Search found 335 matches

by tom_seddon
Sat Oct 12, 2019 12:54 am
Forum: software & utilities for the pc, mac or unix
Topic: Wires? Pah.....
Replies: 901
Views: 129139

Re: Wires? Pah.....

I used hoglet's routines from UPURSFS in the end, and BeebLink now has UPURS cable support: https://stardot.org.uk/forums/viewtopic.php?f=53&t=15605 (Max throughput is ~8.5 KBytes/sec - nowhere near as fast as the Tube serial adapter, but I'm still happy with the performance overall. The lack of see...
by tom_seddon
Sat Oct 12, 2019 12:14 am
Forum: projects
Topic: BeebLink
Replies: 53
Views: 3613

Re: BeebLink

On an experimental basis, BeebLink now supports the UPURS cable. Thanks to MartinB, hoglet and sweh for the UPURSFS transfer routines, and thanks to kieranhj for the loan of a cable. Throughput is not as good as when using the Tube serial adapter, but everything else works the same! UPURS support is...
by tom_seddon
Thu Oct 10, 2019 5:46 pm
Forum: hardware
Topic: HostFS+TCPIP
Replies: 45
Views: 1133

Re: HostFS+TCPIP

Sign me up for a board too! I'd like to add support for this to BeebLink. Not sure what the Beeb-side UI will look like yet, but I'll be having a think.

--Tom
by tom_seddon
Thu Oct 03, 2019 6:34 pm
Forum: emulators
Topic: Request for testers for quick but fascinating test case
Replies: 35
Views: 1203

Re: Request for testers for quick but fascinating test case

Master 128, VL68C45, CMD G65C22

Code: Select all

2 CYCLE STRETCH: 255
3 CYCLE STRETCH: 255
--Tom
by tom_seddon
Tue Sep 24, 2019 2:02 pm
Forum: software & utilities for the pc, mac or unix
Topic: Wires? Pah.....
Replies: 901
Views: 129139

Re: Wires? Pah.....

Can anybody comment on the licence for the UPURS read/write routines used in the UPURSFS ROM? (https://sweh.spuddy.org/Beeb/UPURSFS/) I'm hoping to use them in BeebLink, which is GPL v3 or (at your option) any later version. The readme has a note about the code maybe not being GPL v2 compliant, but ...
by tom_seddon
Mon Sep 23, 2019 1:43 pm
Forum: upcoming and recent events & exhibitions
Topic: Acorn World and ABUG meetup, Cambridge 20-22nd September 2019.
Replies: 249
Views: 9359

Re: Acorn World and ABUG meetup, Cambridge 20-22nd September 2019.

Completely forgot about this until just now: I ended up paying for somebody's fish and chips at the pub on Friday, as I was the last one to leave and they were a payment short. Does anybody remember leaving without paying?

--Tom
by tom_seddon
Thu Sep 19, 2019 11:05 pm
Forum: for sale / freebies
Topic: Cambridge ABUG Giveaway
Replies: 45
Views: 1971

Re: Cambridge ABUG Giveaway

Giveaway items list as promised! Unless noted: condition generally at least OK; tapes, disks and ROMs are entirely untested; all software BBC only; disks are 5.25". Boxed software: Go (Acornsoft) (box, disc, manual) Masterfile II (Beebugsoft) (box, disc, manual) (disc *VERIFY'd OK on my Master) Avia...
by tom_seddon
Thu Sep 19, 2019 10:45 pm
Forum: for sale / freebies
Topic: Cambridge ABUG Giveaway
Replies: 45
Views: 1971

Re: Cambridge ABUG Giveaway

I believe I have the actual plug-on Adaptor . . . Somewhere! If I find it, it's yours. Oops! - got over-excited and forgot that was just the book :lol: I'll take the book anyway, as I've a soft spot for the Psion Organiser II. And if the adapter ever turns up, I'll very gladly take it off your hand...
by tom_seddon
Wed Sep 18, 2019 12:25 pm
Forum: for sale / freebies
Topic: Cambridge ABUG Giveaway
Replies: 45
Views: 1971

Re: Cambridge ABUG Giveaway

If pre orders are a thing, the psion organiser comms link is of interest to me :)

Will have a rummage through some boxes and see if i can find any items for me to give away myself...

