Search found 3511 matches

by BeebMaster
Fri Sep 18, 2020 5:06 pm
Forum: 8-bit acorn hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 290MHz)
Replies: 1262
Views: 158691

Re: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 290MHz)

6502 Tube as in "*FX 151,230,0". Actually I think it is a cable length thing, because the problem hadn't gone away even with the Winchester disc on, I still got FFs in RAM I'd just cleared to zero. I've taken away the intermediate 3ft. extension cable, so it's only my short 12" extension cable which...
by BeebMaster
Fri Sep 18, 2020 4:29 pm
Forum: 8-bit acorn hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 290MHz)
Replies: 1262
Views: 158691

Re: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 290MHz)

Here's a weird thing. I was just about to have a go using my "ADFSImager" to try to make a backup of my defect-ridden Rodime Acorn Winchester Disc, so I loaded ADFSImager from floppy with Pi Tube running (Native ARM) and I got "Bad program". Same with the 6502 Tube. I checked, and it loads fine with...
by BeebMaster
Fri Sep 18, 2020 2:55 pm
Forum: 32-bit acorn software: other
Topic: Looking for a BASIC code tidier / uncruncher!
Replies: 4
Views: 167

Re: Looking for a BASIC code tidier / uncruncher!

I had a look at Kfilereplace on Ubuntu, it does have a multiple search & replace function, you can load in a set of strings stored in a text file. I did that a few years ago to all the HTML pages on my website when I was trying to standardise a few things. Somebody would need to generate a list of S...
by BeebMaster
Fri Sep 18, 2020 2:54 pm
Forum: 8-bit acorn hardware
Topic: Master startup beep question
Replies: 5
Views: 72

Re: Master startup beep question

The length of the first beep is also dependent on how many ROMs there are to initialise. Generally there are more in a Master because ROMs 9-15 are part of the MOS ROM, so very often the Master's first beep is longer. Master MOS 3.5 has a shorter first beep, then a slight pause before the VDU 7 blee...
by BeebMaster
Thu Sep 17, 2020 11:17 pm
Forum: 32-bit acorn software: other
Topic: Looking for a BASIC code tidier / uncruncher!
Replies: 4
Views: 167

Re: Looking for a BASIC code tidier / uncruncher!

I don't know if it's ever been done, but in the same way that BASIC crunchers concatenate multiple lines, it should be straightforward enough to search for colons and put a line break in (as long as the colon doesn't succeed an IF or a REM etc), and with ARMBASIC it wouldn't even be necessary to try...
by BeebMaster
Thu Sep 17, 2020 10:55 pm
Forum: 32-bit acorn software: other
Topic: Looking for a BASIC code tidier / uncruncher!
Replies: 4
Views: 167

Re: Looking for a BASIC code tidier / uncruncher!

Mmm...for doing find-and-replace of SWI numbers with their names you could do with a bulk find & replace tool which you could feed a list of search strings and the corresponding replace strings. That sort of thing would be useful in all sorts of ways to save having to do potentially dozens of repeat...
by BeebMaster
Thu Sep 17, 2020 10:41 pm
Forum: archive submissions
Topic: Adaptec ACB4000 Series Control ROMs
Replies: 3
Views: 91

Re: Adaptec ACB4000 Series Control ROMs

I've done the first one, from my Rodime Acorn Winchester Disc 130 with Adaptec ACB-4000.

Not quite as close-up as Sean's pictures, but then, it's a bit easier to dump the ROM!
IMG_7651.JPG
capture282.png
Do you like what I did with the load/exec addresses?
by BeebMaster
Thu Sep 17, 2020 8:37 pm
Forum: 8-bit acorn hardware
Topic: [SOLVED] Connections to chips - e.g. for large eprom boards
Replies: 12
Views: 231

Re: Connections to chips - e.g. for large eprom boards

Station 201 has a piggy back socket associated with one of its ROM boards, I think it's the Vine OS Overlay board. It slips off occasionally, and it doesn't help that they used a 28-pin socket over a 40-pin chip!
Station201-2020-22.jpg
by BeebMaster
Thu Sep 17, 2020 2:24 pm
Forum: 8-bit acorn hardware
Topic: [SOLVED] ROM banks - problems and priorities
Replies: 11
Views: 214

Re: ROM banks - problems and priorities

With Wordwise you should be able to type a * from the main menu which will give you a command prompt.
by BeebMaster
Thu Sep 17, 2020 2:10 pm
Forum: archive submissions
Topic: Adaptec ACB4000 Series Control ROMs
Replies: 3
Views: 91

Re: Adaptec ACB4000 Series Control ROMs

Will do, should have checked there first, I have an offline copy of all that.

