Closed cheap zorro 2 card

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johnim

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hi i need a very cheap £10-15 uk only for postage zorro 2 card to test my
RBM OnBoard 1200ex Zorro-II Busboard
i am waiting for off the other bay
also does anyone know much about this other than whats on the http://www.amiga-hardware.com/ website
thanks
 

Zetr0

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Hiyas John,

Alas I dont have a spare Z2 card I sell or even lend at the moment, however I might be able to help a bit with some information about this RBM Onboard adapter

  • Zorro busboard
  • 5× Zorro II slots
  • does not support DMA - many SCSI cards are ruled out
  • does not comply with the Zorro II specifications:
    • /XRDY (External Ready - used for adding wait states) is halfways implemented
    • /OVR (/DTACK Override - used for delaying Zorro bus cycle termination) is not implemented at all
    • as a side effect it is possible to achieve 2-cycle Zorro accesses - faster than other Zorro boards if the card can take advantage of it
  • optional extended video slot - VidiON ex module
  • a Zorro III upgrade with A4000 style CPU slot (TurboON 32) was planned but never realised
  • connects to the trapdoor slot - the connector is passed through for accelerator cards
  • the board is part of the RBM Towerhawk 1200 IIex tower system
heres the manual for the adapter (thanks to amiga.resource.cx)

its quite an interesting Z2 board, it has known issues with some Z2 cards but by and large it should prove interesting to play with.

So whats you overall build plans for your Amiga?
 

keropi

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Had one of these 1200ex busboards... IIRC I could run a picasso2 rtg on it, and IIRC I also had a kickflash+subway combo.... the kickflash I did not use but the subway worked...
 

johnim

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thanks for the info guys
@zetro i have a mediator system and i found this so i would see what zorro offerd me even tho i have a stock a2000
 

johnim

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can this be closed please
have a trump card and a GVC A4000-HC+8 SCSI RAM Card also a VLAB Y/C
 
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