- debug_server.c: increase read_ram from 256 bytes to 16KB max,
use dynamic allocation for hex buffer; increase send_fmt buffer
from 16KB to 64KB to hold large responses
- find_divergence.py: use 4KB chunks (was 256), add total diff byte
count, remove run-length cap, remove hardcoded VSync exclusion,
add data length verification on reads
512KB paused scan: 128s (was 1393s with 256-byte chunks)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The recompiler set $ra to ROM addresses (0xBFC18xxx) for jal/jalr in
shell-region functions. On real hardware, $ra uses RAM addresses
(0x80030xxx) because the shell runs from RAM. This caused handler/
callback tables to contain ROM addresses instead of RAM, breaking
pointer comparisons that gate the BIOS shell's 3D rendering pipeline.
Also adds:
- tools/find_divergence.py: golden-oracle RAM comparison tool that
diffs recomp (port 4370) vs DuckStation (port 4371) byte-by-byte
using persistent TCP connections
- gte_exec counter in oracle VSync output for interpreter validation
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Matthew Stanley