Search found 159 matches

by scruss
Mon Jul 08, 2019 1:41 am
Forum: software & utilities for the pc, mac or unix
Topic: Matrix Brandy BASIC VI for Linux with SDL: V1.22.3 released
Replies: 862
Views: 52623

Re: Matrix Brandy BASIC V for Linux with SDL: V1.21.12 released

Soruk wrote:
Fri Sep 07, 2018 5:41 pm
New feature added: *ScreenSave <filename.bmp> - saves the screen as a Windows BMP file.
Hey - bit of a BBC BASIC thicko here. How do you pass a string variable value to *ScreenSave, please? It seems to only take a static string
by scruss
Sun Jul 07, 2019 1:34 pm
Forum: emulators
Topic: Is Horizon a dirty word hereabouts?
Replies: 7
Views: 963

Re: Is Horizon a dirty word hereabouts?

richmond62 wrote:
Tue May 14, 2019 1:26 pm
… I use a BBC emulator to teach BBC BASIC on computers running Xubuntu Linux
May I suggest either Matrix Brandy BASIC or BBC BASIC for SDL 2.0 rather than an emulator? Both run natively under 64-bit Linux.
by scruss
Sun Jul 07, 2019 1:28 pm
Forum: other vintage computer hardware, software and games
Topic: "Plotpourri" graphics demos in Basic for Apple II
Replies: 18
Views: 1805

Re: "Plotpourri" graphics demos in Basic for Apple II

No problem. It was good learning BBC BASIC again — though those VDU commands must've made sense to someone at the time! Matrix Brandy BASIC has really good compatibility with the original, and is much faster for me to develop on. The code pasted into b-em and ran first time. The only real change I h...
by scruss
Sun Jul 07, 2019 2:36 am
Forum: other vintage computer hardware, software and games
Topic: "Plotpourri" graphics demos in Basic for Apple II
Replies: 18
Views: 1805

Re: "Plotpourri" graphics demos in Basic for Apple II

ppourri1.png This isn't an exact port, but it's close. 1000 REM ****************** 1010 REM * * 1020 REM * PLOTPOURRI * 1030 REM * S COTTRELL * 1040 REM * SEPT 1979 * 1050 REM * * 1060 REM ****************** 1070 REM Washington Apple Pi Journal October 1979 1080 REM bbc basic / matrix brandy port -...
by scruss
Fri Jun 28, 2019 1:39 am
Forum: other vintage computer hardware, software and games
Topic: "Plotpourri" graphics demos in Basic for Apple II
Replies: 18
Views: 1805

Re: "Plotpourri" graphics demos in Basic for Apple II

If anyone wishes to port it, the Apple II's 280 × 192 screen has the origin at the top left of the screen.The way the programme does hidden pixel removal is quite simple:
  • plot a point at (X, Y) in colour PC
  • draw a vertical line from (X, Y-1) down to (X, 0) in colour BC
by scruss
Fri Jun 28, 2019 1:02 am
Forum: introduce yourself
Topic: Greetings from Scotland
Replies: 18
Views: 1273

Re: Greetings from Scotland

When at uni in the late 1980s I went to a monthly Beeb meeting in a Scout Hut in Falkirk. Every now and then I look at a map and try and remember where it was - it was about 20min walk from the railway station... but I can't remember which station! :( 40th Falkirk on Bellsmeddow Road is a 20 minute...
by scruss
Thu Jun 27, 2019 1:53 am
Forum: introduce yourself
Topic: Hello from Canada
Replies: 12
Views: 911

Re: Hello from Canada

Ritchie wrote:
Wed Jun 26, 2019 3:10 pm
Greetings from Canada!
Hello from Toronto!
by scruss
Tue Jun 25, 2019 8:50 pm
Forum: other vintage computer hardware, software and games
Topic: "Plotpourri" graphics demos in Basic for Apple II
Replies: 18
Views: 1805

Re: "Plotpourri" graphics demos in Basic for Apple II

No probs: with IA's Apple II support, it's as easy to make an auto-run image as anything else. I'm sure it wouldn't take much prodding to get them to add Beeb-in-a-browser support. I did all this with an emulator ( dabonetn/linapple-pie ) and the AppleCommander disk image tool. AppleCommander has re...
by scruss
Tue Jun 25, 2019 8:27 pm
Forum: other vintage computer hardware, software and games
Topic: "Plotpourri" graphics demos in Basic for Apple II
Replies: 18
Views: 1805

Re: "Plotpourri" graphics demos in Basic for Apple II

plotpourri_gallery.png So I got it all typed in and corrected, in which I discovered a lot more about Applesoft BASIC and the foibles of the II's HGR2 mode than I wanted to. Here's the source, again with Applesoft's slightly unusual spacing applied: 1 REM ****************** 2 REM * * 3 REM * PLOTPO...
by scruss
Mon Jun 24, 2019 12:30 pm
Forum: software & utilities for the pc, mac or unix
Topic: Github problems: can anybody help?
Replies: 32
Views: 1266

Re: Github problems: can anybody help?

