Amiga Bus Peripherals

ONBoard 1200ex

> Company: RBM Digitaltechnik, Germany
> Date: 1997
> Amiga: A1200
> Interface: trapdoor slot
> Autoconfig ID: ID3855 / 1

Zorro Busboard
5x 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

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