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test @(Rn)+ and @-(Rn)

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Neil Webber 2024-03-29 08:52:31 -05:00
parent 7b1eda6638
commit 7617579031
1 changed files with 34 additions and 0 deletions
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34
pdptests.py
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@ -430,6 +430,40 @@ class TestMethods(unittest.TestCase):
p.run(pc=instloc)
self.assertEqual(p.r[0], 65534)
def test_mode3(self):
# @(Rn)+ mode
instloc = 0o4000
ptrloc = 0o020000
dataloc = 0o030000
bval = 0o42
a = InstructionBlock()
a.mov(ptrloc, 'r0')
a.mov(dataloc, a.ptr(ptrloc))
a.movb(bval, '@(r0)+')
a.halt()
p = self.make_pdp()
self.loadphysmem(p, a, instloc)
p.run(pc=instloc)
self.assertEqual(p.physmem[dataloc >> 1], bval)
self.assertEqual(p.r[0], ptrloc+2)
def test_mode5(self):
# @-(Rn) mode
instloc = 0o4000
ptrloc = 0o020000
dataloc = 0o030000
bval = 0o42
a = InstructionBlock()
a.mov(ptrloc+2, 'r0') # +2 because pre-decrement
a.mov(dataloc, a.ptr(ptrloc))
a.movb(bval, '@-(r0)')
a.halt()
p = self.make_pdp()
self.loadphysmem(p, a, instloc)
p.run(pc=instloc)
self.assertEqual(p.physmem[dataloc >> 1], bval)
self.assertEqual(p.r[0], ptrloc)
def test_unscc(self):
# more stuff like test_cc but specifically testing unsigned Bxx codes
p = self.make_pdp()