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Alto Hardware Manual
73
APPENDIX K - OPTIONAL ALTO PERIPHERALS
This appendix· lists hardware items that have been interfaced to the Alto in quantities greater than one.
EOD/SPG is the source for information about many of these interfaces and devices, and may be willing to
contract to provide necessary hardware. Sources in PARe are not committed to producing any hardware.
No software guarantees are made about any of these devices, except as noted.
HyType Printer. A spinning daisy printer can be ordered from Diablo Systems, Inc.
Arrangements can be made with SPG to build a cable that will connect the printer to
the "printer connector" on the rear of the Alto. No additonal hardware is required,
although printers attached to Alto II are required to be self-powered.
Software:
Bravo prints on the Diablo printer, and a Bcpl subroutine package (DiabloPrinter.Br)
is available to drive the interface.
Versatec PrinterlPlotter. The Versatec plotters and printer/plotters can be connected
to the Alto II without additional hardware. Contact SPG to get a cable
(PIN
216540).
Tape Controller.
A two-card processor-bus interface to MDS and Kennedy tape
drives.
It
will handle 1600 bpi phase-encoded tapes only. Contact ASD-South.
Trident Disk Interface.
An interface to the Trident family of disk drives,
manufactured by Calcomp. Alto II owners should contact SPG, Alto I owners contact
PARC/CSL.
Software: The Trident disks may be accessed in conjunction with
Operating-System routines, using the TFS software package (see Alto Subsystems
documentation).
Orbit. A piece of hardware which can be used to drive a variety of SLOT printers
that obey the "9-wire standard ROS interface."
Contact ASD·South.
Extra Ethernets. Up to two extra Ethenets can be installed in an Alto of any vintage.
Contact
PARC/CSL.
Ethernet Repeaters.
Many miles of Ethernet can be hooked together with these.
Contact
PARC/CSL.
ArpaNet
(BBN
1822) Interface. An interface to ArpaNet Imps and Packet Radio Units.
Contact
PARC/SSL.
EIA Interface. An interface to an AMI S1883 UART and an AMI S2350 USRT. Contact
ASD-South.
Communications Processor. Terminates up to 16 lines at many speeds, codes and line
control disciplines.
Contact ASD·South.
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