Search found 106 matches

by grobda
Fri Mar 23, 2018 3:45 pm
Forum: hardware
Topic: Pulling a bad tooth out (BBC UHF modulator)
Replies: 10
Views: 771

Re: Pulling a bad tooth out (BBC UHF modulator)

vanekp wrote:May be worth checking your power supply especially the capacitors, if they are faulty it could introduce noise on the +5v and cause all sort of problems.
Peter.
I second this, had an arcade PCB that had a faulty capacitor in the sound amp section and was causing both audio and video interference.
by grobda
Wed Feb 28, 2018 12:59 pm
Forum: software: other
Topic: teletext solid block
Replies: 3
Views: 438

Re: teletext solid block

cheers 255 did the trick
by grobda
Wed Feb 28, 2018 11:14 am
Forum: software: other
Topic: teletext solid block
Replies: 3
Views: 438

teletext solid block

probably a simple thing but googling is getting me nowhere; im trying to draw some graphics in mode 7 using teletext "sixels" but cannot seem to get a solid block. i've seen it referred to as 127 but this is 'backspace and delete' and does exactly that. the only two solid blocks i can see (32 and 16...
by grobda
Wed Dec 20, 2017 11:32 pm
Forum: hardware
Topic: A3010: Bodge wires
Replies: 4
Views: 831

Re: A3010: Bodge wires

theres a photo here; http://chrisacorns.computinghistory.org ... 102GL.html sadly the destination is blocked by the floppy connector but might give you a clue. Dont have an a3010 myself.
by grobda
Wed Nov 29, 2017 9:57 am
Forum: hardware
Topic: A blitter for the beeb?
Replies: 59
Views: 4884

Re: A blitter for the beeb?

Nice work =D> Early williams arcade games such as joust and robotron also used a blitter, well 2 customs that handle 4 bits each. There's a few pages with info on it. Not sure if that's any help :lol: Oh and the Atari st could use one too (just fitted one to mine), I assume that's similar to the ami...
by grobda
Tue Sep 26, 2017 6:25 pm
Forum: software: other
Topic: Beeb graphics ripper
Replies: 22
Views: 2203

Re: Beeb graphics ripper

I can't get that beeb version of the tool to load. I downloaded the al52.dll but now gives me --------------------------- beebgfxrip.exe - Application Error --------------------------- The application was unable to start correctly (0xc000007b). Click OK to close the application. -------------------...
by grobda
Tue Sep 26, 2017 2:12 pm
Forum: software: other
Topic: Beeb graphics ripper
Replies: 22
Views: 2203

Re: Beeb graphics ripper

As an aside theres a bit of chat over at the atari forums on a 'universal' 16 colour palette, which came from this thread; http://pixeljoint.com/forum/forum_posts.asp?TID=12795 which is being used quite effectively in a WIP Atari STE (also a 16 of 4096 colour palette in lo rez) conversion of ghouls ...
by grobda
Mon Sep 25, 2017 7:50 pm
Forum: software: other
Topic: Beeb graphics ripper
Replies: 22
Views: 2203

Re: Beeb graphics ripper

needed to install visual studio and allegro to run this otherwise its missing the following dll's; allegro-5.2.dll vcruntime140d.dll ucrtbased.dll had a play and found some gfx :D just no idea what to do with them. a palette for colours 8-15 would be nice as snapper maze tiles are currently black-on...
by grobda
Sat Sep 23, 2017 10:17 pm
Forum: hardware
Topic: Gotek Working on A3000 :))
Replies: 18
Views: 2554

Re: Gotek Working on A3000 :))

I'm using flashfloppy, but the latest HxC firmware supports it too;

http://hxc2001.com/download/floppy_driv ... _notes.txt
by grobda
Sat Sep 23, 2017 9:42 am
Forum: hardware
Topic: Gotek Working on A3000 :))
Replies: 18
Views: 2554

Re: Gotek Working on A3000 :))

The OLED screen arrived today and wow! a lot nicer and clearer than the LCD one;

Image

needs a bit of modding to fit in the case, but there's enough room.
by grobda
Sat Sep 23, 2017 9:40 am
Forum: software: classic games
Topic: Galaforce for NULA (16 Colour)
Replies: 17
Views: 1928

