fix bug in PC jump target calculation,

fix bug in RegFile input width,
fix control logic bug with INC/DEC,
change assembler output format,
change programs to use d0 as space char value

firmware/assembler.py

@@ -99,7 +99,8 @@ def get_immediate(operand, labels):
 
 output = sys.argv[1]
 targets = sys.argv[2:]
-out = open(output, "wb")
+#out = open(output, "wb")
+out = open(output, "w")
 print('detected targets: ' + str(targets))
 for file in targets:
 	print('assembing: ' + file)
@@ -139,4 +140,5 @@ for file in targets:
 	for inst in tqdm(instructions, desc='Assembly', unit=' instructions'):
 		opcode = op_codes[inst[0]]
 		operand = inst[1]
-		out.write((opcode| operand).to_bytes(length=2, byteorder='big'))
+		out.write(format(opcode | operand, 'b') + '\n')
+		#out.write((opcode| operand).to_bytes(length=2, byteorder='big'))

firmware/example.sh

@@ -1,2 +1,2 @@
 #!/bin/sh
-python assembler.py cse141L.bin program1.asm program2.asm program3.asm
+python assembler.py machine_code.txt program1.asm program2.asm program3.asm

firmware/program1.asm

@@ -24,7 +24,7 @@ init: LDI #d62
 	PUT r8 // init r8 decrementer with number of preamble space chars
 	LDI #d64
 	PUT r9 // init r9 decrementer to total number of possible ciphertext chars
-preamble_loop: LDI #d32 // get space character decimal 32
+preamble_loop: LDI #d0 // get space character decimal 0
 	XOR r7 // bitwise XOR the current state with plaintext space to generate ciphertext
 	CLB r0 // clear the leading bit of the ciphertext as in requirements
 	STW r12 // store ciphertext to write pointer

firmware/program2.asm

@@ -59,7 +59,7 @@ tap_init: LDI #d64
 	NXT r9 // decrement total encryption chars remaining
 	tap_loop: LDI lfsr_routine
 		JAL r0 // jump to lfsr routine which calculates next state in r7
-		LDI #d32 // load space char expected plaintext
+		LDI #d0 // load space char expected plaintext
 		XOR r7
 		CLB r0 // clear leading bit in the expected ciphertext
 		PUT r1 // store expected cipher text in r1

firmware/program3.asm

@@ -59,7 +59,7 @@ tap_init: LDI #d64
 	NXT r9 // decrement total encryption chars remaining
 	tap_loop: LDI lfsr_routine
 		JAL r0 // jump to lfsr routine which calculates next state in r7
-		LDI #d32 // load space char expected plaintext
+		LDI #d0 // load space char expected plaintext
 		XOR r7
 		CLB r0 // clear leading bit in the expected ciphertext
 		PUT r1 // store expected cipher text in r1