You can use the kit for to increase teh speed of the MSX computer.
The kit is composed of Z80C0010 - 8MHz, Zilog, electronic circuit and disk test.

        For NMS8245 msx computer
1- Change old Z84C004 with the new Z84C0010.
2- Connect the (-) and (+5) the kit , respectively to ground and
    current of an electronic condenser, for example those in front of
    the dynamic rams.
3- The CK (Clock) pins of the kit has to be connected to the feet of
    exit of R57 resistance that is in front of the VDP.
4- The pin 20 of the Z84 has to be connected to a free diode of the kit.
5- The 2 pin of the secondary slot has to be connected to a free diode
    of the kit.
6- The 87 pin of S-3527 msx-controller has to be connected to another
    free diode of the kit

        For NMS8280 msx computer
1- Change old Z84C004 with the new Z84C0010.
2- Connect the (-) and (+5) the kit, respectively to ground and
    current of an electronic condenser.
3- The CK pins (Clock) of the kit has to be connected pin 6 -Z84.
    The pin 6 is not connected to the mother board.
4- SLTSL1, STLSL2 and IORQ to the 7Mhz diod.
    (SLTSL1 is pin 4 slot 1, SLTSL2 is pin 4 slot 2, IORQ is pin
    11 slot 1 or 2)

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