added some more shortcut mnemonics

mu808asm.py

@@ -17,8 +17,8 @@ import sys, re, struct
 mnemos = ['nop', 'jmp', 'iat', 'out', 'inp', 'set', 'cpy', 'fma',
          'sub', 'div', 'mdf', 'abs', 'sqr', 'nel', 'tri', 'rnd']
 
-# mu808 jump shortcuts
-jmp_shorts = {
+# mu808 jump/function shortcuts
+jmpfunc_shorts = {
     'jeq': 'jmp 0',    # direct jump if equals to zero
     'jgt': 'jmp 1',    # direct jump if greater than zero
     'jlt': 'jmp 2',    # direct jump if less than zero
@@ -32,7 +32,15 @@ jmp_shorts = {
     'ige': 'jmp 10',   # indirect jump if greater than or equals to zero
     'ile': 'jmp 11',   # indirect jump if less than or equals to zero
     'ine': 'jmp 12',   # indirect jump if not equals to zero
-    'iuc': 'jmp 13 0'  # indirect unconditional jump
+    'iuc': 'jmp 13 0', # indirect unconditional jump
+    'dia': 'cpy 0',    # direct integer assignment
+    'dva': 'cpy 1',    # direct value assignment
+    'iva': 'cpy 2',    # indirect value assignment
+    'exp': 'nel 0',    # natural exponent
+    'log': 'nel 1',    # natural logarithm
+    'sin': 'tri 0',    # sine
+    'cos': 'tri 1',    # cosine
+    'atn': 'tri 2'     # arctangent
 }
 
 # converts the MU8A source code to the plaintext machine code representation
@@ -41,7 +49,7 @@ def assemble(source):
     out = ''
     lno = 0
     vreg = re.compile(r'\s+')
-    for shrt, meaning in jmp_shorts.items(): # replace the jump shortcuts
+    for shrt, meaning in jmpfunc_shorts.items(): # replace the shortcuts
         source = source.replace(shrt, meaning)
     for line in source.split('\n'): # parse the main code
         fields = []
@@ -107,6 +115,8 @@ def disassemble(machcode):
         if asline is not None:
             out += ' '.join(asline) + '\n'
         lno += 1
+    for shrt, meaning in jmpfunc_shorts.items(): # replace the shortcuts
+        out = out.replace(meaning, shrt)
     return out
 
 # converts the plaintext machine code representation to binary representation