… it sounds as though I was badly advised and should be considering deleting my Github account. Yes, there are a couple of bits missing from git that don't seem to fit your development model: github always has the master copy. git lacks safe options such as preview/dry run on all its tools. There's...
by scruss
Sat Jun 22, 2019 8:34 pm
Forum: other vintage computer hardware, software and games
Topic: "Plotpourri" graphics demos in Basic for Apple II
Replies: 18
Views: 1805

Re: "Plotpourri" graphics demos in Basic for Apple II

Doesn't exactly produce the most edifying output (at least in MODE 1 on Brandy):
Screenshot from 2019-06-22 16-26-01.png
Brandy BASIC output
Screenshot from 2019-06-22 16-26-01.png (953 Bytes) Viewed 1699 times
by scruss
Sat Jun 22, 2019 4:58 pm
Forum: other vintage computer hardware, software and games
Topic: "Plotpourri" graphics demos in Basic for Apple II
Replies: 18
Views: 1805

Re: "Plotpourri" graphics demos in Basic for Apple II

Here's the business end of the code. OCR with manual correction, been passed through an Apple II emulator to see if it parses, but not run: 120 X1 = -2:X2 = 3:Y1 = -3:Y2 = 5.7:ZS = 80:RZ = 1:PC = 6:BC = 0 125 DEF FN Z(X) = SIN(X *Y) * EXP( -(X *X +Y *Y)/9) +0.2 128 GOSUB 130 129 END : REM WAS GOTO 3...
by scruss
Sat Jun 22, 2019 2:56 pm
Forum: other vintage computer hardware, software and games
Topic: "Plotpourri" graphics demos in Basic for Apple II
Replies: 18
Views: 1805

Re: "Plotpourri" graphics demos in Basic for Apple II

It's more of a demo of the Apple II's hard-to-use HGR screen mode. It could kinda-sorta display six colours at 280 × 192: not all colours could appear adjacent to one another. MODE 1 would do nicely to replace it. Lines 200-330 of the code do the clever bit. There doesn't seem to be the program code...
by scruss
Sat Jun 22, 2019 1:53 pm
Forum: other vintage computer hardware, software and games
Topic: Tandy CoCo 1 Please help....
Replies: 4
Views: 585

Re: Tandy CoCo 1 Please help....

He's not exactly local, but user waltermixxx is a CoCo nerd through and through.
RAM chip issues look a likely first try. After that, call in the experts.
by scruss
Sun May 19, 2019 2:39 pm
Forum: other vintage computer hardware, software and games
Topic: 50 years of AMD
Replies: 11
Views: 860

Re: 50 years of AMD

Well, of course Intel were mainly a memory chip manufacturer. Later they produced some MPUs and MPU peripheral interface chips. It was only a lot later that they became a major MPU/CPU suppler. That would be roughly at the same time that the IBM PC came out. IBM wanted a processor supplier they cou...
by scruss
Sat May 11, 2019 2:09 pm
Forum: off-topic
Topic: What has happened to Firefox add-ons?
Replies: 37
Views: 1971

Re: What has happened to Firefox add-ons?

BeebMaster wrote:
Sat May 11, 2019 9:58 am
… It sounds like they are going back to version 52 with a patch, which will suit me when they get round to it.
Well, if that works for you …
I wouldn't be without v57+'s multi-core support. Instead of just using one core, it can render using all of them.
by scruss
Thu May 09, 2019 2:26 pm
Forum: off-topic
Topic: What has happened to Firefox add-ons?
Replies: 37
Views: 1971

Re: What has happened to Firefox add-ons?

one more thing:
BeebMaster wrote:
Sun May 05, 2019 1:12 pm
… is why can't they just FIX the certificate so that the add-ons come back …?
The whole point of certificates is that you can't fix them. Once they're expired it must be utterly impossible to reactivate them, otherwise they become a great way of gaining fraudulent access.
by scruss
Thu May 09, 2019 12:59 am
Forum: off-topic
Topic: What has happened to Firefox add-ons?
Replies: 37
Views: 1971

Re: What has happened to Firefox add-ons?

What else can I do?? They're working on a patch for the legacy versions (like 56), but obviously it's not a priority. Mike Hoye (a Mozilla engineer I know) makes some appearances in this MeFi thread - https://www.metafilter.com/180725/A-Glitch-Is-Breaking-All-Firefox-Extensions#7695301 - explaining...
by scruss
Mon May 06, 2019 4:52 pm
Forum: general
Topic: DRAGON USER gripes about the Computer Literacy Programme.....
Replies: 52
Views: 2463

Re: DRAGON USER gripes about the Computer Literacy Programme.....

