CHAPTER 1: INTRODUCTION
The 486MIS system board adds to our 486 product line high integration
and cost effective solution without compromising performance and
quality. With top speed at 50MHz and integrated 64K/128K/256K Write-
Back cache, the 486MIS dramatically boosts system throughput for even
the most demanding applications. The 486MIS offers features and
functionality exceeding any other system board in its class, including:
CPU:
·
Intel i486DX, i486DX2, i486SX, i487SX, P24T, and Overdrives.
Cache Memory:
·
Supports 64K/128K/256K/512K cache memory.
Main Memory:
·
Supports 512Kx36, 1Mx36, 2Mx36, 4Mx36, and 8Mx36 72-pin SIMM
modules.
·
Up to 64 MBytes on-board memory.
Slots:
·
Two 32-bit VESA Local Bus (VL-Bus) slots.
·
Six 16-bit ISA bus slots.
On-Board Battery:
·
Use Dallas compatible DS1287 Real-Time-Clock and Battery with
over 10 years of operation in the absence of power.
SCSI Port:
·
32-bit VL-Bus interface with 128-byte data buffer to increase
performance.
·
Compatible with Adaptec 1510/1520/1522 SCSI-2 adapters.
Page 4 486MIS System Board User's Manual
