Recent content by mentat-vvo

I've recently received the chipped JZA70 ECU. The mines board is based on 74xx series of ICs: The board is being reversed: Also, I've found some rare ECU from ST205 Celica with EEPROMed version of MCUs: The 4-bit Fujitsu (detonation DSP) MCU was decapped. I'm waiting for an access to a...

I've made experimental ECU with stock AFM, equipped with my external memory module + upgrade of the MCU (7433->5B25CT-1, which has +100 bytes of RAM). Changes that were made: 1) Stock barometer MAP became external; can be easily replaced by an MPXH6400 (20kPa - 400 kPa) 2) A communication port...

7M-GTE code (gray connectors) for IDA with some comments https://yadi.sk/d/JLxfDOfH3LeLvZ I'm currently working on the replacement of a Karmann vortex type AFM with a "hot-wire" one from JZX100. Also, I'm planning to replace altimeter MAP with a MPXH6400. It is strange that internal altimeter...

There's a "magic" constant exist in the code. Works similar to the "req fuel" constant in mega$quirt. JZX90, 1JZ-GTE, MAP-based, also has this constant and could be tuned up to 850cc injectors. Maybe even more.

JZX100 ECU test. 3 boards running 68pin denso MCUs from external RAM. 540cc injectors from Toyota Caldina. No MAF. Engine tends to stall. https://www.youtube.com/watch?v=CQ-52Rz9w2c&feature=youtu.be

It's ALIVE!!1 https://youtu.be/pWKSp3R1jR8

Just asymmetric reply from crazy Russians ::flame:: Tests for 42-pin version now.

And how PORTAL latch works?

I'm currently working on a daughterboard for a "lesser brother" of sDIP64/PLCC68 D8X, namely D8X-42 (DIP42/PLCC44). I decided to use ATMega128A instead of CPLD and some SRAM to use ROM emulators/upload firmware from ATMega. I got a simple question on the IRP signal functionality. In ancient...

Great job! Looks like it's an enhanced 4-bit serie of Fujitsu MCUs. It has ADC, timers, USART. The following pinout seems to be similar with sDIP42 D151803-4151 (knock-DSP from 1G-FE ECU). Xin,Xout, power lines match. ADC power lines are different. Need more investigations.

No, those are sDIP 42.

Hi, All. I have developed readerboards for ND/TEN MCUs in DIP42, sDIP64, PLCC44 and PLCC68 sockets.