Search found 439 matches

by JasonStonier
Thu Sep 17, 2020 11:35 am
Forum: 8-bit acorn hardware
Topic: Adapting joysticks for the BBC micro
Replies: 30
Views: 4494

Re: Adapting joysticks for the BBC micro

BitSeeker wrote:
Tue Oct 23, 2018 2:38 pm
It has been a while but I have finally managed to sort out a joystick interface!
Would you be up for releasing the Gerbers for this? I'm about to put in an order for something else with JLCPCB and would love to make some of these boards up.

Thanks!
by JasonStonier
Thu Sep 17, 2020 11:24 am
Forum: 8-bit acorn hardware
Topic: [SOLVED] Elementary question about the audio amp on a BBC B
Replies: 2
Views: 210

Re: Elementary question about the audio amp on a BBC B

Perfect, thanks for the help. Confirmed it's an LM386N.
by JasonStonier
Thu Sep 17, 2020 9:16 am
Forum: for sale / freebies
Topic: BBC-FDC floppy controller for Raspberry Pi - New Batch In
Replies: 123
Views: 7123

Re: BBC-FDC floppy controller for Raspberry Pi

When I made my own BBCFDC board, ended up with some spares, and contacted Picosonic to see if he had anyone waiting for boards, I never imagine it would snowball like this. I genuinely feel Picononic has made a huge contribution to the community with his elegant hardware and software design.
by JasonStonier
Thu Sep 17, 2020 9:06 am
Forum: 8-bit acorn hardware
Topic: [SOLVED] Elementary question about the audio amp on a BBC B
Replies: 2
Views: 210

[SOLVED] Elementary question about the audio amp on a BBC B

So, the Beeb has an onboard mono audio amp, and the speaker in mine is 8Ω. Does anyone happen to know if the amp can safely drive a 4Ω speaker? Reason for asking is I have two nice little 8Ω speakers I want to use in a case mod, and I can either wire them in parallel for 4Ω or series for 16Ω. I thin...
by JasonStonier
Wed Sep 16, 2020 3:20 pm
Forum: for sale / freebies
Topic: BBC-FDC floppy controller for Raspberry Pi - New Batch In
Replies: 123
Views: 7123

Re: BBC-FDC floppy controller for Raspberry Pi

For anyone receiving their board - if you're eagle-eyed, you'll see that capacitor C3 is missing. This is intentional as C3 is redundant and added to the component count and potential failure points - being so close to the Pi header it was easy to damage it while mounting the board.
by JasonStonier
Wed Sep 16, 2020 3:15 pm
Forum: for sale / freebies
Topic: BBC-FDC floppy controller for Raspberry Pi - New Batch In
Replies: 123
Views: 7123

Re: BBC-FDC floppy controller for Raspberry Pi

.rfi is Picosonic's proprietary format for his own use and testing, so I'm not surprised nothing else will read it. The other two formats .fds and .scp I believe are a work in progress- Picosonic put some stuff on his github about this recently - https://github.com/picosonic/bbc-fdc I've only ever u...
by JasonStonier
Wed Sep 16, 2020 11:08 am
Forum: wanted
Topic: Wanted: BBC Model B Case (Lower, Maybe Also Upper)
Replies: 7
Views: 697

Re: Wanted: BBC Model B Case (Lower, Maybe Also Upper)

Yeah, I'll share some pics when I'm a bit closer. Basically I'm replicating the "viglen" idea of separating the keyboard from the mainboard of a beeb. I've got the keyboard packaged up and separated with a dismountable connection to the mainboard (a re-purposed parallel cable) and it works...
by JasonStonier
Wed Sep 16, 2020 10:57 am
Forum: wanted
Topic: (Found) Wanted - EdWord ROM
Replies: 5
Views: 337

Re: Wanted - EdWord ROM

Arcadian wrote:
Wed Sep 16, 2020 12:37 am
Can you work out what the C (and also the E) stand for now ... boyo? ;)
Why do the Cymr-ans get a version 2.02, while we backwards English speakers languish in the stone age with v2.00?