Just trying to bring the Rodime back to life, but there's not much hope with 5000 disc errors in the first 7000 sectors....
capture216.png
by BeebMaster
Thu Sep 17, 2020 2:01 pm
Forum: 8-bit acorn hardware
Topic: [SOLVED] ROM banks - problems and priorities
Replies: 11
Views: 214

Re: ROM banks - problems and priorities

It would be unusual for a language ROM not to have a * command to start it, as it would be impossible to use without it being in the highest-priority ROM socket. *FX142,<ROM number> will force that ROM number to be selected as the current language.
by BeebMaster
Thu Sep 17, 2020 1:50 pm
Forum: archive submissions
Topic: Adaptec ACB4000 Series Control ROMs
Replies: 3
Views: 91

Adaptec ACB4000 Series Control ROMs

Have the ROMs out of the Adaptec bridge boards been imaged? I could do them whilst I've got my Winchesters in pieces. I've got ACB4000, ACB4000A and ACB4070 boards, and maybe different ROM versions between them.
by BeebMaster
Thu Sep 17, 2020 11:24 am
Forum: 8-bit acorn hardware
Topic: Following in the footsteps...
Replies: 4
Views: 263

Re: Following in the footsteps...

sweh wrote:
Thu Sep 17, 2020 3:02 am
And then I saw smoke curling out of the body of my precious Beeb. Yoiks! Power off!
I didn't realise at first that you meant following in my footsteps...
by BeebMaster
Thu Sep 17, 2020 11:18 am
Forum: 8-bit acorn software: other
Topic: *DIR ^ on Master with ANFS 4.25
Replies: 5
Views: 196

Re: *DIR ^ on Master with ANFS 4.25

Indeed, it's whether the file server implements "up". Level 2 and 3 file servers didn't have this facility, inexplicably, until the relatively recently discovered version 1.24 of Level 3, which has a link to the parent directory as the first entry in the directory object. Even then, you can can only...
by BeebMaster
Wed Sep 16, 2020 12:26 pm
Forum: for sale / freebies
Topic: SOLD Mertec Companion
Replies: 5
Views: 208

Re: SOLD Mertec Companion

Looks like my Mertec Companion has the same ROM:

Image
by BeebMaster
Tue Sep 15, 2020 2:27 pm
Forum: 8-bit acorn hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 290MHz)
Replies: 1262
Views: 158691

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

You can tell her you will need a spare Pi4 as well, just in case. And it will reduce the unit postage cost, hopefully go down well with Mrs Muddy.
by BeebMaster
Tue Sep 15, 2020 2:25 pm
Forum: programming
Topic: Using a Mac or PC for BBC games authoring
Replies: 44
Views: 1034

Re: Using a Mac or PC for BBC games authoring

I don't know how to work an Apple Mackintosh, I think you have to have the brainpower of Stephen Fry or Douglas Adams to do that, but that error sounds like the filetype extension hasn't been registered with a default application to open it. If that sort of system exists on Apples that is.
by BeebMaster
Tue Sep 15, 2020 11:19 am
Forum: for sale / freebies
Topic: Ribbon Cables
Replies: 12
Views: 420

Re: Ribbon Cables

Well, as a special request for our member named after my favourite 1970s micro-chip, I'm sure I can do it, as long as I know what to cut and where...
by BeebMaster
Tue Sep 15, 2020 11:15 am
Forum: wanted
Topic: Master Space Bar Lugs
Replies: 1
Views: 68

