Search found 1549 matches

by BigEd
Wed Nov 08, 2017 11:07 pm
Forum: off-topic
Topic: retro-kit.co.uk has gone SSL
Replies: 8
Views: 408

Re: retro-kit.co.uk has gone SSL

...and all the other browsers... It's not just Chrome! It's a bit of extra work for people who run forums and websites, but I think it's a good idea. We, the people, want to be able to trust that our device is reaching the website we intend to reach, always, and that the data we exchange arrives in...
by BigEd
Mon Nov 06, 2017 9:23 pm
Forum: hardware
Topic: Unix on the Beeb
Replies: 36
Views: 1326

Re: Unix on the Beeb

That's great!
by BigEd
Mon Nov 06, 2017 6:46 pm
Forum: hardware
Topic: Unix on the Beeb
Replies: 36
Views: 1326

Re: Unix on the Beeb

JGH's PDP-11 Basic runs in Unix? I am surprised! Or did you have to do some kind of port? Or am I confused?
by BigEd
Sun Nov 05, 2017 12:23 pm
Forum: software: other
Topic: Any scan of the Torch Software Catalogue?
Replies: 2
Views: 136

Re: Any scan of the Torch Software Catalogue?

Oh, thanks - it was right next to the others!
by BigEd
Sun Nov 05, 2017 11:38 am
Forum: software: other
Topic: Any scan of the Torch Software Catalogue?
Replies: 2
Views: 136

Any scan of the Torch Software Catalogue?

I see Torch offered a Unix-capable 68000 (and Z80) machine ( Torch Unicorn Technical Overview ), and recommended Unix users should program in C, although it seems they offered a wide range of languages: TORCH would recommend ProPascal, Aztec C or BBCBASIC (Z80) for software development on Z80 system...
by BigEd
Sat Nov 04, 2017 12:31 pm
Forum: off-topic
Topic: Alternate Universe Micros...
Replies: 17
Views: 827

Re: Alternate Universe Micros...

The stories of how things actually happened can be quite interesting too: JImmy Maher's excellent series recently covered the genesis of Compuserve, on the one hand, and The Source, on the other.
http://www.filfre.net/2017/10/a-net-bef ... ent-rogue/
by BigEd
Fri Nov 03, 2017 11:53 am
Forum: general
Topic: Computer Shops From Back In The Day
Replies: 65
Views: 5907

Re: Computer Shops From Back In The Day

I thought it was called Merry Hell...
by BigEd
Fri Nov 03, 2017 7:10 am
Forum: acorn atom
Topic: Atom Magazine Reviews
Replies: 52
Views: 3114

Re: Atom Magazine Reviews

(Here's the Nosher article for that image)
by BigEd
Thu Nov 02, 2017 10:56 pm
Forum: software & utilities for the pc, mac or unix
Topic: BBC BASIC for SDL 2.0 v0.19a released
Replies: 16
Views: 545

Re: BBC BASIC for SDL 2.0 v0.19a released

ouch! That's a serious performance regression, on the face of it.
by BigEd
Wed Nov 01, 2017 7:42 pm
Forum: software & utilities for the pc, mac or unix
Topic: BBC BASIC for SDL 2.0 v0.19a released
Replies: 16
Views: 545

Re: BBC BASIC for SDL 2.0 v0.19a released

Sounds good! BBC Basic is a good fit for the Pi, I think.
by BigEd
Tue Oct 31, 2017 8:52 pm
Forum: bbcmicro.co.uk
Topic: Uridium ssd file not found
Replies: 21
Views: 749

Re: Uridium ssd file not found

Thanks!
by BigEd
Tue Oct 31, 2017 8:44 pm
Forum: general
Topic: Remarkable videos recently posted on Youtube
Replies: 134
Views: 11945

Re: Remarkable videos recently posted on Youtube

From 1985, Thames TV's Database program, showing off a Beeb running some extreme accessibility software (eye movement input device, £300), here https://youtu.be/16NwJwAmbcs?t=1m41s and another Beeb hooked up to a £300 RH Electronics Image Processing System https://youtu.be/16NwJwAmbcs?t=15m50s which...
by BigEd
Tue Oct 31, 2017 4:07 pm
Forum: bbcmicro.co.uk
Topic: Uridium ssd file not found
Replies: 21
Views: 749

Re: Uridium ssd file not found

Sounds good.

Fair point about the version - I just checked, and the official version of jsbeeb does the same thing, as does the latest source on the master branch.
by BigEd
Tue Oct 31, 2017 1:48 pm
Forum: bbcmicro.co.uk
Topic: Uridium ssd file not found
Replies: 21
Views: 749

Re: Uridium ssd file not found

Is there a way to annotate the link rather than disable it? Could be useful for someone aiming to debug the problem.
by BigEd
Tue Oct 31, 2017 8:57 am
Forum: bbcmicro.co.uk
Topic: Uridium ssd file not found
Replies: 21
Views: 749

Re: Uridium ssd file not found

ah, good - well, kind of good - thanks - I've opened an issue
https://github.com/mattgodbolt/jsbeeb/issues/152
by BigEd
Tue Oct 31, 2017 6:44 am
Forum: bbcmicro.co.uk
Topic: Uridium ssd file not found
Replies: 21
Views: 749

Re: Uridium ssd file not found

This might be user error, but I fired up Uridium, selected keyboard and some custom keys, and when it eventually started it was just an endless cycle of demo plays. That is, I didn't find a way to start to play.
by BigEd
Mon Oct 30, 2017 9:47 pm
Forum: bbcmicro.co.uk
Topic: Uridium ssd file not found
Replies: 21
Views: 749

Re: Uridium ssd file not found

Thanks for a quick fix!
by BigEd
Mon Oct 30, 2017 5:01 pm
Forum: hardware
Topic: BBC Master IC20 - stupid questions time
Replies: 21
Views: 580

Re: BBC Master IC20 - stupid questions time

crj wrote:
BigEd wrote:I like that. And, why else have a SYNC input?

