Search found 4963 matches

by MartinB
Sun Oct 21, 2018 5:47 pm
Forum: software & utilities for the pc, mac or unix
Topic: Wires? Pah.....
Replies: 852
Views: 111536

Re: Wires? Pah.....

I've only just been saying that I was going to fix a few niggles in 5.1 so this will give me some compelling motivation to issue an update sooner rather than later. Apart from today's transfer bug that I've yet to diagnose, there's an error reported by Colin Mcd in the UPLOAD assist dialogue where i...
by MartinB
Sun Oct 21, 2018 3:46 pm
Forum: software & utilities for the pc, mac or unix
Topic: Wires? Pah.....
Replies: 852
Views: 111536

Re: Wires? Pah.....

Stop looking Martin - I've reproduced it under Windows! I don't know why its happening yet, I won't get chance to investigate until later but I do understand why I was getting confused though and that's because of the extended (padded) ssd I posted last night. That test image does transfer ok and th...
by MartinB
Sun Oct 21, 2018 1:39 pm
Forum: software & utilities for the pc, mac or unix
Topic: Wires? Pah.....
Replies: 852
Views: 111536

Re: Wires? Pah.....

SO, assuming that there is nothing wrong with UPURS itself (totally happy to accept that, given this has been working for years before I came along), I now need to work out if it is on my Master side, my Mac side or in between (my cable). Well, I'll still have a look tonight but I use UPURS all the...
by MartinB
Sun Oct 21, 2018 11:27 am
Forum: software: new games
Topic: New version of Scramble for the beeb (going well)
Replies: 138
Views: 7214

Re: New version of Scramble for the beeb (going well)

Hey, what are you saying about my coding! :lol: Ha! No room to talk on my part! I’m a self-confessed pathological location-trampler so I was just getting in first....😇 I’ll give RC5 a whirl later 👍 ( ...and there’s no need to thank me and t’other Martin for helping you to find these bugs... :lol: )
by MartinB
Sun Oct 21, 2018 11:13 am
Forum: software & utilities for the pc, mac or unix
Topic: Wires? Pah.....
Replies: 852
Views: 111536

Re: Wires? Pah.....

I think tricky has just fessed-up on the Scramble thread to a possible glitch which might well explain why we both experienced some crashing. I also therefore strongly suspect that your UPURS vs DC USB approach was perhaps a red herring but we’ll see how you get on with tricky’s RC5 build if you get...
by MartinB
Sun Oct 21, 2018 8:57 am
Forum: software: new games
Topic: New version of Scramble for the beeb (going well)
Replies: 138
Views: 7214

Re: New version of Scramble for the beeb (going well)

Do you get any flickering at the top of the screen, which would show my timing is off? No, no artefacts whatsoever - it's impressively rock-steady once running and plays absolutely fine. Do note that I'm only seeing the 'crash' very very rarely so this is something super-subtle - if it was me, I wo...
by MartinB
Sun Oct 21, 2018 8:27 am
Forum: software: new games
Topic: New version of Scramble for the beeb (going well)
Replies: 138
Views: 7214

Re: New version of Scramble for the beeb (going well)

I've been discussing this with Martin (guddler) in the UPURS thread and I'm happy that the ssd image is fine and that it is transferring to floppy correctly. On my Model B though, I'm also seeing random occasions when I just get a blank screen after pressing Return on the initial loading screen.
by MartinB
Sun Oct 21, 2018 8:10 am
Forum: software & utilities for the pc, mac or unix
Topic: Wires? Pah.....
Replies: 852
Views: 111536

Re: Wires? Pah.....

Would it not be more likely to be a marginal timing thing with the floppy drive write shutting off? But I feel like I’m talking out of my behind since I didn’t think that kind of thing entered into the equation!! Ohhh, hang on. There are config parameters for floppy drives on the master. I wonder i...
by MartinB
Sat Oct 20, 2018 11:24 pm
Forum: software & utilities for the pc, mac or unix
Topic: Wires? Pah.....
Replies: 852
Views: 111536

Re: Wires? Pah.....

Ok, I got home sooner than I thought so I’ve had a play since these things niggle me.... :| I downloaded Tricky’s original RC4, switched on the Beeb and fired it over to a floppy using UPURS. As Martin (guddler) noted, it’s super quick being only a short ssd so the whole process from Beeb on to <Shi...
by MartinB
Sat Oct 20, 2018 9:40 pm
Forum: software & utilities for the pc, mac or unix
Topic: Wires? Pah.....
Replies: 852
Views: 111536

Re: Wires? Pah.....

