Search found 3023 matches

by retroclinic
Sun Sep 24, 2017 2:41 pm
Forum: upcoming and recent events & exhibitions
Topic: ABUG EAST MIDLANDS (Winter Warmer) 17-19 November 2017 (Leicestershire) BOOKING THREAD
Replies: 51
Views: 1493

Re: ABUG EAST MIDLANDS (Winter Warmer) 17-19 November 2017 (Leicestershire) BOOKING THREAD

Hi.

Confirming I'll come on the Sunday, but I'll probably be with no kit - unless anyone wants anything in particular.

Thanks, Mark.
by retroclinic
Tue Aug 01, 2017 10:02 am
Forum: software: other
Topic: Datacentre Copy ADFS Disc to USB Question
Replies: 42
Views: 4047

Re: Datacentre Copy ADFS Disc to USB Question

Basic programs on JGHs site are usually just BBC Tokenised BASIC, so drag it to the USB Stick, rename it 7 characters with no file extension, then just LOAD it from drive 5 on the DataCentre in BASIC.

Thanks, Mark.
by retroclinic
Wed Jul 26, 2017 3:57 pm
Forum: software: other
Topic: Datacentre Copy ADFS Disc to USB Question
Replies: 42
Views: 4047

Re: Datacentre Copy ADFS Disc to USB Question

,,,,,,The USB "drive" in the DataCentre is only visible to *CAT, *EXPORT and *IMPORT, it doesn't work as a filing system Erm..yes it does, in part.... so you can't save/load to it. Yes you can. It supports the OS calls that allow SAVE and LOAD, both as BASIC and *SAVE *LOAD etc. The only ...
by retroclinic
Wed Jun 28, 2017 4:33 pm
Forum: software: new games
Topic: A new conversion for the BBC Micro
Replies: 18
Views: 1164

Re: A new conversion for the BBC Micro

Looks good, I'll try it a bit later. This looks like Fervour on the Arc?
by retroclinic
Sun Mar 12, 2017 6:25 pm
Forum: wanted
Topic: Master 128 Power supplies
Replies: 0
Views: 223

Master 128 Power supplies

Hi Folks.

I'm looking for one or two (or 10!) Master 128 Power supplies, if anyone has any going spare? They don't need to work, or be recapped etc., just as they are will be fine, as long as they're not too rusty?

Let me know if you have any.

Thanks, Mark.
by retroclinic
Sun Mar 12, 2017 6:23 pm
Forum: wanted
Topic: bbc master case ideally damaged
Replies: 2
Views: 354

Re: bbc master case ideally damaged

Hi. Yes, I've got Master cases if you want them. Cosmetically challenged, but not damaged or with etched in security marks, just yellowed somewhat and some have painted or written on markings.

Thanks.
by retroclinic
Wed Mar 01, 2017 9:06 pm
Forum: hardware
Topic: Using OS 1.2 etc on a BBC Master ?
Replies: 33
Views: 5953

Re: Using OS 1.2 etc on a BBC Master ?

Any joy on the patched ADFS 1.32 for the Master - the one where the floppies work as well as the IDE in Model B mode?

Thanks.
by retroclinic
Wed Mar 23, 2016 4:05 pm
Forum: for sale / freebies
Topic: BBC Micro Male AUX Power connectors
Replies: 0
Views: 375

BBC Micro Male AUX Power connectors

Hi Folks.

I've now got stock of the male power connectors to fit the socket under the Beeb and Master. They are for sale singly on fleabay:

http://www.ebay.co.uk/itm/262348907853

Or if you want multiple quantities, I can do a better price.

Thanks, Mark.
by retroclinic
Wed Oct 14, 2015 6:40 pm
Forum: for sale / freebies
Topic: Model B+128K Boxed Immactulate
Replies: 2
Views: 613

Model B+128K Boxed Immactulate

Hi Folks. I've just listed my one and only immaculate BBC Model B+128 boxed, fully working, refurbished, no yellowing or damage to the case. Caps replaced etc. Proper collectors one this with matching serial numbers on the box. Not cheap, but these don't come up that often. http://www.ebay.co.uk/itm...
by retroclinic
Wed Jul 01, 2015 4:20 pm
Forum: software: other
Topic: Using the beebs TMS5220 Speech chip without a ROM
Replies: 25
Views: 2212

Re: Using the beebs TMS5220 Speech chip without a ROM

Doesn't the Computer Concepts Speech ROM (not to be confused with the Superior software SPEECH! one) talk directly to the 5220? Does it need a 6100 in there as well?

