Search found 38 matches

by guidol
Mon Jun 19, 2017 1:00 pm
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

hoglet wrote:
guidol wrote: You get this when you switch from the 6502 to the 6809 Co Pro without pressing Ctrl-Break.
I'll think about that when switching in the future :)
by guidol
Mon Jun 19, 2017 12:47 pm
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

Yep the newer bootcode is bigger as it does netboot stuff, but is also slower and so the PI is unlikely to power up in tube mode. Which is why I'm trying to keep the old bootcode. But I dont know if there is a older bootcode without netboot for the "new" Pi-Zero-W - the the only chance would be a P...
by guidol
Mon Jun 19, 2017 12:07 pm
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

You could try replacing the fixup start and bootcode files from https://github.com/raspberrypi/firmware/tree/master/boot Allright :) I replaced bootcode.bin , fixup_cd.dat and start_cd.elf (any other file to replace?) Now the ARM-frequence shows up as ARM_FREQ : 1000.000 MHz 1000.000 MHz 1000.000 M...
by guidol
Mon Jun 19, 2017 10:50 am
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

Please wipe the SDCARD and use the diamondback release. We have changed the build structure to be simpler so less files are needed. OK :-) seems to be better.... Now I also used the debug-kernel (some time ago when I last used the PiTube it allways had debug in the kernel) Do work at 700Mhz, but wh...
by guidol
Mon Jun 19, 2017 10:04 am
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

Just to clarify, when you say it "Fails" on Ctrl-Break, so you mean: - the Beeb doesn't detect the Co Pro at all (i.e. no Tube banner) - the Beeb does detect the Co Pro, but the language transfer hangs (i.e. no > prompt) What's the behaviour on an normal break? Hi, today I did get my Pi-Zero-W - so...
by guidol
Sat Jan 21, 2017 12:28 pm
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

It's been a while in coming, but here is a new release of PiTubeDirect, called the "Anaconda" release: https://github.com/hoglet67/PiTubeDirect/releases/tag/anaconda As always, feedback welcome! Many Thanks for this new release Dave + Ed + Dominic :) Short question: as there is no more cmdline - wh...
by guidol
Thu Jan 19, 2017 5:27 pm
Forum: for sale / freebies
Topic: PiTubeDirect signalconverter for BBC Micro
Replies: 159
Views: 18220

Re: PiTubeDirect signalconverter for BBC Micro

Hi, New batch of signal converter is available. ... have also added some resistor networks for better signals. (Less noise) Are the new additional resistor networks are only on the external ones? Or will there be also a Master-Version? Or do have the Master already the new resistors? Whats the new ...
by guidol
Wed Jan 04, 2017 1:03 pm
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

Thanks for this tip, it's very opportune and works a treat. I'd been debugging the null co-pro today trying to work out why it would not switch back. I think this is worthy of inclusion on the website, if it is not there already. Kjell has it (now) at the bottom of his page: http://www.sundby.com/i...
by guidol
Mon Jan 02, 2017 6:56 pm
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

Note, on a Master with a just Pi Tube Direct installed (i.e. no other Co Pro), it's important to *CONFIGURE INTUBE/EXTUBE to the opposite of where your Pi Tube Direct is installed: - e.g. If you have it fitted internally, then *CONFIGURE EXTUBE If you don't do this, then *FX 151,230,0 will not re-e...
by guidol
Mon Jan 02, 2017 5:54 pm
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

Hi Guys, There was a bug in the "Null Co Processor" which made it ignore *FX 151,230,N. This was fixed on 30th November... This will be included in the next full release. Is it possible that the fix isnt included when I clone actually from GitHub? My last compile via Windows 10 bash was on the 17th...
by guidol
Mon Jan 02, 2017 5:03 pm
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

Interesting, although I'm always using copro=14 in cmdline as I don't want the second processor on at boot. ;) I tried this also in the beginning....but with copro=14 the serial log told me, that this core isnt implemented and didnt let me switch the core via the FX-command. Probably the Core 14 ha...
by guidol
Mon Jan 02, 2017 3:45 pm
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

