feat: add ram manipulation exercises

2 files changed, 66 insertions, 0 deletions

diff --git a/I_anno/Architettura_Elaboratori/odd_even_numbers.asm b/I_anno/Architettura_Elaboratori/odd_even_numbers.asm
new file mode 100644
index 0000000..996fd62
--- /dev/null
+++ b/I_anno/Architettura_Elaboratori/odd_even_numbers.asm
@@ -0,0 +1,36 @@
+arr_n		dcd		8
+array		dcd		1, 2, 4, 6, -5, 8, 7, 3
+s_arr		dcd		0
+			
+			mov		r0, #arr_n
+			ldr		r0, [r0]
+			mov		r1, r0
+			
+			mov		r4, #1		; 0 = even, 1 = odd
+			mov		r6, #0		; number of elements on new sequence
+			
+			mov		r2, #s_arr
+			
+			mov		r1, #array
+			
+loop
+			cmp		r0, #0
+			beq		end_program
+			ldr		r3, [r1], #4
+			mov		r5, r3
+			
+			and		r5, r3, #1
+			cmp		r5, r4		; check if element stored in r3 is odd or even
+			beq		data_store
+subn_loop
+			sub		r0, r0, #1
+			b		loop
+			
+data_store
+			str		r3, [r2], #4
+			add		r6, r6, #1
+			b		subn_loop
+			
+end_program
+			str		r6, [r2]
+			end
diff --git a/I_anno/Architettura_Elaboratori/subsequence_less_than_5.asm b/I_anno/Architettura_Elaboratori/subsequence_less_than_5.asm
new file mode 100644
index 0000000..3c266d5
--- /dev/null
+++ b/I_anno/Architettura_Elaboratori/subsequence_less_than_5.asm
@@ -0,0 +1,30 @@
+arr_n		dcd		6
+array		dcd		3, 6, 7, 2, 9, 0
+s_arr		dcd		1
+			
+			mov		r0, #arr_n
+			ldr		r0, [r0]
+			mov		r1, r0
+			
+			mov		r2, #s_arr
+			mov		r1, #array
+			mov		r4, #0		; number of elements on new sequence
+			
+loop
+			cmp		r0, #0
+			beq		end_program
+			ldr		r3, [r1], #4
+			cmp		r3, #5		; number to compare
+			blt		data_store
+subn_loop
+			sub		r0, r0, #1
+			b		loop
+			
+data_store
+			str		r3, [r2], #4
+			add		r4, r4, #1
+			b		subn_loop
+			
+end_program
+			str		r4, [r2]
+			end