Search found 2538 matches

by tricky
Tue Jul 17, 2018 4:28 pm
Forum: introduce yourself
Topic: Hello!
Replies: 10
Views: 107

Re: Hello!

That's great, I look forward to hearing your beeb tracks.
by tricky
Mon Jul 16, 2018 8:16 pm
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 189
Views: 7088

Re: RGB to HDMI using a Pi Zero and a small CPLD

Well done.
by tricky
Mon Jul 16, 2018 8:10 pm
Forum: introduce yourself
Topic: Hello!
Replies: 10
Views: 107

Re: Hello!

Welcome, although I usually do arcade ports and try to keep the music similar, I never write it myself. I'm doing scramble at the moment, which doesn't really need music and it would be tricky as I am using one channel for "womwom", one for bombs and one for shooting with explosions taking the white...
by tricky
Mon Jul 16, 2018 4:10 pm
Forum: introduce yourself
Topic: Atom Owner from Smalltown, Canada
Replies: 14
Views: 145

Re: Atom Owner from Smalltown, Canada

Welcome, there have been a few of us just got ATOMs.
Did you program in BASIC or assembler?
by tricky
Mon Jul 16, 2018 4:08 pm
Forum: hardware
Topic: 2nd User port for Beeb?
Replies: 96
Views: 6172

Re: 2nd User port for Beeb?

Don't know if this is still useful! It's a bit early and I've woken after dreaming what I'm about to write so forgive me if it's nonsense! Would it be possible to change the pins on the user port used by UPURS or MMBEEB so that they don't clash as they do at present and have them both work off one u...
by tricky
Mon Jul 16, 2018 12:09 pm
Forum: software: new games
Topic: Atomic AGD
Replies: 60
Views: 3351

Re: Atomic AGD

Did the sprite plotting get optimised?

If you want 50+Hz playback on youtube, the source has to be 720p+, as does the playback.
by tricky
Sun Jul 15, 2018 6:13 pm
Forum: software: new games
Topic: New version of Scramble for the beeb (going well)
Replies: 64
Views: 3484

Re: New version of Scramble for the beeb (going well)

Is it just the picture, or is there a problem with scramble?
by tricky
Sun Jul 15, 2018 6:10 pm
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 189
Views: 7088

Re: RGB to HDMI using a Pi Zero and a small CPLD

Does PLLH allow the 50hz to be adjusted?
Might it be possible to remove the frame delay in the future?
by tricky
Sun Jul 15, 2018 4:02 pm
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 189
Views: 7088

Re: RGB to HDMI using a Pi Zero and a small CPLD

I've always thought that the TV uses the centre of the pulse. If it is easier to only support 7 or 8, rather than start + 1/2 width, I can change the rally-x default. I thought one of the scramble clones might have and maybe JCB digger. I have some old code and I suspect richtw might. Astro blaster ...
by tricky
Sun Jul 15, 2018 3:21 pm
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 189
Views: 7088

Re: RGB to HDMI using a Pi Zero and a small CPLD

I'm not near a beeb, but I would expect making the pulse wider would delay the effective timing and move the visible pixels to the left.

I believe rally-x works in the same way as 3d pool's scrolls, although i do tidy the sides.
by tricky
Sun Jul 15, 2018 3:09 pm
Forum: software: new games
Topic: New version of Scramble for the beeb (going well)
Replies: 64
Views: 3484

Re: New version of Scramble for the beeb (going well)

Glad it works.
How is your event going?
Looks a bit quiet ;)
by tricky
Sun Jul 15, 2018 12:36 pm
Forum: software: new games
Topic: New version of Scramble for the beeb (going well)
Replies: 64
Views: 3484

Re: New version of Scramble for the beeb (going well)

No changes to timing, but I have added hitting the saucers and their explosions (this took ~200 bytes). I think the main TODOs are: - player lives and deaths - shot, bomb and explosion sounds - joystick support - launching rockets - killing the base - fuel! I have 303 bytes left and some stack space...
by tricky
Sun Jul 15, 2018 12:27 pm
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 189
Views: 7088

Re: RGB to HDMI using a Pi Zero and a small CPLD

I nearly always change the h-sync pulse position as my screen is usual 4/5 the default width. I think supporting this for modes 0, 1 and 2 is most useful, after that the jump is quite large and software is more feasible. I will be offering other options for width and position in Rally-X, but having ...
by tricky
Sat Jul 14, 2018 6:46 pm
Forum: acorn atom
Topic: new to atom: ram rom mmc joystick
Replies: 18
Views: 290

Re: new to atom: ram rom mmc joystick

I already did ;)
by tricky
Sat Jul 14, 2018 6:32 pm
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 189
Views: 7088

Re: RGB to HDMI using a Pi Zero and a small CPLD

Main Tis is1920x1080, can't check monitor at the mo.
I did have a mad thought about the new 1024x768 HDMI panel and adapter from pimoria pimoroni and a luggable Beeb.

