Hardware Installation
2-21
Size Vendor Model Single/Double Chip Count
32M NEC D4516821AG5-A10-7JF x1 16
32M SEC KM48S2020CT-GH x1 16
32M LGS GM72V661641CT7J x1 4
64M Fujitsu 81F64842B-103FN x2 16
64M Mitsubishi M5M4V64S30ATP-10 x1 8
64M NEC D4564841G5-A10-9JF x1 8
64M SEC KM48S8030BT-GH x1 8
64M Toshiba TC59S6408FTL-80H x1 8
64M LGS GM72V661641CT7J x2 8
64M LGS GM72V66841CT7J x1 9
128M LGS GM72V66841CT7J x2 18
128M Simens HYS72V16220GU x2 18
Memory error checking is supported by parity check. To use parity check you
need 72 bit DIMM (64+8 bit parity), which are automatically detected by BIOS.
Warning: The driving capability of new generation chipset is
limited because the lack of memory buffer (to improve
performance). This makes DRAM chip count an important
factor to be taking into consideration when you install DIMM.
Unfortunately, there is no way that BIOS can identified the
correct chip count, you need to calculate the chip count by
yourself. The simple rule is: By visual inspection, use only
DIMM which is less than 16 chips.
Tip: The parity mode uses 1 parity bit for each byte, normally it
is even parity mode, that is, each time the memory data is
updated, parity bit will be adjusted to have even count "1" for
each byte. When next time, if memory is read with odd
number of "1", the parity error is occurred and this is called
single bit error detection.
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