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i.O
IN"l"RODUCTION
The 02620-60087 Processor PCA perforMs the terMinal logic functions for
the 2622A terMinal.
Its operation is based on the Z80A Microprocessor
and the National SeMiconductor 8367 CRT Controller (CRTC).
The control and
I/O
section of
the
Processor
PCA
provides control
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i
q n
a
1
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,
:i. n
put /
0
u t put
and
d
i~
t a p roc
(~s~:;:i.
n(J
fun
c
t
j. 0
n~:;
.
The
MeM
0
r'
y
section provides 16K bytes of dynaMic
RAM
for display
MeMory,
scratch
pad MeMory and data buffers, and space for up to six 4K or 8K byte RUMs
of
which
32K
are
used
for COMplete
terMinal operation
(8K
of
ROM
optional with
integral
printer).
The video control section provides
all tiMing signals for driving the
sweep circuitry and
video logic as
well as perforMing
direct MeMory access
CDMA)
of
display
data.
A
detailed description of the operation of each of these sections follows
:i. n
~:;ec
t ion
3. 0 .
2.0
OPERATING PARAMETERS.
A SUMMary of operating paraMeters for the Processor Module is contained
in tables 1.0 through 4.0
Table 1.0
Physical ParaMeters
===============================================================================
Par'
t
S i z e
(I...
x W x D)
1
W(~
i q h
t
1
1
NUI"',IHH'
1
NOMf:·~nclatul'~~
1
+/ ....
0.1
Inche~;
1
(Pounds>
1
1=============1==============================1=======================1========1
1
I
1
1
1
1
1
1
1
1
1
02620-60087
1
Processor PCA
1
12.3 x 10.9 x
O.S 1
1.4
1
1
1
1
1
I
1
1
1
1
1
1
1
===============================================================================
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