New ZX81 Games

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siggi
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Re: New ZX81 Games

Post by siggi »

The rom could be found there: https://www.sinclairzxworld.com/viewtop ... 962#p31962

But I testet GOL-bugfree in EO, using the ZX81x2 rom. And it worked :o

The problems seems to be my USB driver environment, I use to load the program.
The USB driver updates some sysvars, to return information (the size of the loaded program and an error-code) to BASIC/the program, calling the driver. That is no problem for "normal" BASIC-programs, but probably destroys your very special "Basic" program ...

Sorry for that
Siggi
My ZX81 web-server: online since 2007, running since dec. 2020 using ZeddyNet hardware
http://zx81.ddns.net/ZxTeaM
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dr beep
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Re: New ZX81 Games

Post by dr beep »

Siggi,

I have room enough to bypass all sysvar during loading so I will make a version with normal sysvar for you.

Mostly I need every byte but here I need a large screen so I have all room for some code I normally place over sysvar.
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dr beep
Posts: 2005
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Location: Boxmeer

Re: New ZX81 Games

Post by dr beep »

siggi wrote: ↑Tue Nov 07, 2023 2:27 pm The rom could be found there: https://www.sinclairzxworld.com/viewtop ... 962#p31962

But I testet GOL-bugfree in EO, using the ZX81x2 rom. And it worked :o

The problems seems to be my USB driver environment, I use to load the program.
The USB driver updates some sysvars, to return information (the size of the loaded program and an error-code) to BASIC/the program, calling the driver. That is no problem for "normal" BASIC-programs, but probably destroys your very special "Basic" program ...

Sorry for that
Siggi
This version has all startup code outside sysvar.
Your driver may access sysvar but not anymore after loading
GOL-cls-nosys.p
(351 Bytes) Downloaded 27 times
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siggi
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Re: New ZX81 Games

Post by siggi »

Works as expected. :mrgreen:
Thanks a lot
Siggi

PS: Meanwhile I think, that the USB-driver interface (using sysvars SEED and COORDS for return values), which has been designed for usage by BASIC-programs and was later enhanced for usage also by m/c programs, should get a new m/c interface (using registers instead of sysvars) .....
My ZX81 web-server: online since 2007, running since dec. 2020 using ZeddyNet hardware
http://zx81.ddns.net/ZxTeaM
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Jonathan
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Re: New ZX81 Games

Post by Jonathan »

Name of Software: Fun Park ZX81

Author: Jonathan Cauldwell (code and font), Jarrod Bentley (graphics)

Release Date: 18/11/2023

Requirements (eg. 1K, 16K, AY Card, Hi-Res Scheme): 16K, Chroma interface

Description: Rewrite of Fun Park for the 16K Chroma-enabled ZX81

Screenshots:
Image

Image

Download link (if available for download): https://jonathan-cauldwell.itch.io/fun-park-zx81

Commercial / Public Domain / Freeware / Other - please specify? Commercial
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rune
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Joined: Thu Sep 04, 2014 8:35 am

Re: New ZX81 Games

Post by rune »

It runs on my EO (v1.39) with 1K or 16K ram configured and standard ROM
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