EduQuest Thirty Photo
Content by William R. Walsh (original HERE). Modified by Major Tom.
CPU: IBM 386SLC-25 CPU (soldered)
RAM: 4MB soldered
Despite its name, the 386SLC is a 486SX from a software perspective.
It's actually an interesting mix of technologies: you have the 16/24
bit data and address buses from the 386SX, a 486SX compatible
instruction set with some enhancements by IBM, a few power saving
features and some extra cache over that of a standard Intel 486 CPU.
IBM had at one time a license to produce and modify any Intel
microprocessor design. They did so for many years, up until at least
the early Pentium era.
X1 12.000MHz XTAL
OSC1 14.318MHz (RTC, "Color Burst" signal?, ISA bus?)
OSC2 50.000MHz (CPU)
OSC3 16.000MHz (?)
OSC4 24.000MHz (FDC?)
D4 Green LED