IBM 386SLC

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The IBM 386SLC was an Intel-licensed version of the Intel 80386SX, developed and manufactured by IBM in 1991. It included power-management capabilities and an 8KB internal L1 cache, which caused it to run as fast as Intel 80386DX processors of the same speed, which were considerably more expensive. Known inside IBM as "Super Little Chip" for its initials, it was used in IBM PS/2 35, 40 56 Series, but never gained much market share. It was also marketed as an optional upgrade for 8086-equipped IBM PS/2 25 Series computers.

Contents 1 Design and Technology 2 IBM 486SLC 3 See also 4 References

[edit] Design and Technology

Built with complementary metal oxide semiconductor (CMOS) technology, the IBM 386SLC had a 161-square millimeter die. It was available with clock speeds of 16, 20, and 25 MHz. The 25Mhz model produced only 2.5 watts of dissipated power, making it specially well suited for laptops and other portable devices.

[edit] IBM 486SLC

IBM 486SLC was an improved version of the IBM 386SLC.

• 32-bit processor core compatible with a Intel 80486SX
• External coprocessor is Intel 80387
• External bus is from the Intel 80386SX: 16 data and 24 address lines
• Internal 16K L1 cache
• Power-management comes from the Intel 80386SL laptop processor
• Package (PLCC) comes from the 386SX

There was also available clock-doubler version: IBM 486SLC2.

IBM 486SLC2-50 was used in the PS/2E (IBM 9533).

[edit] See also

• Intel 386
• IBM PS/2
• ThinkPad

[edit] References

• PC Magazine's article
• Detailed description and pictures