LINE PRINTER CONFIGURATION
There are four types of line printers available
at four different printing speeds and with either a
64-or 96-ASCII character set. All type printers
offer I 36-column printing and provide for vertical
spacing of six or eight lines per inch. PRF910 I
Vertical Format Unit (VFU), available as an
option for all type printers offered, allows paper
spacing to be controlled by a 12-channel paper
tape to greatly increase format flexibility.
The four types of printers configured for Level
6 system use are shown in Table 7-1. Specifica
tions and prime printer characteristics are des
cribed in Table 7-2.
The line printer interfaces with the system bus
of the Level 6 processor by means of the MDC
(Multiple Device Controller) and line printer
adapter. The MDC9101 controller is a firmware
driven microprogrammed peripheral controller.
Multiple MDCs can be attached to the Level 6
bus, and multiple like adapters and devices can be
attached to any MDC. However, no more than
four peripheral adapters can be attached to any
one MDC. Both the MDC91 Oland PRM91 0 1 are
plug-in printed circuit boards. The MDC contains
the circuitry necessary to support the device
adapter connections. All hardware pertinent to
the printer is contained in the line printer
adapter. Through its adapter, each attached line
printer presents a DMA (Direct Memory Access)
interface to the Level 6 processor. See Figure 7-2.
MDC 9101 SINGLE BOARD
_ _ _
ONE ADAPTER PER DEVICE
MAXIMUM CONFIGURATION OF
FOUR PERIPHERALS PER ONE
L _ _ __
LINE PRINTE R
Figure 7-2. Line Printer System Configuration
TABLE 7-2. LINE PRINTER SPECIFICATIONS/CHARACTERISTICS
COLUMNS PER LINE:
LINE ADVANCE SPEED (ONE LINE):
PAPER SLEW SPEED:
FORMAT TAPE PUNCH:
Print one line and space from 0-15 lines or to head-of-form; print and
space according to PRF9l 01 Vertical Format Unit; advance paper
only according to either of the above ways.
PRU9103 - 240lpm,PRU9104 - 3001pm,
PRU910S - 4801pm,PRU9106 - 600lpm
PRU9l03/9l04, SOms (max.); PRU91OS/9106, 2Sms (max.)
PRU9103/9104, 20ips (min.); PRU91OS/9l06, 2Sips (min.)
6-or 8 lines per inch
PRU9103/910S - 96-character upper and lower case ASCII set;
PRU9104/9106 - 64-character standard ASCII set
Standard fanfolded and edge-punched; 4in. to 16.7Sin. wide (10,1 to
SO,4cm), with 4 in. to 24in. (10,1 to 60,9cm) between folds.
With PRF9101 option present, distance between paper folds may be
varied from 4 in. to 24 in. (10,1 to 60,9cm) at 6 or 8 lines per inch
Weight - for single copy: IS1b bond (6,72kg) min.
For up to six copies: 12lb bond (S,Skg) min.
Maximum form thickness -
M3910 or M3916
4Sin. (114,3cm) high; 33in. (83,8cm) wide;
22in. (SS,8cm) deep.
Weight - 340 lb. (154,2 kg)