Mark.
by retroclinic
Wed Jun 03, 2015 10:04 am
Forum: hardware
Topic: How to eject a Canon MDD221
Replies: 4
Views: 452

Re: How to eject a Canon MDD221

In the area highlighted is a solenoid, and on the actuator is a small rubber bush that is meant to smooth it's operation. This bush perishes over time. For those drives, I've just simply removed the solenoid completely as it just serves to load the heads onto the drive, something which later drives ...
by retroclinic
Thu May 14, 2015 9:06 am
Forum: hardware
Topic: bbc b psu problem
Replies: 8
Views: 703

Re: bbc b psu problem

There are two 100uF caps to replace if the -5v is out of spec. Don't have the diagram infront of me, but they're the only two of that value on the output side. Use low ESR for the least noise on the sound line. You can get them at Maplins, CPC, etc, or I've got them if you need to be sure of getting...
by retroclinic
Tue Apr 21, 2015 10:43 pm
Forum: software: other
Topic: US Beeb (UNB09) Welcome disk
Replies: 5
Views: 730

Re: US Beeb (UNB09) Welcome disk

It looks like an original, yes. Label certainly doesn't look like a repro, and is inline with the B+ Utility disk.

IMG_0480.JPG


Mark.
by retroclinic
Tue Apr 21, 2015 9:42 pm
Forum: software: other
Topic: US Beeb (UNB09) Welcome disk
Replies: 5
Views: 730

US Beeb (UNB09) Welcome disk

Hi Folks. I've come across a Welcome disk that is different, and I think it's the original one for the US Beebs. I say that because some of the programs seem to run in screen modes that only use 3/4 of the screen, as if they were NTSC modes? Also, the title screen says "Acorn Computer", si...
by retroclinic
Wed Apr 08, 2015 7:16 pm
Forum: for sale / freebies
Topic: Worth Taking a Look At
Replies: 2451
Views: 166849

Re: Worth Taking a Look At

Some Masters that need some tlc http://m.ebay.co.uk/itm/361263031627 "some"? :lol: Definitely FUBAR, at least the first one! Same seller has the lot of 9 for £499, probably going to be similar condition inside if they've come from the same place, all rusted. Just a bit better cosmetically...
by retroclinic
Wed Apr 01, 2015 8:42 pm
Forum: off-topic
Topic: LOLPRICE
Replies: 2652
Views: 170485

Re: LOLPRICE

Alright, how much for this Amiga A1200 with internal CF card HDD and 68030 accelerator card? Dont tell me. I gave my A1200 with 50mhz 68050 and 32MB Ram (or something like that) in a tower case to a friend for free about 15 years ago. If I might out now it is worth loads I will cry. it's probably w...
by retroclinic
Sun Mar 29, 2015 11:03 am
Forum: hardware
Topic: Non-working BBC B+ 64K [fixed!]
Replies: 30
Views: 2385

Re: Non-working BBC B+ 64K

Tried replacing the System VIA? It controls both the keyboard and the sound, and a dead one gives those symptoms. Mark. Thanks for the suggestion Mark! The symptoms are indeed exactly the same when I remove the system VIA from my BBC B. I replaced the system VIA (IC20) using a known working 6522 fr...
by retroclinic
Sat Mar 28, 2015 10:52 am
Forum: hardware
Topic: Non-working BBC B+ 64K [fixed!]
Replies: 30
Views: 2385

Re: Non-working BBC B+ 64K

Tried replacing the System VIA? It controls both the keyboard and the sound, and a dead one gives those symptoms.

Mark.
by retroclinic
Sun Mar 01, 2015 10:29 pm
Forum: hardware
Topic: BBC Micro repair service needed - Essex
Replies: 16
Views: 1188

Re: BBC Micro repair service needed - Essex

Thanks for the +1 chaps.

Mark.
by retroclinic
Sun Mar 01, 2015 10:05 pm
Forum: hardware
Topic: Z80 co-pro, and datacentre?
Replies: 99
Views: 6917

Re: Z80 co-pro, and datacentre?

