Search found 1736 matches

by RobC
Mon Oct 23, 2017 8:16 am
Forum: for sale / freebies
Topic: VideoNuLA boards
Replies: 34
Views: 1609

Re: VideoNuLA boards

I've made another batch of boards in preparation for the RISC OS London Show. If you're coming to the show, you'll be able to see VideoNuLA in action and have a play with it. If you want to purchase one (or more!), I'll have units available to buy on the day. I'm also giving a talk on its developmen...
by RobC
Sat Oct 21, 2017 7:48 am
Forum: software: other
Topic: 6809 and FLEX
Replies: 142
Views: 7709

Re: 6809 and FLEX

Yes, thanks - it's come through. I'll try to take a look at it next week.
by RobC
Fri Oct 20, 2017 5:08 pm
Forum: software: other
Topic: 6809 and FLEX
Replies: 142
Views: 7709

Re: 6809 and FLEX

I've made start, let me know if you'd like the code so far. Yes please. I'm not really much kop with SVN or git but can give it a go if needed. I'm not sure how to load an intel hex file into Flex... I just build the source with a09's FLEX binary option and then add it to the FLEX boot disk with Fl...
by RobC
Fri Oct 20, 2017 11:43 am
Forum: software: other
Topic: 6809 and FLEX
Replies: 142
Views: 7709

Re: 6809 and FLEX

You should be able to grab everything from $0000 to $BFFF.

Not sure whether I sent you this - it's the FLEX Advanced Programmer's Manual and covers the memory map and system routines etc.
by RobC
Fri Oct 20, 2017 10:51 am
Forum: software: other
Topic: 6809 and FLEX
Replies: 142
Views: 7709

Re: 6809 and FLEX

I'm up to my eyeballs in making more VideoNuLA boards this week but I might be able to look at putting your BBC BASIC on FLEX next week. (Unless you'd prefer to do it yourself.)

My plan is to have a Pi co-pro running at the RO London show so it would be a good thing to show off...
by RobC
Thu Oct 19, 2017 9:13 pm
Forum: software: other
Topic: 6809 and FLEX
Replies: 142
Views: 7709

Re: 6809 and FLEX

Here are my disk driver and terminal I/O driver. This is the DC version - I had to simplify the disk driver to get it to work so it doesn't do things like verify.
by RobC
Thu Oct 19, 2017 5:47 pm
Forum: software: other
Topic: 6809 and FLEX
Replies: 142
Views: 7709

Re: 6809 and FLEX

dominicbeesley wrote:Are your routines on that .dsk image...

No - I think that disk image came from the Flex User Group so any drivers will be for some other machine.

I'll dig out the source code for my drivers and post them here.
by RobC
Wed Oct 18, 2017 2:51 pm
Forum: software: other
Topic: 6809 and FLEX
Replies: 142
Views: 7709

Re: 6809 and FLEX

No worries - I can send again if it's easier...
by RobC
Wed Oct 18, 2017 12:43 pm
Forum: software: other
Topic: 6809 and FLEX
Replies: 142
Views: 7709

Re: 6809 and FLEX

All my stuff is based on 3.01 which is the last official release. To create the disk, I used a tool called "FloppyMaint" that I got off the Flex User Group. I think I posted it in this thread - if not, I'll mail it to you. This allows you to create various flavours of FLEX disks (as there ...
by RobC
Wed Oct 18, 2017 11:51 am
Forum: software: other
Topic: 6809 and FLEX
Replies: 142
Views: 7709

Re: 6809 and FLEX

Right - here's the version off my DC. I've just tested it and it works. However, I'd forgotten that you must do *DTRAP to redirect disk accesses to the RAM drives. Otherwise, it'll hang... SHIFT-BREAK will load it but you need to enter a keypress before FLEX will start. *FLEX or *!BOOT shouldn't nee...
by RobC
Wed Oct 18, 2017 11:42 am
Forum: software: other
Topic: 6809 and FLEX
Replies: 142
Views: 7709

Re: 6809 and FLEX

It has to be the wrong image then - I thought it was the correct one as the timestamp tallied with the date of the RO SW Show.

I'll pull the working one off the DC USB stick and repost.

