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non-volatile storage emulation

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Aiden
2026-05-25 23:16:41 +10:00
parent 0c241877eb
commit 0819701b22
12 changed files with 647 additions and 36 deletions
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40
tests/test_emulator_fast_paths.py
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@@ -2,6 +2,7 @@ import unittest
from h8536.emulator.fast_paths import (
LOC_BFE0_TRANSFER_WRAPPER,
LOC_BFFE_TRANSFER_WRAPPER,
LOC_C08B_P9_WRITE_BYTE,
LOC_C0DB_P9_READ_BYTE,
P9FastPath,
@@ -26,7 +27,7 @@ class P9FastPathTest(unittest.TestCase):
self.assertFalse(fast_path.try_handle(emulator))
self.assertEqual(emulator.cpu.pc, LOC_C08B_P9_WRITE_BYTE)
def test_c08b_write_byte_logs_r0_sets_success_and_returns_to_caller(self):
def test_c08b_write_byte_logs_r0_sets_timeout_without_active_eeprom_transaction(self):
emulator = H8536Emulator(bytes(rom_with_reset()))
emulator.cpu.pc = LOC_C08B_P9_WRITE_BYTE
emulator.cpu.regs[0] = 0x12A5
@@ -41,10 +42,11 @@ class P9FastPathTest(unittest.TestCase):
self.assertEqual(fast_path.output_bytes, [0xA5])
self.assertEqual(fast_path.events[-1].kind, "write_byte")
self.assertEqual(fast_path.events[-1].value, 0xA5)
self.assertEqual(emulator.cpu.regs[0], 1)
self.assertFalse(fast_path.events[-1].success)
self.assertEqual(emulator.cpu.regs[0], 0)
self.assertEqual(emulator.cpu.pc, 0x3456)
self.assertEqual(emulator.cpu.regs[7], 0xFE80)
self.assertFalse(emulator.cpu.z)
self.assertTrue(emulator.cpu.z)
self.assertFalse(emulator.cpu.n)
self.assertFalse(emulator.cpu.v)
self.assertTrue(emulator.cpu.c)
@@ -106,9 +108,11 @@ class P9FastPathTest(unittest.TestCase):
self.assertEqual(event.queue_depth, 1)
self.assertEqual(fast_path.trace_lines(), ["read_byte pc=C0DB value=00 source=script:idle-panel queued=1"])
def test_wrapper_defaults_to_timeout_when_no_p9_device_response_is_queued(self):
def test_wrapper_writes_and_verifies_against_x24164_model(self):
emulator = H8536Emulator(bytes(rom_with_reset()))
emulator.cpu.pc = LOC_BFE0_TRANSFER_WRAPPER
emulator.cpu.regs[4] = 0x0812
emulator.cpu.regs[5] = 0x3456
emulator.cpu.regs[7] = 0xFE84
emulator.memory.write16(0xFE84, 0x789A)
@@ -116,30 +120,40 @@ class P9FastPathTest(unittest.TestCase):
self.assertTrue(fast_path.try_handle(emulator))
event = fast_path.events[-1]
self.assertEqual(event.kind, "wrapper_timeout")
self.assertFalse(event.success)
self.assertEqual(event.source, "default_timeout")
self.assertEqual(emulator.cpu.regs[0], 0)
self.assertTrue(emulator.cpu.z)
self.assertEqual(event.kind, "wrapper_success")
self.assertTrue(event.success)
self.assertEqual(event.source, "x24164_write_verify")
self.assertEqual(emulator.cpu.regs[0], 1)
self.assertFalse(emulator.cpu.z)
self.assertEqual(emulator.cpu.pc, 0x789A)
self.assertEqual(emulator.memory.p9_bus.fast_read_word(0x0812), (True, 0x3456))
def test_wrapper_can_succeed_from_queued_p9_device_response(self):
def test_read_wrapper_puts_x24164_word_in_r5(self):
emulator = H8536Emulator(bytes(rom_with_reset()))
emulator.cpu.pc = LOC_BFE0_TRANSFER_WRAPPER
emulator.cpu.regs[4] = 0x0010
emulator.cpu.regs[5] = 0xCAFE
emulator.cpu.regs[7] = 0xFE86
emulator.memory.write16(0xFE86, 0x89AB)
emulator.memory.p9_bus.queue_wrapper_results([True], source="panel-script")
fast_path = P9FastPath(P9FastPathConfig(enabled=True))
self.assertTrue(fast_path.try_handle(emulator))
emulator.cpu.pc = LOC_BFFE_TRANSFER_WRAPPER
emulator.cpu.regs[4] = 0x0010
emulator.cpu.regs[5] = 0
emulator.cpu.regs[7] = 0xFE86
emulator.memory.write16(0xFE86, 0x9ABC)
self.assertTrue(fast_path.try_handle(emulator))
event = fast_path.events[-1]
self.assertEqual(event.kind, "wrapper_success")
self.assertTrue(event.success)
self.assertEqual(event.source, "panel-script")
self.assertEqual(event.source, "x24164_read_word")
self.assertEqual(emulator.cpu.regs[5], 0xCAFE)
self.assertEqual(emulator.cpu.regs[0], 1)
self.assertFalse(emulator.cpu.z)
self.assertEqual(emulator.cpu.pc, 0x89AB)
self.assertEqual(emulator.cpu.pc, 0x9ABC)
if __name__ == "__main__":