squarewave mini- keyboard with audiogames
This keyboard is almost identical with the Yamaha
HS-200, but like the Bontempi
HT 313.10 it features additional "music games" to teach note and
chord recognition, melody play etc. using an LCD display.
(I strongly retouched this photo, since my original box is
very bleached out.)
different main features:
5 built-in audiogames with each 3 levels
LCD display to indicate note letters and game scores
CPU "IG06070, E2210K-208" (64 pin SMD) + separate sound IC "Yamaha YM-1018B,
24 07 21" (24 pin DIL)
opening the case, be careful not to crack off these plastic tabs at the
The hardware differs from Yamaha HS-200
and employs a SMD CPU (gladly labelled "microcomputer" on the PCB) and
a separate sound chip. Unlike with Casio, the use of an LCD was
extremely unusual for early
Yamaha keyboards. Unfortunately Yamaha
missed the chance of building a polyphonic
VL-Tone competitor, thus despite the LCD it features neither a
synthesizer nor rhythm nor sequencer, but only the audiogames. At least
the games include also fairly hard exercises and not just trivial monophonic
stuff like found in certain cheap modern toy keyboards from China.
The audiogames include various polyphonic sound effects and jingles
played in the current main voice preset sound. At the end of each game
(usually after time runs out) the game score is displayed to indicate how
well the player played. The games are selected with the 'function' button,
the level with 'level'. To begin press 'start'. (I don't own the
manual of this instrument, thus some game details may be explained inaccurately
function 1: keyboard play
Normal keyboard play mode; the last played note letter is indicated
on the LCD. Strange is that also here the 'level' button cycles through
'1'..'3' despite these and the 'start' button seem to change nothing in
function 2: play displayed notes
The instrument displays note letters and the player has to play the
corresponding notes before the next note comes.
= play 1 note (monophonic)
= play 2 notes together
= play 3 notes together
function 3: play heard notes
The instrument slowly plays notes (one per second). The player has
to hit the corresponding key in time. Correct hits play a glissando sound.
= instrument repeats note until correct key is hit.
= instrument plays ascending and descending tone scales (only flats).
= instrument plays ascending and descending notes including sharps.
function 4: repeat the note sequence
The instrument slowly plays a monophonic note sequence. The player
has to repeat that sequence with correct note length. When played well,
the instrument plays a fanfare. Leading wrong notes are ignored.
= sequence is made from 3 adjacent note pitches (only flats).
= sequence is made from 4 adjacent note pitches (only flats).
= sequence is made from any notes within an octave.
function 5: repeat the chord
The instrument plays a 3 note chord. The player has to repeat that
chord on the keyboard. When he plays wrong 2 times , the correct note letters
are displayed. First the 3 notes play separately before the chord sounds.
After 30 points only the chord sounds.
= only flats
= with sharps
= like 2 (but more different chord types?)
This is a 2 player game in the tradition of Pong. But instead
of seeing a tennis ball, you only hear its position as a glissando. The
1st player serves the ball by pressing the lowest F key. Then a line of
ascending notes sounds to indicate the ball position. The 2nd player has
to press the corresponding key on the right keyboard halve to return the
ball (which makes the note line descend again). When he misses the ball,
he has to serve the next ball with the high E key. Wrong key presses take
no effect. They play notes only while the ball is not flying. Remember,
this is an audiogame, not a videogame, thus the LCD only displays the score
I was told by a collector that the similar looking Yamaha HS-400
had even a great chorus style human voice sample(?) despite it was already
made in 1982.
= slow, only flat keys
= faster, flat & sharp keys
= like 2, but only one try to hit a flying ball (i.e. any previous wrong
key press misses the ball).
of these screws voids warranty...