Re: Galaforce for NULA (16 Colour)

cool I'll have a play with that :) I understood how the pixels were stored but I couldn't figure out how to split the bytes. I've been looking for Graphics by *loading files to screen ram in mode 2; if they're stored as 4bpp sequential bitmaps then they're recognizable, but usually not in the palett...
by grobda
Fri Sep 22, 2017 9:37 pm
Forum: hardware
Topic: Gotek Working on A3000 :))
Replies: 18
Views: 2554

Re: Gotek Working on A3000 :))

much better with a screen, you can use it in config-less mode which just cycles through any HFE files on the drive; http://www.ukvac.com/forum/uploads/778/beebgotek.jpg I'm waiting for some smaller OLED screens that should fit in the Gotek fascia where the lcd counter goes; http://www.ebay.co.uk/itm...
by grobda
Fri Sep 22, 2017 5:56 pm
Forum: software: classic games
Topic: Galaforce for NULA (16 Colour)
Replies: 17
Views: 1928

Re: Galaforce for NULA (16 Colour)

That a pre-release? its still september 8) Incidentally, my goal to start was to recolour joust (or skirmish) - I've done a more representative palette, and the play area is called 'SCREEN' in the atarisoft version, which you can *load to 3000 to look at, so seems relatively simple to edit. There's ...
by grobda
Fri Sep 22, 2017 5:44 pm
Forum: software: classic games
Topic: Galaforce for NULA (16 Colour)
Replies: 17
Views: 1928

Re: Galaforce for NULA (16 Colour)

I'm interested in the image without the header, how did you separate them? I just deleted it with HXD hex editor - its at the front, I forget how many bytes exactly, I think Simon documented it in the readme, deleting it leaves the 20k of screen data. tools look good, any chance of a public release?
by grobda
Fri Sep 22, 2017 5:09 pm
Forum: software: classic games
Topic: Galaforce for NULA (16 Colour)
Replies: 17
Views: 1928

Re: Galaforce for NULA (16 Colour)

nice work! You can use Simons sideshow creator to get the title screen, as It creates a uncompressed file of the picture when it makes the disk image. I've loaded these to screen ram by removing the header and setting the palette myself I've been trying to meddle with sprites myself, but the way the...
by grobda
Mon Sep 18, 2017 2:45 pm
Forum: hardware
Topic: Open source firmware for Gotek floppy emulator released
Replies: 162
Views: 12658

Re: Open source firmware for Gotek floppy emulator released

Sorry not tried it on an arc yet, just a BBC B and Dragon 32, must have put this in 32-bit hardware section by accident (although with an arm 7 onboard it is technically a 32bit device ;p ). Is uses the HxC software for creating floppies so I'd guess it will work - If I can muster the will to dig ou...
by grobda
Thu Sep 14, 2017 10:42 pm
Forum: other vintage computer hardware, software and games
Topic: Eastern Blok computers
Replies: 8
Views: 1236

Eastern Block computers

Interesting stuff , there have been a few popping up on ebay recently. Was in Budapest a couple of years ago and saw a couple tucked away in a museum (with a nice dot matrix lenin); a rather severe looking 'ZH80' and possibly the most heavily annnotated computer in existence; http://www.ukvac.com/fo...
by grobda
Wed Sep 13, 2017 5:43 pm
Forum: off-topic
Topic: how is it called metal box for 3,5 or 5,25
Replies: 21
Views: 2578

Re: how is it called metal box for 3,5 or 5,25

I've bought a Takachi MB-13 from RS, plenty of room for two 3.5" drives and a PSU (the plan is to fit a 3.5 floppy and a Gotek floppy emulator, with a switch to swap them between DF0 and DF1). The box seems light yet sturdy, made of folded aluminium - just wondering how to cut a neat square hole in ...
by grobda
Wed Sep 13, 2017 4:17 pm
Forum: hardware
Topic: Palettemate / enhanced video ULA with 4096 colours
Replies: 583
Views: 48905

Re: Palettemate / enhanced video ULA with 4096 colours

I seem to remember a hex editor for the atari st that displayed data as pixels (2 pixels per byte as it also had 4bpp palette) which you could edit and i think import/export... something between a hex editor and paint program. fuzzy memory mind you this was over 25 years ago. any such tools exist fo...
by grobda
Wed Sep 13, 2017 4:08 pm
Forum: hardware
Topic: Palettemate / enhanced video ULA with 4096 colours
Replies: 583
Views: 48905

