SITE REQU IREMENTS
The insta Ilat ion site must prov ide floor space at least 47 inches w ide and 28 inches deep to accommodate the parallel drum. At least 9 inches must be provided in front of the cabinet and 15 inches at the back of the cab inet to a II ow open ing of the doors for rna intenance • A source of 115-volts (±17 volts), 60 cycle, single-phase power must be suppl ied by the site. This source must be capabie of suppiying the lO.O-ampere starting surge current and 9.0-ampere runn ing current required by the drum.
Ambient temperature at the installation site can vary between 32 and 105 degrees Fahren-heit (0 to 41 degrees centigrade) without deleterious effect upon equipment operation. For norma
I
operat ion an amb ient temperature range from 70 to 85 degrees Fahrenhe it isrecommended.
Shipping weight of a Type 23 Parallei Drum is approximately 1090 pounds.
SIGNAL AND POWER CONNECTIONS
Signa I connec t ions to the Type 23 Para II e
I
Drum from the PD P-1 D are made at connec tor 2C01 on the plug panel at the front of the machine. Signal connections to the drum from the memory control are made at connectors1
EOl and1
E02 at the front of the machine. To mate with these connectors, a cable should conta in an Amphenol connector of the 115-114P series with a housing 1391 and wire clamp 3057. Signal cable I·ength should not exceed 25 feet. The input and output signals are defined in Tables 3-1 and 312 and their wiring connections are given on sheets 1 and 2 of the engineering drawing A-24614. Data connections to the drum from the memory control are made to the back of the Type 1665Pulsed Bus Transceiver at location 1 H24. The data cable must be 18-conductor coaxial, term inated in a Type 1031 or 1032 module.
A grounded, three-wire power cable is permanently attached to the machine. A standard 3-prong male power plug at the end of this cable allows connection to a power source 18 feet from the cabinet.
CONTROLS AND INDICATORS
Manual control of the parallel drum is exercised by means of switches on the indicator panel (lA) and on the field lockout switch panel (2D). Visual indications of the machine status and register contents is given on the indicator panel and the auxil iary indicator panel (2A) shown in Figure 4-1. The function of all machine controls and indicators is given in Table 4-1 .
Control or Ind icator
Figure 4-1 Indicator Panels
TABLE 4-1 CONTROLS AND INDICATORS Function
Indicator Panel
REMOTE ON/OFF/LOCAL ON switch Allows local or remote control of mach ine
TRA ind icator
... I"'h RJ:MO
TCf""\N ..
energlZQlion. n I e L. \ I L '-'I position the machine is energized by a contact closure in the computer. The OFF and
LOCAL ON positions function as a normal power sw itch.
Lights to acknowledge rece ipt of DC L trans-fer lOT pu Ises and ind icates that the drum
is waiting for the drum counter to arrive at the starting address of the transfer spec ified by the contents at the initial location reg ister.
4-2
Control or
CONTROLS ANO INO ICATORS (continued) Function transferring data with the memory control.
Lights to ind icate the 1 status of the error sync fl ip-flop. Th is fl ip-flop is set at the time the request signai is sent to the memory control and should be turned off within 6 microseconds by rece ipt of an address ack-nowledged signal from the memory control. was started and erroneously interrupted.
Lights to ind icate the binary 1 status of the drum position and a program-added constant.
Ind icates the binary 1 status of the drum break
Control or
CONTROLS AND IND ICATORS (continued)
4-4
register during DWC 10-4 instruction. The contents of the buffer ind icate the wr ite parity formation or check circuits are defec t ive) •Lights to ind icate that the mach ine has det-ected a transfer error in wh ich a transfer was
interrupted before it was comp!eted.
Light to ind icate the binary 1 status of bits in the location register. The word in the location register spec ifies the first address of a transfer.
Light to ind icate the binary 1 status of the word counter fl ip-flops. The contents of the word counters spec ify the number of words to be transferred.
TABLE 4-1 CONTROLS AND IND ICATORS (continued) Control or
Indicator
DRUM COUNTER ind icators
Function
Light to indicate the binary 1 status of bits of the drum counter. The contents of the drum counter indicates the angular position of the drum as divided into 4096 positions. inhibited during writing. Therefore, the in-formation stored in a field cannot be acc i-dentally destroyed by writing new information over that presently conta ined in the field.
Control or Indicator
TABLE 4-1 CONTROLS AND INDICATORS (continued) Function
WR ITE BAD PAR lTV pushbutton Allows the first word of the next transfer to be written with an incorrect parity bit so that a routine can check the operation of the error parity c ircu its. A programmer can use this switch to test his error check programs.
EQUIPMENT TURN-ON AND TURN-OFF
Operation of the Type 23 can be controlled locally by operation of a switch, or remotely from a circuit closure in the computer. Control point is selected at the REMOTE ON/OFF/
LOCAL ON switch on the indicator panel. In normal use this switch is left in the REMOTE ON position. For maintenance operations this switch is set to the LOCAL ON position to apply power and to the OFF pos ition to remove power. Note that the c ircu it breaker on the Type 813 Power Control must be in the ON position to allow either local or remote control of primary power in the parallel drum.
4-6
SECTION 5 PROGRAMMING
The PDP-1D lOT instructions which operate the Type 23 Parallel Drum are listed in Table 5-1.
Octal codes containing XiS indicate bits which are not appl icable and can be either ones or zeros. Octal codes specifying zeros must contain zeros.
Octal Code 72XX61
72XX62
72XX63
TABLE 5-1 INSTRUCTIONS Mnemonic
Code DIA
DWC
DCl
Name and Function
Drum Initia
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Address. load read control, read field buffer, and initial location.C(lO)~
=> C(Read) 1to specify reading
1 1
C(lO)l_5 =>C(RFB)1_5 to select read