-4
Timer)
Device
C h a n n e l s
Clock
Mode
C h a n n e l
C h a n n e l
C h a n n e l
C h a n n e l
I n t e r r u p t i o n
[
Hardware Specifications
CTC
4 Channels (Channel
Channel
4
MHz at
Timer
Mode
Counter Timer Mode
8 b i t s P r o g r a m m a b l e T i m e r
Baud-Rate setting
of
Serial I/O Channel-A
Baud-Rate setting of Serial
I/O Channel-B
8 b i t s P r o g r a m m a b l e C o u n t e r T i m e r
B r e a k - o u t o f I n t e r r u p t i o n V e c t o r a c c o r d i n g
to
demand
of
each channel
Z e r o C o u n t
Time
Out
C P U
Device
Word Size
Processing Method
Commands
i
.
I'
CPU (Clock: 4
8 b i t s / b y t e
8 bits parallel binary
1-4 bytes/command, commands-158
Memory
Device
Use
ROM:
ROM
RAM: Dyn
4K bytes
RAM 64K
bytes (64K bits x 8)
ROM: Initial Program Loader (IPL X/O
Control Program)
RAM: Main Memory o
f
64
K
bytes used
for
user's progra mmab
area.
Memory to Memory, Memory to I/O
DMA Transfer
Floppy Disk Drive
5.25" two-sided double
density x 2 units
b y t e s / d i s k d r i v e
1 2 8
18 sectors/track
Type of
Disk
Drive
Capacity
D a t a B y t e s / S e c t o r
Sectors/Track
D M A
Device
Mode
Functions
DMA
Byte (cycle
steal)
Burst
Mode
Data transfer
between 2 Ports (I/O or
Memory),
Search of 8 bits data
Cylinders/Disk
Drive
4 0 c y l i n d e r s / d i s k d r i v e
Tracks/Disk Drive
Recording
Method
Recording
Density
80 tracks/disk
drive
(Track
0, Side 0 FM method)
2938
(FM),
5876
(MFM)
co
mbin
of
data transfer and data .
se arch
between
2 Ports.
Channels
channel (2 Ports)
Use
Floppy disk
drive
Serial I/O Port
Parallel I/O Port
Memory
. Track Density
48
TPI
Rotational Speed
300 RPM
Data Transfer Rate
Break-Out of Interruption Vector
according
t o c o n d i t i o n s
Interruption
Transfer
Method
DMA Transfer
Average of Access Time
100
End of
data
transfer
Average of Seek Time
9 3
Matching at data searching