HP 4262A Operating And Service Manual page 188

TO 7 FROM
DATA BUS LINE 8 BIT DATA BUS LINE
OF BASIC INST. ¥ C
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A25 HP-1B INTERFACE . A24 COMPARATOR CONTROL s A35 BCD OUTPUT CONTROL
]
--
s
> \ INT PRL/SER SW.
|
H
DATA BUS DRV/REC DATA BUS DRV /REC } DATA BUS DRV/REC DATA BUS DRV INTERRUPT DATA BUS DRV /REC o
FLAG CKT c
uta uIs uis Ui vz ui3 u7 10 —
UsA UlA
v
—=
_ P l
8 bit abit 8bit - 8 bit 4 oi
Ioswus, 14 ¥ 23
D10 OUTPUT HP-1B CONTROL i o 15
: REGISTER REGISTER \ x ONE SHOT !
. ua uo ui2 e LIMIT SWITCH ANNUNCIATOR v !
SELECT CODE REGISTER
x
ui
l 8bit l REGISTER U3 e
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i
2bit
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OV . L B 2
. < DATA BUS DRIVER : : @ To u6 Z SHIFT REGISTERS
HP- 1B IFC -
INT 2 & - 2 uie u7 | u4-uz7 U9 uii-uvi3
> - =
B 2 3
5 z ' DECODER TTL DRIVER FNDICATOR
INTERRUPT o o 8bit s LAMP DRV SR
FLAG CKT 14 g vio U9
o ° ; o v2 \
uzz = = I MULTIPLEXER
o ol 3 . I N
uio Uit o _l
= - | 2bit — a Ji ] N ~7
!
CONTROL
BCD LCR DATA BCD DQ DATA
. INPUT . v RELAY ORIVER ouTPUT ouTPUT
'4;,;. {/, ~r @ 8 RELAYS
¥ comMP U8 KI-K6 Connector J7 Connector JB
LAMP HP-18 BUS DRV / REC e END
DRIVER
7bit |
@ FLAG
u20 vz — us ' -~ — —— - - — —
] P P
4Dbit g 'g _-—— —— —
o @ T {/ N2 {/7 '/'
(=] g
= LIMIT SWITCH
e
5 -
COMPARATOR
HIIN L0 KEYBOARD
HE- 18 O o O O OUTPUT LAMP CONTROL
STATUS N7 SN2
INDICATOR
1NDICATOR HP - IB ["]["]DD[] Connector J6 [ oM ]
L JON N ]
o 38 INST. ADDRESS SW.
— -
-
A 4 THUMBWHEEL SWITCH A 5 COMPARATOR KEYBOARD
A 2 DISPLAY A 3 HP—IB CONNECTOR
8 KEYBOARD
A 25 HP-18 INTERFACE BOARD CAN NOT BE
INSTALLED WITH OTHER OPTIONAL BOARDS
Section VIII
Figure 89
Figure 8-9. Option Section Block Diagram.
8-15