I need help modifying the assembly language program listed below to display a di
ID: 1813150 • Letter: I
Question
I need help modifying the assembly language program listed below to display a digital clock on the LCD of the Fox11 Trainer board. The dip switches on the trainer board when activated need to adjust the time by one hour to simulate different time zones. Here is the link to the programming refference guide: http://www.freescale.com/files/microcontrollers/doc/ref_manual/M68HC11ERG.pdf
Here is the program that needs to be modified.
TEN_MS: equ 2500
STACK: equ $8FFF
org $FF70
lcd_ini: rmb 3 ; initializes 16x2 LCD module
lcd_line1: rmb 3 ; displays 16 char on the first line
lcd_line2: rmb 3 ; displays 16 char on the second line
org $D000
jmp start
delay_10ms:
pshx
ldx #TEN_MS ; 2500 x 8 = 20,000 cycles = 10ms
del1: dex ; 3 cycles
nop ; 2 cycle
bne del1 ; 3 cycles
pulx
rts
start: lds #STACK
jsr delay_10ms ; delay 20ms during power up
jsr delay_10ms
jsr lcd_ini ; initialize LCD
back: ldx #MSG1 ; MSG1 for line1, x points to MSG1
jsr lcd_line1
ldx #MSG2 ; MSG2 for line2, x points to MSG2
jsr lcd_line2
swi ; go back to BUFFALO monitor
MSG1: FCC " FOX11 TRAINER "
MSG2: FCC "(C)2002, EVBPLUS"
end
Explanation / Answer
To which port are the DIP switches connected to, on your board??
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