Description

The Spectravideo SV-605 is a super expander allowing to extend the SVI-318/328 computers with four special cartridges.

Only the following cartridges can be used with this expander:

SV-701 modem
SV-803 16kB RAM expansion
SV-805 RS-232C interface
SV-806 80 column adapter
SV-807 64kB RAM expansion
SV-8?? Hard Disk controller
SV-820 I/O interface
SV-827 modem for Datavision (Swedish Videotex)
SVI-809 LAN interface

Besides, it has

two built-in interfaces: Centronics interface for printer and disk drive controller
at least one internal disk drive
a modulator or monitor cable

The power supply transformer is internal, but can be installed outside the expander.

The package includes several manuals and two diskettes with SVI Disk BASIC and CP/M 2.20.

Versions

There are 3 versions of this expander, with also variations:

SV-605 with only one single sided 160kB or double sided 320kB 5.25" floppy disk drive - there is a free location to install the SV-905 or SV-906 disk drive as second drive
SV-605A with two single sided 160kB 5.25" floppy disk drives
SV-605B with two double sided 320kB 5.25" floppy disk drives, or with one double sided 320kB 5.25" floppy disk drive and a 10MB Seagate ST-212 SASI MM (WD1002-SHD) hard disk drive with its controller

The SV-605B with hard disk drive was also sold under the reference SV-608M with the 80 column adapter installed and the MicroPro software on disk: Calcstar, Datastar, Mailmerge, Reportstar, Wordstar.