Motorola M68CPU32BUG Manuale Utente Scaricare il pdf (Pagina 19)

* prepare to write to the LCD display

MOVE.W #$0004,PEDR * bit 3 2 1 0

* 0 1 0 0

E R/W RS

MOVE.W #$000F,PFDR * send the DISPLAY ON command to the LCD

* RSRW D7D6D5D4D3D2D1D0

* Display control 0 0 0 0 0 0 1 D C B

* D = 1 = display ON

* D = 0 = display OFF

* --------------------

* C = 1 = cursor ON

* C = 0 = cursor OFF

* --------------------

* B = 1 = cursor BLINKING

* B = 0 = cursor NOT BLINKING

Once the LCD module has been initialized with the DISPLAY ON command, ASCII data

may be written it using the following sequence of instructions:

* WRITE ASCII DATA TO PORT F and STROBE using E=0

* and DELAY in between strobes

* WRITE "T" ASCII 54H

MOVE.W #$0005,PEDR * bit 3 2 1 0

* 0 1 0 1

* E R/W RS note RS = 1 for

* writing data into LCD

MOVE.W #$0054,PFDR * send "T" to the LCD

BSR DELAY

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Motorola M68CPU32BUG Manuale Utente Pagina 19