Amiga scasi controller sold as is

extra ram included on board

Manufacturer

Commodore, USA

Date

1991

Amiga

A2000, A3000, A4000

Interface

Zorro II

Autoconfig ID

514 / 2,3,10

SCSI controller

Western Digital 33C93

uses the same DMAC custom chip for DMA transfers as the A3000

knows the Rigid Disk Block and SCSI Direct protocols

built in XT IDE (8 bit) hard disk controller - the connectors and LED are not installed but their place is visible on the card

50 pin internal SCSI header

DB25 external connector

a 3.5" hard disk can be mounted on the card

16 kB autoboot ROM (can be disabled) - autobooting requires at least Kickstart 1.3

revision 7.0 of the ROM is necessary for 68040 machines

supports SCSI network sharing

supported by Linux, NetBSD and OpenBSD

A-Max II driver (scsi.amhd)

memory

sixteen DIP sockets accept 0.5, 1 or 2 MB RAM

supports 256k×4 (44256) chips, 120 ns or faster

cannot use DMA to transfer data to 32 bit fast RAM

if Zorro II DMA memory is not available the driver falls back to programmed I/O transfers

performs extremely slow in the A4000 because of the above mentioned two proble