When I checksum the ROM image I saved from the physical chip that came with my DC, I get the same result as you: 9795. But when I checksum the RamFS ROM image that can be found on the CD-ROM that comes with the DC, I get EBC9. That's ok. The image on the CD doesn't include the extra 1K or so of emp...
by retroclinic
Sun Mar 01, 2015 9:54 pm
Forum: hardware
Topic: Z80 co-pro, and datacentre?
Replies: 99
Views: 6917

Re: Z80 co-pro, and datacentre?

Hi.

Only one official release version of RamFS, and that's 1.00! If anyone's done a patch, then they should have updated the version number.

Regards, Mark.
by retroclinic
Sat Feb 28, 2015 7:54 pm
Forum: hardware
Topic: Z80 co-pro, and datacentre?
Replies: 99
Views: 6917

Re: Z80 co-pro, and datacentre?

Hi Folks. Mine's identical except that its handwritten "Ver" is "E", which I presume stands for "External", which is what mine is. I just unscrewed the case to have a look at the board. Not necessarily related to this thread but I have found that an External Datacentre ...
by retroclinic
Fri Jan 30, 2015 1:07 pm
Forum: hardware
Topic: Repair tip for old A305 A310 A440 etc floppy drive
Replies: 12
Views: 1545

Re: Repair tip for old A305 A310 A440 etc floppy drive

Looks good, fine with me!
by retroclinic
Fri Jan 16, 2015 7:44 pm
Forum: hardware
Topic: Beeb Astec PSU - Q4 identification?
Replies: 3
Views: 419

Re: Beeb Astec PSU - Q4 identification?

It's TO-92.

I'm pretty sure it's an LM431 or TL431, just need to find out which one, as there are different types for different voltages, and also programmable ones.

Mark.
by retroclinic
Fri Jan 16, 2015 6:51 pm
Forum: hardware
Topic: Beeb Astec PSU - Q4 identification?
Replies: 3
Views: 419

Beeb Astec PSU - Q4 identification?

Hi Folks. After having my first Beeb PSU that had seriously exploded itself, with 3 dead transistors, 4 open circuit resistors as well as blown caps, I'm just going through the schems of the Beeb PSU to try and get spares of most of the semis. I've got to Q4, and it's marked 431C, but doesn't appear...
by retroclinic
Sat Dec 06, 2014 2:02 pm
Forum: hardware
Topic: FPGA programmer
Replies: 16
Views: 1557

Re: FPGA programmer

I know you've tracked up your boards already, but you could also add this to the co-pro itself, with a USB/B socket on the board.

Mark.
by retroclinic
Fri Dec 05, 2014 3:52 pm
Forum: off-topic
Topic: LOL DESCRIPTION
Replies: 571
Views: 45697

Re: LOL DESCRIPTION

http://www.ebay.co.uk/itm/191428637729

Sure is R@RE in that state. :roll:

Lee, I don't think even you could bring this case up to anything else apart from landfill.

Mark.
by retroclinic
Sun Nov 30, 2014 11:35 pm
Forum: software: other
Topic: 2nd processor software
Replies: 57
Views: 5968

Re: 2nd processor software

I've got several disks of a program called "Compass CAD systems", by British Thornton. I tried to boot one up on a Model B, and it said: "This is for a Master Turbo only" (Or words to that effect!) So I presume it also needs a second processor in an M128. I didn't go any further ...
by retroclinic
Fri Nov 28, 2014 10:55 am
Forum: hardware
Topic: Fixing up an Issue3 beeb to working order
Replies: 19
Views: 1551

Re: Fixing up an Issue3 beeb to working order

Might be worth plugging the MOS and BASIC directly into the mainboard sockets, and leaving the ROM board disconnected, at least until you isolate the problem. Yep - didn't work when I tried last night :) .....remembering to remake the East-West link on the lower half of S21? Without that you WILL g...
by retroclinic
Thu Nov 27, 2014 11:20 pm
Forum: general
Topic: Where is everyone? An information gathering topic
Replies: 96
Views: 10392

Re: Where is everyone? An information gathering topic

Added...although it did take me a few minutes to figure out HOW to change colour!

Mark.

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