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Description,
Continued
Cache Memory
The Super Voyager VLB-III motherboard supports 64 KB or 256 KB of direct mapped, write-through or
write-back L2 external (secondary) cache memory.
Secondary cache
SRAM Type
Maximum System
memory size
Memory Cached
64 KB
8 KB x 8
64 MB
256 KB
32 KB x 8
128 MB
The Intel 486DX, 486DX2, 486SX, AMD486, and 487SX CPUs have 8 KB of internal cache memory. The
486DX4 CPU has 16 KB of internal cache memory. All system memory can be cached in internal cache
memory. The cache read has zero wait states. Burst mode is supported.
Main System Memory
The Super Voyager VLB-III motherboard supports up to 128 MB of onboard system memory in four
SIMMs. Each memory socket holds a x 36 SIMM that is actually logically equivalent to a bank of system
DRAM memory.
SIMM Types Supported
The Super Voyager VLB-III motherboard supports 256 KB x 36, 512 x 36, 1 MB x 36, 2 MB x 36, 4 MB x
36, 8 MB x 36, or 16 MB x 36 fast page mode SIMMs operating at 70 ns (RAS access time). The SIMMs
can be single-sided or double-sided.
Shadow RAM
The system BIOS memory area (F0000h–FFFFFh), video BIOS area (C0000h–C7FFFh), and Adaptor
ROM (C80000h – EFFFFFh) can be shadowed via WinBIOS Setup.
Super Voyager VLB-III ISA Motherboard User's Guide
5
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