Sinclair ZX80 / ZX81 / Z88 Forums

New game...

Link...

http://inufuto.web.fc2.com/8bit/yewdow/#zx81

Video...

https://m.youtube.com/watch?v=UNI27qVK6 ... g4MQ%3D%3D

A couple music vids inspired by 3D Monster Maze. Pretty catchy tunes and fun to watch. There may be others Funkin' Monster Maze... https://www.youtube.com/watch?v=cqJWJ_0BFV4 HUNT... https://www.youtube.com/watch?v=UMWOaM62Hqg There may be an actual game attached to these somewhere. Enjoy; Greg

ZX81 with 16K

Demo video...

https://www.youtube.com/watch?v=cF_bwJSmYxQ

I was watching "Wargames" and was curious about the IMSAI 8080 featured in the film.

I found this website which specializes in computers featured in films and TV...

This is the ZX81 section...

https://www.starringthecomputer.com/computer.html?c=44

Greg

Two new commands...

PRINT USR SBKG Saves sprite background

And

PRINT USR SPRP Prints sprite

More info in ZIP.

Demo video...

https://m.youtube.com/watch?v=2wG8rTJOi ... g4MQ%3D%3D

Regards;

Greg

Demo video...

https://m.youtube.com/watch?v=PGGrPzcxgVE

The amulet and bracelet ought to look familiar. I'll be posting a redefine UDGs app shortly.

Hardware required... ZX81 with ZXPand+UDG4ZXP in CHR$128 mode or ZX81 with ZXPand+Chroma in CHR$128 mode or ZX81 with ZXPand+CHR$128 board ================================== CHR$128 Mode CHR$128 mode uses bit 0 of the I register to select between two tables of de- finitions. This allows redefinition...

These instructions in the MC cause the problem... 43F8 LD HL,$52DC ;21,212 43FB LD ($4029),HL ;Set NXT-LINE to 21,212 NXT-LINE is the address of the next line to be executed. Address 21,212 is the address of line 1500 LET A=USR 17400 Essentially this is a game loop, on return to BASIC line 1500 will...

This is a game I recently found at archive.org, it's a new one to me. Came out in 1982.

It's a scrolling "fortress defense" game. One unique aspect is that the games speeds up when you
Shoot and don't hit anything.

Enjoy;

Greg