It appears that a Spanish electronics place persuaded their government to go all Trump and impose import tariffs on foreign equipment, … I still remember the UK tariff on imported disk drives and floppies. A box of 10 floppies was £50 back in the day. I just remember swingeing limits on the amount ...
by scruss
Mon May 06, 2019 4:44 pm
Forum: off-topic
Topic: E-mail Delivery Status Notifications
Replies: 4
Views: 375

Re: E-mail Delivery Status Notifications

DSN is a boon to spammers, so modern services turn it off. I think MS mail services might have it as an opt-in.
It's not very useful as a verification tool these days.
by scruss
Mon May 06, 2019 2:08 pm
Forum: general
Topic: DRAGON USER gripes about the Computer Literacy Programme.....
Replies: 52
Views: 2463

Re: DRAGON USER gripes about the Computer Literacy Programme.....

Of course, the Dragon limped on for a few more years in Spain, while Sinclair had a go with a Spanish machine and the Amstrad CPC ended up king of the hill there. Spain was quite special. There was an import duty on computers with 64 K or less (fewer, if you prefer), so the Spanish government bunge...
by scruss
Mon May 06, 2019 1:40 pm
Forum: programming
Topic: The BASIC Word-wrap Challenge! (BBC BASIC)
Replies: 11
Views: 882

Re: The BASIC Word-wrap Challenge! (BBC BASIC)

What this code can't cope with though is a word which is too long for the width of the screen. I might have a go at fixing that, but obviously for my purposes, an adventure program, I am in control of all the text so I won't ever have a word which is longer than the screen width. It's not set in Ll...
by scruss
Sun May 05, 2019 1:15 am
Forum: software
Topic: RISC OS relicensed: now under Apache 2.0!
Replies: 91
Views: 5489

Re: RISC OS relicensed: now under Apache 2.0!

They're kind of rare and expensive here. I can get 2+ Raspberry Pi 3B+s for the price of of one Homeplug kit. I have wireless for free, and the Zero W has no ethernet port. So yeah, wireless is needed badly. They also very likely wouldn't work in my house, as where most of the computers live upstair...
by scruss
Sun May 05, 2019 1:07 am
Forum: general
Topic: DRAGON USER gripes about the Computer Literacy Programme.....
Replies: 52
Views: 2463

Re: DRAGON USER gripes about the Computer Literacy Programme.....

There were a few Dragon users at my school. All of them went on to become Amstrad CPC users. One of the Dragon users, Alan Cook, wrote quite a few successful text adventures for the Dragon. I had a Dragon 64, briefly, but didn't do much with it. The display looked terrible in the UK as it was pretty...
by scruss
Sat May 04, 2019 5:59 pm
Forum: software: other
Topic: Whitehall game (BBC BASIC)
Replies: 5
Views: 623

Re: Whitehall game (BBC BASIC)

Type-ins got ripped off all the time. While there was more demand for magazines than there was pay for rigorous editors, it was hard to stop. Simon Goodwins' UK government simulator* wasn't the first type-in of this kind. I remember playing one on the PET that started off asking ‘[M]ONETARIST or [K]...
by scruss
Sat May 04, 2019 4:15 pm
Forum: software
Topic: RISC OS relicensed: now under Apache 2.0!
Replies: 91
Views: 5489

Re: RISC OS relicensed: now under Apache 2.0!

Yeah, lack of wifi is a major blocker for me. I'm not quite sure where my nearest network outlet is — somewhere far away and spidery in the basement.
by scruss
Wed Apr 03, 2019 3:25 pm
Forum: software: other
Topic: Acorn User Article: Arabic Mosaics
Replies: 7
Views: 573

Re: Acorn User Article: Arabic Mosaics

Somewhere I've got ancient Fortran code that creates an interactive version of that BASIC tiling code: take a polygon, deform a side and it makes the necessary changes to the opposite side so they'll tessellate. I think it needs a Tek graphics terminal, so we'd also need to go back in time 30+ year...
by scruss
Wed Apr 03, 2019 1:22 am
Forum: software: other
Topic: Acorn User Article: Arabic Mosaics
Replies: 7
Views: 573

Re: Acorn User Article: Arabic Mosaics

Haven't looked for the article, but I wonder if it was by Brian Wichmann? Brian - a leading light in UK early software development - used to use Acorn computers and seems to have written for Acorn magazines too. He wrote much of his book The World of Patterns on an Arch, and now runs tilingsearch . ...
by scruss
Tue Mar 12, 2019 12:16 am
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1160
Views: 129142

Re: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)

It has been on my list to re organise the ram to enable larger memory , but with no actual requirement till now it has been at the bottom of my todo list. Any thoughts on how to deal with the 256MB vs 512MB possible RAM on the Pi One? TBH, the 256 MB ones are so rare (and almost all use the old 26-...
by scruss
Tue Mar 05, 2019 4:55 pm
Forum: general
Topic: Aldi - 3D Printer £250
Replies: 12
Views: 954

Re: Aldi - 3D Printer £250

it's going to be the same for the Balco as any other commodity printer: they all use similar hot ends, nozzle size and drive gear. Far more variability is in the material choice and appropriate settings. The Balco is direct extrusion while others in its price range aren't. This has both advantages a...