Search found 609 matches

by KenLowe
Sun May 26, 2019 8:59 am
Forum: for sale / freebies
Topic: Sold Out: New ROM / RAM Expansion Board for BBC B
Replies: 66
Views: 2699

Re: Sold Out: New ROM / RAM Expansion Board for BBC B

Ok. So all Stardot and Facebook members who purchased a board from me should have been contacted about a fix to an issue that was picked up with certain file system ROMs not initialising correctly if installed on the mainboard. However, a number of users have not picked up PM yet or not responded to...
by KenLowe
Tue May 21, 2019 6:57 am
Forum: software: classic games
Topic: BBC B Elite versions
Replies: 26
Views: 1096

Re: BBC B Elite versions

Thanks for the feedback, guys. I'll dig into this a bit further when I get a chance. I seem to recall having these issues before, but for the life of me, I can't remember what I did to overcome them!
by KenLowe
Mon May 20, 2019 2:40 pm
Forum: software: classic games
Topic: BBC B Elite versions
Replies: 26
Views: 1096

Re: BBC B Elite versions

I tried to run a copy of this image on three different machines last night, but they all hung up at the same point of of launching the ship. I never got to the spinning planet. What confuses me is that these images have worked in the past... First machine didn't work, so I removed my new IntegraB bo...
by KenLowe
Tue May 14, 2019 11:49 am
Forum: hardware
Topic: Computer Concept PALPROM redesign.
Replies: 2
Views: 283

Computer Concept PALPROM redesign.

Following on from this thread, I recently had some PCBs fabricated to see if I could recreate any of the CC 128k PALROMs, like SpellMaster and Mega 3 ROM on a new carrier. Surprisingly (for me), it worked first time! One the goals I set myself was to create a carrier board that was no wider than a s...
by KenLowe
Sun May 12, 2019 7:26 pm
Forum: for sale / freebies
Topic: Sold Out: New ROM / RAM Expansion Board for BBC B
Replies: 66
Views: 2699

Re: Sold Out: New ROM / RAM Expansion Board for BBC B

I'm glad you got it working. Did it work as you expected?
by KenLowe
Sun May 12, 2019 6:00 pm
Forum: for sale / freebies
Topic: Sold Out: New ROM / RAM Expansion Board for BBC B
Replies: 66
Views: 2699

Re: Sold Out: New ROM / RAM Expansion Board for BBC B

Not sure why it's doing that. I've tried it on a couple of machines without any problem. I've made a couple of slightly different versions for you to try: RAMSET2 - Loads machine code into a DIM area RAMSET3 - As 2, but this one doesn't try to auto reboot. Can you test these and see what happens. Mi...
by KenLowe
Sun May 12, 2019 5:09 pm
Forum: for sale / freebies
Topic: Sold Out: New ROM / RAM Expansion Board for BBC B
Replies: 66
Views: 2699

Re: Sold Out: New ROM / RAM Expansion Board for BBC B

Hmmm. After you confirm, the BBC should reset. Did that not happen?
by KenLowe
Sun May 12, 2019 4:51 pm
Forum: for sale / freebies
Topic: Sold Out: New ROM / RAM Expansion Board for BBC B
Replies: 66
Views: 2699

Re: Sold Out: New ROM / RAM Expansion Board for BBC B

Ok. That should have fixed it. Try downloading it again.
by KenLowe
Sun May 12, 2019 4:10 pm
Forum: for sale / freebies
Topic: Sold Out: New ROM / RAM Expansion Board for BBC B
Replies: 66
Views: 2699

Re: Sold Out: New ROM / RAM Expansion Board for BBC B

Oh. Sorry about that. I was having a couple of issues saving it on my GoTek, but thought I'd solved it. I'm currently out, but should be back shortly to fix it.
by KenLowe
Sun May 12, 2019 3:23 pm
Forum: for sale / freebies
Topic: Sold Out: New ROM / RAM Expansion Board for BBC B
Replies: 66
Views: 2699

Re: New ROM / RAM Expansion Board for BBC B

- the extra ram is not showed by *ROMS but it works, and BeebAid shows correctly the slots as RAM; Is it normal? 1. Is normal. Only the 4 preconfigured banks show as RAM. I am hoping to write a utility that will allow you to specify your additional RAM banks, so that *ROMS does report these banks, ...
by KenLowe
Sun May 12, 2019 9:55 am
Forum: for sale / freebies
Topic: Sold Out: New ROM / RAM Expansion Board for BBC B
Replies: 66
Views: 2699

