Files

Dr. Christian Giessen 6849a701d4 Fix Type 1 AMF bitfield and add real FIR/IIR test ROMs

- Fix Type 1 multifunction: AMF=bits17-13, DD=bits19-18, PD=bits21-20
  (was off by one bit, causing wrong MAC decode on real firmware)
- Add FIR filter ROM (fir.bin): 52 instructions, assembled from AD example
- Add IIR biquad ROM (iir.bin): 28 instructions, assembled from AD example
- Add open21xx-compatible source files (build/fir.dsp, build/iir.dsp)
- Both ROMs disassemble correctly showing expected DSP patterns:
  MAC+dual-read kernels, DO UNTIL loops, ASHIFT scaling, RTS(DB)
- Full regression: isa_test.bin unchanged

2026-04-22 19:47:12 +00:00

asm_adsp219x.c

Fix Type 1 AMF bitfield and add real FIR/IIR test ROMs

2026-04-22 19:47:12 +00:00

asm_adsp219x.so

Fix Type 1 AMF bitfield and add real FIR/IIR test ROMs

2026-04-22 19:47:12 +00:00

Makefile

Fix r2 arch plugin for radare2 >= 5.8 RArchPlugin API

2026-04-12 14:45:23 +00:00

README.md

Update all docs and test generator to match verified assembler opcodes

2026-04-22 18:46:54 +00:00

README.md

ADSP-219x Radare2 Plugin

Native architecture plugin for disassembling ADSP-219x (including ADSP-2191) 24-bit instructions in radare2 and iaito.

Build & Install

make
make install

Requires: GCC, radare2 >= 5.8.0 (RArchPlugin API).

Usage

r2 -a adsp219x -b 24 firmware.bin

Validation

Compare against the assembler-verified test ROM:

r2 -a adsp219x -b 24 -q -c "pd 48" ../examples/isa_test.bin

The test ROM (isa_test.dsp) was assembled with open21xx and contains known opcodes for all major instruction types.

Coding Standards

This plugin follows the GNU Coding Standards for C source code. No hardcoded absolute paths in any scripts.