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Declare 1 constant. This can be done just below the prototype section. Put the following divider above the constant section.
;************************ Constants ***************************
Declare a constant LF to hold the ASCII value for a linefeed: 0Ah
A linefeed moves the cursor to the next line.
You can embed a LF in your declaration of the string variables below.
Example: name byte "Fred Kennedy",LF,0
If the above string were printed with WriteString as follows, Fred Kennedy would print then the cursor would move to the beginning of the next line.
movedx, offset name
callWriteString
You could also embed a LF at the beginning of a string which would move the cursor to the next line then the string would print:
name byte LF,"Fred Kennedy",0
See WriteStringLFconstants.asm on the class web site for examples of declaring strings with embedded LF and how to declare constants.
ROL : Rotate Left without Carry: This instruction rotates the content of the destination operand to the left by the specified count bit-wise excluding the carry. The most signific
I can get it to copy the string but can''t get it to reverse it.
Hold Response Sequence The HOLD pin is examined at leading edge of each clock pulse. If it is received active line by the processor before T4 of the earlier cycle/during the T1
Software Interrupts Software interrupts are the result of an INT instruction in an executed program. It may be assumed as a programmer triggered event that immediately stops e
what is sahf nstrucions
Ask question #MinimuWHAT ARE CONSTANTS AND WHAT DO THEY DO?m 100 words accepted#
chp 3 of assemly
1. Start your program at address $8500. To do this you need to inform the assembler, through the EQU and ORG assembler directives, that you want your program to start at $8500. Thi
Motorola 68000 Series : 68000microprocessor is a 16 bit processor that has addressing space of 65536 locations, each of which holds a 64-bits word; In order to address those lo
LDS/LES Instruction execution : LAHF : Load AH from Lower Byte of Flag: - This instruction loads the AH register with the lower byte of the flag register. This instruction ca
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