Block Diagram - Motorola R-20010 Maintenance Manual

KEYBOARD COL P/0 A 14
3·6
- --------------------------~KE~ Y~BO ~ A~RO ~ RO ~ W~
------------------------------=-==~-=~
7-10, 13
OPTION B OET
12
OPTION A OET
14
OPTO DIR
15
AF BUSENABLE
18
91·98
==-----..LL __
......!~~~~~u ______ _...
11. 23. 24. 26. 33
. ; i ..
,.:;:-~~; ~:::-
! !
~ ~E ~· ~ ~
DATA
DATA
BUFFER
U27
PRINTER
CONTROL
U44
RESET
69
IRQ 70
FIRQ S4
NMI .
58
88
! - s 9
R!W
90
P/0
J1
I
PRINTER I
.Qill........!
I
I
I
DTR 1
CHARACTER GEN Z·AXIS
21
~44
HORIZ CHAR SYNC 30
VERT CHAR SYNC
19
36S30-7•
PROCESSOR BOARD (A14)
01-P29050H001
Figure 14-6. Block Diagram
14-13