Search found 31 matches

by zx81ultra
Mon Jul 19, 2021 5:54 pm
Forum: ZX BASIC
Topic: T2P.EXE
Replies: 9
Views: 3576

Re: T2P.EXE

Excellent, thank you !
by zx81ultra
Sat Jul 17, 2021 6:57 pm
Forum: ZX BASIC
Topic: T2P.EXE
Replies: 9
Views: 3576

Re: T2P.EXE

Hello,

I tried the following code with T2P:

10 LET A$="COS 1"
20 LET B=VAL A$
30 PRINT B

I get a 2/20 error code when run. If I type the program with the ZX81 keyboard it runs OK. Is there a way to tell T2P that the COS text has to be treated as a function ?

best regards
by zx81ultra
Fri May 07, 2021 11:24 pm
Forum: Development
Topic: UDG - Just UDG...
Replies: 21
Views: 7328

Re: UDG - Just UDG...

You always have the Pseudo High Res Graphics alternative which doesn't require hardware mods, it's a software only solution.
by zx81ultra
Mon Apr 05, 2021 5:51 pm
Forum: ZX BASIC
Topic: T2P.EXE
Replies: 9
Views: 3576

Re: T2P.EXE

Do you think it can be recompiled for OSX ?
by zx81ultra
Thu Apr 01, 2021 7:33 pm
Forum: ZX BASIC
Topic: T2P.EXE
Replies: 9
Views: 3576

Re: T2P.EXE

Hello,

Really great, I saw the video, Thank You.

Just curious, in which language is T2P written ?
by zx81ultra
Tue Mar 23, 2021 2:24 pm
Forum: Development
Topic: Developing new ZX81 Video Driver
Replies: 26
Views: 31045

Re: Developing new ZX81 Video Driver

Good news ! I contacted the original poster, thewiz, and he kindly sent me the missing files to be uploaded here again. It's worth mentioning that he was not able to post anything because his IP address was blacklisted, the same thing is happening to me since last year so maybe there are other users...
by zx81ultra
Sat Jan 02, 2021 11:19 pm
Forum: Hardware
Topic: How to connect a PAL ZX81 to a NTSC TV ?
Replies: 7
Views: 2576

Re: How to connect a PAL ZX81 to a NTSC TV ?

Thank you very much to all for your valuable help !

After a careful self-evaluation of my electronic skills, I've decided to leave the patient fate on more qualified hands so I'm going to look for help with the soldering.

Hopefully I'll be reporting the good news in a few days.

Kind regards.
by zx81ultra
Fri Jan 01, 2021 7:29 pm
Forum: Hardware
Topic: How to connect a PAL ZX81 to a NTSC TV ?
Replies: 7
Views: 2576

Re: How to connect a PAL ZX81 to a NTSC TV ?

Thank you Andy and Moggy for your suggestions. If I got it ok, the pal/ntsc converter would need a composite input signal and the zx81 would not be providing that ? or is it worth a try ? Adding just a 10 ohm resistor in the R30 position seems a very elegant solution, sadly I am an absolute zero at ...
by zx81ultra
Fri Jan 01, 2021 2:21 am
Forum: Hardware
Topic: How to connect a PAL ZX81 to a NTSC TV ?
Replies: 7
Views: 2576

How to connect a PAL ZX81 to a NTSC TV ?

Hello, My daughter bought me a ZX81 with PAL TV signal (UK), I think it's going to be impossible to find a PAL TV where I live (Bolivia). I managed to connect it to an old TV on UHF channel 36 and verified the ZX81 and the keyboard are working fine, the problem is the image. Any ideas on how to use ...