Sold A2090 scsi/hd controller with manual

[Exilent]

A2090

[TABLE="class: basedata"]
[TR]
[TD]Company
Commodore, USA [/TD]
[TD]Date
1987[/TD]
[TD]Amiga
A2000, A3000, A4000
[/TD]
[TD]Interface
Zorro II
[/TD]
[TD]Autoconfig ID
514 / 1
515 / 3
[/TD]
[/TR]
[/TABLE]

• 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)

Asking 25 euro + postage.

UNTESTED!

 

[Exilent]

BUMP!

 

[graz]

Declaring interest pending shipping to US. PM on the way.

 

[Exilent]

Payment received

 

[graz]

Received and looking good. Feedback left. Thanks!