Sinclair ZX80 / ZX81 / Z88 Forums

Do you have the 8k ram enabled in advanced setting?

I've posted a couple tutorial vid if anyone is interested.

F-Scapes video

https://m.youtube.com/watch?v=HLHk-_FhB ... lmZQ%3D%3D

Mumaps video

https://m.youtube.com/watch?v=7dzazEqrZ ... lmZQ%3D%3D

Regards;

Greg

Hmmmm, The program uses a temporary section of lower RAM to decode the ZASCHI characters to actual HEX values for Chroma's use. I mistakenly thought the 8K-16K area was the default setting, but after reading the docs again I see a switch has to be turned on. So next time I'll put a warning notice "E...

SLOW is SLOW, unless the new ROM fiddles with the video routines it should still be faster. From a design perspective I always felt that an intensive program running in FAST mode, Mandelbrot Fractals for example, should always have a "take a peek" key. The most frustating thing with FAST mode is not...

QUICK MODE for 1500-1000 by Fred Nachbaur Syncware News v5n2 We leave the wonderful world of true hi-res for a moment, to show you just one of any number of fascinating possibilities that can result from experimenting with the ZX81's interrupt-driven display routines. Tested in emulation only. Regar...

Kscope by Zack Xavier Haquer (Yuck, Yuck) From Time Designs v3n1 p13 Hardware required: ZX81 with 16K Rampack optional Chroma interface. A nice kaleidoscope program by Zack Xavier Haquer. Note, the 2 REM line contains the scope characters, these can be changed or even increased to print more scope c...

I've uploaded a Chroma version video of this program for those interested.

https://www.youtube.com/watch?v=UAVANE6KthQ

After 35+ years here's an updated version. 3D Fractals for ZX81. The hardware requirements... You will need a ZX81 (or TS1500) with "64K" RAM. By this I mean that you have to have RAM from 16K to 64K. You also have to have 8K of static RAM, mapped 8-16K, for the high-res display file and associated ...

UDG Based Animations. Hardware Required... ZX81 with ZXPand+UDG4ZXP in CHR$128 mode or ZX81 with ZXPand+Chroma in CHR$128 mode or ZX81 with ZXPand+UDG Board in CHR$128 mode Memory must be available in the 8K to 16K region for UDG font definitions and other stuff. I don't own a Chroma Interface so th...

You just have to enable QS-HRG in the hardware video section and the ROM is loaded automatically.

There's some demo programs in the "HRG-CARDs-DEMO\QS HRG" folder.

Greg