/6, 6/9
1/2 2/3, 4/5, 6/9
1/2 2/3, 4/5, 6/9, 7/8
1/2 2/3, 4/5, 5/9, 7/8
1/2 2/3, 4/5, 6/9, 7/8
W3, 8 W4, 9
Open 3/5, 4/6
Open 3/5, 4/6
Open 4/6
Open 4/6
Open 4/6
Open 1/3, 4/6
4-11