Search found 44 matches

by mlouka
Thu Apr 05, 2018 6:30 pm
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1036
Views: 88417

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

I just saw this Bare Metal serial terminal project and thought it may be of use as a base for an acorn project (including a long side the Pi Copro): https://github.com/fbergama/pigfx Interesting -- it uses uspi for USB-support and that project seems to be making interesting progress on bare metal s...
by mlouka
Wed Apr 04, 2018 4:53 pm
Forum: hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1036
Views: 88417

Temp20180404

In case others will find this useful, this is my little cheat sheet for the FX calls. Print it out at 100%, cut it to size, then leave it on top of your beeb for easy access.
by mlouka
Fri Mar 30, 2018 9:02 pm
Forum: software: new games
Topic: Prince of Persia
Replies: 105
Views: 3357

Re: Prince of Persia

Amazing work -- well done!
by mlouka
Tue Mar 13, 2018 7:13 pm
Forum: hardware
Topic: Model B Fault finding help please :)
Replies: 43
Views: 1102

Re: Model B Fault finding help please :)

Have you tried swapping the keyboards (with the ribbon cable) to rule out a faulty ribbon cable (or poor connection) as that can result in some weird I/O related behaviour.
by mlouka
Sat Mar 10, 2018 1:07 pm
Forum: hardware
Topic: Acorn's Second Processors and the Tube - what, and why
Replies: 47
Views: 2735

Re: Acorn's Second Processors and the Tube - what, and why

the tube ula and the emulated second processor is all written in assembly lang? Maybe I read this question differently to everyone else since nobody commented on it, but the emulated second processor (e.g. Z80, 80x86,..) does not "all" need to be written in assembly, so existing emulators...
by mlouka
Mon Mar 05, 2018 6:28 pm
Forum: for sale / freebies
Topic: PiTubeDirect signalconverter for BBC Micro
Replies: 109
Views: 9960

Re: PiTubeDirect signalconverter for BBC Micro

alienkidmj12 wrote:I'd love one of these for my master, any details?

http://www.sundby.com/index.php/product/pitubedirect-signal-converter-2/
by mlouka
Mon Feb 05, 2018 8:57 pm
Forum: programming
Topic: Kevin Edwards assembler series in Micro User
Replies: 11
Views: 1495

Re: Kevin Edwards assembler series in Micro User

Nice -- thanks for taking the time to do that!
by mlouka
Sun Jan 14, 2018 4:24 pm
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 120
Views: 4843

Re: SpectROM - Speccy emulator for the Pi co-pro

RobC wrote:It's a lot of fun running a Spectrum on my Beeb but I'd forgotten just how many keywords were crammed onto the keys and it's really hard when the keys only have the letters on them.


When trying out your ZX81 emulator, I ended up using a real ZX81 as a "keystrip"! :P

Michael
by mlouka
Sat Jan 13, 2018 3:35 pm
Forum: for sale / freebies
Topic: PiTubeDirect signalconverter for BBC Micro
Replies: 109
Views: 9960

Re: PiTubeDirect signalconverter for BBC Micro

Not sure if he has had time to read your question as he’s busy putting the new cards together, which I guess answers your question ;).
by mlouka
Fri Jan 12, 2018 10:40 pm
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 120
Views: 4843

Re: SpectROM - Speccy emulator for the Pi co-pro

Thanks for the reply and the link. Will check it out.
by mlouka
Fri Jan 12, 2018 9:57 pm
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 120
Views: 4843

Re: SpectROM - Speccy emulator for the Pi co-pro

Very nice. Will this require the VideoNuLA or will it run without with “interesting” colours? I’m also a little curious about how you are doing this. I guess you are using gcc to cross-compile to ARM from Linux (or are compiling on a Pi running Linux?) but what C library are you linking with to run ...
by mlouka
Sun Jan 07, 2018 6:36 pm
Forum: hardware
Topic: MMFS Development and Support
Replies: 737
Views: 43378

Re: MMFS Development and Support

Thanks, will test.

