The ARM7TDMI memory read (cpu_read/cpu_halt/cpu_resume) works; document
when and how:
- tutorial: rewrite the "CPU targets" section from "structure only" to a
working cpu_read walkthrough (dump LPC2103 flash to Intel HEX), state
the operating envelope (power-on -> one halt -> dump; reads clobber
r0..r14/PC, no context save/restore, so resume isn't clean and a
re-halt in the same session can time out -> power-cycle), plus a
troubleshooting row for the sys-speed timeout.
- CLAUDE.md: roadmap phase 7 + ARM-debug note now say the read works
(flash dump validated), with context save/restore + arm_flash write as
the remaining steps.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>