Search found 42 matches

by Cosmium
Sun Dec 22, 2019 1:06 am
Forum: Other Retro Stuff
Topic: What's your second favourite retro computer?
Replies: 14
Views: 587

Re: What's your second favourite retro computer?

I think for me it's the Amiga. When I got the 500 it was such a massive step up to have those hardware chips handling the sprites, playfields and amazing sound. I remember making demos in 68000 piling on the graphics and sound without having barely any impact on performance. It was amazing! Upgradin...
by Cosmium
Fri Dec 13, 2019 12:23 am
Forum: Programming
Topic: A miracle when it works first time!
Replies: 29
Views: 2365

Re: A miracle when it works first time!

R-Tape wrote:
Wed Dec 11, 2019 12:46 pm
I got different effects in different places each time.
Those are the hardest to find and fix aren't they? And when you finally trace it back to the root of the bug, there's usually some incorrect assumption made (like in this case) causing that head-slapping moment of "oh of course"!
by Cosmium
Fri Dec 13, 2019 12:16 am
Forum: Programming
Topic: A miracle when it works first time!
Replies: 29
Views: 2365

Re: A miracle when it works first time!

Ast A. Moore wrote:
Thu Dec 12, 2019 5:53 pm
Oh, I just realized that Quadron didn’t run on the +2A/+3, so I developed a bugfix for it. I only tested the demo version, so @Cosmium, if you’re interested, PM me for details. I believe my fix should make it compatible with all Spectrums in all modes (48 and 128K).
Nice! PM'd :)
by Cosmium
Wed Dec 11, 2019 3:53 am
Forum: Programming
Topic: A miracle when it works first time!
Replies: 29
Views: 2365

Re: A miracle when it works first time!

The wrapping paper is a classic runaway stack. Rogue bytes get executed as code, and it goes into a loop pushing pairs of bytes all the way down memory from the head of the stack to the bottom of memory, passing through the attributes and then the pixels as it goes :) I bet you're right! I fixed th...
by Cosmium
Mon Dec 02, 2019 3:44 am
Forum: Programming
Topic: A miracle when it works first time!
Replies: 29
Views: 2365

Re: A miracle when it works first time!

A few days ago, while programming some fixed-point maths routines, I was suddenly rewarded with this festive-themed crash. Just before the (c) message it kinda looks like a full screens-worth of gaudy xmas wrapping paper, if you squint hard enough!


Image
by Cosmium
Sat Nov 23, 2019 4:03 am
Forum: Games/Software
Topic: The best Speccy game by Softek: vote
Replies: 17
Views: 801

Re: The best Speccy game by Softek: vote

R-Tape wrote:
Wed Nov 20, 2019 8:06 pm
Morkin wrote:
Wed Nov 20, 2019 7:59 pm
Gawd, don't know any of these. Might have a go at a few.
Just vote for Microbot.
I'm gathering you really are a true fan of the game :D
by Cosmium
Sun Nov 17, 2019 3:12 am
Forum: Website
Topic: Happy birthday, SC
Replies: 13
Views: 717

Re: Happy birthday, SC

So, I'd just like to say that like others I'm happy that this place exists. It's like an oasis in the desert. Me too! I'm glad I found it. There's a good, friendly vibe here. And I'm happy it's a forum - it's very accessible, usable and straight forward - and not a social media format, even if that...
by Cosmium
Wed Nov 13, 2019 1:47 am
Forum: Programming
Topic: Windows toolkit for Spectrum Assembly?
Replies: 13
Views: 763

Re: Windows toolkit for Spectrum Assembly?

I found the easiest entry to Spectrum assembly programming on the PC is via the ZX Spin emulator. You can simply start it up, go to the menu item Tools > Z80 Assember, then type in your assembly listing into the window that appears, e.g.: ORG 32768 LD HL,16384 LD (HL),42 RET Then File > Assemble. Cl...
by Cosmium
Fri Nov 01, 2019 8:58 pm
Forum: Showcase your work!
Topic: What are your current ZX Spectrum projects/games that you are working on?
Replies: 36
Views: 2092

Re: What are your current ZX Spectrum projects/games that you are working on?

Having disassembled / reverse-engineered Quadron's code last year to prepare it for release (the original source was lost), I realised I've now got a good bunch of routines that would form a pretty solid starting point for a new game. So I've been tinkering on and off modifying and enhancing some of...
by Cosmium
Thu Oct 24, 2019 12:58 am
Forum: Brand new software!
Topic: Quadron, a uMIA from 1988... that you can buy now!!
Replies: 29
Views: 3400

Re: Quadron, a uMIA from 1988... that you can buy now!!

Free demo version of Quadron is available now - as a download at itch.io - for anyone who'd like to give it a try! :D

https://cosmium.itch.io/quadron