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== (**COPIED FROM ENGLISH PAGE**) ==The built in LCD driver for the PIN mode is written to support a worst case scenario where you use random pins of the microprocessor to drive the LCD pins.

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This makes it easy to design your PCB but it needs more code.

When you want to have less code you need fixed pins for the LCD display.

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With the statement $LIB "LCD4.LBX" you specify that the LCD4.LIB will be used.

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The following connections are used in the asm code:

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Rs = PortB.0

RW = PortB.1 we dont use the R/W option of the LCD in this version so connect to ground

E = PortB.2

E2 = PortB.3 optional for lcd with 2 chips

Db4 = PortB.4 the data bits must be in a nibble to save code

Db5 = PortB.5

Db6 = PortB.6

Db7 = PortB.7

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You can change the lines from the lcd4.lib file to use another port.

Just change the address used&nbsp;:

.EQU LCDDDR=$17&nbsp;; change to another address for DDRD ($11)

.EQU LCDPORT=$18&nbsp;; change to another address for PORTD ($12)

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See the demo lcdcustom4bit.bas in the SAMPLES dir.

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Note that you still must select the display that you use with the&nbsp;[[CONFIG LCD|CONFIG LCD]]&nbsp;statement.

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See also the&nbsp;[[LCD4E2|lcd42.lib]]&nbsp;for driving displays with 2 E lines.

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Note that LBX is a compiled LIB file. In order to change the routines you need the commercial edition with the source code(lib files). After a change you should compile the library with the library manager.

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[[Category:LCD/de]]