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Olivetti ETV 300 : Can I use the typewriter part as a serial terminal to mimic a teletype?

@1ST1 Would you be able to provide me a .bin file of the ROM that is broken in my system, eventhough I could be in the wrong language ?
 
Bin file of the computer unit? I think the ROM of the computer is Ok. The computer looks like having problem with video RAM. I still was not able to access the ET 111 typewriter.
 
I was talking about the typewriter ROM.

While I wait for you to get your ET111, how far should I get in the boot process of the computer without the typewriter plugged into it? This will help me diagnose the issue.
 
It should finish the diagnostics where you see the large "D" in the upper left corner and then display a diskette symbol, and when the disk is inserted it should start to boot. Then it will display a typewriter symbol to wait for the typewriter to get online.
 
Ok. Based on the photos, am I right to think it does not finish the diag routine at this point ?
 
Yes, you see clearly a video card memory problem. The screen should be blank with the large "D" upper left. You still can see the "D", so it's not dead.
 
Hi everyone, sorry to revive this thread after a long time.
I just found an ETV300 here in Italy; it has a central processing unit with a single floppy drive and an ET111 typewriter.
Unfortunately, the monitor was disposed of, so I wanted to ask if anyone had the monitor's pinout and specifications?
Aesthetically, it looks very similar to the one for the L1 M20 personal computer, but I'm hoping it's something compatible with a composite video or CGA monitor.
Thanks in advance
 
Hello, I don't have the specs of the monitor, but it is not composite or CGA, but it is very similar with MDA. It has H-Sync, V-Sync, one video signal plus intensity.
 
Thank you for your kind reply!
I'd like to ask, as far as you know, is the monitor the same one as the Olivetti L1 M20 computer?
Do you have the video card schematic and/or video connector pinout?
Thanks in advance.
 
Hello, I don't know if they are identical, but it looks really that they use the same chassis. The crt tube should be different as the ones of ETV 300 have green phosphor while M20 CRT are white or blue. Maybe they differ also in video frequency and timings. I have the circuit diagram of the ETV 240 / 250 monitor which should work also on ETV 300 and 350, at least for ETV 350 it is sure that the system has also been shipped with this monitor. But I have to dig that out, currently I am not at home.
 
Thanks for the info! If you could find any schematics or pinouts, that would be great.
Alternatively, some photos of the inside of the monitor would also be helpful to understand what it and the card are like.
I was asking about the M20 monitor because it seems easier to find.
 
I am attaching to this message some photos from a friend that show the inside of the L1 M20 monitor, so as to understand if the ETV300 monitor is structurally similar.
 

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Hi @1ST1 do you have any news about the circuit diagrams and the monitor's features and its working frequencies?
Thanks in advance!
 
Thanks in advance! I'm trying to figure out the monitor's HSync and VSync frequencies, specifically.
I'm also looking for the boot disk images for my ET111 system with an Italian layout.
 
I have diskimage for italian system, but I don't know if it fits for ET 111 as well. I tried it with my ET 121 and my ET 225 and as they are german versions they printed only nonsense with it. My german disk is only working fully with my ET 121, the enhanced print attributes of the ET 225 are not fully supported.
 
Hi everyone, I finally found another ETV 300 system, but it doesn't have a typewriter.
I can now connect that ET111 to this one. I tested the power supply and replaced the damned RIFA capacitors. Now the system turns on, and the monitor displays the letter "D" (I assume this is a way to request a floppy disk?).

However, the ET111 seems to be having some issues; the error light stays on with a sequence of LEDs.

At this point, could anyone provide me with an image of the startup floppy disk (for any type of keyboard, but preferably Italian)?

Does anyone have documentation/diagrams for the ET111 or the ETV300 system in general?

@1ST1

Thanks in advance.
 
D on the screen is for diagnostics. When it comes to request for a bootable floppy it will display a floppy disc logo. And it searches for the typewriter just later after the CP/M is already booting.

You can tell me which LEDs are lighening together with the ERR LED and I can tell you what's the problem. It could be anything as the starting diagnosting code is in a ROM of the NEC CPU, so it could even mean that the CPU can not access the other EPROMs.
 
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