Michael.
by mlouka
Sun Jan 07, 2018 4:50 pm
Forum: archive requests
Topic: Tubelink EXROM and UTILRAM
Replies: 20
Views: 616

Re: Tubelink EXROM and UTILRAM

crj wrote:*CODE was definitely there in OS 1.20 . I remember it fondly from my earliest attempts at hacking 6502 assembler, before I had sideways RAM and could do things properly. (-8

I'm pretty sure it wasn't in OS 0.10, but have no idea whether or not it was in OS 1.00 .



:D
by mlouka
Sat Jan 06, 2018 9:46 pm
Forum: archive requests
Topic: Tubelink EXROM and UTILRAM
Replies: 20
Views: 616

Re: Tubelink EXROM and UTILRAM

That's because *CO. matches *CODE in the MOS as the MOS is checked before any sideways ROMs are checked. If you really really want to embed abbreviations in code you should only abbreviate it to such an extent where it still makes sense in English, ie *Config. *Desk. *Del. not *co. *des. *de. Stric...
by mlouka
Sat Jan 06, 2018 8:50 pm
Forum: hardware
Topic: MMFS Development and Support
Replies: 737
Views: 43378

Re: MMFS Development and Support

Could an "own file system variant" be implemented as a build-variant of MMFS like your E, M, T, U variants? In theory, it would be really useful for file management and archiving work even if some games break when booting from it. The "DFS emulating" version could still be used ...
by mlouka
Sat Jan 06, 2018 8:47 pm
Forum: hardware
Topic: MMFS Development and Support
Replies: 737
Views: 43378

Re: MMFS Development and Support

I am starting to wonder if MMFS should have it's own file system number and handle range: http://mdfs.net/Docs/Comp/BBC/Filing/FSNums http://mdfs.net/Docs/Comp/BBC/Filing/Handles This would allow it to co-exist with DFS, and in the Master (or a B with MER) files could be copied between the two. Cou...
by mlouka
Sat Jan 06, 2018 4:14 pm
Forum: hardware
Topic: MMFS Development and Support
Replies: 737
Views: 43378

Re: MMFS Development and Support

Can you post a screen shot showing an example command and the exact error please? Also can you list the ROMs you have in your Beeb, and the slots they are in. Thanks, Dave. Am currently out of the house but will check a little when I get home and see if I can reproduce it in BeebEm. When attempting...
by mlouka
Sat Jan 06, 2018 2:41 pm
Forum: hardware
Topic: MMFS Development and Support
Replies: 737
Views: 43378

Re: MMFS Development and Support

Not sure if this is by design or accident, but the Master Emulator ROM and MMFS do not work as expected when MMFS is the active file system. The emulated MOS commands that use the DFS, such as SRLOAD, give ""Bad filing system name" with MMFS.' On the same beeb, TurboMMC and a "re...
by mlouka
Sat Jan 06, 2018 2:06 pm
Forum: archive requests
Topic: Tubelink EXROM and UTILRAM
Replies: 20
Views: 616

Re: Tubelink EXROM and UTILRAM

Only negative with it is that it (surprisingly) doesn't accept *ST. or *CO. shortcuts for STATUS and CONFIGURE A little further testing reveals that UTILRAM supports *ST. as a shortcut but not *CO. Just tried it in BeebEM with all there ROMS removed just to make sure that it wasn't because some oth...
by mlouka
Sat Jan 06, 2018 1:46 pm
Forum: archive requests
Topic: Tubelink EXROM and UTILRAM
Replies: 20
Views: 616

Re: Tubelink EXROM and UTILRAM

Luckily was readable :) (tracks 10 onwards were unformatted!) Thanks -- seems to run ok on in BeebEm so will be interesting to try it on a real beeb with 2nd processor this evening. Michael. Back on topic: UTILRAM seems to work for what it does, although EXROM is the most interesting of these two t...
by mlouka
Sat Jan 06, 2018 1:44 pm
Forum: archive requests
Topic: Tubelink EXROM and UTILRAM
Replies: 20
Views: 616

Re: Tubelink EXROM and UTILRAM

With MMFS and the Master Emulator ROM, using commands that access the DFS (e.g. SRLOAD) gives an error message about invalid/unknown file system. So MMFS is trampling on DFS's workspace? Have you confirmed that by disabling/removing MMFS? . Did a little extra testing now and it appears to be specif...
by mlouka
Fri Jan 05, 2018 8:58 am
Forum: archive requests
Topic: Tubelink EXROM and UTILRAM
Replies: 20
Views: 616

Re: Tubelink EXROM and UTILRAM

billcarr2005 wrote:Luckily was readable :) (tracks 10 onwards were unformatted!)


