CHAPTER
3
FUNCTIONAL SPECIFICATIONS
3.1
Logical Specifications
3.1.1
CPU
(1)
Available CPU
A
80C85 is used at
2.4
MHz.
(2)
How to Reset
There are two kinds of reset: power on reset and
mani~al reset.
Pushing the reset
switch initiates
a
warm-start: pushing it while pushing
a
shift-key and a control-key.
initiates a cold-start.
3.1.2
ROM
(1)
Available ROX1
Available KOXI is ChlOS ROM, and the capacity is 37,K byte.
(#0)
(2)
User ROM
A
user ROM is 32K byte. The user Rob1 area is equipped with an IC socket which
can be equipped with
CbIOS Kohl. (#I)
3.1.3
RAM
(
1) Available RAM
Thc eight 2li-byte CMOS 1Cs arc used as
RAM.
The system comes with l6K bytes
(STDRAM
).
(2)
Optional RAhl
The
PC-8201 is equipped with
IC
sockets for twenty-four 3K-byte CMOS ICs.
48K bytes. The first
16K
bytes of this area are combined with the standard
16K byte
RAM
to make a 32K byte
RAhI
area. The remaining 32K bytes, become
RAhl
#2.
There is also a 32K-byte
RAM
cassette ($3) port for external
memory.
It call be connected with a system bus oulput in PC.
1
1
-M
q;lRAM
CASSETTE
Wr~te
protect
0000
5witrh
lo~:ionl loptlonl loptfion)
Memory Configuration
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