--Tom
by tom_seddon
Wed Sep 18, 2019 10:41 am
Forum: other vintage computer hardware, software and games
Topic: 27C400/800/160/320 emulator/ROM switcher
Replies: 17
Views: 631

Re: 27C400/800/160/320 emulator/ROM switcher

Ah, excellent - that actually sounds like a very convenient arrangement!

Will definitely get one of these. It'll be great to finally be able to get rid of View and Viewsheet.

--Tom
by tom_seddon
Tue Sep 17, 2019 11:05 pm
Forum: other vintage computer hardware, software and games
Topic: 27C400/800/160/320 emulator/ROM switcher
Replies: 17
Views: 631

Re: 27C400/800/160/320 emulator/ROM switcher

I assume the flying lead means an ordinary switch or button would also be an option for switching configuration? I use CTRL+BREAK quite a lot when using the Beeb, and I'm not sure I want it doing an OS switch each time :)

--Tom
by tom_seddon
Tue Sep 17, 2019 8:53 pm
Forum: hardware
Topic: Master very poor video output
Replies: 6
Views: 459

Re: Master very poor video output

I can (finally) confirm that B (HD6845) + SCART + my supermarket TV = decent quality output.

Hopefully I'll get to try more combinations at some point, but I'm going to blame the VL6845 for now.

--Tom
by tom_seddon
Mon Sep 16, 2019 10:19 pm
Forum: for sale / freebies
Topic: Cambridge ABUG Giveaway
Replies: 45
Views: 1971

Re: Cambridge ABUG Giveaway

I'll take the plinth!

--Tom
by tom_seddon
Sun Sep 15, 2019 3:11 pm
Forum: hardware
Topic: CRTC timing with 2MHz clock
Replies: 15
Views: 493

Re: CRTC timing with 2MHz clock

I'd always thought it was just the high clock period (T...U here) that got stretched, as per Matt's jsbeeb article: https://xania.org/201405/jsbeeb-getting-the-timings-right-cpu - but this diagram appears to show the low clock period stretched too! Unfortunately I don't have the skills to figure out...
by tom_seddon
Sun Sep 08, 2019 12:07 am
Forum: hardware
Topic: Last Gasp for the 8271
Replies: 25
Views: 1451

Re: Last Gasp for the 8271

Any ideas on a ballpark price for the full upgrade kit? I might be a bit price sensitive, as I've already got an Opus Challenger for my (otherwise tape only) B, so I've got disc access covered. I would quite like an 8271 though... it would come in handy for testing when/if I finally get round to add...
by tom_seddon
Sat Sep 07, 2019 1:59 pm
Forum: software: classic games
Topic: Stryker's Run
Replies: 9
Views: 587

Re: Stryker's Run

I've got a 5.25" disc of the original release. Are you wanting to buy? Do you want something checking?

--Tom
by tom_seddon
Fri Sep 06, 2019 11:32 pm
Forum: programming
Topic: Determining Graphics Modes
Replies: 6
Views: 341

Re: Determining Graphics Modes

$0355 is one of the VDU variables, which you can query using osbyte $a0. And on B+/M128, shadow RAM state is bit 4 of the VDU status byte, which you can query using osbyte $75. I assume that bit of the VDU status byte is always clear on the B? - might be worth checking the system type with osbyte $0...
by tom_seddon
Fri Sep 06, 2019 11:14 am
Forum: other vintage computer hardware, software and games
Topic: 27C400/800/160/320 emulator/ROM switcher
Replies: 17
Views: 631

Re: 27C400/800/160/320 emulator/ROM switcher

What's the programming procedure? Can it be reprogrammed in situ?

I'd be very interested in a straightforwardly re-programmable mega rom replacement!

--Tom
by tom_seddon
Thu Sep 05, 2019 9:57 pm
Forum: emulators
Topic: BBC B hardware mapping extent -- quick tests!
Replies: 15
Views: 458

Re: BBC B hardware mapping extent -- quick tests!

Note also the inputs to IC23 which determine which of the 32 byte blocks of SHEILA get cycle stretched access! On that subject, a previous thread that ended up on the subject of cycle stretching: https://stardot.org.uk/forums/viewtopic.php?f=4&t=16114 - includes accurate info for B, B+ and Master 1...
by tom_seddon
Wed Sep 04, 2019 9:57 pm
Forum: emulators
Topic: BBC B hardware mapping extent -- quick tests!
Replies: 15
Views: 458

Re: BBC B hardware mapping extent -- quick tests!

