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

Profile for littlebird

ContactAbout me
Email:
harrycatbeen@gmail.com
ICQ:
AOL:
Yahoo:
Username: littlebird
Realname: little bird
About me:
Homepage:
Face/Logo:
Comments posted:1 (show all)

Recent comments

On More Vpod rumours surface:

I've used a UNI-Pod and still do. As long as the latest software was installed, it fixed all the filer issues the early stuff had and it's still going strong. It was a few years ago but I did some experimenting and did get the internal 8 bit expansion working with an Econet module, sound sampler and SCSI interface. It was a hack to get the software working but all it took was to change the address offset from the default Econet address to point to the card and a patch to the drivers to fiddle with the IRQ mapping. The podule seems to have multiple IRQ sources and there were registers to enable the expansion FIQ/IRQ to the podule bus. Although it had an FIQ pin, it appeared as just another IRQ. I chose the podule base offset address according to slot number and the podule access cycle needed for the devices on the "econet" modules. For the sampler and econet, I worked out which pins were connected from the module to the the 15 way back panel connector and wired up a plug to suit. Worked quite nicely. I assume that this is the "parallel port" mentioned in previous comments?

I found my old notes the other day - original hard drive long gone - and the more technically inspired users might find this of interest:

Expansion socket base offset &3A00 A0 of the slot was connected to LA2 of the bus and so on. IRQstatus &3C00 IRQraw &3C80 IRQmask &3D00

status was the masked IRQ = raw AND mask

I worked out that the expansion "FIQ" mask bit was bit 7 and the IRQ mask bit was on bit 1. Bit 0 appeared to be the global podule IRQ. Whenever I played with bit 0 of the IRQmask, bad things happened ;-) The other bits appeared to be for the IDE, network and USB. It goes without saying that a read/modify/write was needed with IRQs off to change any of the mask bits.

Back on topic, I for one am looking forward to seeing exactly what's on the new V-POD. If naming is anything like the UNI-Pod (usb, network, ide) then I vote that V is for Video ;-)

 is a RISC OS Userlittlebird on 18/4/09 1:43PM
[ Reply | Permalink | Report ]

Search the archives

Today's featured article

  • A9home beta will give Ad6 some breathing room
    Analysis of the A9home beta release [Updated]
     39 comments, latest by jess on 25/05/05 2:41PM. Published: 22 May 2005

  • Random article

  • Should the TCO of RISC OS be higher?
    Show us the money
     61 comments, latest by datawave on 16/06/05 5:07PM. Published: 17 Feb 2005

  • 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
    "Interesting, what kind of information is spread here? Some people must have really close contacts with insiders in certain companies"
    Page generated in 0.1755 seconds.