PT2 is LED output T (on means unlocked) ; The specific operation of this system ; unlock if AD is not pressed and P is pressed ;I/O port definitions on the 9S12DP512 ...
Friendly program. Stack. Lecture 7. Nachiket M. Kharalkar. 3 ... Friendly software. Set bit 2 of port T. ldaa #000100. oraa PTT. staa PTT. Clear bit 5 of port AD ...
Conversions, definitions, hand execution, bus cycles, hand assembly. And half longer questions ... listing to execution cycles. machine code to execution cycles ...
Reads access the read-only receive data register (RDR) ... TDRE is the Transmit Data Register Empty flag. set by the SCI hardware if transmit data register empty ...
define a problem with a set of basic abstract principles. separate policies mechanisms ... pointer (or link) to other nodes (define next states) table structure ...
bra loop. golft ldx Left,x letter value. bra loop. fail clra not in tree. bra exit. found ldaa Data,x return value. exit rts. int Look(unsigned char letter) ...
Why do we care about these bits? Bit. Name. Meaning after add or sub. N ... When you perform (32 129) in an 8-bit system what is the status of the NZVC bits? ...
LCD Liquid Crystal Display. Operation (cont.) Interface to HD44780. Employ 4-bit data mode ... Develop device driver to serve as interface between 6812 and HD 44780 ...
pull removes data from the top of the stack. stack implements last in first out (LIFO) behavior ... puly pull from stack into Y. ins S=S 1 (discard top of stack) ...