Digital PDFs

DEC-12-UZSA-D

2000

6 pages

Original

0.4MB

Document:	MAGSPY
Order Number:	DEC-12-UZSA-D
Revision:	000
Pages:	6
Original Filename:	https://svn.so-much-stuff.com/svn/trunk/pdp8/src/dec/dec-12-uzs/dec-12-uzsa-d.pdf

OCR Text

MAGSPY

A MOVING WrNDOW FOR SCANNING LINC-TAPE

Order DEC-12-UZSA-D from Prdngram Library, Digital Equipment

Corporation, Maynard. Mass. 01754

Price $1.00

Direct comments concerning this document to:

Software Information Service
Digital Equipment Corporation

Maynard, Massachusetts 01754

ABSTRACT
This program provides a moving window for scanning data stored on a

LINC-tape.

The dafa h scanned

on the PDP-12 scope at a rate determined by the setting of the Ana fog -Digital Knob 7.

The dcto can

be interpreted as waveforms or as packed ASCII characters.

EQUIPMENT REQUIREMENT
The minimum configuration is the PDP-I2A which consists of the LINC-tape drive, A-D

circuits.

Teletype, Scope, and 4K of core.

OPERATING PROCEDURE
1

START Dial:
a.

Stop the processor, by pressing STOP.

Press

With 0701

I/O PRESET.
in the Left

DO switch.
d
2.

Switches and 7300 in the Right Switches, press the

Upon termination of tape motion, press START 20.

CALL MAGSPY:
a

Type:

-LO MAGSPY, unit J
where unit signifies the tape drive unit containing the LINC-tape with MAGSPY
its file.

(If

If the

"NO" appears, check your index for MAGSPY by typing:
,

then -^DX, umf

)

processor halts with the Program Counter equal to 7576, press I/O PRESET

and START 20.
3.

PROGRAM TITLE SLIDE:

The program initially displays PROGRAM "MAGSPY'^ (DIGITAL EQUIPMENT

CORPORATION) for a

short period of time, then proceeds to the initial option
questionnaire (no operator action required).

OPTION SELECTION SLIDE:
a

The user now can type in one of the following options:
I

To display the Explanation Slide

To display the Block/Unit questionnaire Slide

To return to the DIAL System.

RU80UT

To erase the previously fyped character.

After the desired entry has been typed, press LINE FEED to execute the desired

option
5.

EXPLANATION SLIDE (Option 1):

Selection of Option One displays the various switch settings and waits for the operator to type a LINE

FEED or RETURN indicating that he has read the displayed slide.
6.

BLOCK/UNIT QUESTIONNAIRE (Option 2):

Type in the starting tape Block Number (BN), which may be 0 to 777.
so that

BN 7 may be typed by: 7 i , 07 ) or 007 }

press the

Leading zeroes are not required

Upon observing the correct BN on the scope,

RETURN (J) key.

Type in the tape drive number - which may be 0 through 7.
scope, type LINE FEED to begin displaying tape blocks.

If the

correct entry is observed on the

(This is the issue version of

QANDA - see

Document DEC-12-FISA"D for operational details.)
7.

CALL DIAL (Option 3):

This option recalls the DIAL system into core without using the Left, Right,

DO, and START 20 switches.

This option may also be used anytime during program execution by restarting

MAG SPY.

RESTART:

To restart MAGSPY In order to select another option, tape drive, or initial starting Block Number:

Press STOP

Set 4020 in the Left Switches

Press START LS

WAVEFORM DISPLAY:

This option is in effect whenever Sense Switch 0 is pressed.
as vertical coordinates for a point display.

character mode.

The data on the tape blocks Is Interpreted

The Unit and Block Number display Is Initially in full-size

However, It may appear in half-size character mode if this was the last mode when

returning from TEXT Display.

The vertical line marks the division between blocks.
the Analog-Digital

of the tape

Knob 7 counter-clockwise.

To display increasing tape Block Numbers, turn

A clockwise rotation will move toward the beginning

A center position ha Its the display

Waveform examples have been stored on your tape under a Source Program called TESTDATA. Do not
attempt to add this to the working area of the DIAL System since it doesn't meet the criteria for a

To move TEST DATA fo another tape wifhout copying the entire tape:

program.

Create a dummy source file by adding long source programs until you have a 46 block
program filed on your tape.
a

Note the starting Block Number and copy 46 blocks from your tape to the new tape by

using the command:

-CP )

Relative

Block

No.

Contents

00-01

a continuous (two block) FM waveform

02-03

a continuous (two block) 0.7 ms filtered (20-650 cps) waveform

04-05

a continuous (two block) 0,4 ms filtered (20-1300 cps) waveform

^0-11

Q continuous (two block) low pass filtered (600 cps) waveform

^2-13

a continuous (two block) low pass filtered (1200 cps) waveform

^^""^5

a continuous (two block) low pass filtered (2400 cps) waveform

16-17

a continuous (two block) 500 cps burst

20-21

a continuous (two block) IKc burst

22-23

a continuous (two block) 2Kc burst

24-25

a continuous (two block) 4Kc burst

female adult ECG

fetal

abnormal looking adult ECG

maternal and fetal ECG

the

33-36

four independent exponential waveforms in order of increasing decay;
each exponential fs one block

Doubly differentiated Gaussian

Singly differentiated Gaussian

Gaussian distribution

15 cps sine wave

4 cps cosine wove

12 cps cosine wave

ECG

last

ECG

cps sine wave

10.

TEXT DISPLAY:

Sense Switch 0 is not pressed, the data on tape is interpreted as packed -ASCII

as an

0162 will appear

"A2" on the scope. When Sense Switch 1 is pressed, the text is displayed ?n full-size mode -

otherwise, data is displayed in half-size mode.

The current Block Number and Unit is displayed at the top of the scope.
end of the current block.

A horizontal bar Indicates the

A carriage return on the tope will create a new source line on the display,

DIAL Sources are stored in packed ASCII.
Rotation of the Ana log -Digital

Knob 7 counter-clockwise will move the display toward the end of the

tape (NB 000 follows BN 777) while rotation in the opposite direction displays data toward the beginning of the tape.

11.

A center position maintains a steady display.

SUMMARY OF ACTIONS:
Action

Procedure

SWO -

im.- ^-

Display data as waveforms

SWO = 0

Display data as packed-ASCII Source

SWl = 0

Display data as small text if SWO =0.

SWl = 1

Display data as large text if SWO =0.

A-D Knob 7 P

Move toward the beginning of the tape

A-D Knob 7 }

Move toward the end of the tape

The above procedures can be changed at will.

However, to call the DIAL system, change tape drive

units, or to advance over a large portion of the tape - the

be used

RESTART procedure, covered earlier, must