Sinclair ZX80 / ZX81 / Z88 Forums

Hello 1024MAK and the rest of you,

Here is the resulting video link!
https://youtu.be/ADPGdyKzrew

Please tell the forum about your opinion on the board.

Thank you very much in advance.

Cheers,
DesSony

Hello everybody,

The board works!
I want to post a resulting video file here. How do I do it? YouTube? Dropbox? Whatever?

Thank you very much in advance.

Regards,
DesSony

Hi DesSony, just tell me your whishes, I am making a Version where the ROM is above the Zeddy Case so it fits the Zeddy better with a zif socket. Paul, I got it! I understand that you meant "wishes". BINGO! 1) Give it around 25.4 mm or 1 inch longer between where an edge connector and EPROM/EEPROM s...

XavSnap, As I told you about the 74LS133 voltage feed reversal a few posts ago here. I completely agreed with Paul! :) I fixed this problem with two "stacked" 16 pins sockets and two short wires on my "bugged" board. I wondered whether can I add a few millimeters and centimeters to the board's heigh...

Paul and Mrtinb,

I am not a board designer. XavSnap is. I wanted the board bit a little taller around 2.5 centimeters or more.

Cheers,
DesSony

With the case installed, you would have to use an extension cable. If the computer is uncased, then full room for 27C64 or 28C64 to make some EPROM/EEPROM modifications. The board could use more than 2.5 centimeters of height raise to ensure a 7805, a 74LS244, an electrolyte capacitor, and a "loaded...

I anticipated a TSD PCB order by preparing components for it. I received the PCB order 2 days ago (9/30/'22). After assembling the board, I checked the voltage reading before putting ICs on the board. As I expected, the 5 ICs had top left holes 5-volts readings with the 6 Silkprinted notches on its ...

Try this one:

viewtopic.php?f=7&t=2405&hilit=video+buffer

Regards,
DesSony

Hello, neighbor!

I am from Indiana!

DesSony

I decided to order five Timex Store Demonstrator printed circuit boards. Please let me know whether you want this board, please PM me.
Thank you very much in advance.

Cheers,
DesSony