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BASIC OUT Statement
Curtis F Kaylor edited this page May 20, 2024
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TYPE: USB BASIC system statement
FORMAT: OUT port , byte
Action: Sends byte to the I/O port port.
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port is an integer expression specifying the I/O port the byte is to be sent to.
- If port is in the range 0 through 255, it directly corresponds to the I/O port number.
- If port is in the ranges -32768 through -1 or 256 through 32767.
- The the low byte specifies the I/O port to be written to.
- The high byte is placed on lines 7 through 15 of the address bus.
- byte is an integer between 0 and 255 specifying the value to be sent to the port.
Examples of OUT:
OUT 246, 12
Send a value of 12 to the SOUND chip
10 X=14:OUT 254, X
Send a value of 14 to the Cassette sound port
plusBASIC v0.22w enhancements
FORMAT: OUT port , bytes { ; port , bytes ...}
Action: Sends one or more bytes to one or more Z80 I/O ports.
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port is an integer in the range -65536 through 65535.
- The low byte of port specifies the I/O port to be written to
- The high byte of port is place on lines 7 through 15 of the address bus.
- bytes is is a list of one or more byte values and/or strings, separated by commas.
Examples of OUT:
P$="ABCD":OUT 252,P$
Send bytes with values 64, 65, 66, and 67 to cassette port
10 OUT 254,0,$"010203",4
Sends bytes with values 0, 1, 2, 3, and 4, to the printer port.
OUT $EA,17;$EB,$"0468"
Sets the second color of palette 1 to RGB values 6, 4, and 8, respectively.