Thanks -- seems to run ok on in BeebEm so will be interesting to try it on a real beeb with 2nd processor this evening.

Michael.
by mlouka
Fri Jan 05, 2018 12:12 am
Forum: archive requests
Topic: Tubelink EXROM and UTILRAM
Replies: 20
Views: 616

Re: Tubelink EXROM and UTILRAM

Anyone got EXROM or UTILRAM from Tubelink? Both were supplied on disk in 1987... Thought I recognised "Tubelink", so had a quick check and I've got UTILRAM... whether the disk is readable is another matter :P I'll attempt to transfer it at the nearest available opportunity, or sooner if p...
by mlouka
Fri Jan 05, 2018 12:10 am
Forum: archive requests
Topic: Tubelink EXROM and UTILRAM
Replies: 20
Views: 616

Re: Tubelink EXROM and UTILRAM

Thanks for the responses so far.

A couple of replies:
No, Advanced RAM Utilities is a different product.

With MMFS and the Master Emulator ROM, using commands that access the DFS (e.g. SRLOAD) gives an error message about invalid/unknown file system.
by mlouka
Thu Jan 04, 2018 8:45 pm
Forum: archive requests
Topic: Tubelink EXROM and UTILRAM
Replies: 20
Views: 616

Tubelink EXROM and UTILRAM

Anyone got EXROM or UTILRAM from Tubelink? Both were supplied on disk in 1987 and could be loaded into sideways ram. EXMON was also available as an EPROM. See for example the ad here: http://mdfs.net/Software/BBCBasic/BBC/AdvBasic/Tubelink.txt or on page 182 here https://archive.org/details/AcornUse...
by mlouka
Fri Dec 15, 2017 9:43 pm
Forum: archive requests
Topic: BOS ROM for PMS B2P
Replies: 13
Views: 944

Re: BOS ROM for PMS B2P

Images of the inside of the second processor. Note that there are no components on the back of the circuit board.
by mlouka
Thu Dec 14, 2017 10:03 pm
Forum: archive requests
Topic: BOS ROM for PMS B2P
Replies: 13
Views: 944

Re: BOS ROM for PMS B2P

I just checked the manual and according to that, there was no system disc. Yeah, I saw that in the manual. I was referring to http://chrisacorns.computinghistory.org.uk/docs/PMS/PMS_B2PSystemDiscs.pdf, but it doesn't actually say what's on the discs. Interesting, I have no idea what might have been...
by mlouka
Thu Dec 14, 2017 9:41 pm
Forum: archive requests
Topic: BOS ROM for PMS B2P
Replies: 13
Views: 944

Re: BOS ROM for PMS B2P

This is the last page off the B2P manual that Pernod referred to: "EXTREMELY TECHNICAL SECTION. This is the bit where we attempt to tell you how our B2P works. The B2P does not have a fancy, expensive ULA chip, but instead simulates the TUBE hardware protocols through some discrete components, ...
by mlouka
Thu Dec 14, 2017 10:35 am
Forum: archive requests
Topic: BOS ROM for PMS B2P
Replies: 13
Views: 944

Re: BOS ROM for PMS B2P

Thanks, do you also have the system disc that came with it? ‘fraid not. Just the device, rom and manual. I just checked the manual and according to that, there was no system disc. "Chapter 1.1 Checklist of Items" states: "As well as this User Guide, you should have the follwing items...
by mlouka
Wed Dec 13, 2017 11:13 pm
Forum: archive requests
Topic: BOS ROM for PMS B2P
Replies: 13
Views: 944

Re: BOS ROM for PMS B2P

Pernod wrote:Thanks, do you also have the system disc that came with it?


‘fraid not. Just the device, rom and manual.