Search Result
5 expansions found
Company
Commodore, USA
Date
1987
Amiga
A2000, A3000, A4000
Interface
Zorro II
Autoconfig ID
514 / 1
515 / 3
    SCSI and ST-506 controller
  • supports seven SCSI and two ST-506 devices at once
  • the SCSI drives are controlled by the WD 33C93 IC
  • the ST-506 drives are controlled by the Zilog Z80B CPU
  • the 33C93 chip can be controlled by either the 68000 (default) or by the Z80
  • DMA transfers are provided by the custom Commodore 8727 IC featuring a 64 byte FIFO buffer
  • the Z80 CPU has 2 kB RAM to buffer commands from the Amiga, 8 kB PROM with driver routines and 1 kB RAM for storage of variables
  • cannot autoboot
  • does not support the SCSI Direct protocol
  • does not support partitions and drives larger than 256 MB
  • the ST-506 interface does not support 16-head drives
  • 50 pin internal SCSI connector
  • DB25 external connector
  • hard disk activity LED connector
  • on Zorro III machines the card only works if the driver and all the buffers are loaded into chip RAM
  • A-Max II driver (hddisk.amhd)
Commodore A2090 -  front side
front side
Commodore A2090 -  back side
back side

Company
Commodore, USA
Date
1988
Amiga
A2000, A3000, A4000
Interface
Zorro II
Autoconfig ID
514 / 1
515 / 3
    SCSI and ST-506 controller
  • supports seven SCSI and two ST-506 devices at once
  • the SCSI drives are controlled by the WD 33C93 IC
  • the ST-506 drives are controlled by the Zilog Z80B CPU
  • the 33C93 chip can be controlled by either the 68000 (default) or by the Z80
  • DMA transfers are provided by the custom Commodore 8727 IC featuring a 64 byte FIFO buffer
  • the Z80 CPU has 2 kB RAM to buffer commands from the Amiga, 8 kB PROM with driver routines and 1 kB RAM for storage of variables
  • three autoboot ROMs
  • custom bootblock design
  • does not support the SCSI Direct protocol
  • does not support partitions and drives larger than 256 MB
  • the ST-506 interface does not support 16-head drives
  • 50 pin internal SCSI connector
  • DB25 external connector
  • hard disk activity LED connector
  • on Zorro III machines the card only works if the driver and all the buffers are loaded into chip RAM
  • A-Max II driver (hddisk.amhd)
    hard disk kits
  • the A2090A was sold in kit form which included the controller itself, a hard disk, cables, installation disk and manual
  • A2092: A2090A bundled with a 20 MB Miniscribe 8425 hard disk
  • A2094: A2090A bundled with a 45 MB Toshiba MK-134FA or a 46 MB Rodime RO-3055 hard disk
  • all of these hard disks are ST-506 drives
Commodore A2090A -  front side
front side
Commodore A2090A -  front side
front side
Commodore A2090A -  back side
back side

Company
Commodore, USA
Amiga
A2000
Interface
Zorro II
Autoconfig ID
514 / 4
    autobooter
  • provides autoboot functionality for the Commodore A2090 SCSI controller
  • two autoboot ROMs

Company
Combitec, Germany
Date
1989
Amiga
A2000, A3000, A4000
Interface
Zorro II
    autobooter
  • provides autoboot functionality for the Commodore A2090 SCSI controller
  • two autoboot ROMs
  • autoboots with Kickstart 1.2 and 1.3
  • supports FastFileSystem
  • replaces the drive request procedure of the A2090 - no 8 seconds wait for drives to show up
  • checks for bootable drives in the following order:
    • 1st ST506 drive
    • 2nd ST506 drive
    • 1st SCSI drive
    • 2nd to 7th SCSI drive
  • can be disabled with jumper or by holding the right mouse button during startup
  • works with the A2090A (if A2090A autoboot ROMs are removed)
Combitec AutoBoot-Karte -  front side
front side
Combitec AutoBoot-Karte -  back side
back side

Advert (DE)
1989-08

Advert (DE)
1989-10

Company
Pro-Computer, Germany
Amiga
A2000, A3000, A4000
Interface
Zorro II
    autobooter
  • provides autoboot functionality for the Commodore A2090 SCSI controller
  • two autoboot ROMs
  • autoboots with Kickstart 1.2 and 1.3
Pro-Computer Promigos Autoboot -  front side
front side