User manual

external Qbus is visible to the emulated CPU and can be used in a combination with the

emulated devices.

This example is based on the BCI-2104 Qbus adapter board from The Logical Company.

Note that the BCI-2104 is end of life as it does not meet the RoHS environmental

requirements, and this implementation is only provided as a demonstration example.

The CHAPI_QBUS device is provided in binary form. A source code listing can be

provided by on special request to assist in the development of interconnections to a

physical Qbus or to (emulated) devices that represent themselves as a Qbus segment.

Chapter 5 provides more information about the development of such bus connection.

The CHAPI_QBUS device is loaded and configured as follows:

load chapi chapi_qbus dll=chapi_qbus.dll trace_level=<trace_level>

set chapi_qbus adapter_dll=chapi_hw

set chapi_qbus adapter_name=bci

set chapi_qbus adapter_instance=0

set chapi_qbus adapter_options=””

where:

• dll and trace_level parameters are common for any CHAPI device;

• adapter_dll – is the name of DLL from which to load a specific low level bus adapter

model. If this parameter is omitted, 'chapi_hw' is used as default;

• adapter_name – is the name of the low level bus adapter implementation to load from the

specified DLL library; If this parameter is omitted, bci is used as default;

• adapter_instance – is the instance number of the bus adapter to use, when a number of

adapters are installed on the PCI bus. If this parameter is omitted, the first instance (0)

is used as default;

• adapter_options – any option to be passed to the specified low level bus adapter

implementation. No options are defined for the BCI-2104 adapter connection in the

chapi_hw DLL. If this parameter is omitted, an empty string is used as default;

QBUS adapter based on PCIS3BASE PCI board

A generic Qbus extension, the CHAPI_S3QBUS device is implemented in the

CHAPI_S3QBUS.DLL and uses the CHAPI.DLL and the FPGA design binary file