Search found 316 matches

by simonm
Sat Jan 07, 2017 1:14 am
Forum: general
Topic: The BBC Micro In Pixels
Replies: 20
Views: 3945

Re: The BBC Micro In Pixels

Yep! Would even consider paying even £20 for such a shiny thing.
by simonm
Sat Jan 07, 2017 1:07 am
Forum: general
Topic: Byte The Apple Music Demos
Replies: 4
Views: 1180

Re: Byte The Apple Music Demos

Yeah, I loved these back in the day! Awesome work.
by simonm
Sat Jan 07, 2017 12:38 am
Forum: new projects and releases: demoscene
Topic: Bitshifters present Beeb Tracker - new VGM music demos!
Replies: 48
Views: 7895

Re: Bitshifters present Beeb Tracker - new VGM music demos!

Hey Dave, thanks for the heads up - I tried it just now, but seems ok? (ie. messages come thru to our slack channel ok)
What browser are you using?
by simonm
Wed Dec 28, 2016 12:22 pm
Forum: 8-bit acorn emulators
Topic: Compiling B-em with Visual Studio 2010
Replies: 24
Views: 5209

Re: Compiling B-em with Visual Studio 2010

Also - there's a B-Em repo in the stardot GitHub org, would it make sense to treat that as the "official" development source? (assuming thats ok with the original authors)
by simonm
Wed Dec 28, 2016 12:19 pm
Forum: 8-bit acorn emulators
Topic: Compiling B-em with Visual Studio 2010
Replies: 24
Views: 5209

Re: Compiling B-em with Visual Studio 2010

This might be a windows 10 issue Kieran - I have the same audio issue with B-Em on my laptop, but I'm using a release binary from the website.
by simonm
Sun Dec 25, 2016 9:18 pm
Forum: 8-bit acorn software: other
Topic: Importing pure text basic program files in to real BBC
Replies: 10
Views: 2348

Re: Importing pure text basic program files in to real BBC

You can use BeebAsm to create a SSD containing your BASIC programs, as it has a BBC BASIC tokeniser function. Create a text file called mydisk.asm and add something like the following commands: PUTBASIC "mytextfile.txt", "MYPROG" ...[repeat for any other basic programs you have in text file format] ...
by simonm
Wed Dec 14, 2016 7:20 pm
Forum: for sale / freebies
Topic: Trading A3010
Replies: 15
Views: 2192

Re: Trading A3010

Trapper - I'd be interested in your A3010, let me know how much you had in mind for it.
Thanks
Simon
by simonm
Sat Dec 03, 2016 11:04 pm
Forum: 32-bit acorn hardware
Topic: Atomwide Ethernet V - Topcat removal ?
Replies: 6
Views: 1287

Re: Atomwide Ethernet V - Topcat removal ?

Thanks, yes, TCP/IP is all I need and an FTP server probably.
I tried out the podule tonight and it seems functional - ShareFS has appeared on the taskbar.
I'll check out the links you shared.
by simonm
Fri Dec 02, 2016 9:35 pm
Forum: 8-bit acorn hardware
Topic: Ideas for enhanced CRTC replacement with hardware sprites
Replies: 43
Views: 5668

Re: Ideas for enhanced CRTC replacement with hardware sprites

Fascinating thread. It occurred to me that if either of these fantasty hardware mods (RobC's 4096 colour ULA & some type of enhanced crtc) became real, most folks would surely want both upgrades, so maybe that could help design decisions where these two projects might work hand in glove with each ot...
by simonm
Thu Nov 24, 2016 2:26 pm
Forum: 8-bit acorn hardware
Topic: Palettemate / enhanced video ULA with 4096 colours
Replies: 597
Views: 82232

Re: Palettemate / enhanced video ULA with 4096 colours

Do you think there might be some way for a hardware mod like this to be detected in software somehow? So that any code that uses it can be enabled or disabled accordingly only if it is present?
by simonm
Thu Nov 24, 2016 12:56 pm
Forum: 8-bit acorn hardware
Topic: Palettemate / enhanced video ULA with 4096 colours
Replies: 597
Views: 82232

