Keyboard TELEVIDEO 9065 - Page 1
Forum section: electronics / general

author: Oliv_Bricol-2
author_rank: Contributor
timestamp: February 10, 2025, 08:08:25 am
content: Hello everyone,I have just received a TELEVIDEO 9065, without keyboard.The connection being of the RJ11 type, do you know the pinout, which I am trying to transplant with a troubleshooting keyboard.

author: Oliv_Bricol-2
author_rank: Contributor
timestamp: February 26, 2025, 08:15:29 am
content: Hello, how to identify the clock pin and the keyboard signal pin?

author: Phaseseeker
author_rank: Regular Contributor
timestamp: February 26, 2025, 09:21:07 am
content: It's not a 100% clear from the picture, but it looks like pin 2 on the keyboard connector goes to pin 18 on the 74HC244 line driver, which is an output, so I'd guess that is your clock. Not sure how these keyboards work though.

author: Oliv_Bricol-2
author_rank: Contributor
timestamp: February 26, 2025, 09:47:41 am
content: Thank you Phasesseker.oh yes, I didn't think of that! Clock in 18, the other connection of the connector goes to another pin of the 244, but impossible to take a photo below. I also don't know the type of keyboard, perhaps XT type, because it's old, so I'm going to try the connection that way.

author: m k
author_rank: Super Contributor
timestamp: March 01, 2025, 06:02:48 pm
content: Manual says that one keyboard can be used in different modes.It's probably propriety and special.PC keyboard goes so that when you press keylock or numlock the keyboard sends a code for a key,but the computer sends a code for the LED.It's possible that the terminal does something similar.So checking what happens in the connector during power on can reveal something.My guess is that without its own keyboard you must do a PC/Televideo keyboard translator.

author: Oliv_Bricol-2
author_rank: Contributor
timestamp: March 03, 2025, 09:09:04 am
content: Hello M kthe test is NOT conclusive, the keyboard is well supplied with 5V, pressing the keys does nothing, the LEDs light up briefly, and the message remains keyboard faulty, the cursor ends up appearing on the screen, but it remains impossible to type a command. I'll try to check with an oscilloscope.

author: Oliv_Bricol-2
author_rank: Contributor
timestamp: March 06, 2025, 07:54:35 am
content: Hello, the motherboard being based on 6502, I will find out about a compatible keyboard, maybe AppleMaybe the device is no longer functional because of a faulty keyboard circuit?

author: Phaseseeker
author_rank: Regular Contributor
timestamp: March 07, 2025, 12:31:58 pm
content: As m k said, it's probably a custom keyboard interface that's not compatible with much else. According to this eBay listing:https://www.ebay.com/itm/226569122013the same keyboard is used for model 935, 965, 9050 and yours. Service manual for the 965 is available (https://bitsavers.org/pdf/televideo/965/133007-00_TVI_965_Maintenance_Manual_198808.pdf) and if you look at page 63 there's a schematic for the keyboard.It looks like the two data lines are RxD/TxD (so it's using an UART), and the keyboard is based on an 8049 microcontroller.Again, if the eBay listing is right and the 965 keyboard is compatible, someone reverse engineered the protocol and made a PS2 adapter:http://worldofvax.blogspot.com/2019/01/televideo-systems-part-ii-keyboards.html

author: Stray Electron
author_rank: Super Contributor
timestamp: March 07, 2025, 02:35:18 pm
content: Quote from: Oliv_Bricol-2 on February 10, 2025, 08:08:25 amCan you post a picture of the 9065? I think that I used to have one of those and IIRC it looked almost exactly like one of their old computer terminals and the keyboards looked the same. IIRC I picked up the computer at a hamfest in Jacksonville, Florida for next to nothing but I never did anything with it so I'm not too sure of the details for it, and only that it looked nearly identical to one of their older terminals. I have no idea what I ever did with the one that I had.

author: Oliv_Bricol-2
author_rank: Contributor
timestamp: March 11, 2025, 07:35:03 am
content: Hello, not sure I understood the request, here is a photo of the facade.

author: Oliv_Bricol-2
author_rank: Contributor
timestamp: March 11, 2025, 02:44:09 pm
content: finding a TVI955 keyboard would be idealNew :https://www.boundlessterminals.com/televideo.html

author: Oliv_Bricol-2
author_rank: Contributor
timestamp: April 23, 2025, 07:41:12 am
content: Hello everyone,Unfortunately, I found an old keypad in the barn that I thought was compatible. It seems to be a DTMF keypad. I found it strange that there were only three wires, so no clock.:'(