Overview Features Instructions Performance Forum Downloads Products Reseller Contact

Welcome to the Apollo Forum

This forum is for people interested in the APOLLO CPU.
Please read the forum usage manual.

All TopicsNewsPerformanceGamesDemosApolloVampireCoffinReleases
Performance and Benchmark Results!

FPU Speed Up In Upcoming CORE Release

Gunnar von Boehn
(Apollo Team Member)
Posts 3431
03 Apr 2018 14:17

Some FPU speedup in upcoming APOLLO Core release.

x11 Core Speed results:

Roger Andre Lassen

Posts 32
03 Apr 2018 14:20

Impressive Gunnar :-)

Vojin Vidanovic

Posts 345
03 Apr 2018 16:08

Nice 105 MIPS and 51 MFLOPS for what ... A500 V2 with 2.9 CORE X11?

Rod March

Posts 55
03 Apr 2018 17:31


Przemyslaw Tkaczyk

Posts 68
03 Apr 2018 17:50

Same core revision, but in A600. Even slightly faster :) Kudos, Gunnar!

Peter Heginbotham

Posts 131
03 Apr 2018 19:09

Does this next release fix the rounding issue

Gunnar von Boehn
(Apollo Team Member)
Posts 3431
03 Apr 2018 19:11

Peter, here you can read about the FPU.
The Wiki page should answer your question.

Don Adan

Posts 6
03 Apr 2018 23:26

Looks good. Except fpsp handled instructions, are only a few fastest than MC68882 version, and over 2-3 times slowest than Pentium version. Im not hardware expert, but for me optimised versions for 68080FPU can be much fastest. I know that problem for handling these instructions in FPGA is limited FPGA space. My idea (i dont know if possible to do) is next. Remove FPSP vector, place all highly optimised microcoded instructions inside Apollo core, place all big tables for microcoded instructions in external ROM. I think that it will be much fastest, because only reads from external ROM tables will be slow.

Gregthe Canuck

Posts 248
04 Apr 2018 01:26

Wow that is a big boost. Nice work!

Gunnar von Boehn
(Apollo Team Member)
Posts 3431
07 Apr 2018 10:04

AIBB FPU Beachball 3D Render speed using GOLD 2.9 x11 Core

posts 10