I can't try myself until tomorrow I'm afraid but the ssd is only very small being 18k so there's negligible transfer time, its literally just the overheads of writing about 8 tracks. Pending my trying the original and if you get time, have a go with the attached disc which is Tricky's real Beeb disc...
by MartinB
Fri Oct 19, 2018 10:33 pm
Forum: software & utilities for the pc, mac or unix
Topic: Wires? Pah.....
Replies: 852
Views: 111536

Re: Wires? Pah.....

Well done Martin =D> (you, not me).

Happy days.... :D


(Don't know what went wrong with Tronisoft btw, they're normally pretty good.)
by MartinB
Fri Oct 19, 2018 10:30 pm
Forum: hardware
Topic: I2C 4 U
Replies: 264
Views: 16034

Re: I2C 4 U

I'm just doing final tests of the first iteration of the I2C rom 'shiny features' and the first release is all about equipping your Beeb (and Elk!) with a properly integrated, battery-backed RTC. This upgrade is of course predicated on I2C so all you need is the subject rom, an inexpensive DS3231-ba...
by MartinB
Sun Oct 14, 2018 6:38 pm
Forum: software & utilities for the pc, mac or unix
Topic: Wires? Pah.....
Replies: 852
Views: 111536

Re: Wires? Pah.....

Of particular note is that RTS is permanently set on the PL2303 adapter. Until I have something to compare it to I don't know if this is abnormal or not. In two matched systems running at band-edge, then no, both RTS and CTS would be active. In the case of a Beeb vs a PC, when UPURS is transferring...
by MartinB
Sun Oct 14, 2018 1:48 pm
Forum: software & utilities for the pc, mac or unix
Topic: Wires? Pah.....
Replies: 852
Views: 111536

Re: Wires? Pah.....

Ok 👍

When you get more time then, no rush at all, if you could describe in a bit more detail any issues or queries you have then they can definitely be sorted or explained.
by MartinB
Sun Oct 14, 2018 1:17 pm
Forum: software & utilities for the pc, mac or unix
Topic: Wires? Pah.....
Replies: 852
Views: 111536

Re: Wires? Pah.....

I don't have anything Linux but my good friends from back in the UPURS development days always recommended Cutecom whose setup and use is fully described in the UPURS User Guide.
by MartinB
Sun Oct 14, 2018 10:34 am
Forum: software & utilities for the pc, mac or unix
Topic: Wires? Pah.....
Replies: 852
Views: 111536

Re: Wires? Pah.....

I don’t have a DC as I said but from reading the chatter, does DTRAP perhaps redirect OSWORD $7F to the DC virtual discs? That could be bahoolliocks of course....😶

(Prolific usually describes the number of errors you’ll get so ‘trusty’ or not, be sure to use the FTDI when it arrives... 8) )


.
by MartinB
Sun Oct 14, 2018 7:46 am
Forum: software & utilities for the pc, mac or unix
Topic: Wires? Pah.....
Replies: 852
Views: 111536

Re: Wires? Pah.....

if I try to upload an ssd either to RamFS or direct to dfs floppy I get ‘Write Error’. I don't have RamFS but the two key points here are (1) , in the case of real floppies, the destination disc must be pre-formatted under DFS and must be write-enabled (does formatting and WP apply to RamFS?) and (...
by MartinB
Thu Oct 11, 2018 11:25 am
Forum: hardware
Topic: EEPROM - the Holy Grail of Sideways Rom?
Replies: 397
Views: 36606

Re: EEPROM - the Holy Grail of Sideways Rom?

I really shouldn’t be spending at the moment but that’s so little I’ll get one ordered in. It is indeed only a little, but do note that the headline price is excluding VAT and postage so they do work out UK 1st Class delivered at just over a tenner. Still good value in my opinion though - they're g...
by MartinB
Wed Oct 10, 2018 10:11 pm
Forum: hardware
Topic: EEPROM - the Holy Grail of Sideways Rom?
Replies: 397
Views: 36606

Re: EEPROM - the Holy Grail of Sideways Rom?

Well done on the cart...! =D> 8) Personally, I did already know you are a Martin which is why I've retained your guddler handle in quotes where I usually use real names - it would have looked like I was quoting myself! http://www.tronisoft.com/shop/adaptors-connectors/usb-to-serial-rs232-ftdi/1-way-...
by MartinB
Wed Oct 10, 2018 8:39 pm
Forum: hardware
Topic: EEPROM - the Holy Grail of Sideways Rom?
Replies: 397
Views: 36606

Re: EEPROM - the Holy Grail of Sideways Rom?

No need for payment, I own FTDI - didn't you realise?
by MartinB
Wed Oct 10, 2018 8:25 pm
Forum: hardware
Topic: EEPROM - the Holy Grail of Sideways Rom?
Replies: 397
Views: 36606

Re: EEPROM - the Holy Grail of Sideways Rom?