I've got boobip sideways RAM and EEPROM modules in my B, which is otherwise unexpanded (without even a disc interface) - but I unplugged one of the leads for the ROMSEL test, hopefully disabling them sufficiently. As it happened, the results were the same with or without. I've got BASIC in its origi...
by tom_seddon
Wed Sep 04, 2019 9:07 pm
Forum: programming
Topic: Row multiplication table substitution
Replies: 13
Views: 396

Re: Row multiplication table substitution

Previous thread, that you may already have seen, with some Master 128 compatibility stuff: viewtopic.php?f=1&t=6040&p=169033

--Tom
by tom_seddon
Tue Aug 27, 2019 10:58 pm
Forum: projects
Topic: Castle Defender -> Atari conversion
Replies: 41
Views: 3864

Re: Castle Defender -> Atari conversion

Enjoyed the write up - thanks for posting the link!

—Tom
by tom_seddon
Sat Aug 24, 2019 1:27 pm
Forum: for sale / freebies
Topic: Freebies for collection at ABUG Sep 2019
Replies: 10
Views: 543

Re: Freebies for collection at ABUG Sep 2019

tom_seddon wrote:
Fri Aug 23, 2019 9:59 pm
If anybody would like a Repton Infinity manual, I can bring one along that you're very welcome to have.
The Repton Infinity manual has been claimed!

--Tom
by tom_seddon
Fri Aug 23, 2019 9:59 pm
Forum: for sale / freebies
Topic: Freebies for collection at ABUG Sep 2019
Replies: 10
Views: 543

Re: Freebies for collection at ABUG Sep 2019

If anybody would like a Repton Infinity manual, I can bring one along that you're very welcome to have.

Condition is good, with a few fold marks on the cover. Pages and staples all present and correct. It was a bit tidier when new, but you won't be ashamed to have this item on your desk.

--Tom
by tom_seddon
Wed Aug 21, 2019 9:45 pm
Forum: hardware
Topic: Having difficulty with TurboSPI
Replies: 16
Views: 652

Re: Having difficulty with TurboSPI

Yes, Stunt Car Racer is careful to only trample on the 4K of HAZEL between $c900 and $d8ff - this area appears to be used for open file buffers in ADFS, and in DFS it's open file buffers or spare space. (Everything else in HAZEL, and the filing system zero page, is either avoided, or saved/restored ...
by tom_seddon
Wed Aug 21, 2019 6:40 pm
Forum: programming
Topic: Detecting available file systems
Replies: 17
Views: 853

Re: Detecting available file systems

for some reason the 8 bit filling systems never seem to have a timeout and will just sit waiting forever. Actually, that's something I've never really thought about. If you send the 8271 a command when there's no disk in the drive, will it return an error result, or will it just stall and wait for ...
by tom_seddon
Wed Aug 21, 2019 11:38 am
Forum: programming
Topic: Detecting available file systems
Replies: 17
Views: 853

Re: Detecting available file systems

Don't think so, at least not with os routines - for some reason the 8 bit filling systems never seem to have a timeout and will just sit waiting forever.

On the plus side, this gives you plenty of time to insert the disc.

--Tom
by tom_seddon
Mon Aug 19, 2019 8:50 pm
Forum: emulators
Topic: Emulation tests
Replies: 13
Views: 636

Re: Emulation tests

Yes, exactly - OSWRCH is good because (a) judging by the tests people have produced so far, you'll almost certainly be printing the results out with PRINT, because it's handy when iterating, and (b) it's very easy to trap OSWRCH output using *SPOOL. (And I think having explicit *SPOOL is good, becau...
by tom_seddon
Mon Aug 19, 2019 11:43 am
Forum: programming
Topic: Detecting available file systems
Replies: 17
Views: 853

Re: Detecting available file systems

It's probably easiest to attempt to select the fs by its number using the rom service call, and then use osargs to see if the fs of interest was actually selected (in which case you know it's available). You could have problems with ADFS trying to mount drive 0 though, i suppose... In general (but w...