Epson PC AX Technical Manual page 29

REV.A
PRINCIPLES OF OPERATION
2.1 HAIN SYSTEM UNIT COMPONENTS
The following diagram
sho~JS
a functional block diagram of the EQUITY III+ /
EPSON
pe
ÄX.
1\11 interface c.ircuit except key board interface should be instaIIed on a
option slot.
DMAC
8237x2
ANTA board
CPU
80286
ANT-RM board ANT RM board
,--_M
6_E~_g_~_~
_ ...I
connecJ-t_o_r_....__ c_on-t".1f1 -
:~
I
TI~ER
8254-2
RTC
146818
KEYBOARD
controller
8042(8742)
INTC
8259x2
keyboard
+5
+12
-5
-12
ATRPS unH
Power
supply
unit
SPFG board
Floppy
Parallel
Serial
disk
Printer
communication
interface
interface
interface
~
,
AC outlet
HDD
WHDC board
Hard disk
controller
RS-232C
slots
PRINTER FDD CRT
1
Monitor
adapter
FIGURE 2-1-1. LOGIC BLOCK DIAGRAM
2-1