It has the SYNC input to support ... shadow RAM for loads and stores by the VDU driver code (residing in the OS ROM C000-DFFF) but normal RAM for all other accesses.

Ah, of course!
by BigEd
Mon Oct 30, 2017 3:18 pm
Forum: hardware
Topic: BBC Master IC20 - stupid questions time
Replies: 21
Views: 580

Re: BBC Master IC20 - stupid questions time

I like that. And, why else have a SYNC input?
by BigEd
Mon Oct 30, 2017 12:36 pm
Forum: bbcmicro.co.uk
Topic: Uridium ssd file not found
Replies: 21
Views: 749

Uridium ssd file not found

Uridium fails to load its disk:
http://bbcmicro.co.uk/game.php?id=557
Error: Unable to load http://bbcmicro.co.uk//gameimg/discs/Di ... diumCB.ssd, http code 404
by BigEd
Mon Oct 30, 2017 9:11 am
Forum: hardware
Topic: Open Source Logic Analyzer Experiments
Replies: 103
Views: 4510

Re: Open Source Logic Analyzer Experiments

Featured on Hackaday, Dave - congratulations!

There's a comment there about the cost of a 40 pin DIP test clip - £40 maybe - but I see some for under £20 on ebay. Think they'd be any good?
by BigEd
Mon Oct 30, 2017 6:01 am
Forum: other vintage computer hardware, software and games
Topic: UK101 Hardware Modifications Archive
Replies: 21
Views: 1188

Re: UK101 Hardware Modifications Archive

I haven't measured, but that sounds right to me. The UK101 design is a near-copy of the OSI 600 Superboard design, and the cassette interface is meant to conform to the Kansas City standard - that's 300 baud, and a specific modulation. Although 300 baud is also a standard for serial communication, i...
by BigEd
Sun Oct 29, 2017 6:58 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 473
Views: 27928

Re: Beeb FPGA

(surely Uridium http://bbcmicro.co.uk/game.php?id=557 - which interestingly enough fails for me.)
by BigEd
Sun Oct 29, 2017 1:08 pm
Forum: software: other
Topic: Turbo Cassette
Replies: 38
Views: 2976

Re: Turbo Cassette

Have you tried arranging for a shorter than normal stop bit? It could only gain 5% so perhaps isn't worth it. (If the stop bit is detected half way through the bit time, you can possibly follow it with the start bit transition earlier than you normally would.) I have no idea how you'd arrange to do ...
by BigEd
Sun Oct 29, 2017 10:43 am
Forum: hardware
Topic: New 65C02/W65C816 copro
Replies: 72
Views: 4456

Re: New 65C02/W65C816 copro

by BigEd
Wed Oct 25, 2017 9:25 am
Forum: hardware
Topic: Turbo MMC ROM
Replies: 59
Views: 1846

Re: Turbo MMC ROM

I have measured the voltages on both machines, before and after issuing a *CARD (this command hangs on the issue 4 board, but not on the issue 7 Issue 4 Issue 7 Pin# Before/after *CARD. Before/after *CARD 1&3. 5/5. 5/5 Other odds. 0/0. 0/0 2. 3.6/3.6. 3.4/3.4 6-16 evens. 3.5/3.5. 3.2/3.2 18 &am...
by BigEd
Tue Oct 24, 2017 11:33 am
Forum: general
Topic: Adventures for your BBC micro BOOK on eBay
Replies: 93
Views: 2871

Re: Adventures for your BBC micro BOOK on eBay

I ought really to do a test, but I would think it could be.
by BigEd
Tue Oct 24, 2017 11:10 am
Forum: general
Topic: Adventures for your BBC micro BOOK on eBay
Replies: 93
Views: 2871

Re: Adventures for your BBC micro BOOK on eBay

I think I'd go for the black&white version but save as jpeg instead of tiff. Should come out to about 1 megabyte per scan.
by BigEd
Tue Oct 24, 2017 8:40 am
Forum: general
Topic: Beeb Spotting
Replies: 22
Views: 1966

Re: Beeb Spotting

Not too surprising, but there's a Beeb in this demonstration of about 7 robot arms at Bletchley Park. One of them is the Atlas arm, with a 6502 inside. Mmm.

Image
by BigEd
Mon Oct 23, 2017 8:11 pm
Forum: acorn atom
Topic: Matchbox sized 6502 / Z80 / 6809 Co Pro
Replies: 1203
Views: 87574

Re: Matchbox sized 6502 / Z80 / 6809 Co Pro

Indeed they are, as built. But every expansion added is another element which might push something out of spec. Even then, a lot of things just work. But in both Matchbox and Pi we have seen that we have to be careful, and that individual machines differ, even before you add the various popular expa...

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