Re: Palettemate / enhanced video ULA with 4096 colours

had a muck about with the joust (skirmish) palette, unfortunately the scores have a cross hatched background that means they get lost, and the pterodactyl looks rubbish, but the rest is looking quite close to the arcade. I tried editing out the cross-hatch (the screen graphics are in skirm2) using a...
by grobda
Tue Sep 12, 2017 9:00 pm
Forum: hardware
Topic: Desoldering components
Replies: 10
Views: 1128

Re: Desoldering components

I use a duratool desolder station - zd-915, seems to be a slightly older model than the current one. It's a godsend for removing ICs, I fix the odd arcade PCB and this invariably involves removing IC's, preferably intact, as some aren't easily replaced. Definitely paid for itsself in time saved alon...
by grobda
Tue Sep 12, 2017 6:53 pm
Forum: hardware
Topic: Open source firmware for Gotek floppy emulator released
Replies: 162
Views: 12658

Open source firmware for Gotek floppy emulator released

don't think this has been mentioned here, just tried it and works a treat;

https://github.com/keirf/FlashFloppy
by grobda
Tue Sep 12, 2017 6:49 pm
Forum: hardware
Topic: NuLA demos
Replies: 130
Views: 9957

Re: NuLA demos

awesome stuff!

took me a while to get it running, beeb b with retroclinic SRAM mod & 1770 DFS

for any other noobs with same setup ( I had to google around a bit on how to use SRAM);

*SRLOAD SOTBROM 8000 7

ctrl-break

CH."RUNME"
by grobda
Thu Sep 07, 2017 9:47 pm
Forum: emulators
Topic: Using a real HDD with Arculator
Replies: 5
Views: 1587

Re: Using a real HDD with Arculator

I use a raspberry pi with riscOS installed to read and write to the first partition of an Arc HDD. I'm using a CF to IDE as the HDD on the Arc and CF USB reader for the Pi but it may also work with an IDE drive and a IDE to USB adaptor.
by grobda
Mon Sep 04, 2017 11:16 am
Forum: hardware
Topic: Retro Cassette recorders
Replies: 15
Views: 1562

Re: Retro Cassette recorders

richmond62 wrote:Any advice / recommendations would be great.
use anything other than a tape recorder for data storage.
by grobda
Tue Aug 15, 2017 11:35 am
Forum: for sale / freebies
Topic: BeebSCSI mini
Replies: 168
Views: 15893

Re: BeebSCSI mini

pretty sure the site has not been updated as ive been checking it every couple of days
by grobda
Wed Aug 09, 2017 10:27 am
Forum: off-topic
Topic: how is it called metal box for 3,5 or 5,25
Replies: 21
Views: 2578

Re: how is it called metal box for 3,5 or 5,25

takachi mb series are basic aluminium boxes, RS stock them in UK

http://www.takachi-enclosure.com/data/c ... 83-184.pdf
by grobda
Sun Aug 06, 2017 12:43 pm
Forum: programming
Topic: How do you save a screen
Replies: 448
Views: 25358

Re: How do you save a screen

just downloaded art4win - nice work! :) been mucking about with beeb graphics, drew this in beebspriter and paint; rtype.png Very inspiring, is it really only 160x256? good point, I double-checked and it isn't. not sure what happened there can only think i got muddled up with resolutions. so here's...
by grobda
Sun Jul 16, 2017 8:55 pm
Forum: programming
Topic: How do you save a screen
Replies: 448
Views: 25358

Re: How do you save a screen

just downloaded art4win - nice work! :) been mucking about with beeb graphics, drew this in beebspriter and paint; rtype.png still a bit rough and off-scale but i got carried away to get something mostly finished - an idea of what rtype in mode 2 might look like (impossible i know) :lol: art4win is ...
by grobda
Fri Jul 14, 2017 8:09 am
Forum: software: other
Topic: He-Man music demo
Replies: 12
Views: 1904

Re: He-Man music demo

Ditto, this sounds great! Did you compose on the Beeb directly or on a PC tracker? Still wondering if there is interest / mileage in a simple BBC tracker music program that works with SN chip data directly. I'd like one, but not saying i'd do anything productive with it ;) spent last night mucking ...