Hi Dave. Using the last official release I can't get my pi2 to start any of the cores. FX 151,230,x followed by ctrl-break won't start any of them! The serial console gives the correct stuff when the machine starts but none of the cores load. Hi trixtster, did got the same effect with my previous m...
by guidol
Mon Jan 02, 2017 10:51 am
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

:) Did found here a TTL-Adapter whis is recognized by Windows 10 (CP2102 Chipset). The "old" one a PL2303HX-Chipset wouldnt work in Windows 10. The TTL-cables are now outside the Master and the CP2102 is now connected with a USB-Extension-Cable to my PC Pi3 FIRMWARE_VERSION : 583860e6 BOARD_MODEL : ...
by guidol
Mon Jan 02, 2017 9:49 am
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

dp11 wrote:We currently don't make use of VPU and the 3 other arm cores.
Thats the point why the Pi3 isnt faster as the Zero....or as I read the Zero already is faster than the Pi3.
Less or faster switching inside the chip
by guidol
Mon Jan 02, 2017 9:47 am
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

Because this (and later) releases use the GPU for the time-critical tube handling code. Running the GPU at 400MHz (core_freq=400) gives a bit more timing margin when data is being read from the tube by the host. How long is your cable between the Pi and the Beeb? How are you powering the Pi 2? When...
by guidol
Sun Jan 01, 2017 6:22 pm
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

How hot it your Pi 3 getting? I think the boot message through the serial port include the temperature. So run it for a while, then power cycle it, and you should get the current temperature. I dont know how hot he did get, but the master's case would be much warmer as without Pi. The problem will ...
by guidol
Sun Jan 01, 2017 5:50 pm
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

So my config.txt will look like: # ====================================================== # Under clocking settings for Pi 3 # for less cpu/gpu-temperatur (inside the BBC Master) arm_freq=900 core_freq=350 # force_turbo for a uniform cpu-speed force_turbo=1 # =======================================...
by guidol
Sun Jan 01, 2017 5:16 pm
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

hoglet wrote: I was thinking of automatically including the git commit of the build in the startup message.
For me thats sounds like a very good idea =D>
If possible the startup message could include cpu/gpu-Frequence, No. of start-core or other entrys out of the config.txt [-o<
by guidol
Sun Jan 01, 2017 9:44 am
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

In the closed case of a BBC Master the Raspberry Pi3 gets warm. Whats your opinion hoglet - could it be a good idea to underclock the Raspberry Pi3 when using inside a BBC Master using Kjell's Master-inside converter? I do think about underclocking the Pi3 in the Range of a Pi2. So my config.txt wil...
by guidol
Sat Dec 31, 2016 12:15 pm
Forum: for sale / freebies
Topic: PiTubeDirect signalconverter for BBC Micro
Replies: 159
Views: 18220

Re: PiTubeDirect signalconverter for BBC Micro

Hi Kjell,

today the replacement for the Master-Converter did arrive :)
5 Minutes later I got it running... so Iam now also a happy "internal" PiTubeDirect-User :)
by guidol
Wed Dec 28, 2016 8:49 am
Forum: hardware
Topic: Inserting and removing ROMs
Replies: 17
Views: 1560

Re: Inserting and removing ROMs

My first insertion attempt resulted in me bending one of the legs off the new ADFS ROM. Whilst I wait for the replacement to arrive, please can anyone give me some simple advice about the best way to get ROMs in and out? For getting the Chip out of the Socket I will do it like Step 3 at the follwoi...
by guidol
Wed Dec 28, 2016 8:12 am
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1124
Views: 108737

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

Not finding a recipe elsewhere and having succeeded, I thought the steps that worked for me might be of interest. This follows the broad pattern described by J.G. Hartson here for getting a real Z80 co-pro up and running with the DataCentre. Thanks for pointing out the way to a solution to boot CP/...
by guidol
Sun Dec 25, 2016 5:33 pm
Forum: software: other
Topic: VT100/ANSI terminal emulation via OSWRCH
Replies: 131
Views: 8308

