Search found 638 matches

by mrtinb
Wed Mar 21, 2018 1:36 pm
Forum: Development
Topic: ROM hacking
Replies: 8
Views: 3976

Re: ROM hacking

In PowerBasic, Matthias Swatosch have made the commands **IN and **OUT.

(http://www.swatosch.de/zx81/index.html)
by mrtinb
Wed Mar 21, 2018 12:15 pm
Forum: Development
Topic: Bad Apple UDG
Replies: 23
Views: 765

Re: Bad Apple UDG

RWAP wrote:
Wed Mar 21, 2018 12:11 pm
We could do with a video of this on Youtube :)
You want a 8 hour video of the encoding? :lol:
by mrtinb
Wed Mar 21, 2018 11:12 am
Forum: Development
Topic: Bad Apple UDG
Replies: 23
Views: 765

Re: Bad Apple UDG

I don't like the demon video, but can you share the tools to create other videos our selves?
by mrtinb
Thu Mar 15, 2018 1:34 pm
Forum: Development
Topic: Tzxduino
Replies: 3
Views: 185

Re: Tzxduino

If I remember correctly it is one way only. PC to ZX81.
by mrtinb
Wed Mar 14, 2018 6:50 pm
Forum: Development
Topic: ZX81 ULA-in-a-CPLD
Replies: 147
Views: 12314

Re: ZX81 ULA-in-a-CPLD

Anyone implementing option to switch between normal black on white and inverse white on black?
by mrtinb
Thu Mar 08, 2018 4:47 pm
Forum: GAMES
Topic: Ball Blaster
Replies: 24
Views: 6234

Re: Ball Blaster

/me likes :)
by mrtinb
Wed Mar 07, 2018 4:14 pm
Forum: GAMES
Topic: Ball Blaster
Replies: 24
Views: 6234

Re: Ball Blaster

Does the game call routines for ZXpand joystick, sound or similar I/O-ports? I ask because it works great in an emulator, but crashes on my real hardware with ZXblast. I have found that it only works in emulators if they are set for 16k. More RAM will crash the program. I have configured my ZXblast ...
by mrtinb
Tue Mar 06, 2018 6:31 pm
Forum: Hardware
Topic: My first wire wrap: Wilf's AT keyboard interface
Replies: 49
Views: 2294

Re: My first wire wrap: Wilf's AT keyboard interface

It was difficult because the Commodore has a different matrix than the ZX81. If I shifted the keys the task would have been twice as difficult. Then none of the existing matrix could have been used. This “easy” path made it possible to create the keyboard before this weekend’s meet up on a tight sch...
by mrtinb
Tue Mar 06, 2018 11:19 am
Forum: Hardware
Topic: My first wire wrap: Wilf's AT keyboard interface
Replies: 49
Views: 2294

Re: My first wire wrap: Wilf's AT keyboard interface

Creating Wilf's AT keyboard is still on my to do list. But currently I just needed a keyboard fast.
by mrtinb
Tue Mar 06, 2018 10:54 am
Forum: Hardware
Topic: My first wire wrap: Wilf's AT keyboard interface
Replies: 49
Views: 2294

Re: My first wire wrap: Wilf's AT keyboard interface

Creating a keyboard is a hard task. To be ready for ZX-Team meeting this weekend, I need a keyboard. I've changed paths twice. First trying to rebuild an old Mac USB keyboard. This was a pain, as the matrix is plastic foil membrane. I tried with aluminum foil and electric paint. This was a steep hil...