No worries at all, I would have been forcing the time but prepared to do it in support of the cause.... :wink: Well, there's always one exception and that is that my USB2Serial is a prolific 2303 variant and I think I recall reading that you recommend the FTDI one? (All from memory so apologies if t...
by MartinB
Wed Oct 10, 2018 8:11 pm
Forum: hardware
Topic: EEPROM - the Holy Grail of Sideways Rom?
Replies: 397
Views: 36606

Re: EEPROM - the Holy Grail of Sideways Rom?

If you're keen on having UPURS, I could probably manage to find some bandwidth to build you a cable but I'd have to charge a few quid for the parts and time - certainly less than a tenner, but more than it would cost you to do it yourself! :wink: (I'd rather do that than lose a new user if you were ...
by MartinB
Wed Oct 10, 2018 5:49 pm
Forum: hardware
Topic: EEPROM - the Holy Grail of Sideways Rom?
Replies: 397
Views: 36606

Re: EEPROM - the Holy Grail of Sideways Rom?

guddler wrote:I have pin 1 of the EEPROM lifted out of the socket and connected to pin A16 of the cart (AA14) and that signal isolated from the 139.

Did you connect pin 2 of the 139 to ground too?

Capture.JPG
by MartinB
Wed Oct 10, 2018 11:47 am
Forum: hardware
Topic: EEPROM - the Holy Grail of Sideways Rom?
Replies: 397
Views: 36606

Re: EEPROM - the Holy Grail of Sideways Rom?

In the cartridge-mod that Dave just linked to, the schematic I show and work to is for the Acorn cartridge of the type you point to on Beebmaster's site. The physical example I show in the photos isn't a cream Acorn one but it does conform to that Acorn schematic and hence, the mod I describe will w...
by MartinB
Mon Oct 08, 2018 7:47 pm
Forum: hardware
Topic: Sideways ROM/RAM question
Replies: 5
Views: 149

Re: Sideways ROM/RAM question

It’s an artefact of the incomplete rom address decoding in a standard B. The machine is designed to be able to page-in up to 16 roms in total but as supplied, the hardware address decoding is only implemented for four roms so every ‘set’ of four appear four times as the rom lister polls each of the ...
by MartinB
Mon Oct 08, 2018 5:59 pm
Forum: hardware
Topic: AT28C256 SOFT Lock Issues with ARA III & ABR
Replies: 94
Views: 1223

Re: AT28C256 SOFT Lock Issues with ARA III & ABR

Ah, ok - understood 👍

Clearly, there still are subtle variations between differently sourced chips because all mine for example still work fine with my 4.2A release. However, it certainly doesn't hurt for you to tweak things further for maximum compatibility if you have the energy.... =D> 8)
by MartinB
Mon Oct 08, 2018 11:30 am
Forum: hardware
Topic: AT28C256 SOFT Lock Issues with ARA III & ABR
Replies: 94
Views: 1223

Re: AT28C256 SOFT Lock Issues with ARA III & ABR

...and is completely unrelated to the time delay I added to fix the corruption issue. I thought the time delay you recently added was to allow extra time for the unlock sequence to be accepted and actioned (?) since one of the two fixes in 4.2 was already to fix the first-byte corruption and that w...
by MartinB
Sun Oct 07, 2018 9:08 pm
Forum: hardware
Topic: AT28C256 SOFT Lock Issues with ARA III & ABR
Replies: 94
Views: 1223

Re: AT28C256 SOFT Lock Issues with ARA III & ABR

I don’t think it’s my code in the AP6 - I wrote all the MGC tools but none (that I’m aware of) for the AP6. I suspect the latter is JGH’s (and maybe others?) but not me.
by MartinB
Sun Oct 07, 2018 5:26 pm
Forum: hardware
Topic: AT28C256 SOFT Lock Issues with ARA III & ABR
Replies: 94
Views: 1223

Re: AT28C256 SOFT Lock Issues with ARA III & ABR

Hello Ken :)

Sorry, busy day! I have no problems whatsoever with your issuing an update to the EEPnn utilities and in case you didn't have the latest 4.2A sources, I've just emailed them over to you 8)
by MartinB
Sat Oct 06, 2018 6:20 am
Forum: hardware
Topic: AT28C256 SOFT Lock Issues with ARA III & ABR
Replies: 94
Views: 1223

Re: AT28C256 SOFT Lock Issues with ARA III & ABR

NUTS. I was looking forward to that too. Ah, but.... :- , on the same page 10 of that thread, I did post details of how to easily modify a Master cartridge to accept an AT28C256 and I even modified the eeprom programming method within EELOAD to suit the vagaries of the Master. Have a looky here.......