EDIT: I also have a 1920x1200 DVI monitor.
by tricky
Sat Jul 14, 2018 3:16 pm
Forum: acorn atom
Topic: new to atom: ram rom mmc joystick
Replies: 18
Views: 290

Re: new to atom: ram rom mmc joystick

AtomMmc arrived today, had to bodge a power connector (which hasn't arrived yet) as I couldn't wait to try it. AtomMmc.jpg Was the original idea to solder it to the connector instead of the ribbon cable? I'm trying to find a good place to mount it, current options are: Leave it internal attached to ...
by tricky
Sat Jul 14, 2018 11:42 am
Forum: software: other
Topic: TMS-5220 & Arcade Speech ROMS
Replies: 19
Views: 422

Re: TMS-5220 & Arcade Speech ROMS

Great video, shame its 25Hz, but I guess 99% of the content is fine and 99% of people wouldn't notice the 1% wasn't at 50Hz anyway ;)
by tricky
Fri Jul 13, 2018 10:42 pm
Forum: projects
Topic: Elite BeebAsm Source
Replies: 9
Views: 285

Re: Elite BeebAsm Source

Thanks Kieran, top man (not the shop).
by tricky
Thu Jul 12, 2018 9:46 am
Forum: software: new games
Topic: Galaforce 3 Teaser
Replies: 9
Views: 381

Re: Galaforce 3 Teaser

Nice, I've been waiting for this ;)
by tricky
Wed Jul 11, 2018 9:26 pm
Forum: hardware
Topic: New Master Setup
Replies: 3
Views: 192

Re: New Master Setup

Nice.
It's nice to be comfortable at your beeb.
by tricky
Wed Jul 11, 2018 5:48 pm
Forum: introduce yourself
Topic: Just saying Hi
Replies: 11
Views: 237

Re: Just saying Hi

Welcome. If you had a beeb at home, an RGB to SCART cable and portable CRT from the charity shop do quite well, but not if it was at school I guess. Mode Daves = more chance of guessing someones name as I can never remember them! If you haven't already found it, bbcmicro.co.uk has nearly everything ...
by tricky
Wed Jul 11, 2018 5:40 pm
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 189
Views: 7088

Re: RGB to HDMI using a Pi Zero and a small CPLD

I have some 6 pin dins for my RGB to SCART cables and am happy to make my own cable if it helps.
by tricky
Wed Jul 11, 2018 5:34 pm
Forum: software: new games
Topic: New version of Scramble for the beeb (going well)
Replies: 64
Views: 3484

Re: New version of Scramble for the beeb (going well)

Thanks Tom,
even stranger.
The timing looks to be about 2 scan lines too early as opposed to 2 lines too late on beebem.
by tricky
Wed Jul 11, 2018 5:24 pm
Forum: hardware
Topic: Connecting SEGA Mega Drive and Atari controllers to the beeb
Replies: 32
Views: 1913

Re: Connecting SEGA Mega Drive controllers to the beeb

Made up a batch of minimal dual Atari adapters, may have made too many as I only have one Atari Joystick (the rest are SEGA).
AtariDual.jpg
Still, it was a good excuse to tidy the office a bit.
office_tidy.jpg
by tricky
Tue Jul 10, 2018 9:09 pm
Forum: acorn atom
Topic: Acorn Atom and AtoMMC
Replies: 3
Views: 135

Re: Acorn Atom and AtoMMC

Is the 6522 (white socket in the top left I think) required for the AtoMMC board?
by tricky
Tue Jul 10, 2018 1:44 pm
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 189
Views: 7088

Re: RGB to HDMI using a Pi Zero and a small CPLD

I would love to be a beta tester. I have a couple of HDMI monitors and several TVs, several scart cables and a couple of never used pi zeros. I do not have any Linux (or compatible) build environments, but I do have a couple of blaster/JTAG adapters. I also have a cheap USB scope which I am planning...
by tricky
Tue Jul 10, 2018 5:25 am
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 189
Views: 7088

Re: RGB to HDMI using a Pi Zero and a small CPLD

I was only looking to match a CRT, which would be twice the current resolution. Being able to do better would be nula territory. I'm not promising that I won't ask for it in future, or saying that nobody wants it now ;) From the CRT experiments that I have done, +/-1 on the width is OK. I did find o...
by tricky
Mon Jul 09, 2018 6:57 pm
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 189
Views: 7088

Re: RGB to HDMI using a Pi Zero and a small CPLD

With the existing CPLD code and assuming that that code is reading MODE 0 width pixels, in which case, there would be two versions: 1. as is 2. start with four black pixels 0..3 .loop WAIT_FOR_PSYNC_1, read pixels 4..7. store pixels to buffer WAIT_FOR_PSYNC_0, read pixels 0..3 jmp loop or whatever i...
by tricky
Mon Jul 09, 2018 4:39 pm
Forum: off-topic
Topic: Are kids still as excited by school computers as we once were?
Replies: 16
Views: 320

Re: Are kids still as excited by school computers as we once were?

When I was at school, there wasn't one until I was 12 and then we had one for the whole school; a Sharp MZ80K. This caused great excitement in 0.3% of pupils (two mates and I) although the ratio may have peaked at nearer 3% later. My daughter is now 12 and can't stand computer lessons, whether it is...
by tricky
Mon Jul 09, 2018 4:29 pm
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 189
Views: 7088

Re: RGB to HDMI using a Pi Zero and a small CPLD

... I have no idea if there is space in the CPLD to do this.... Somehow I doubt it. Dave I am hoping that it can be squeezed in to the PI (after h-sync and before the end of h-total) so that the CPLD doesn't have to know. I think you said (but I can't find it now) that the h-sync is passed through ...