The Intel 486, officially named i486 and also known as 80486, is a microprocessor introduced in 1989. It is a higher-performance follow-up to the Intel 386. It represents the fourth generation of binary compatible CPUs following the 8086 of 1978, the Intel 80286 of 1982, and 1985's i386.

Feb 6, 2021 · ao486 is a x86 PC-compatible core implementing all features of an 80486SX CPU. Together with the 486 core, the ao486 project also contains a SoC capable of booting DOS, Windows 3.1, Windows 95 and Linux kernel 3.13. Performance-wise, the core is in line with a i486DX-33 CPU – only with a missing FPU. This makes it perfect for DOS gaming. Features

It was a modified Intel i486DX microprocessor with its floating-point unit (FPU) disabled. It was intended as a lower-cost CPU for use in low-end systems—selling for US$ 258—adapting the SX suffix of the earlier i386SX in order to connote a lower-cost option.

Intel 's i486 OverDrive processors are a category of various Intel i486s that were produced with the designated purpose of being used to upgrade personal computers. The OverDrives typically possessed qualities different from 'standard' i486s with the same speed steppings.

Sep 23, 2019 · It used a 486 bus and plugged into the 486 socket, but actually incorporated some Pentium-like technology into its CPU core. The 486 bus slowed this chip down as well, but it outperformed AMD running at the same clock rate.

The 486 provides more than twice the performance of the 386 microprocessor. The processor can address up to 4-Gigabytes of physical memory and 64-Terabytes (1-Terabyte = 1-K Gigabyte) of virtual memory. To implement a virtual memory system, the 486 supports full restartability for all page and segment faults. It

ADVANCED POWER MANAGEMENT 1.1 DESCRIPTION The ST486 CPU is an advanced 486DX/DX2 compatible processor. It incorporates an on-chip 8-KByte write-back cache and an integrated math coprocessor. The on-chip write-back cache allows up to 15% higher performance by eliminating unnecessary external write cycles.

Designed by Deksor, computerguy096 and Zago. (c) 2019-2025 All wrongs reversed.

Designed by Deksor, computerguy096 and Zago. (c) 2019-2025 All wrongs reversed.

The ao486 is an x86 compatible Verilog core implementing all features of a 486 SX. The core was modeled and tested based on the Bochs software x86 implementation. Together with the 486 core, the ao486 project also contains a SoC capable of booting the Linux kernel version 3.13 and Microsoft Windows 95. Current status. 31 March 2014 - initial ...