Search found 290 matches

by dessony
Sun Jan 03, 2021 4:07 am
Forum: Hardware
Topic: Just for fun
Replies: 0
Views: 297

Just for fun

Hello everybody, I just wanted to see how the ZX81/TS1000's motherboard reacts to a broken ROM chip. I simulated the broken ROM chip by taking the chip off the motherboard. Very interesting result! After the ROM was off the motherboard, no black square and no white "K" cursor, and the screen was thr...
by dessony
Fri Dec 18, 2020 3:20 am
Forum: Software
Topic: [Zx81:Type-Ins] "Your Computer" campaign...
Replies: 106
Views: 7102

Re: [Type-Ins] Links...

I just typed in the program's instruction. ZX-81 ASSEMBLER (Your Computer).docx :D Cheers, DesSony "Your computer" 11/84 "Zx81 Assembler - [SUPER'Sembler] " https://archive.org/details/your-computer-magazine-1984-11/page/n139/mode/2up 1 REM [HEX:\ 11,AB,6C,ED,53,04,40,21,\ 94,40,01,0A,0F,ED,B0,C3,\ ...
by dessony
Mon Dec 07, 2020 11:26 pm
Forum: Development
Topic: New prototype ZX-deluxe+
Replies: 19
Views: 1449

Re: New prototype ZX-deluxe+

Zxhenk,

Ditto 1024MAK! How much do I need to pay you in American Dollars? :?:

DesSony
by dessony
Thu Nov 26, 2020 9:16 am
Forum: Software
Topic: [Zx81:Type-Ins] "Your Computer" campaign...
Replies: 106
Views: 7102

Re: [Type-Ins] "Your Computer" campaign...

XavSnap,

You can find information on the bug reports article under "Your Letters" of the "Your Computer". That is how I solved a "Plane Annoying" game bug issue!
:D

DesSony
by dessony
Mon Nov 23, 2020 5:04 pm
Forum: SALES
Topic: Composite boards for sale.
Replies: 3
Views: 391

Re: Composite boards for sale.

How does this board respond to a LED TV (telly) while in TS1000/ZX81 loading/saving operating mode?

DesSony
by dessony
Mon Nov 16, 2020 11:49 am
Forum: Software
Topic: [Zx81:Type-Ins] "Your Computer" campaign...
Replies: 106
Views: 7102

Re: [Type-Ins] Links...

XavSnap,

I recognized that the "Your Computer" 11/84 "ZX81 Assembler - [SUPER'Sembler]" is almost similar to the Berch Assembler! Now I really appreciated that you decided to upload that zipped folder here! :D

DesSony
by dessony
Thu Nov 12, 2020 10:19 pm
Forum: Hardware
Topic: Fixing inherited Sinclair ZX81
Replies: 34
Views: 3071

Re: Fixing inherited Sinclair ZX81

That is great! :D It shows a back porch wave when viewing on an oscilloscope!

DesSony
by dessony
Thu Nov 12, 2020 9:11 pm
Forum: Hardware
Topic: Fixing inherited Sinclair ZX81
Replies: 34
Views: 3071

Re: Fixing inherited Sinclair ZX81

Mikeyp,

Please try to get a zoom-in picture of the ULA area. We would like to know the ULA's version on your ZX81 motherboard.

Thanks,
DesSony
by dessony
Mon Nov 09, 2020 12:30 pm
Forum: Software
Topic: Help with a "Buggy" Game program
Replies: 12
Views: 671

Re: Help with a "Buggy" Game program

The correction page for the Plane Annoying is for the BASIC section only. I really don't know about any bugs nor quirks within the machine language section. :?: Now we have a better chance with a disassembler within the VB81 to see why the program could not read the inverted chars.

DesSony
by dessony
Mon Nov 09, 2020 9:51 am
Forum: Software
Topic: Help with a "Buggy" Game program
Replies: 12
Views: 671

Re: Help with a "Buggy" Game program

I was right about the (Your Computer, Jan. 1984) type-in program being "buggy"! I confirmed that its original routine lines 500 to 600 did not belong there! So, I am uploading a correction here. YourComputer_1984_02_0044.jpg As for the Plane Annoying program's content translating into French, I real...