It's based on FLEX 3.01 which is the last official release.
by RobC
Wed Oct 18, 2017 11:25 am
Forum: software: other
Topic: 6809 and FLEX
Replies: 142
Views: 7709

Re: 6809 and FLEX

Does *FLEX not work?

For some reason, SHIFT-BREAK has never worked.

It's also possible that this is not the correct version - I'll dig out the USB stick I use with my DC.
by RobC
Tue Oct 17, 2017 5:01 pm
Forum: software: other
Topic: 6809 and FLEX
Replies: 142
Views: 7709

Re: 6809 and FLEX

Did you get anywhere with this Rob? It would be nice to get FLEX running on my Master and then I could have a go at tweaking the BAS6809 port to work on Flex Yes - I now have versions that work on the DC and on GoSDC. I'll dig them out and post them on here later tonight. EDIT: Added DataCentre and...
by RobC
Tue Oct 17, 2017 2:59 pm
Forum: hardware
Topic: Mystery object, fits Econet socket
Replies: 19
Views: 350

Re: Mystery object, fits Econet socket

It seems that the Econet Level 3 fileserver real time clock module was also potted: http://www.cjemicros.co.uk/micros/individual/newprodpages/prodinfo.php?prodcode=ACO-ECONETRTC Maybe this is a Master/Arc equivalent? (Not sure how it would work in place of the Econet module though.)
by RobC
Tue Oct 17, 2017 12:12 pm
Forum: hardware
Topic: Mystery object, fits Econet socket
Replies: 19
Views: 350

Re: Mystery object, fits Econet socket

sirbod wrote:What's on the other side? The chips will help identify it.

From the attachment, it looks like the whole thing is potted/covered in resin.

Makes me think it might be somewhat unusual as it seems like a lot of effort to protect standard hardware...
by RobC
Tue Oct 17, 2017 8:41 am
Forum: software: other
Topic: Variants of ADFS
Replies: 16
Views: 412

Re: Variants of ADFS

From the documentation, it seems that GoSDC can add the contents of a physical hard drive to its flash card: To add a hard disc to the flash card, use : *SDCTool SDCADI AN $4$ <your disc name> I've never tried this but could dig out my SCSI drive and give it a go. I have used the PC-based GoSDCio co...
by RobC
Tue Oct 17, 2017 7:06 am
Forum: software: other
Topic: Z80 on a BBC B
Replies: 30
Views: 330

Re: Z80 on a BBC B

I'd also vote for a Pi co-pro.

Not only is it the cheapest option but, alongside access to super-fast Z80 and 6502 co-pros, you get a 6809, ARM, 32016, 80286 and the 1GHz (!) native Pi ARM. And you can switch between them all with a *FX command.
by RobC
Sun Oct 15, 2017 8:53 am
Forum: hardware
Topic: RISC-PC Not Working
Replies: 61
Views: 2235

Re: RISC-PC Not Working

I thought I read about a clock chip on a podule (or at least carrier board) that you might be able to build to get round battery board leakage where the damage is too bad to put in a replacement component. CJE make them . You can also hire them to see if it fixes the problem: http://www.cjemicros.c...
by RobC
Sat Oct 14, 2017 5:03 pm
Forum: hardware
Topic: AKF12 display issues
Replies: 7
Views: 220

Re: AKF12 display issues

philb wrote:Also discovered that the machine does start the desktop fine if I type *DESKTOP but it always stops at the Supervisor prompt after a reset. Is this likely to be bad CMOS?

Could be. What does *STATUS give for the "Language" setting? I think it should be 10 for the desktop.
by RobC
Fri Oct 13, 2017 10:01 pm
Forum: software: other
Topic: Another C compiler?
Replies: 7
Views: 513

Re: Another C compiler?

