Search found 136 matches

by TMAOne
Wed Sep 26, 2018 1:37 pm
Forum: ZX BASIC
Topic: ZX81X2.ROM - and the big bang
Replies: 24
Views: 1149

Re: ZX81X2.ROM - and the big bang

Congratulations zsolt! The YouTube has been removed for copyright reasons, unfortunately. I'd appreciate another. When I get some time and a clear workbench :roll: I plan to take this baby out for a test drive. I'm thinking in terms of the Multi-ROM adapter discussed here: https://www.sinclairzxworl...
by TMAOne
Sat Sep 08, 2018 6:37 pm
Forum: Hardware
Topic: Improving Timex/Sinclair Tape Loading
Replies: 142
Views: 12744

Re: Improving Timex/Sinclair Tape Loading

That looks awesome Danjovic.

Lardo Boffin, do you have your prototype unit back yet? Have you had a chance to turn it loose on those tapes you can't get to load normally?

Ian
by TMAOne
Sat Sep 08, 2018 6:28 pm
Forum: Hardware
Topic: ZX81 External Keyboard
Replies: 16
Views: 739

Re: ZX81 External Keyboard

Lardo Boffin wrote:
Sat Sep 08, 2018 5:44 pm
Ooh. That looks nice!
Indeed!
by TMAOne
Wed Jul 25, 2018 1:20 pm
Forum: Hardware
Topic: Improving Timex/Sinclair Tape Loading
Replies: 142
Views: 12744

Re: Improving Timex/Sinclair Tape Loading

That's great work Mark, thank-you.

The table seems to show the unit very stable once the "lit" threshold is reached. It never occurred to me to quantify it like that; I just know the darn thing works.

Here's hoping for your problematic tapes Lardo,...

Ian
by TMAOne
Fri Jul 20, 2018 7:44 am
Forum: Hardware
Topic: Improving Timex/Sinclair Tape Loading
Replies: 142
Views: 12744

Re: Improving Timex/Sinclair Tape Loading

I just used the "slave tape" output on my 1980's prototype (pictured at the beginning of this thread) to copy an entire tape for a friend. The clone seems to load even more reliably than the original! Can't wait to see these kits distributed, once they pass muster.
Ian
by TMAOne
Fri Jul 20, 2018 7:34 am
Forum: SALES
Topic: ZX81 ULA
Replies: 65
Views: 6532

Re: ZX81 ULA

(I know people say these oscilloscopes were bad, but now I know why.) They're not all bad , just not suited for everything. I have a DSO201, a 1 MHz "older brother" of yours that looks like a cell phone. I love it. I keep it in a box of "away mission tools", (just the bare essentials), and it serve...
by TMAOne
Wed Jun 27, 2018 8:01 am
Forum: Hardware
Topic: ZX80/81 & TS1000/1500 modern upgrades
Replies: 11
Views: 794

Re: ZX80/81 & TS1000/1500 modern upgrades

My personal vote would go to the ZX-TEAM mod for 16 or 32K on the ZX81 motherboard. http://www.zx81.de/english/_frame_e.htm Everybody knows those wobbly, inept, high failure-rate 16K RAM packs are a royal pain. The "Hardware Projects" section on the ZX-TEAM site lists this mod first and foremost. It...
by TMAOne
Tue Jun 19, 2018 6:26 pm
Forum: Hardware
Topic: Improving Timex/Sinclair Tape Loading
Replies: 142
Views: 12744

Re: Improving Timex/Sinclair Tape Loading

It's been a while. Is there any movement on this?
by TMAOne
Thu May 17, 2018 9:13 pm
Forum: Development
Topic: ZX81 ULA-in-a-CPLD
Replies: 198
Views: 24327

Re: ZX81 ULA-in-a-CPLD

Congratulations Andy!

This is truly a milestone in Zeddy history, as I know many otherwise good examples have gone to the dumpster for lack of a replacement ULA.

Good going. I look forward to them being widely available.
by TMAOne
Tue Feb 13, 2018 11:54 pm
Forum: Hardware
Topic: Composite to HDMI Converter
Replies: 11
Views: 1639

Re: Composite to HDMI Converter

eBay is full of ones like this from China. AVtoHDMI (600 x 600).jpg Some folks avoid the Chinese stuff like the plague, but for the price it's hard to go wrong. I use one with my Texas Instruments TI-99/4A, which is rather demanding--the "composite" video is taken from a cable that was meant to feed...