From 0aa2c30f62e6ec53f2e21b4039abeb1581d460d8 Mon Sep 17 00:00:00 2001
From: Johannes Theiner <j.theiner@live.de>
Date: Thu, 29 Nov 2018 14:49:47 +0100
Subject: [PATCH] a4: Bearbeitung im Praktikum

---
 src/asm/a4.asm | 46 +++++++++++++++++++++++++++++-----------------
 1 file changed, 29 insertions(+), 17 deletions(-)

diff --git a/src/asm/a4.asm b/src/asm/a4.asm
index 074ecdc..7474e00 100644
--- a/src/asm/a4.asm
+++ b/src/asm/a4.asm
@@ -85,14 +85,14 @@ start:
 again:
 
 ; Ihr Programmcode...
-	;Ausgabe der Zähler Variable
-	mov ax, [count]
+	;Ausgabe der Status Variable
+	mov ax, [status]
+	out leds, ax
 	
-	cmp ax, 0x0
-	jz ifzero
+	times shcnt shr ax, 1
 
-	mov al, [count]
-	out leds, al
+	;cmp ax, 0x0
+	;jbe ifzero
 
 	jmp again
 
@@ -100,10 +100,11 @@ again:
 ifzero: 
 	mov ah, 2
 	mov dl, 7
-	mov bx, offset frei
+	mov bx, frei
 	int 6
-	mov ax, [pieces]
-	mov [count], ax
+	mov byte [status], pieces << shcnt
+	
+	
 	ret
 
 
@@ -171,36 +172,47 @@ init:
 ;------------------------ Serviceroutinen -----------------------------------
 
 isr_opentimer: ; Timer fuer Vereinzeler (Zeit fuer Oeffnung)
-
+	push ax
 ; Ihr Programmcode
+	
 
 isr_opentimer_out: ; Ausgang aus dem Service
 	mov al, eoi		; EOI an PIC
 	out ocw_2_3, al
+	pop ax
 	iret
 	
 isr_lt: ; Lichttaster
-	mov ax, [count];Zählen
-	dec ax
-	mov [count], ax
-	iret
-	
-
 ; Ihr Programmcode
+	push ax
+
+	mov al, [status]
+	times shcnt shr al, 1
+	dec al
+
+	times shcnt shl al, 1
+	and byte [status], 00001111b
+	or [status], al
+	
+	
 
 isr_lt_out: ; Ausgang aus dem Service
 	mov [status], al
+	or byte [status], 00000001b
 	mov al, eoi		; EOI an PIC
 	out ocw_2_3, al
+	pop ax
 	iret
 	
 isr_servotimer: ; Timer fuer Servo (Vereinzeler)
-
+	push ax
 ; Ihr Programmcode
+	
 
 isr_servotimer_out: ; Ausgang aus dem Service
 	mov al, eoi		; EOI an PIC
 	out ocw_2_3, al
+	pop ax
 	iret