aiden/h8-536-decoder
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timing adjustments

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Aiden
2026-05-25 22:17:36 +10:00
parent 6d4d9f0027
commit 4b50d0e98f
11 changed files with 313 additions and 40 deletions
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13
h8536/emulator/rx_probe.py
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@@ -202,8 +202,9 @@ def run_rx_probe(
per_byte_steps: int = 5_000,
post_frame_steps: int = 80_000,
interval_steps: int = 512,
frt1_ocia_steps: int = 512,
frt2_ocia_steps: int = 512,
frt1_ocia_steps: int | None = None,
frt2_ocia_steps: int | None = None,
clock_hz: int = 10_000_000,
p9_fast_path: bool = True,
p9_fast_input: int = 0xFF,
stop_after_tx_frame: bool = True,
@@ -214,6 +215,7 @@ def run_rx_probe(
interval_steps=interval_steps,
frt1_ocia_steps=frt1_ocia_steps,
frt2_ocia_steps=frt2_ocia_steps,
clock_hz=clock_hz,
p9_fast_path_enabled=p9_fast_path,
p9_fast_default_input_byte=p9_fast_input,
)
@@ -224,6 +226,7 @@ def run_rx_probe(
f"boot={boot_reason} steps={boot_steps_used} pc={h16(emulator.cpu.pc)} "
f"SCR={emulator.sci1.scr:02X} SSR={emulator.sci1.ssr:02X} "
f"rx_serviceable={int(_rx_ready(emulator))} "
f"clock_hz={emulator.clock_hz} "
f"lcd_display={emulator.memory.lcd.display_text(lines=4)!r}"
)
@@ -250,8 +253,9 @@ def build_arg_parser() -> argparse.ArgumentParser:
parser.add_argument("--post-frame-steps", type=int, default=80_000, help="maximum steps after a full injected frame")
parser.add_argument("--keep-listening", action="store_true", help="use all post-frame steps instead of stopping at the first new TX frame")
parser.add_argument("--interval-steps", type=int, default=512, help="rough step period for the scaffolded interval timer interrupt")
parser.add_argument("--frt1-ocia-steps", type=int, default=512, help="rough step period for the scaffolded FRT1 OCIA interrupt")
parser.add_argument("--frt2-ocia-steps", type=int, default=512, help="rough step period for the scaffolded FRT2 OCIA interrupt")
parser.add_argument("--clock-hz", type=parse_int, default=10_000_000, help="CPU/phi clock in Hz for calibrated FRT timing")
parser.add_argument("--frt1-ocia-steps", type=int, default=None, help="legacy step-period override for FRT1 OCIA")
parser.add_argument("--frt2-ocia-steps", type=int, default=None, help="legacy step-period override for FRT2 OCIA")
parser.add_argument("--no-p9-fast-path", action="store_true", help="disable shortcut handling for known P9 routines")
parser.add_argument("--p9-fast-input", type=parse_int, default=0xFF, help="default byte returned by the P9 fast-path read routine")
return parser
@@ -274,6 +278,7 @@ def main(argv: list[str] | None = None) -> int:
interval_steps=args.interval_steps,
frt1_ocia_steps=args.frt1_ocia_steps,
frt2_ocia_steps=args.frt2_ocia_steps,
clock_hz=args.clock_hz,
p9_fast_path=not args.no_p9_fast_path,
p9_fast_input=args.p9_fast_input,
stop_after_tx_frame=not args.keep_listening,