Master Space Bar Lugs

Finally got round to asking...my thumb is now nearly destroyed from trying to make the space bar register without the two little lugs either side holding it up. Anybody got a couple of these for a Master 128? I've got broken Masters, but not broken keyboards, so I didn't want to cannibalise anything...
by BeebMaster
Tue Sep 15, 2020 11:04 am
Forum: 8-bit acorn hardware
Topic: [SOLVED] ROM banks - problems and priorities
Replies: 11
Views: 214

Re: ROM banks - problems and priorities

The Beeb reads the ROMs from highest priority socket to lowest priority, which in practical terms on a BBC B is from right to left. The leftmost socket is reserved for the OS (except in some special cases not relevant here). So the OS will scan for the first language ROM it finds and select it as th...
by BeebMaster
Mon Sep 14, 2020 12:50 pm
Forum: for sale / freebies
Topic: Ribbon Cables
Replies: 12
Views: 420

Re: Ribbon Cables

Metaphors, eh? I didn't get where I am today without recognising a horse of a different colour changing courses in mid stream!
by BeebMaster
Sun Sep 13, 2020 11:22 am
Forum: for sale / freebies
Topic: Ribbon Cables
Replies: 12
Views: 420

Re: Ribbon Cables

Ian - Could you do a double disc drive one (one of the drives being a normal teac edge connector and one being a gotek?) And for an extra twist, could you break out the line which selects which one would be drive 0 and which one would be drive 1 ? Yes, I can certainly make a 34 way ribbon cable wit...
by BeebMaster
Sat Sep 12, 2020 4:04 pm
Forum: 8-bit acorn hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 290MHz)
Replies: 1262
Views: 158691

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

So much for the tape measure! 12" is a just a bit short for coming out of the back, it won't reach the lid, but it's nice for a cartridge escape:
IMG_7587.JPG
IMG_7590.jpg
by BeebMaster
Sat Sep 12, 2020 3:24 pm
Forum: 8-bit acorn hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 290MHz)
Replies: 1262
Views: 158691

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

Yeh, I reckon a Pi4 will go ablaze inside a Master, I have a 12V PC fan blue-tacked to the top of my Pi4. The good news is a 3ft cable also works with the Retroclinic internal adapter (with Pi Zero). So, externally for the internal Tube we could pass a cable through the Domesday SCSI slit at the bac...
by BeebMaster
Sat Sep 12, 2020 2:53 pm
Forum: 8-bit acorn hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 290MHz)
Replies: 1262
Views: 158691

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

I think the trouble with putting a ribbon cable between the Pi and the Retroclinic internal Tube adapter is that the Pi is going to be flopping about and could come into contact with the adapter or other internal parts of the Master. I think I will try it though, I do have a Pi3 and a Retroclinic in...
by BeebMaster
Sat Sep 12, 2020 2:45 pm
Forum: for sale / freebies
Topic: Ribbon Cables
Replies: 12
Views: 420

Re: Ribbon Cables

I love you John...love you.

It's nefidately improved my skimping crills...skrimps...scrimp....
IMG_7580.JPG
I love you.
by BeebMaster
Sat Sep 12, 2020 2:38 pm
Forum: 8-bit acorn hardware
Topic: BBC A/B keyboards and DIP switches
Replies: 1
Views: 91

Re: BBC A/B keyboards and DIP switches

The BBC Micro has 8 links on the keyboard to set various things as default (disc drive access timings, screen mode, DFS/NFS priority within DNFS): http://www.beebmaster.co.uk/BeebHelp/ConfigBBCB.html It's a lot more convenient to fit a DIP switch so that the links can be easily changed rather than h...
by BeebMaster
Sat Sep 12, 2020 12:32 pm
Forum: for sale / freebies
Topic: Ribbon Cables
Replies: 12
Views: 420

Ribbon Cables

I'm having a ribbonfest this weekend as I can't go to Proms in the Park for the first time since 1997 so it's something to do instead. Here's a selection of made-up and part-made-up cables I've been working on: Ribbons.jpg Ribbon1big.jpg Ribbon2big.jpg I can do 20, 34, 40 and 50 way ribbon cables in...

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