It's clear evidence of racism in my opinion :wink:

Thanks for the rom links, Martin.
by JasonStonier
Tue Sep 15, 2020 9:24 pm
Forum: 8-bit acorn hardware
Topic: [SOLVED] ROM banks - problems and priorities
Replies: 11
Views: 431

Re: ROM banks - problems and priorities

Thanks - interestingly Wordsworth doesn’t have a command option as far as I can see - so if it’s in a priority bank, once you’re in, you’re in. Also, on the ‘trampling on memory’ - I found a consistent test case: Blagger. This always inhibits the TurboSPI ROM, and ctrl-break to exit doesn’t fix it. ...
by JasonStonier
Tue Sep 15, 2020 9:17 pm
Forum: wanted
Topic: (Found) Wanted - EdWord ROM
Replies: 5
Views: 337

(Found) Wanted - EdWord ROM

Anyone got a spare, or a dump of EdWord I can burn to an eprom? Thanks.
by JasonStonier
Tue Sep 15, 2020 7:36 pm
Forum: wanted
Topic: Wanted: BBC Model B Case (Lower, Maybe Also Upper)
Replies: 7
Views: 697

Re: Wanted: BBC Model B Case (Lower, Maybe Also Upper)

It’s yours. Give me a few days to finish my case and I’ll pack it up. Probably get it off to you this weekend.
by JasonStonier
Tue Sep 15, 2020 5:12 pm
Forum: wanted
Topic: Wanted: BBC Model B Case (Lower, Maybe Also Upper)
Replies: 7
Views: 697

Re: Wanted: BBC Model B Case (Lower, Maybe Also Upper)

I've got a beeb case you can have for the cost of the postage - I'm in the process of re-housing mine in a custom walnut case (because, apparently, I'm a "geek" (Mrs Stonier) or "such a dork" (Elder of the two Minor Stoniers)). Only problem with the top case is that at some point...
by JasonStonier
Tue Sep 15, 2020 4:54 pm
Forum: general
Topic: Archiving and Whisky
Replies: 1
Views: 285

Re: Archiving and Whisky

Some of my best ideas have arrived while on the third glass of Balvenie Double Wood.
by JasonStonier
Tue Sep 15, 2020 1:47 pm
Forum: 8-bit acorn hardware
Topic: RetroClinic DataCentre remake
Replies: 15
Views: 658

Re: RetroClinic DataCentre.

The circuit isn't designed to feed the CPLD 3.3V (just the Vinculum IC). As such, I think it's a bit more work than just getting the boards produced to make new ones. It would need some level of redesign which, given the ubiquity of cheap goteks, probably isn't worth it. That's an easy problem to s...
by JasonStonier
Tue Sep 15, 2020 1:44 pm
Forum: 8-bit acorn hardware
Topic: RetroClinic DataCentre remake
Replies: 15
Views: 658

Re: RetroClinic DataCentre.

Stwert wrote:
Tue Sep 15, 2020 11:40 am
I’m autistic, I can’t help it :lol:
Safety in numbers, mate. 8)
by JasonStonier
Tue Sep 15, 2020 1:42 pm
Forum: 8-bit acorn hardware
Topic: RetroClinic DataCentre remake
Replies: 15
Views: 658

Re: RetroClinic DataCentre remake

I have a super cheap supplier of PCBs if that's of interest. I was thinking of emailing Mark to see if he'd open-source the DataCentre so it's great to find he already has. I'll probably order a board for myself, so I can easily order 10 boards - will be about the same price as 1 board :D
by JasonStonier
Tue Sep 15, 2020 11:07 am
Forum: 8-bit acorn hardware
Topic: [SOLVED] ROM banks - problems and priorities
Replies: 11
Views: 431

Re: ROM banks - problems and priorities

Cool, thanks for the information.

Is there a reason that BASIC is normally installed in the lowest priority bank as standard? I'd have thought for most use-cases BITD it would be the highest priority.
by JasonStonier
Tue Sep 15, 2020 10:42 am
Forum: 8-bit acorn hardware
Topic: [SOLVED] ROM banks - problems and priorities
Replies: 11
Views: 431

[SOLVED] ROM banks - problems and priorities

A question that comes from not <fully> understanding how the paged ROMs work in a Beeb model B. I've got (in order) OS1.2 Basic 2 TurboSPI Wordworth Blank socket Now to the questions and problems: TurboSPI works really well - very happy with it. The problem is that occasionally when quitting a game ...
by JasonStonier
Tue Sep 15, 2020 9:09 am
Forum: general
Topic: Shout out to Batronix customer support
Replies: 1
Views: 218

Shout out to Batronix customer support

If anyone is in the market for an E(E)PROM burner, I can highly recommend Batronix. I bought a very early Batronix burner kit in about 2002, which I never built up: it sat in the loft for 18 years until last week when I needed to read an eprom. I built up the kit, found an old laptop with a parallel...
by JasonStonier
Mon Sep 14, 2020 4:39 pm
Forum: 8-bit acorn hardware
Topic: EEPROMs 16k / 32k
Replies: 5
Views: 378

Re: EEPROMs 16k / 32k

So, I just found a really easy way to erase EPROMs. Apparently, if you put an EPROM in your EPROM burner the wrong way round, a cool orange light shines out of the erase window and the EPROM immediately wipes. I've found that it's hard to reprogram afterwards, but hey... =D> (Don't do this, by the w...
by JasonStonier
Mon Sep 14, 2020 1:01 pm
Forum: 8-bit acorn hardware
Topic: EEPROMs 16k / 32k
Replies: 5
Views: 378

Re: EEPROMs 16k / 32k

Cool thanks. Perfect.

