Initial data commit

Task/Conditional-structures/6502-Assembly/conditional-structures-1.6502

@@ -0,0 +1,2 @@
+		LDA #10
+		CMP #11

Task/Conditional-structures/6502-Assembly/conditional-structures-2.6502

@@ -0,0 +1,20 @@
+		BNE 		;Branch on Not Equal - branch when the zero flag is set
+		BEQ 		;Branch on EQual - branch when the zero flag is set.
+				;The zero flag is set when the result of an operation is zero
+
+		BMI 		;Branch on MInus
+		BPL 		;Branch on PLus - branch when the sign flag is cleared/set.
+				;The sign flag is set when the result of an instruction is a negative number
+				;and cleared when the result is a positive number
+
+		BVS 		;Branch on oVerflow Set
+		BVC 		;Branch on oVerflow Cleared - branch when the overflow flag is cleared/set.
+				;The overflow flag is set when the result of an addition/subtraction would
+				;result in a number larger than 127 or smaller than -128
+
+		BCS		;Branch on Carry Set
+		BCC		;Branch on Carry Clear - branch when the carry flag is cleared/set.
+				;The carry flag is set when an addition produced a carry and when
+				;a subtraction produced a borrow and cleared if an addition/subtraction
+				;does not produce a carry/borrow.  The carry flag also holds bits
+				;after shifts and rotates.

Task/Conditional-structures/6502-Assembly/conditional-structures-3.6502

@@ -0,0 +1,6 @@
+		LDA #200
+		CMP Variable
+		BEQ #3			;if equal, skip ahead 3 bytes...
+		CLC			;if unequal, continue executing instructions
+		ADC #1
+		STA OtherVariable	;				...to here.

Task/Conditional-structures/6502-Assembly/conditional-structures-4.6502

@@ -0,0 +1,4 @@
+		LDX #100
+Loop:		...do something
+		DEX
+		BNE Loop

Task/Conditional-structures/6502-Assembly/conditional-structures-5.6502

@@ -0,0 +1,21 @@
+ReturnTable:
+dw foo-1            ;each is a label to a section of code that ends in an RTS
+dw bar-1
+dw baz-1
+
+ReturnSpoof:        ;assume execution arrived here via a JSR command.
+lda indexVariable   ;contains the desired index into ReturnTable. 0 = foo, 1 = bar, 2 = baz.
+asl                 ;the data is word length so the index must be multiplied by 2.
+tax
+
+lda ReturnTable+1,x ;get the high byte of the return address.
+pha
+lda ReturnTable,x   ;get the low byte
+pha
+
+; Now, the desired subroutine's address minus 1 is on top of the stack.
+; The RTS command will take this address and jump there. That routine's RTS command will act as the RTS from "ReturnSpoof",
+; bringing execution to the point just after ReturnSpoof was called.
+; If done properly, return spoofing will not corrupt the stack.
+
+RTS                 ;this "RTS" acts as a JMP to the address we just put on the stack.