Re: VT100/ANSI terminal emulation via OSWRCH

But even if you don't end up using it, thanks for making me think about this aspect of STEM and improve it! Many Thanks for your work! - and its always good to make something better :) Thats programming with heart and soul :) Poor me - I have to wait for my serial cable....it will be in the post at...
by guidol
Thu Dec 22, 2016 6:07 pm
Forum: software: other
Topic: VT100/ANSI terminal emulation via OSWRCH
Replies: 131
Views: 8308

Re: VT100/ANSI terminal emulation via OSWRCH

I think it's fit to be released. Thats looks very nice :) What do you think is the best way to use STEM as/for a serial Terminal on a BBC? Is it possible to use STEM with the integrated TERM-ROM of the BBC or will another aret of terminal-programm better? TERM seems to use ANSI and STE; VT52/102. I...
by guidol
Tue Dec 20, 2016 5:42 pm
Forum: hardware
Topic: Futaba Low Profile Alternative?
Replies: 6
Views: 855

Re: Futaba Low Profile Alternative?

DigitalDunc wrote:Does anyone know of an alternative to the Futaba low profile key switch that doesn't need slightly drastic modifications to the keyboard of an Elk or beeb to fit?
Hmm. Retroclinic sells used/tested Futub low profile switches (eBay No 252669597287)...
by guidol
Tue Dec 20, 2016 3:11 pm
Forum: for sale / freebies
Topic: PiTubeDirect signalconverter for BBC Micro
Replies: 159
Views: 18220

Re: PiTubeDirect signalconverter for BBC Micro

I think, on the Zero at least, the LED is toggled for each Tube access, as a kind of activity light: https://github.com/hoglet67/PiTubeDirect/blob/8662441bf4df7db90a474e5d40fd3e8de755a5ed/src/tube-ula.c#L479 On my Pi3 it doenst seems to be toogled. On my Pi A+ only on a BREAK. Shouldnt it flicker m...
by guidol
Tue Dec 20, 2016 7:31 am
Forum: for sale / freebies
Topic: PiTubeDirect signalconverter for BBC Micro
Replies: 159
Views: 18220

Re: PiTubeDirect signalconverter for BBC Micro

When powering on using the sundby.com SD card the red LED on the Pi comes on, the green flashes once and then the red LED stays on. Is this expected? Thats normally on the P3, because the Kernel is under 1MB in size. The Kernel will be loaded (short flash on the green "Drive"-LED) and the rest will...
by guidol
Sun Dec 18, 2016 8:37 pm
Forum: for sale / freebies
Topic: PiTubeDirect signalconverter for BBC Micro
Replies: 159
Views: 18220

Re: PiTubeDirect signalconverter for BBC Micro

sundbyk wrote:
sirmorris wrote:Another happy customaster!
IMG_3040-small.jpg
Thanks Kjell!
Good to see that you got the card and it works.
Short Question: At your webpage and on his master-pcb the JP3-GNDProbe-Pins are connected... but not on my master-pcb.
Could JP3 be open?
by guidol
Sun Dec 18, 2016 10:40 am
Forum: for sale / freebies
Topic: PiTubeDirect signalconverter for BBC Micro
Replies: 159
Views: 18220

Re: PiTubeDirect signalconverter for BBC Micro

lazarusr wrote:SOLVED.
suggested splaying the pins apart on the male header so that they are a tighter fit and that seems to have solved the problem.
splaying in which direction....do you got a Link?
by guidol
Sun Dec 18, 2016 10:39 am
Forum: for sale / freebies
Topic: PiTubeDirect signalconverter for BBC Micro
Replies: 159
Views: 18220

Re: PiTubeDirect signalconverter for BBC Micro

Unfortunately, this doesn't work - my Master 128 doesn't see any Co-Pro. However, if I tilt the Pi back a little bit, like this, it does work So it seems that somehow there is a poor connection between the Pi and the PiTubeDirect. I am confident that it is neither the Pi Zero nor the male header (o...