I'd actually already looked at the BooBip RAM/ROM expansion hat, and your explanation really helped understand how it works.
by JasonStonier
Mon Sep 14, 2020 11:43 am
Forum: 8-bit acorn hardware
Topic: EEPROMs 16k / 32k
Replies: 5
Views: 378

Re: EEPROMs 16k / 32k

Mark - thanks. Great information. For as much as I'm ever going to do, I'm going to stick with EPROMs and take the hit on having a UV eraser around. Both are cheap enough and I have an EPROM programmer lying around that I don't <think> will erase EEPROMs. I think I'll try a quick and dirty mod using...
by JasonStonier
Mon Sep 14, 2020 10:54 am
Forum: 8-bit acorn hardware
Topic: EEPROMs 16k / 32k
Replies: 5
Views: 378

EEPROMs 16k / 32k

On a BBC Model B, the standard ROMs are 16kb I believe (27128) - would I be right in assuming that programming a 16k ROM into the bottom half of a 27256 chip would just work? And if you program two 16k ROMs contiguously into a 27256 chip, would that "just work", or is some address modifica...
by JasonStonier
Thu Sep 10, 2020 3:26 pm
Forum: for sale / freebies
Topic: WordWise ROM
Replies: 4
Views: 665

Re: WordWise ROM

Awesome. Sorted by PM.

This is all part of trying to recreate my childhood Beeb - had Wordwise BITD and used it for all my homework right up to A-Levels. :D
by JasonStonier
Thu Sep 10, 2020 2:36 pm
Forum: for sale / freebies
Topic: WordWise ROM
Replies: 4
Views: 665

Re: WordWise ROM

Long, long time ago, but did anyone take this?
by JasonStonier
Thu Sep 10, 2020 11:54 am
Forum: 8-bit acorn hardware
Topic: Recommended BBC Model B upgrades
Replies: 50
Views: 1888

Re: Recommended BBC Model B upgrades

Does anyone have any advice on refurbing a keyboard - it all works fine, but the keys are harder to press and a bit stickier than I remember from BITD. Is it just a question of popping off every keycap and cleaning the contacts and springs? If so, any recommended cleaner, or just generic spray conta...
by JasonStonier
Thu Sep 10, 2020 11:51 am
Forum: 8-bit acorn hardware
Topic: Recommended BBC Model B upgrades
Replies: 50
Views: 1888

Re: Recommended BBC Model B upgrades

I'm going to buy a SWR/EPROM board from you...when the current flurry of spending has been forgotten by the boss.
by JasonStonier
Thu Sep 10, 2020 9:25 am
Forum: 8-bit acorn hardware
Topic: Recommended BBC Model B upgrades
Replies: 50
Views: 1888

Re: Recommended BBC Model B upgrades

First of the modifications done, and I have a Beeb that starts up properly. Rather than re-capping the power supply, I bought a new one from RS - Meanwell RPT-60A is pin compatible with the Beeb, has the same footprint as a credit card, and delivers up to 60W so it's a great replacement for £12. I'v...
by JasonStonier
Thu Sep 10, 2020 9:18 am
Forum: 8-bit acorn hardware
Topic: Recommended BBC Model B upgrades
Replies: 50
Views: 1888

Re: Recommended BBC Model B upgrades

You don't need Windows if you're using and MMB file and MMFS - there's a nice set of command line tools and now there's a GUI tool too. MMBExplorer released! MMB/SSD Utils in perl Thanks. Those solutions look like real game changers 8) . I was thinking exactly the same thing myself. I find PCs are ...
by JasonStonier
Wed Sep 09, 2020 11:24 pm
Forum: 8-bit acorn hardware
Topic: Will any 5.25" floppy drive work with Greaseweazle?
Replies: 11
Views: 521

Re: Will any 5.25" floppy drive work with Greaseweazle?

danielj wrote:
Wed Sep 09, 2020 4:17 pm
Jason- if you check the Facebook Greaseweazle group you'll see that Keir's doing a number of different kits at very reasonable prices!

d.
Yeah, but where’s the fun in that??? 😀

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