|
Click on the picture to see the motherboard ( large
size, 322 kb )
( if your browser doesn't open it then use mouse right-click and
the menu item "open link in new window" or use
this link now )
 You
can also point to an element on the motherboard to read an information
by a tooltip.
| Technical data of the MZ-40K mainboard |
| CPU |
SHARP MB8843,
4-bit CPU |
| Clocking rate |
1.7897725 MHz ( divided by 2 by 7493, IC 4, input
from crystal 3.579545 MHz ) |
| Storage |
ROM |
1K x 8 bit mask ROM
( internal CPU ROM contains OS ) |
| RAM |
64 x 4 bit CPU-internal static RAM ( data
memory )
Two external chips MB8101
1024-bit ( 256-word by 4-bit ) static RAM ( program memory ) |
| Video output |
Four 7-segment LEDs GL-8P04, red, 10mm height
multiplexed by the internal CPU-timer |
| Sound output |
by loudspeaker for one voice ( 1 tone generator build
by the timer )
max. 400mW ( by IC1 LM390
or LM388 )
volume control by the inbuilt variable resistor with combined on-off
switch for the MZ-40K power |
| Timer |
internal CPU-timer 8-bit programmable
2 modes
up-counter
clock in 223.722 kHz ( divided by 2 by the 7493
IC 4 and by 8 by the 7476
IC 3, input from crystal 3.579545 MHz ) |
| Clock |
internal by CPU,
24 hours can be displayed |
| Keyboard |
22 multi-function keys ( type ML-3 ); they have the following
functions:
16 hex keys ( $0 - $F )
20 musical note keys ( Mi, Fa, Fa#, Sol, Sol#, La, La#, Ti, Do,
Do#, Re, Re#, Mi, Fa, Fa#, Sol, Sol#, La, La#, Ti )
6 function keys:
ADR to set the address for read data from or write data
into the program memory
READ to display the contents of the program memory
WRITE to enter data into the program memory
CLEAR to clear an invalid address typed in by the user
RUN to start a program
STOP to stop a running program
|
Additional
inputs |
Game switch ( micro switch, press: start; release: stop running,
e.g. roulette or cube )
Telephone accounting by 4 jumpers ( range 1 to 15, 1 - 2 - 4 -
8; start and stop manually when the call starts and stops - result
is MZ-40K displays the costs )
2 option jumpers for option 1
|
| Power |
Internal voltages generated by the input of max. 10.5V
AC, 50 / 60Hz:
5V DC unregulated for the LEDs
5V DC regulated
5V AC 50 / 60Hz ( clock, 24 hours ) |
| Temperatures |
operating temperature: more than 5 degrees Centigrade |
| Dimensions |
width 275 mm, height 50 mm, depth 280 mm |
| Weight |
0.73 kg |
| Accessories |
Operating manual, power supply, 2 program sheets (
games ), 1 programming card |
| Additional options |
Option 1
( MZ-40K1 ) |
The Sensor option consists of 6 additional sensors ( 3 micro switches,
1 magnet sensor with REED switch, 1 water-level sensor, 1 photo
sensor ) connectable by 6 jack plugs ( diameter 2.5mm ) |
Option 2
( MZ-40K2 ) |
Organ keyboard with 32 keys for 3 octaves |
|
sharpmz@sharpmz.org