Re: New ROM / RAM Expansion Board for BBC B

I'm still testing the board (and maybe i don't know how to use it ;) ), so: - the extra ram is not showed by *ROMS but it works, and BeebAid shows correctly the slots as RAM; - i had to reset (@+BREAK) the board once, since i got "Language?" after some time; - i can't get AMX SuperArt Working: Roms...
by KenLowe
Sat May 11, 2019 10:25 pm
Forum: for sale / freebies
Topic: Sold Out: New ROM / RAM Expansion Board for BBC B
Replies: 66
Views: 2699

Re: New ROM / RAM Expansion Board for BBC B

aotta wrote:
Sat May 11, 2019 9:41 pm
where did you find the extralong pins socket for the CPU?
APA-640-T-P from here
aotta wrote:
Sat May 11, 2019 9:41 pm
I am still playing with jumpers, trying to config my 62256 RAM
Are you having problems getting the extra 62256 RAM to work?
by KenLowe
Wed May 08, 2019 11:33 am
Forum: for sale / freebies
Topic: BeebMaster BBC B Econet Kit
Replies: 53
Views: 4073

Re: BeebMaster BBC B Econet Kit

...and yesterday, I received something very similar: 20190507_174330.jpg A couple of kits, a clock, a few cables and a couple of terminators. Not sure when I'll get time to install the kits and get a network up and running. Time permitting, maybe this weekend [-o< [-o< Thanks Ian =D> =D> =D>
by KenLowe
Tue May 07, 2019 4:09 pm
Forum: hardware
Topic: Raspberry Pi to 1MHz bus interface
Replies: 85
Views: 4777

Re: Raspberry Pi to 1MHz bus interface

dp11 wrote:
Wed Apr 10, 2019 7:55 pm
I'm just getting ready to do a release.
KenLowe wrote:
Thu Apr 11, 2019 5:16 pm
If you've still got any spares, a couple of full kits is definitely something I'd be interested in.

Thanks
Ken.
Have I missed out on this, or is it still a work in progress?

Thanks
Ken.
by KenLowe
Sun May 05, 2019 9:20 pm
Forum: emulators
Topic: MAME: How to ... ?
Replies: 13
Views: 999

Re: MAME: How to ... ?

Thanks for the reply. I did notice that your code is quite modular and wondered how these types of boards would fit that structure. I can't talk for all the RAM / ROM boards, but most flying leads are probably just picking up R/W and ROM select signals. However, as you've highlighed, the IntegraB is...
by KenLowe
Fri May 03, 2019 8:25 pm
Forum: hardware
Topic: Turbo MMC Interface
Replies: 36
Views: 5571

Re: Turbo MMC Interface

You need an associated .inf file to go with the ROM image. Drag a file from one of the SSDs onto your desktop to see how a typical .inf file is formatted.
by KenLowe
Fri May 03, 2019 1:04 pm
Forum: emulators
Topic: MAME: How to ... ?
Replies: 13
Views: 999

Re: MAME: How to ... ?

Hi Nigel,

Would you consider adding the IntegraB ROM / RAM / shadow RAM / RTC expansion board to MAME? It's something I added to BeebEm many years ago, if you wanted to look at the code.

TIA for considering.
Ken.
by KenLowe
Wed May 01, 2019 6:16 pm
Forum: hardware
Topic: Beeb 1MHz Bus FPGA Adaptor
Replies: 114
Views: 4698

Re: Beeb 1MHz Bus FPGA Adaptor

Please count me in. I can't resist these projects!
by KenLowe
Sat Apr 27, 2019 6:44 pm
Forum: for sale / freebies
Topic: Sold Out: New ROM / RAM Expansion Board for BBC B
Replies: 66
Views: 2699

Re: FS: New ROM / RAM Expansion Board for BBC B

@aotta @Rod C That's your boards dropped off with the courier. Please allow a couple of weeks for delivery. Edit 1: I have one further board built and ready to ship. After that, I'm waiting for a couple of components to complete the final two PCBs. Edit 2: One more sold. Remaining components receive...
by KenLowe
Sat Apr 27, 2019 8:10 am
Forum: for sale / freebies
Topic: Sold Out: New ROM / RAM Expansion Board for BBC B
Replies: 66
Views: 2699

Re: FS: New ROM / RAM Expansion Board for BBC B

Rod C wrote:
Sat Apr 27, 2019 7:47 am
Hi Ken
If I can be "right on the deadline" I would like to purchase one of your boards. Is postage about GBP15 to Australia still OK?

