md-firmware

Firmware dumps for MiniDisc recorders!

About

In this repository, you can find the firmware for various portable MiniDisc players. It is part of an ongoing effort to reverse engineer said devices.

Sony Recorders

SoC	Description	Flash size	SRAM size	DRAM size	CPU Core
CXD2671	Type-R	0x60000 (384k)	0x4000 (16k)		ARM7TDMI
CXD2674	Type-R
CXD2677	Type-R NetMD	0x70000 (448k)	0x4800 (18k)	2MiB	ARM7TDMI
CXD2678	Type-S NetMD	0xA0000 (640k)	0x9000 (36k)	8MiB	ARM7TDMI
CXD2680	Type-S NetMD	0xA0000 (640k)	0x9000 (36k)	2MiB	ARM7TDMI
CXD2681	NetMD, HiMD	1MiB	64k	16MiB	ARM7TDMI+
CXD2683	NetMD, HiMD, Camera	-	-	-
CXD2687	NetMD, HiMD, Latest?	1MiB	32k	16MiB	ARM7TDMI+

Sony Players

SoC	Description	Flash size	Ram size	DRAM size	CPU Core
CXD2679	Type-S	0x40000 (256k)	0x3000 (12k)		ARM7TDMI

Available dumps

Generally, firmwares are shared for devices of the same generation and SoC. Minor patches may have been applied to the firmware (using soft patches), so dumps can vary slightly between devices.

CXD2671	Dumped devices
v1.3	MZ-R700, MZ-R501

CXD2677	Dumped devices
v1.0	MZ-N1
v1.1	MZ-S1
v1.2	MZ-N1
v1.3	MZ-N505, MZ-N707
v1.4	MZ-N505, MZ-N1

CXD2679	Dumped devices
v1.0	MZ-E520

CXD2678 - CXD2680	Dumped devices
v1.1	MZ-N10
v1.2	MZ-N510
v1.3	MZ-N10, MZ-NE410
v1.4	MZ-N910
v1.5	MZ-N510
v1.6	MZ-N10, MZ-NE410, MZ-N510, MZ-NF520D, MZ-NF610, MZ-N710, MZ-N910, AIWA AM-NX9
v1.0	MZ-N920 (v1.0 for the N920 seems to be newer than v1.6)
Note	CXD2678 and CXD2680 devices share the same firmware

CXD2681	Dumped devices
NH generation
v1.000	MZ-NH600
v1.100	MZ-NH1, MZ-NH700, MZ-NH900
v1.10A	MZ-NH600
v1.200	MZ-NH1
v1.20A	MZ-NH3D
RH generation
v1.000	MZ-RH10, MZ-RH910

CXD2687	Dumped devices
v1.040	MZ-RH1
v1.060	MZ-RH1
v1.070	MZ-RH1
v1.080	MZ-RH1
v1.090	MZ-RH1
v1.0A0	MZ-RH1