Search found 80 matches

by Bukster
Sun Apr 26, 2020 8:14 am
Forum: Software
Topic: Giant Letters utility
Replies: 2
Views: 4827

Giant Letters utility

Here's a handy utility to display giant letters on the screen. Input a string and see it turn into giant scrolling letters. This could be good for a display for a computer expo etc. It will support colour if you have a Chroma interface but works fine with a 16k ram pack only. Giant letters1.jpg Gian...
by Bukster
Sun Apr 05, 2020 3:02 am
Forum: GAMES
Topic: TRACTOR BEAM UDG
Replies: 5
Views: 6910

Re: TRACTOR BEAM UDG

No joy with the Eightyone emulator, it just crashes or uses normal graphics.

Wouldn't it be better if the I register was normal for the title screen then switched to whatever the new value should be for the game? The score and bonus messages wouldn't work however.
by Bukster
Sat Apr 04, 2020 10:10 pm
Forum: GAMES
Topic: Tractor Beam - Galaga style game
Replies: 10
Views: 10563

Re: Tractor Beam - Galaga style game

That is really cool!!! Can you tell something about the Making-Process?? Greetings Jens Made using Flat Assembler. It's entirely in machine code and even leaves about 1kb spare so memory efficient. As you can probably guess, the aliens are following preset movement tables. Every alien has a home po...
by Bukster
Sat Apr 04, 2020 10:02 pm
Forum: GAMES
Topic: Tractor Beam - Galaga style game
Replies: 10
Views: 10563

Re: Tractor Beam - Galaga style game

Moggy wrote: Sat Apr 04, 2020 12:20 pm Very nice. :geek:

I will make an attempt at a UDG version if you have no objections Bukster?
No objection. I take it UDG requires a modified ram pack and as I don't have one UDG wouldn't work on my hardware. As the aliens are all single letters, it might translate quite well into UDG
by Bukster
Sat Apr 04, 2020 6:28 am
Forum: GAMES
Topic: Tractor Beam - Galaga style game
Replies: 10
Views: 10563

Tractor Beam - Galaga style game

Here's my latest game - Tractor Beam. Inspired by the 1981 game Galaga, this game features most of the features found in the arcade game. The aliens can capture one of your fighters using their tractor beam. Shoot the alien that got your fighter when it's attacking, get it back and join two fighters...
by Bukster
Sat Dec 14, 2019 4:39 am
Forum: GAMES
Topic: Masada Class reissued with 100% machine code
Replies: 3
Views: 2417

Masada Class reissued with 100% machine code

I decompiled my old 1994 game Masada Class and have replaced all the basic routines with machine code. So things like the "one letter appears at a time" style of message writing that I may have thought looked cool back then is now running a lot faster in machine code. I've also updated the special e...
by Bukster
Sat Dec 14, 2019 4:30 am
Forum: Welcome Area
Topic: Hello from Germany
Replies: 5
Views: 5519

Re: Hello from Germany

I'm sure you'll find a lot of interest here. Welcome aboard
by Bukster
Sat Dec 14, 2019 4:29 am
Forum: Welcome Area
Topic: Hello from Italy!
Replies: 3
Views: 2416

Re: Hello from Italy!

Welcome to the forum. The more the merrier
by Bukster
Sat Nov 16, 2019 2:22 am
Forum: GAMES
Topic: Calvary Class - sequel to Masada Class game
Replies: 8
Views: 3395

Re: Calvary Class - sequel to Masada Class game

If the ZX81 cannot access memory over 32k, does that mean with 8k taken by the ROM, you've only got 24k to use? Minus screen ram (lo res 792 bytes) and it's closer to 23 kb usable ram. Is that correct? If I'm using hi res the screen is around 6K, so that would be 18kb usable ram It's still a lot mor...
by Bukster
Fri Nov 15, 2019 10:26 pm
Forum: GAMES
Topic: Calvary Class - sequel to Masada Class game
Replies: 8
Views: 3395

Re: Calvary Class - sequel to Masada Class game

Both Chroma and ZXpand provides at least 32k RAM, so it wouldn’t be bad to use that amount of memory for your great games. True, but I'm trying to write games that will run on original hardware. It's a personal rule, however if I put that to one side, there would be enough memory for powerups, more...