Each hexadecimal number must begin with a numeric digit (0 through 9) and must be followed by the letter H.

HERE: MVI C, 0BAH   ; LOAD REG C WITH HEX BA

Each decimal number may be identified by the letter D immediately after its last digit or may stand alone. Any number not specifically identified as hexadecimal, octal, or binary is assumed to be decimal.

ABC: MVI E, 15D   ; LOAD E WITH 15 IN DECIMAL

Each octal number must be followed by the letter O or the letter Q.

LABEL: MVI A, 72Q   ; LOAD OCTAL 72 INTO ACCUM

Each binary number must be followed by the letter B.

NOW: MVI D, 1111011OB   ; LOAD REGISTER D WITH 0F6H