MZ-40 Technical data

Technical data of the MZ-40K

MZ-40K motherboard

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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

Power supply

The power supply supplies the mainboard and the display. The AC output of the power supply is used to display the time ( clock ).

 

 

 

  • Therefore, no DC power supply can be used.
Technical data of the external power supply
Input 220 / 240 V AC, 50 / 60 Hz, 11 W
Output 10.5V AC, max. 700mA
connectable to the MZ-40K by a jack plug ( diameter 3.5 mm )
Sensor connectors of option 1 6-diode gate DAP601 IC 9 type 74126 IC 10 type 74126 Volume control with combined on-off switch AC power connector ( 10,5V 700mA ) Loudspeaker Regulator 5V DC 1A type TA87005P Keyboard 22 keys ( 6 function keys, 16 hex keys, 20 notes ) Four 7-segment LED display type GL-8P04 Crystal 3.579545 MHz CPU MB8843 RAM 1 ( type 2101 or 8101 ) RAM 2 ( type 2101 or 8101 ) Option 1 ( sensors ) Option 2 socket ( musical keyboard ) Jumpers for the telephone account display Jumpers to activate option 1 Rectifier 1B4B1 IC 1 type LM390 IC 5 type 74126 Game switch connection IC 6 type 74126 IC7 type 74126 IC 8 type 74157 IC 3 type 7476 IC 4 type 7493 IC 2 type 7404 4-transistor array TA2 type TA76 4-transistor array TA3 type TA76 4-transistor array TA1 type TA60