Zorro II is the general purpose expansion bus used by the
Amiga 2000
The Amiga 2000, or A2000, is a personal computer released by Commodore in March 1987. It was introduced as a "big box" expandable variant of the Amiga 1000 but quickly redesigned to share most of its electronic components with the contemporary Ami ...
computer. The bus is mainly a buffered extension of the
Motorola 68000 bus, with support for
bus mastering
In computing, bus mastering is a feature supported by many bus architectures that enables a device connected to the bus to initiate direct memory access (DMA) transactions. It is also referred to as first-party DMA, in contrast with third-party ...
DMA. The
expansion slots use a 100-pin connector and the card form factor is the same as the
IBM PC. Zorro II cards implement the
Autoconfig protocol for automatic address space assignment (similar to the later
PCI technology on the PC).
The prototype "Zorro bus" expansion box for the Amiga 1000 was the basis for the initial Amiga 2000-A model design. This box connected to the Amiga 1000 unbuffered CPU bus card edge connector.
Zorro II was succeeded by
Zorro III
Zorro (Spanish for 'fox') is a fictional character created in 1919 by American pulp writer Johnston McCulley, appearing in works set in the Pueblo of Los Angeles in Alta California. He is typically portrayed as a dashing masked vigilante who ...
, a 32-bit, asynchronous bus.
Memory map
External links
Amiga Hardware Database- Descriptions and photos of Zorro II cards.
Discussion about speed of Zorro
Zorro II
Computer buses
Motherboard expansion slot
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