Search found 427 matches

by GCHarder
Mon Mar 18, 2024 9:38 pm
Forum: GAMES
Topic: Tempest CHR$128 version
Replies: 0
Views: 196

Tempest CHR$128 version

This is a fast "Shoot'em Up" by S.P. Kelly originally published by Micro-Gen, 198?. Despite the name this is NOT a ZX81 version of the arcade classic. There's already a Chroma color version of this, posted elsewhere, so I thought I'd also do a CHR$128 conversion as well. This is actually a pretty in...
by GCHarder
Mon Mar 11, 2024 8:13 pm
Forum: GAMES
Topic: Roadkill
Replies: 0
Views: 208

Roadkill

Here's another fun little game. Originally published by Timex as part of the "Mixed Game Bag III" collection, 1982. Programmed by Micheal Orwin. My mods... I've increased the play area to the full 24 line display. Changed control keys to Q-A-O-P instead of 5-6-7-8. Sped up the game with a couple MC ...
by GCHarder
Wed Mar 06, 2024 10:54 pm
Forum: GAMES
Topic: Alien Attack CHR$128 version
Replies: 0
Views: 244

Alien Attack CHR$128 version

This is a frantic little game! The original is only around 900 bytes, 512 bytes for the MC and the rest is for the BASIC loader. The program is interesting in that multiple key presses are permitted, so you can move and fire at the same time, you'll need to do this. There doesn't seem to be an ammo ...
by GCHarder
Fri Mar 01, 2024 7:28 pm
Forum: ZX BASIC
Topic: multi-statement in zx81 basic?
Replies: 5
Views: 384

Re: multi-statement in zx81 basic?

Implementing multistatement lines is actually fairly simple, in MC. It's just a matter of keeping track of the chr addresses in the line. The program "SHREB" from 1986 uses multistatement lines. Since you have a ZXPand you maybe interested in these programs... https://www.sinclairzxworld.com/viewtop...
by GCHarder
Fri Mar 01, 2024 7:17 pm
Forum: Hardware
Topic: Zeddy displaying wrong characters on screen
Replies: 22
Views: 652

Re: Zeddy displaying wrong characters on screen

I recall, along time ago, that I had a similar problem and replacing the voltage regulator fixed the problem. I got this idea from a forum posting but I can't find it. Not being a hardware guy I have no idea why the voltage regulator would garble the display, but replacing it worked for me. Regards ...
by GCHarder
Thu Feb 29, 2024 11:51 pm
Forum: GAMES
Topic: What's happened to revival studios?
Replies: 7
Views: 596

Re: What's happened to revival studios?

If your not aware, some of the best games for the ZX81 are by Bob Smith.

https://bobs-stuff.itch.io/

Regards;

Greg
by GCHarder
Wed Feb 28, 2024 11:06 pm
Forum: ZX BASIC
Topic: "Inline" BASIC Extensions
Replies: 31
Views: 23526

New "Inline" routines-Vertical & Horizontal flips

These are not really new routines just modified for use as "inline" routines.

PRINT USR HFLP

PRINT USR VFLP

Greg
by GCHarder
Sat Feb 10, 2024 9:17 pm
Forum: GAMES
Topic: Falling Balls
Replies: 1
Views: 324

Falling Balls

"Falling Balls" is another interesting strategy game. First published in "Hebdogiciel", the type-in was done by XavSnap. My version is essentially the same but with french text replaced with Google english. I did add a SEED mod so that you can replay the same game again to get a higher score. There ...
by GCHarder
Wed Feb 07, 2024 10:09 pm
Forum: GAMES
Topic: Black Hole
Replies: 1
Views: 429

Black Hole

Black Hole is a nice little strategy game, no twitchy fingers needed. The object of the game is to get the highest score possible. It does take planning your moves. There is no winning you compete against yourself. Strategic hints... Don't collect a Platinum or Diamond asteroid until you have a big ...
by GCHarder
Sun Dec 10, 2023 9:54 pm
Forum: ZX BASIC
Topic: Circles on a ZX80
Replies: 5
Views: 19436

Re: Circles on a ZX80