Re: Palettemate / enhanced video ULA with 4096 colours

Would it be possible with this system to use the colour interrupt technique to poke new palettes during the raster? Given all the recent innovations with 8-colour Mode1 trickery, having access to 4096 colours could pave the way for some truly amazing graphics.
This project is unbelievably exciting! :)
by simonm
Thu Nov 24, 2016 12:51 pm
Forum: development tools
Topic: BeebAsm
Replies: 125
Views: 16353

Re: BeebAsm

Steve has made some excellent additions to BeebAsm, which would be great to merge into master. Moving the repo to the stardot Github makes a lot of sense.
by simonm
Wed Nov 23, 2016 12:50 am
Forum: 8-bit acorn hardware
Topic: Palettemate / enhanced video ULA with 4096 colours
Replies: 597
Views: 82232

Re: Palettemate / enhanced video ULA with 4096 colours

Rich Talbot-Watkins wrote:Amazing stuff Rob! 16 proper colours in Mode 2 was always the biggest thing on my wishlist!
YES! Even 8 half brite RGB levels would have been all kinds of awesome!
by simonm
Mon Nov 21, 2016 9:34 pm
Forum: 8-bit acorn emulators
Topic: Ceefax Engineering Test Page - BeebEm 4.13 & B-em
Replies: 67
Views: 15859

Re: Ceefax Engineering Test Page - BeebEm 4.13 & B-em

Dreamland Fantasy wrote:Oh, and don't use BeebEm for Mode 7 teletext stuff as its implementation is flawed.
Oops! :oops: That might explain a few things...
The hold graphics difference I'm seeing is that BeebEm seems to use a held control code one byte sooner than the equivalent teletext render.
by simonm
Mon Nov 21, 2016 8:49 pm
Forum: 8-bit acorn emulators
Topic: Ceefax Engineering Test Page - BeebEm 4.13 & B-em
Replies: 67
Views: 15859

Re: Ceefax Engineering Test Page - BeebEm 4.13 & B-em

I'm currently playing with some Mode7 teletext content. Having read this thread its clear theres a couple of differences between the teletext chip in the Beeb and how it renders raw teletext byte stream. For instance if I load the TESTPAGE from jgharstons Samples.zip directly to &7C00 I note that th...
by simonm
Mon Nov 21, 2016 8:37 pm
Forum: 32-bit acorn hardware
Topic: Atomwide Ethernet V - Topcat removal ?
Replies: 6
Views: 1287

Re: Atomwide Ethernet V - Topcat removal ?

Hi all,
I've just acquired one of these for my A5000 (RISC OS 3.1). As a total newbie on these things can any helpful person point me in the direction of what software or commands I'll need to get my A5000 talking with my home network?
TIA!
by simonm
Sat Nov 19, 2016 2:27 pm
Forum: 8-bit acorn software: other
Topic: DFS - Get sector for a file
Replies: 14
Views: 2319

Re: DFS - Get sector for a file

Ok I rustled up some code to load data by fetching files one sector at a time (first loads sector to memory, then copies that page to SWR) and its MUCH faster. Had to do shenanigans to load the catalogue myself and parse it looking for filename matches, get file attributes etc. Have attached the cod...
by simonm
Fri Nov 18, 2016 1:14 am
Forum: 8-bit acorn emulators
Topic: BeebEM on GitHub
Replies: 9
Views: 2876

Re: BeebEM on GitHub

We should perhaps look at getting a fork of this into the stardot github team repo in case any other personal accounts go down.
by simonm
Thu Nov 17, 2016 2:10 pm
Forum: 8-bit acorn software: other
Topic: DFS - Get sector for a file
Replies: 14
Views: 2319

Re: DFS - Get sector for a file

Out of interest, I presume the DFS at some point loads the first two catalog sectors anyway when loading a file so that it can do what I'm trying to do. I wonder if these are stashed in memory somewhere? Maybe between &E00 and &1900?
by simonm
Thu Nov 17, 2016 12:21 am
Forum: 8-bit acorn software: other
Topic: DFS - Get sector for a file
Replies: 14
Views: 2319

Re: DFS - Get sector for a file

Not with any filing system I know of Thanks, good to have that confirmed then. If necessary I'll probably just fetch the first two sectors to get the catalog and hand crank it. OSGBPB is very close to as fast as *LOAD, and is much faster than multiple BGETs. That's what I hoped for. OSGBPB on DFS 0...
by simonm
Wed Nov 16, 2016 10:36 pm
Forum: 8-bit acorn software: other
Topic: DFS - Get sector for a file
Replies: 14
Views: 2319

