Intelligent Interfaces - Support - RISC OS - Expansion Cards

	INTELLIGENT INTERFACES

This product has been discontinued.

The Intelligent Interfaces version of the I/O_Podule module for RISC OS 3.1 and later provides the same OS_Byte calls for accessing the 1MHz Bus, User Port and Analogue to Digital Converter as the BBC Microcomputer operating system.

In addition, a number of new software interrupts (SWIs) have been introduced to simplify the use of interrupts from the User Port 65C22 Versatile Interface Adapter (VIA) in programs written in Assembler.

The original Acorn I/O_Podule module handled interrupts from the Analogue to Digital Converter by claiming the IrqV software vector and implemented the additional OS_Byte calls provided by the module by responding to the UKByte (Unknown Byte) service call. The RISC OS 3.1 Programmers Reference Manual states that both these methods are deprecated.

The Intelligent Interfaces version of the I/O_Podule module claims the expansion card device vector to handle interrupts from the Analogue to Digital Converter and claims the ByteV software vector to implement the additional OS_Byte calls provided by the module. This increases the compatibility of the I /O Expansion Card with other expansion and network interface cards.

Download the Single Width I/O Interface Expansion Card User Guide (pdf format) to learn how the software is used.

Download the II74 26 Bit Version 2.03 of the I/O_Podule Module and associated software.

Download the IM74 26/32 Bit Neutral (IYONIX pc compatible) Version 3.00 of the I/O_Podule Module and associated software.

II75 Single Width I/O Expansion Card