HT113FA データシートの表示（PDF） - Holtek Semiconductor

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HT113FA

Submarine War LCD Game

Holtek Semiconductor 

HT113FA

• Three chances are offered to the player in

each round. When the player’s submarine is

hit by the enemy three times, GAME OVER is

shown on the LCD and the game goes into the

DEMO mode. At this time, if the START/PAUSE

key is not pressed within 2 minutes, power is

automatically turned off. The record of being

hit is cleared to zero whenever the hitting

number is less than three and a new round

begins.

• The player’s submarine can only fire one shot

at a time. Only when the player’s torpedo hits

its target or the target disappears can another

torpedo or missile be fired. In addition, vari-

ous sounds accompany with the firing. A pic-

ture of an explosion and a sound are generated

whenever the enemy’s or the player’s submarine

gets hit. When the player’s missile or torpedo

hits the enemy’s, a "TU" sound is derived. In

addition, a jubilant music is played each time a

round is completed. When the player’s subma-

rine gets hit three times and the game is over, a

sad music is played. However, no sounds are

generated if the MUTE key is pressed. To re-in-

itiate the sounds, press the MUTE key again.

• Each time the player hits the enemy and

scores are added, the highest score recorded is

compared with the present score. The highest

score is replaced when the current score is

greater than the recorded score. Otherwise,

the recorded score is maintained. The highest

score and game level achieved are reserved as

long as the RESET key is not pressed or the

batteries are not removed.

• The moving range of the player’s submarine is

limited to the upper and lower waterways.

The player can use the up, down, left and

right shift keys to move the submarine.

• When the player’s submarine gets hit, a sub-

marine picture is shown at the upper right

side of the LCD to specify the submarine has

been hit once. Another picture of submarine is

added when the player’s submarine is being

hit again. However, the third hit of the player’s

submarine ends the game and displays GAME

OVER at the upper right side of the LCD.

• The enemy’s bombers can appear from either

the left or the right side. Each direction is

further divided into the upper and lower

routes. The Following is the code for the indi-

vidual routes:

♦ The first route is: A1 → B2 → C2 → E2 → D5

→ F2

♦ The second route is: A1 → B2 → C8 → E8 →

D5 → F2

♦ The third route is: F5 → D2 → E5 → C5 →

B5 → A3

♦ The fourth route is: F5 → D8 → E5 → C5 →

B5 → A3

Given this, the maximum number of bombers

appearing on the LCD is four. The warships

emerge at the right side and then move to the

left side. As for the enemy’s submarines, they

appear in the upper waterway or sometimes

in the lower waterway. The submarines then

move upward and downward. However, the

submarines will automatically disappear af-

ter moving to and fro without being attacked.

• The enemy’s bombs have two directions of

flight, namely vertically down and slanting

downward:

♦ The routes for vertical flights are:

The first route: B3 → B6 → B9 → B13

♦ The second route: C3 → C6 → C9 → C12 →

C16

♦ The third route: E3 → E6 → E9 → E12 →

E16

♦ The fourth route: D3 → D6 → D9 → D12 →

D16

♦ The fifth route: F3 → F6 → F9 → F12

♦ The routes of the slanting flights are:

The first route: A2 → B6 → C9 → E12 → E16

♦ The second route: C9 → E12 → E16

♦ The third route: B3 → C6 → E9 → D12 →

D16

♦ The fourth route: E9 → D12 → D16

♦ The fifth route: C3 → E6 → D9 → F9 → F12

♦ The sixth route: E3 → D6 → F9 → F12

♦ The seventh route: F6 → D9 → E12 → E16

♦ The eighth route: D9 → E12 → E16

♦ The ninth route: D3 → E6 → C9 → B9 → B13

♦ The tenth route: E6 → C9 → B9 → B13

3

25th Nov ’98

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