Tandy 1000 Technical Reference Manual

Tandy 1000
4-2-4. Initial Setting of SKA
Technical Reference Manual
Following initial setting is required for operating the SKA.
Note: Use matched SKA for the Fo-S4 series. The SKA for the Fo-S4
has 4300 terminator at the interface receiver which is different
from that conventionally used 1500 terminator for the Fo-5S
series. As to the other performance, SKA for the Fo-S4 and for
the FD-55 are the same.
The SKA for the Fo-54 series can also be used in the Fo-SS series.
4-2-4-1. Cable connection and setting of power supply voltage
(1) Set the output voltage of DC power supply to +12V and +SV, approx.
(2) Turn the DC power off and connect the power cable to the PSA (SKA PWR)
connector of the SKA.
(3) Set the FD PWR switch of the SKA to the OFF position.
(4) Connect the FD PWR OUTPUT of the SKA and the FDD with the SKA/FDD power
cable.
(5) Connect the SKA/FDD interface cable. Pay attention to the identification
mark of the connector (V) so that it locates at the pin 1 and 2 side.
(6) Connect the check cable *1 (Flat cable, 7P connector at the FDD side
and 5P connector at the SKA side) between the terminals 1 ~ 5 of the
SKA and TPI ~ TP6, G of the FDD. For the SKA side, be sure to match the
pin numbers of the connector housing and the terminal numbers of the
connector. For the FDD, cable connection side pins should be connected
to the TPI ~ 5 side.
(7) Connect the check cable *2 (shield cable is used partially, SP connectors
- 4018 -

Tandy 1000 Specifications

General

Processor	Intel 8088
Processor Speed	4.77 MHz
RAM	128 KB (expandable to 640 KB)
Operating System	MS-DOS 2.11
Manufacturer	Tandy Corporation
Release Year	1984
Storage	Single or double 5.25" floppy disk drive (360 KB), optional hard drive
Sound	Tandy 3-voice sound
Ports	Parallel, Serial
Graphics	CGA (Color Graphics Adapter)
Graphics Modes	320x200, 640x200