Downloads
All files are provided for educational and preservation purposes. Original manufacturer documentation remains the copyright of Mitsubishi Electric. If you have additional documentation, schematics, or source code to contribute, please get in touch.
Monitor Program
| File | Type | Size | Date | Action |
|---|---|---|---|---|
|
Monitor ROM Disassembly (annotated) Fully annotated, bit-correct disassembly of the 2Kb monitor ROM. Includes all routines, vectors, and UART handling. |
TXT | ~85 KB | 2024 | ⬇ Download |
Schematics
| File | Type | Size | Date | Action |
|---|---|---|---|---|
|
Memory Interface Schematic (JPG) Memory interface schematic showing Z3 (M50734SP), Z4 (74HC373 latch), Z5 (74HC139 decoder), Z7 (8K RAM), Z8 (16K EPROM) interconnections. |
JPG | ~1.2 MB | 2024 | ⬇ Download |
Sample Code
| File | Type | Size | Date | Action |
|---|---|---|---|---|
|
UART Initialisation & Test Sample program demonstrating UART setup, 9600/19200 baud configuration, transmit, receive, and error handling. |
ASM | ~3 KB | 2024 | ⬇ Download |
|
PWM Output Example Demonstrates configuration and use of the M50734 pulse-width modulation peripheral. |
ASM | ~2 KB | 2024 | ⬇ Download |
|
Timer Configuration Example Example code for configuring Timer A and Timer B for interval timing and baud rate generation. |
ASM | ~2 KB | 2024 | ⬇ Download |
|
Serial Output Routines Ready-to-use subroutines for sending characters, strings, and hex values over the UART. |
ASM | ~3 KB | 2024 | ⬇ Download |
|
DME (Display Memory Examine) Routine Memory examination and display routine, useful as a debugging utility. |
ASM | ~2 KB | 2024 | ⬇ Download |
M740 Toolchain (Renesas)
| File | Type | Size | Date | Action |
|---|---|---|---|---|
|
SRA74 Assembler v4.10.00 Renesas cross-assembler for the M740 family. Assembles M740 source files into relocatable object code. |
EXE | 142 KB | 05/09/2005 | ⬇ Download |
|
LINK74 Linker v4.00.00 Linker for the M740 family. Combines relocatable object modules produced by SRA74 into an absolute output file. |
EXE | 60 KB | 05/09/2005 | ⬇ Download |
|
CRF74 Cross Reference v1.00.10 Generates a cross-reference listing showing where each symbol is defined and referenced across source files. |
EXE | 36 KB | 05/09/2005 | ⬇ Download |
|
CV74 HEX/SYM File Converter v1.00.00 Converts absolute output files into HEX and SYM formats suitable for downloading to the Designers Board. |
EXE | 43 KB | 05/09/2005 | ⬇ Download |
|
HEXTOS2 Motorola S2-Record Generator v2.00.00 Converts HEX files to Motorola S2-record format for use with monitors and programmers that accept S-records. |
EXE | 28 KB | 04/10/1999 | ⬇ Download |
|
LIB74 Library Manager v4.00.00 Creates and maintains libraries of relocatable object modules for use with the LINK74 linker. |
EXE | 71 KB | 05/09/2005 | ⬇ Download |
|
LOOP74 Branch Optimiser v1.00.00 Optimises branch instructions in M740 assembly source, substituting shorter branch forms where possible to reduce code size. |
EXE | 46 KB | 05/09/2005 | ⬇ Download |
Assembler Documentation
| File | Type | Size | Date | Action |
|---|---|---|---|---|
|
SRA74 Assembler User Manual (PDF) Mitsubishi SRA74 cross-assembler documentation including structured language (LOOP74), directives, and command-line options. |
~2.5 MB | Original | ⬇ Download | |
|
Mitsubishi 740 Family Sample Programs (PDF) Official Mitsubishi REJ05B0584 collection of 740-family sample programs covering all major peripheral and instruction types. |
~1.8 MB | 2005 | ⬇ Download |
User Manual (Planned)
| File | Type | Size | Date | Action |
|---|---|---|---|---|
|
M50734SP User Manual — Scanned PDF Scanned copy of the original Mitsubishi M50734SP User Manual. Will be added when scanning is complete. |
TBD | Pending | Pending | |
|
RCS Designers Board Manual — Scanned PDF Scanned copy of the RCS Microsystems Designers Board documentation. Will be added when scanning is complete. |
TBD | Pending | Pending |