Drobe :: The archives
About Drobe | Contact | RSS | Twitter | Tech docs | Downloads | BBC Micro

Confirm comment report request

Hi Julian,

Agreed, SRAM based FPGA's do allow for dynamic modification (without even a re-boot). And like you suggest I've seen information about various uses for FPGA application specific acceleration (it is a useful approach IMHO).

My reason for preferring Antifuse over SRAM was for different reasons - yes they are more restrictive, but they once programmed (outside the machine) can't be corrupted (and so should be reliable than SRAM units). I was considering FPGA's as a cheaper alternative for limited runs (where an ASIC would be just too darned expensive) and was not even considering the FPGA as a means of making the machine hardware "reconfigurable".

There is no reason why a computer could not have both types, the antifuse for bits that must be available from power on (and be uncorruptable) and SRAM for non-critical uses where configuration failure or corruption would not crash the machine.

Actually there is always some argument going on somewhere about Single Event Upsets (SEU's) the SRAM proponents (such as Xilinx) say they rarely happen (about once every 170 years (*)- but do bear in mind that's only an ESTIMATE) while Antifuse proponents suggest that their technology is less prone to such events.

Regards

Annraoi

(*) As FPGA's haven't be around for that long it has to be a statistical estimate - and as they say there's lies damn lies and statistics.

 is a RISC OS UserAMS on 23/07/03 1:16PM
[ Reply | Permalink | Report ]

Click on the button below to confirm you wish to flag up this comment to the website's administrators. Abuse of this service will be frowned upon and it should only be used to notify us of comments that are extremely distasteful, indecent or otherwise unlawful. If you disagree with an opinion expressed or fact stated in a comment, please take part in the debate rather than expect it to be removed.

Return to the drobe.co.uk front page

Details

Reporting user / IP: / 54.91.41.87
Comment GID: 29028
Timestamp: Sun, 19 May 2019 18:51:24 +0000

Search the archives

Today's featured article

  • NetSurf bags GBP10K investment from Google
    Four uni coders lined up to improve web browser
     35 comments, latest by tlsa on 24/11/08 4:19PM. Published: 21 Apr 2008

  • Random article

  • Desktop game Shanghai updated: Give your computer a Chinese feel

     Discuss this. Published: 6 Mar 2001

  • Useful links

    News and media:
    IconbarMyRISCOSArcSiteRISCOScodeANSC.S.A.AnnounceArchiveQercusRiscWorldDrag'n'DropGAG-News

    Top developers:
    RISCOS LtdRISC OS OpenMW SoftwareR-CompAdvantage SixVirtualAcorn

    Dealers:
    CJE MicrosAPDLCastlea4X-AmpleLiquid SiliconWebmonster

    Usergroups:
    WROCCRONENKACCIRUGSASAUGROUGOLRONWUGMUGWAUGGAGRISCOS.be

    Useful:
    RISCOS.org.ukRISCOS.orgRISCOS.infoFilebaseChris Why's Acorn/RISC OS collectionNetSurf

    Non-RISC OS:
    The RegisterThe InquirerApple InsiderBBC NewsSky NewsGoogle Newsxkcddiodesign


    © 1999-2009 The Drobe Team. Some rights reserved, click here for more information
    Powered by MiniDrobeCMS, based on J4U | Statistics
    "It does appear that inaccuracy is drobes [sic] house standard at the moment"
    Page generated in 0.0955 seconds.