Search found 234 matches

by dessony
Thu Oct 31, 2019 10:02 pm
Forum: Hardware
Topic: Video problems when running games and... I am new
Replies: 43
Views: 1537

Re: Video problems when running games and... I am new

Bola_dor, Thank you for an implied clarification! Everybody, http://www.sinclairzxworld.com/viewtopic.php?f=7&t=2405&p=25270&hilit=video+buffer#p25270 Horizontal track "line with its two (2) arrowheads attached" is a copper strip on the veroboard/stripboard. Also, notice that I put several numbers b...
by dessony
Wed Oct 30, 2019 3:50 pm
Forum: Hardware
Topic: Video problems when running games and... I am new
Replies: 43
Views: 1537

Re: Video problems when running games and... I am new

Bola_dor, I am also very glad that you used 1024MAK's buffer circuit with the Veroboard/stripboard . However, out of my curiosity, what kind of transistor are you using? BC548? NTE123AP? Or whatever? The way you set the transistor on the board triggered my curiosity, not criticism. But, I am happy t...
by dessony
Sat Oct 26, 2019 7:39 am
Forum: Welcome Area
Topic: Hello From Connecticut
Replies: 5
Views: 379

Re: Hello From Connecticut

Hi Tom_F,

I bought a TS1000 computer after I recognized that a college computer lab had its time limiting accessing to their own computer systems (DEC VAX). However, we welcome you to this forum!

Cheers,
DesSony
by dessony
Wed Oct 23, 2019 12:00 pm
Forum: ZX Spectrum Lounge
Topic: TS 2068 replica finally done!
Replies: 4
Views: 399

Re: TS 2068 replica finally done!

YanKleber,

I am also impressed by your own effort to make this kind of trophy! :-D :lol: It was almost impossible to identify a fake toy from a real toy!

DesSony
by dessony
Sun Oct 20, 2019 12:13 am
Forum: Hardware
Topic: Video problems when running games and... I am new
Replies: 43
Views: 1537

Re: Video problems when running games and... I am new

Hey bola_dor and everybody, I quoted that 1024MAK(Mark) has his "a simple transistor buffer" design. I put his own circuit design on a stripboard or a Veroboard to make our work more simpler and easier. I created a little cute Veroboard/stripboard project drawing based on 1024MAK's excellent ZX81 Vi...
by dessony
Wed Oct 16, 2019 5:53 pm
Forum: Welcome Area
Topic: Hello from Nottingham, UK.
Replies: 21
Views: 1190

Re: Hello from Nottingham, UK.

Graham,

Welcome to the Sinclair ZX81/ZX80 Forum!

From an American Timex/Sinclair 1000 user to a British Sinclair ZX81 user!

Cheers,
DesSony7
by dessony
Wed Jul 03, 2019 7:13 am
Forum: Hardware
Topic: ZX EPROM Programmer Port
Replies: 6
Views: 656

Re: ZX EPROM Programmer Port

Does this device use an 8255 IC?

DesSony
by dessony
Tue Jun 04, 2019 9:33 pm
Forum: Hardware
Topic: TS2068's schematic
Replies: 5
Views: 1094

Re: TS2068's schematic

To Paul, You are most welcomed!

To jdfan1000(David), No, I got a free file from my local public library. Go ahead, putting that file to the archive.org!

Cheers, :D

DesSony
by dessony
Tue Jun 04, 2019 5:01 am
Forum: Hardware
Topic: TS2068's schematic
Replies: 5
Views: 1094

TS2068's schematic

Hello everybody,

I decided to upload a Sinclair ZX Spectrum's American cousin's (TS2068) schematic here.
CC-19_Timex _Sinclair 2068.pdf
Computerfact 19
(3.43 MiB) Downloaded 110 times
Enjoy this one! :-D :lol:

Cheers,

DesSony
by dessony
Wed Apr 17, 2019 2:41 am
Forum: Hardware
Topic: Zx81 from death to life??
Replies: 17
Views: 1578

Re: Zx81 from death to life??

RS232, You gave your ZX81 a complicated and hard life. :o WOW! Keep it simple, s______ by gutting a RF modulator's innard. And put a very cute little circuit board inside the metal box. See a topic here: 1024MAK/DesSony Video Transistor Buffer Amplifier Board, https://www.sinclairzxworld.com/viewtop...