Download HTBLuVA Wien V

HTBLuVA Wien V
Abteilung:
Ausbildungsschwerpunkt:
Informatik
Intelligente Systeme, Tools und Methodik
str1:
STRING "loooping"
str2:
STRING "done loooping"
IO
There are a number of commands which can be used to control hardware connected to the
emulator.
HIGH / LOW turn a pin on or off
TOGGLE inv ert a output pin
PIN read binary v alue from pin
ADC read analogue value of the ADC-Pins (legacy commands: ADC0, ADC1, ADC2)
Toggling LEDs
main:
TOGGLE 3
; switch LED on output-pin 3
DELAY 30000 ; wait for ~450ms
JMP main
Reading pushbutton
main:
PIN 1 ; read value
; PIN will set the
; pin is on => z
; pin is off => z
JNZ on
JMP main
from pushbutton
zero -flag to 1 if the pins state is zero, so:
= 0 => JNZ jumps
= 1 => JZ jumps
on:
TOGGLE 3
JMP main
; toggle an LED each time a button is pressed
Stack
There is a 16-byte-stack which can be accessed by the fairly standard PUSH and POP-instructions.
MOV b0, 0x20
MOV b1, 0x40
MOV b2, 0x60
; w0 = 0x2040
; w1 = 0x6000
; initial sp = 0x50
; b1 = 0x40
PUSH b1
; Stack = 0x40
; sp
= 0x51
; b0 = 0x20
PUSH b0
; Stack = 0x40 0x20
; sp
= 0x52
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