Sinclair ZX80 / ZX81 Forums

Just 16K RAMpack wouldn't work, it also has to be Hi Res capable.

Regards;

Greg

Here's a list of the ROM calls used, the Siggi problem is caused by the STR$ function being moved. ;------- Rom and Ram Symbols ------- SLOW equ $0F2B DISPLAY_5 equ $02B5 DISPLAY_3 equ $0292 LOOP_11 equ $0216 SCANNING equ $0F55 FP_TO_A equ $15CD FIND_INT equ $0EA7 STACK_BC equ $1520 FP_TO_BC equ $1...

I'll check the whole listing tonight to see if there are any another esoteric ROM calls.

Regards;

Greg

The "FILL" routine makes a call to n-mod-m (1C37) at 48F5, it's no longer at that location. The program doesn't crash because it hits the RST 08 with error code E6 at 1C49, causing the stack to reset and return to BASIC. That's why nothing is printed.

Regards;

Greg

Just posted a "MacroLIFE" animation video.

https://www.youtube.com/watch?v=A8oVXCXJyZc

I'll add other videos and demos here as I get them done.

Regards;

Greg

Here's a pretty nice setup at ebay... https://www.ebay.com/itm/SINCLAIR-TIMEX-TS1000-ZX81-computer-in-DKTronics-console-64-KRAM-8K-NVRAM/362355938165?epid=2130390092&hash=item545e18d375:g:GiYAAOSw88RbJTSD Keyboard, 64K, Hunter NVM Board, composite video, 3 books, and a "Buy It Now" price of $149.95,...

Micro Cornucopia was an old computer magazine published in the 80's. While not specifically geared towards the Sinclair computers, I always found it an interesting read. It's mostly a magazine for "programmers" especially C and Pascal. They also published hardware projects as well. It was mostly "me...

A nice new video, unfortunately in Portuguese, must have originated from Brazil.

"Description of the different "High Resolution" (HIRES) systems in the Sinclair ZX81"

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

Regards;

Greg

While searching around on the net I found these at this site...

https://auction.catawiki.com/kavels/176 ... clair-zx81

But there is no info on what they are.

They look like some kind of ZX81 clone with an old PC game port interface.

Regards;

Greg

Also, just letting you guys know that the digital downloads for my other games are now available via http://revivalstudios.itch.io , so you can donate whatever you like for most stuff and try the other games yourself. Thanks for this, I've always wanted to buy your games but that extra VAT tax alwa...