Looking through some old Micro Users tonight, I came across this: Brasscourt.jpg Has anyone heard of this before? (I wonder if this is the same company? https://beta.companieshouse.gov.uk/company/01863005 ) EDIT: The surname Earle ties in with the address given in the advert so it looks like it is t...
by RobC
Fri Oct 13, 2017 9:37 pm
Forum: hardware
Topic: Palettemate / enhanced video ULA with 4096 colours
Replies: 506
Views: 21632

Re: Palettemate / enhanced video ULA with 4096 colours

Is this new device compatible with the specifications / usage of similar add-ons from the Beeb's heyday?i.e.1. the original Palettemate deviceand2. the SPX (the Saturn Palette Extension) device I've not been able to find any documentation for either of these boards so don't know if the VideoNuLA is...
by RobC
Fri Oct 13, 2017 3:32 pm
Forum: hardware
Topic: Running DosPlus (version 2.1) with Raspberry Pi 80286 processor emulator on BBC master 128.
Replies: 14
Views: 410

Re: Running DosPlus (version 2.1) with Raspberry Pi 80286 processor emulator on BBC master 128.

marcusjambler wrote:I'm also interested in getting a copy of the CF card HD image please.

No probs - I'll send you a PM with the link :D
by RobC
Fri Oct 13, 2017 9:33 am
Forum: hardware
Topic: Running DosPlus (version 2.1) with Raspberry Pi 80286 processor emulator on BBC master 128.
Replies: 14
Views: 410

Re: Running DosPlus (version 2.1) with Raspberry Pi 80286 processor emulator on BBC master 128.

Good morning everyone. Apologies, please forgive me coming in to this but I've been having the same issue in creating media to install dos plus on my RPi board. I have a CF card on DataCentre, would it be possible to obtain a copy of an image? I think the Dropbox link I setup is still available - I...
by RobC
Fri Oct 13, 2017 7:04 am
Forum: for sale / freebies
Topic: SmallyMouse2 bare PCBs FTAGH
Replies: 7
Views: 206

Re: SmallyMouse2 bare PCBs FTAGH

Now all gone - I'll PM everyone who has expressed an interest.
by RobC
Thu Oct 12, 2017 4:59 pm
Forum: for sale / freebies
Topic: SmallyMouse2 bare PCBs FTAGH
Replies: 7
Views: 206

SmallyMouse2 bare PCBs FTAGH

With my latest order of VideoNuLA PCBs, I noticed that EasyEDA were offering 10 additional PCBs for $2 with each order. So, I ordered 10 SmallyMouse2 PCBs and, on the basis that I'll probably never need more than 3 for myself, am offering the rest on here. Please note, the offer was only for lead-ba...
by RobC
Wed Oct 11, 2017 8:57 pm
Forum: upcoming and recent events & exhibitions
Topic: London Show / Saturday 28th October 2017
Replies: 14
Views: 602

Re: London Show / Saturday 28th October 2017

helpful wrote:Do we have any Atoms or Electrons yet? Anyone bringing a Pi copro?

I was planning to bring a Pi copro.
by RobC
Wed Oct 11, 2017 8:09 am
Forum: software & utilities for the pc, mac or unix
Topic: BBC Micro Image Converter 0.20 released!
Replies: 25
Views: 4094

Re: BBC Micro Image Converter 0.20 released!

If so I'd love to be able to export to beeb at a specific resolution, I'm trying to convert some Apple II screens that are 280x192, any chance you're still in development and might take a look? When I was doing this for BeebJack, I just modified the source images in Paint so that they had a black b...
by RobC
Tue Oct 10, 2017 9:20 pm
Forum: general
Topic: "Beebon" magazines on 8bs
Replies: 7
Views: 246

Re: "Beebon" magazines on 8bs

This is something I hadn't come across before but, if you look at the scan of the July 1982 PCW at the same site, there's a section called "Mapping out the Beebon". So, the name seems to have been in common usage in the early days.
by RobC
Tue Oct 10, 2017 12:43 pm
Forum: hardware
Topic: Palettemate / enhanced video ULA with 4096 colours
Replies: 506
Views: 21632

Re: Palettemate / enhanced video ULA with 4096 colours

Is it possible to the future, a new version of VNuLA, which will put the boards over the soldered ULAs without removed the old chips? Possibly though you'd still have to disable the original as you wouldn't want both the VideoNuLA and original ULA generating the system clocks and colour output. (I ...
by RobC
Tue Oct 10, 2017 6:46 am
Forum: hardware
Topic: Video ULA/proc VC2023 in an Iss3 beeb weirdness..
Replies: 7
Views: 212

Re: Video ULA/proc VC2023 in an Iss3 beeb weirdness..

Glad you got it sorted :D :D

Go to advanced search