SCSI Controller

ID #4353

XEL: XEL Memory Expansion Hard Disk Interface

Connection: Side Expansion Slot

XEL
XEL

Hi Res Version, XEL - 301K
Image of PCB, Front - 572K
Image of PCB, Back - 593K

It appears to connect to the side expansion slot of the A500/+ and A1000 and provides it with additional memory and a hard disk interface. Although it's not certain how you connect a hard drive to the unit, it does have a 26pin header which perhaps connects to an external SCSI disk box. The unit supports up to 2MB of additional RAM in the form of socketed 20pin DIP DRAM chips, which can be configured via the use of two jumpers.

Jumpers

A[][]
B[][]
(down side/side expansion slot connector)

A B RAM
OFF OFF 0K
OFF ON 512K
ON ON 1MB
ON OFF 2MB

Contributions to this page by:
Takahasi Kasiko

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Last update: 2009-01-29 11:18
Revision: 1.0

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