E2000 error 2...56. Need Help

[Badbaud]

I would have to see the binary file that is on P1 to see if it is valid.
Can you provide a hex file

[Paulus]

that is, just change the file extension from .txt to .hex or. rom

[Paulus]

it won't let me attach with another extension

[Paulus]

and sorry for the delay, I didn't see that the conversation went to the second page

beginner

[Paulus]

today I tested IC 5101 RAM, both passed the test, but still error 0._._._.0.6

If anyone is interested, test 5101 with Arduino Mega

[Paulus]

I built a logic analyzer with raspberry pico and a level shifter

now I can see much better the bus activity at high frequency

I listened to J and J2, A0 - A8 and D0 - D8 and there is activity

I don't know what to do
I think I'll check with the analyzer all the ICs, maybe I'll find something stuck high or low

I will start with 2650 to see what signals it receives and generates

[Paulus]

CPU 2650 tested

I measured the activity on the 2650 and found the following pins with fixed level
but I don't know if it's normal or not

Sense INTREQ Pause Run/Wait High
ADREN Flag DBUSEN OPACK INTACK Low

[Paulus]

after consulting the diagram and eliminating the pins connected to the ground or not connected, I reduced the list:

Sense (tied together) INTREQ  High
INTACK Low

[Paulus]

New 5101 arrived
Tested ok
I ordered too much
Some are for sale
if anyone from Europe is interested

[Paulus]

Great progress!

I ordered 4 pieces of eeprom 2817 from our Chinese brothers
which I was lucky that they worked
and I wrote with an arduino mega and a proto board a rom version (M1 M2 M3 P1 E2224-30-42)
that I found on www, and It came to life!

I can enter the tests, I also have some sounds, but it is clear that it is not her software

[Paulus]

Does anyone have a Supermelon 1228 e-series ROM ?

please help

[Badbaud]

measured on the reset pin of the mcu

what triggers the continuous reset?

please help

I put a sticky on this forum on how to eliminate a defective low voltage detector circuit.
Remove R40 and solder a jumper from pin 13 to pin 5 on the CA8031.
That clicking relay is a clue that the low voltage circuit is going bat shit crazy.

[Paulus]

yes, thanks,
I already did that, now I need the right binaries files for it