Search found 516 matches

by gammaray
Fri Nov 16, 2018 3:45 am
Forum: Spectrum BASIC
Topic: Zx Breakout Type in Error
Replies: 6
Views: 137

Re: Zx Breakout Type in Error

Haven't received book yet from Amazon. :)
by gammaray
Thu Nov 15, 2018 6:37 pm
Forum: Hardware
Topic: Vertical Bars on Power Up / Solution
Replies: 2
Views: 60

Re: Vertical Bars on Power Up / Solution

Which is why it started working on 9V/1500mA. It is a version 3 selected to match a ULA/Oscillators for NTSC standards.(not installed yet) Thanks to the maker, that the memory does not seem to be affected. Is there a Spectrum program to test RAM? RAMTest48.tzx.zip at WOS? http://www.worldofspectrum....
by gammaray
Thu Nov 15, 2018 12:03 am
Forum: Hardware
Topic: Vertical Bars on Power Up / Solution
Replies: 2
Views: 60

Vertical Bars on Power Up / Solution

I had problems with the refurbished Speccy I got... but I found out the solution! Using a 12V 1000 mA transformer power supply providing 18V no load, I got vertical bars and the unit started saving routine and had vertical bars. But... Using a 9V 1500 mA switching power supply, the bars went away an...
by gammaray
Wed Nov 14, 2018 7:40 pm
Forum: Sinclair Misc
Topic: Should i move to Europe to acquire a ZX81?
Replies: 5
Views: 104

Re: Should i move to Europe to acquire a ZX81?

I was lucky enough to get a UK version from Sheelagh for just shipping (thanks from my TS1000 heart!) :D

And also got a US version with a TS2068 purchase (needs video work...the TS2068 not the ZX81)

:D
by gammaray
Wed Nov 14, 2018 7:31 pm
Forum: Hardware
Topic: TS1000 ULA vs ZX81 ULA
Replies: 24
Views: 1066

Re: TS1000 ULA vs ZX81 ULA

The switch will only affect software that reads it's position. Sinclair's BASIC ROM reads the 50/60 position, to create the right picture. But some software made in machine language might not read the position and hardcode/assume 50 or 60. Thinking this might be the case for me with swaotch basic h...
by gammaray
Wed Nov 14, 2018 1:37 am
Forum: Hardware
Topic: Why was Sinclair selling UK model ZX81s in the USA?
Replies: 9
Views: 475

Re: Why was Sinclair selling UK model ZX81s in the USA?

An inside case picture would show if this is a rework or retask or from original dual-purpose mold. They may have welded a plug or not. ADDENDUM: Question is how many US vs UK ZX81 have evidence of mold inserts. The fact that this US model does may mean he intended to be able to do international mod...
by gammaray
Wed Nov 14, 2018 1:16 am
Forum: Hardware
Topic: Why was Sinclair selling UK model ZX81s in the USA?
Replies: 9
Views: 475

Re: Why was Sinclair selling UK model ZX81s in the USA?

Sometime they make molds with an insert to use for different models. Put the insert in "A" for UK and "B" for US. The same factory can injection mold the cases and only 1 mold needed. Molds are expensive. Then there is evidence of the shape of the insert. My TS1500s have this square in the spot for ...
by gammaray
Tue Nov 13, 2018 3:40 am
Forum: SALES
Topic: ZX81CCP
Replies: 104
Views: 19963

Re: ZX81CCP

ZXVid is available too on SMR but does not have inverted video (white letters on black background) if I remember correctly.

c
by gammaray
Sat Nov 10, 2018 11:05 pm
Forum: Welcome Area
Topic: New member from Oregon, USA
Replies: 23
Views: 651

Re: New member from Oregon, USA

:D :lol: :) :lol:
by gammaray
Thu Nov 08, 2018 3:05 am
Forum: Spectrum BASIC
Topic: Zx Breakout Type in Error
Replies: 6
Views: 137

Re: Zx Breakout Type in Error

Hi. Was there a code listing, picture or link to the document this program was shown?

C