ZX81 Berzerk Clone

Any discussions related to the creation of new hardware or software for the ZX80 or ZX81
Post Reply
Bukster
Posts: 93
Joined: Wed Sep 12, 2018 9:44 am

ZX81 Berzerk Clone

Post by Bukster »

Here are some screenshots of a ZX81 Berzerk clone I'm working on. I was going to post some video footage, but this forum does not seem to allow it. Never mind ,here are some shots from my test screens. There's a lot of work to be done yet, but I'm pleased with it so far.
berzerk1.JPG
berzerk2.JPG
berzerk3.JPG
berzerk4.JPG
palmheads
Posts: 40
Joined: Thu Apr 30, 2009 8:15 am

Re: ZX81 Berzerk Clone

Post by palmheads »

That looks awesome!!!!
User avatar
gammaray
Posts: 590
Joined: Sun Apr 17, 2016 2:44 am
Location: Texas

Re: ZX81 Berzerk Clone

Post by gammaray »

Using the Chroma for ZX81, right?
5-TS1000,UK ZX81<-Sheelagh, US ZX81, 2-TS1500/KDLX , 3-TS2040 printer, 2-TS2020 cassette decks, ZXPAND+AY, ZeddyNET, ZXBlast, UDG, ZX8CCB, AERCO, BUILDS/REPAIRS ZX Spectrum, ZX80 Minstrel, ZXMAX48 v1 v2, 2-TS-2068, ROM, 16kRAM
Bukster
Posts: 93
Joined: Wed Sep 12, 2018 9:44 am

Re: ZX81 Berzerk Clone

Post by Bukster »

Yes, it's chroma enabled, but will also run on standard hardware.

Things to do include; collision detection, bullets, robot movement, the maze and of course evil Otto.
Crayon21
Posts: 348
Joined: Sun Nov 04, 2018 2:33 am

Re: ZX81 Berzerk Clone

Post by Crayon21 »

how did you manage to get Color on the zx81, when it doesn't even support it, not to mention the enemy sprites and the maze? is it machine code?
In Heck, there are two options for perpetual torment:

Eat the Puckerberry and suffer for eternity:
drink nothing but a cocktail of The Last Dab and Mexican Cake blended and served with
habanero slices
:twisted:
User avatar
mrtinb
Posts: 1906
Joined: Fri Nov 06, 2015 5:44 pm
Location: Denmark
Contact:

Re: ZX81 Berzerk Clone

Post by mrtinb »

He coded for the Chroma interface which has color support through a Scart connector.

http://www.fruitcake.plus.com/Sinclair/ ... erface.htm

Another possibility for color (that was available back in the day) is the Lambda Colour Pack.

https://k1.spdns.de/Vintage/Sinclair/80 ... ur%20Pack/

viewtopic.php?f=20&t=1202

The Lambda Colour Pack was made for the Lambda 8300 / PC8300, but worked fine with the ZX81.
Martin
https://zx.rtin.be
ZX81, Lambda 8300, Commodore 64, Mac G4 Cube
Moggy
Posts: 3231
Joined: Wed Jun 18, 2008 2:00 pm

Re: ZX81 Berzerk Clone

Post by Moggy »

I remember a colour interface back then though sadly not the name.
I do remember though it was housed in a white case identical to the rampack used by Stonechip electronics for their Panda range of rampacks.

It may be the one mentioned in this advertisement.

https://www.sinclairuser.com/021/hardwre.htm

LATE EDIT.

It is the one mentioned..
Attachments
SinclairUser_021_Dec_1983_0119.jpg
Fruitcake
Posts: 346
Joined: Wed Sep 01, 2010 10:53 pm

Re: ZX81 Berzerk Clone

Post by Fruitcake »

The operation of the DDC colour interface is described here on the forum. It doesn't sound a very flexible mechanism. I was on the verge of buying one back in the day as the idea of adding colour to the ZX81 sounded incredible but I never did in the end. The DDC interface certainly wouldn't have allowed the flexibility that Chroma is allowing in Berzerk, which uses an attributes file similar in concept to that found on the Spectrum is used. Berzerk can detect if a Chroma interface is present and use the colour facilities if so, else it can fall back to black/white mode. It will be great to see the game finished and released as I think there is a lot of potential for a cracking game there.
Post Reply