DFS - Get sector for a file

Is there some easy way to get the sector info for a given filename? I cant seem to find anything with osfile, osword or osargs. OSFILE 5 only seems to provide load/exec/length info. Surely I dont have to read in the catalog and do this work myself?! My aim is to load a file sector by sector for spee...
by simonm
Wed Nov 16, 2016 8:19 pm
Forum: 8-bit acorn hardware
Topic: Palettemate / enhanced video ULA with 4096 colours
Replies: 597
Views: 82232

Re: Palettemate / enhanced video ULA with 4096 colours

Holy moly this is amazing!!! :)
by simonm
Wed Nov 16, 2016 8:17 pm
Forum: 8-bit acorn emulators
Topic: Beeb-Em directory to stay where I left it?
Replies: 7
Views: 1092

Re: Beeb-Em directory to stay where I left it?

There's a save preferences menu somewhere which should sort you out I think.
by simonm
Wed Nov 16, 2016 2:15 pm
Forum: 8-bit acorn software: other
Topic: Sideways RAM bank selection code
Replies: 7
Views: 1578

Re: Sideways RAM bank selection code

That's the sideways bank selection address for the Acorn Electron. The code is multi-platform. Ah gotcha. If you're going to do that you must use the binary version number at &8008, not any other location. Imagine what happens if you write to &8000 and before you can manage to restore it a reset ha...
by simonm
Tue Nov 15, 2016 10:07 pm
Forum: 8-bit acorn software: other
Topic: Sideways RAM bank selection code
Replies: 7
Views: 1578

Re: Sideways RAM bank selection code

Thanks all, I rewrote my loading code to use mem copy and all was well. Seems that OSFILE was indeed the problem, which makes sense, but I'd have expected a much more corrupted data upload to SWR if that was getting paged in during the write. It 'appears' OSFILE would successfully load data to the S...
by simonm
Tue Nov 15, 2016 7:41 pm
Forum: 8-bit acorn software: other
Topic: Sideways RAM bank selection code
Replies: 7
Views: 1578

Sideways RAM bank selection code

Question for you Beeb Gurus. Quite possibly a bug in my code, but are there any gotchas when selecting a SWR bank? My code correctly detects the presence of 4 SWR banks (slots 4,5,6,7) on a Master 128 by cycling through 16 values, selecting bank by poking the bank number to &FE30, then checking if a...
by simonm
Sat Nov 12, 2016 12:41 pm
Forum: 8-bit acorn software: other
Topic: Shadow RAM double buffering questions
Replies: 8
Views: 1741

Re: Shadow RAM double buffering questions

Awesome, thanks all. What platform are you working on? B+ ? Master? Solidisk? Other? Master This just changes what is mapped to main memory so can be accessed at usual address range. It doesn't change what is sent to the video hardware. I presumed the 6845 is fetching from the same memory range, but...
by simonm
Sat Nov 12, 2016 1:11 am
Forum: 8-bit acorn software: other
Topic: Shadow RAM double buffering questions
Replies: 8
Views: 1741

Shadow RAM double buffering questions

Does enabling Shadow RAM switch the entire 20K from &3000 - &8000 ? If so, let's suppose we are using MODE5 and want to have a double buffered screen setup such that we alternate between shadow & system ram each frame, I'm guessing any code or data that is loaded upto &5800 has to be cloned into the...
by simonm
Mon Nov 07, 2016 9:13 pm
Forum: new ideas wishlist & general chat
Topic: Super Mario on the BBC?
Replies: 111
Views: 16223

Re: Super Mario on the BBC?

Really enjoying this thread - nice work guys!
Well, I'm not promising the rest of the game to go with it
I think he will, 118 ;)
by simonm
Sun Oct 30, 2016 10:20 pm
Forum: 8-bit acorn software: other
Topic: CPC Pinball game
Replies: 7
Views: 1760

Re: CPC Pinball game

I guess that this is using the 6845 vertical rupture technique so there's no reason it couldn't be done on a Beeb. Of course, I forgot the CPC had a 6845 also. Given we're spoiled with Emulators these days, I tend to think it's fair enough when new demos or games only work on the expanded models, s...

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