Can't message you yet. Perhaps an Admin can enable me?
Cheers
Rod
Yes. £15 P&P should still fine. I'll PM you with contact details.
by KenLowe
Sat Apr 27, 2019 5:57 am
Forum: for sale / freebies
Topic: Sold Out: New ROM / RAM Expansion Board for BBC B
Replies: 66
Views: 2699

Re: FS: New ROM / RAM Expansion Board for BBC B

Since i can't repair my WE RAMROM board, and seems you made a new batch... Interested in one Integra + 32k RAM! How much is shipping cost to Italy? That was just in time. I was just about to post them up on ebay at a higher price! I'll send PM with details. Just to be clear, the IntegraB board come...
by KenLowe
Wed Apr 24, 2019 11:30 pm
Forum: hardware
Topic: Raspberry Pi to 1MHz bus interface
Replies: 85
Views: 4777

Re: Raspberry Pi to 1MHz bus interface

dp11 wrote:
Wed Apr 24, 2019 9:37 pm
If anyone is good with recreating Harddisc FSMAP I would be interested to hear from you.
I don't know if this might help...

viewtopic.php?f=3&t=2022&p=13964#p13964

Edit: Link updated 2x!
by KenLowe
Tue Apr 23, 2019 10:56 pm
Forum: hardware
Topic: Another BBC B Needs Fixing.
Replies: 20
Views: 844

Re: Another BBC B Needs Fixing.

Sounds like you had a bad connection when the RAM was soldered directly into the board, and explains the very intermittent behaviour.

Glad you got it fixed. Well done. =D> =D> =D>
by KenLowe
Tue Apr 23, 2019 3:02 pm
Forum: for sale / freebies
Topic: Sold Out: New ROM / RAM Expansion Board for BBC B
Replies: 66
Views: 2699

Re: FS: New ROM / RAM Expansion Board for BBC B

I built up another couple of boards over the Easter weekend if anyone's still interested getting one. I'll give it a couple of days here, before posting them on ebay. Running short on PCBs now, and not sure if I should order up a second batch. :-k :-k
by KenLowe
Mon Apr 22, 2019 8:57 pm
Forum: hardware
Topic: Master ROM - what does it do?
Replies: 7
Views: 601

Re: Master ROM - what does it do?

The Master ROM that I have is a PALPROM device that sits in a carrier board, and was published by Beebbugsoft. I've not really used it, but having just plugged it in I can see that there are a lot of utility commands, which I guess attempts to emulate some of the additional functions that are standa...
by KenLowe
Sat Apr 20, 2019 10:53 pm
Forum: hardware
Topic: New ROM / RAM Expansion Board for BBC B
Replies: 93
Views: 3871

Re: New ROM / RAM Expansion Board for BBC B

Is there a copy of 2.26 with the SRAM tools removed? I attach one I made just now. To explain, the DFS 2.26 ROM is actually four logical sideways ROMs, each with its own service routine, packed into the same physical ROM. These are: Some RAM size/startup message code Sideays RAM utils DFS Tubehost ...
by KenLowe
Sat Apr 20, 2019 6:32 pm
Forum: hardware
Topic: BBC B+ 64k EEPROMs and SW RAM
Replies: 17
Views: 746

Re: BBC B+ 64k EEPROMs and SW RAM

I think you're right. The extra 32k of memory that took the BBC B+ to 64k (compared to a standard 32k beeb) was used for shadow RAM (20k) & private RAM (12k). It must have been the additional daughter board (which took the BBC B+ from 64k to 128k), that added the 4 x 16k SWRAM banks.
by KenLowe
Tue Apr 16, 2019 10:23 pm
Forum: hardware
Topic: Last Gasp for the 8271
Replies: 12
Views: 678

Re: Last Gasp for the 8271

Same here. Interested in a couple, subject to knowing the price...
by KenLowe
Mon Apr 15, 2019 11:30 am
Forum: hardware
Topic: New ROM / RAM Expansion Board for BBC B
Replies: 93
Views: 3871

Re: New ROM / RAM Expansion Board for BBC B

Folks, Just to make everyone aware, I picked up a potential 'issue' with the IntegraB board, if using the board with a Cypress (RAMTRON) FM18W08 FRAM module. I haven't supplied FRAM modules to anyone, and you can't actually buy a drop in module, so I don't think this will have affected anyone, and i...