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Details

Name: next486_soc_pc
Created: Oct 12, 2026
Updated: Oct 13, 2026
SVN: No files checked in
Bugs: 0 reported / 0 solved
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Other project properties

Category:System on Chip
Language:Verilog
Development status:Beta
Additional info:
WishBone compliant: No
WishBone version: n/a
License: LGPL

Coming soon

486SX compatible CPU integrated in a SoC, with VGA, VESA, DVI out, 4bit SD, Sound Blaster 16, PS2 KB and mouse, stereo audio out (2x1bit RC DAC). 11600 LUT6 (77%) on XC6SLX25-3FTG256 (MiniSpartan6+ board), up to 70Mhz CPU, up to 165Mhz SDRam 32MB/16bit interface. Running FreeDOS, DOS6.22, Windows3.0, Windows3.1, Windows95.

CPU at 70Mhz:

  • 486SX compatible.
  • SysInfo CPU benchmark: 206.8 (~Pentium66).
  • Landmark speed test v2.00: 336Mhz.
  • 3D bench: 83.3 FPS.
  • 0.70 DMIPS/MHz, Dhrystone 2.1 built with Watcom C 10.5 -otxan -zp8 -5r -ms -fpc (no inline procedures).
  • 0.76 DMIPS/MHz, Dhrystone 2.1 built with Watcom C 10.5 -otexan -zp8 -5r -ms -fpc (full optimization).
  • Original DOOM 1.9 timedemo: 33.3FPS at 70Mhz (nosound, fullscreen no status bar, high detail).
  • FastDOOM timedemo: up to 43FPS at 70Mhz (nosound, fullscreen no status bar, high detail).
  • 7300 LUT6, 32KB BRAM.
  • Integrated 16KB cache, VGA planar engine.
  • Extra feature: Real mode paging (used for VBE 1.x bank switching and EMS with no VM86).

HD at 70Mhz:

  • Sysinfo benchmark: 7.6MB/s.