Nur englische Beschreibung vorhanden:
A4000 5 channel serial controller
- contains five Motorola MC68605 X.25 Protocol Controller chips
- these chips are designed for long-distance communication over phone lines or satellite links
- each chip supports full-duplex serial communication at up to 10 Mbps
- a Zorro II single channel version exists of the card, called "A2000 serial interface"
A4000 DPM output controller
- contains a Motorola MC68450 DMA controller and an IDT high-speed dual-port static RAM chip
- a Zorro II version exists of the card, called "A2000 remote DMA output controller"
A4000 video & callup interface
- contains a Motorola MC68450 DMA controller and two IDT high-speed dual-port static RAM chips