Search found 2358 matches

by Elminster
Wed Jul 18, 2018 10:55 am
Forum: for sale / freebies
Topic: Worth Taking a Look At
Replies: 2645
Views: 218162

Re: Worth Taking a Look At

Only 35 years or so left to wait.
by Elminster
Wed Jul 18, 2018 10:53 am
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 199
Views: 7246

Re: RGB to HDMI using a Pi Zero and a small CPLD

Will watch out for it. I will use a pi zero (dont hav any W's) have around 6 or so I can borrow, and some point will by a dedicated one. Would using a 3b+ provide any advantage, ignoring the larger form factor etc. I wounder if would be possible to do a zero, version for internal fitting, and a £b+ ...
by Elminster
Wed Jul 18, 2018 8:42 am
Forum: emulators
Topic: B-Em
Replies: 375
Views: 21821

Re: B-Em

Sure you dont need a post Freewifi project? I am only thinking of your mental wellbeing of course.

I think when I started my retro todo list everything was latest tech #-o
by Elminster
Tue Jul 17, 2018 10:07 pm
Forum: hardware
Topic: EUPURS and AP5 Cable(s)
Replies: 57
Views: 578

Re: EUPURS and AP5 Cable(s)

Handshaking did seem to be working, as far as I could tell. That’s where I was in the early days with my non-FTDI adaptors until I looked more closely with a scope..... Not the end of the world. Could still get a real one. I thought someone would have put up a kicad design of a FTDI chip with usb h...
by Elminster
Tue Jul 17, 2018 9:05 pm
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 199
Views: 7246

Re: RGB to HDMI using a Pi Zero and a small CPLD

Looking good. Was there anything particular you want people to try or test? A script if you will. Or just let us loose?
by Elminster
Tue Jul 17, 2018 9:04 pm
Forum: hardware
Topic: I2C 4 U
Replies: 169
Views: 12120

Re: I2C 4 U

Tut tut, not following the programming guide lines to work with tube. As punishment you must invent two thing before sunrise.

Reminds me, when looked at i2c did you also look at spi devices?
by Elminster
Tue Jul 17, 2018 9:01 pm
Forum: emulators
Topic: B-Em
Replies: 375
Views: 21821

Re: B-Em

I have a feature request of putting Sprow Master Ethernet into b-em, but I know if I ask someone will say, ‘fork, get coding, merge patch’.
by Elminster
Tue Jul 17, 2018 8:56 pm
Forum: hardware
Topic: EUPURS and AP5 Cable(s)
Replies: 57
Views: 578

Re: EUPURS and AP5 Cable(s)

Unclear at present. I need to do same test on original user port cable. Also supply better power source, shorter jump leads etc.. But first fix Electron.

Handshaking did seem to be working, as far as I could tell.
by Elminster
Tue Jul 17, 2018 8:54 pm
Forum: hardware
Topic: Advice on internal Datacentre 1MHz bus cable installation?
Replies: 20
Views: 682

Re: Advice on internal Datacentre 1MHz bus cable installation?

Ah, so he has. Funny, you don't have to do that on a Beeb. Are they that much different in the tolerances? Ed...... :-) Not sure. Need to get a Beeb out of storage to fit a 177x disk kit i bought about 4 years ago at somepoint this week. Will have a look. But there is no gap on master, not on mine ...
by Elminster
Tue Jul 17, 2018 4:37 pm
Forum: hardware
Topic: Advice on internal Datacentre 1MHz bus cable installation?
Replies: 20
Views: 682

Re: Advice on internal Datacentre 1MHz bus cable installation?

I am sure people were routing cables internal on Beeb in ye olde days, so not sure why when Acorn followed with master they made it harder. Maybe because with all the extra internal expansion and cart slots on master they thought people wouldn’t do it any more.
by Elminster
Tue Jul 17, 2018 3:55 pm
Forum: hardware
Topic: Advice on internal Datacentre 1MHz bus cable installation?
Replies: 20
Views: 682

Re: Advice on internal Datacentre 1MHz bus cable installation?

Ah, so he has. Funny, you don't have to do that on a Beeb. Are they that much different in the tolerances? Ed...... :-) Not sure. Need to get a Beeb out of storage to fit a 177x disk kit i bought about 4 years ago at somepoint this week. Will have a look. But there is no gap on master, not on mine ...
by Elminster
Tue Jul 17, 2018 3:23 pm
Forum: hardware
Topic: I2C 4 U
Replies: 169
Views: 12120

Re: I2C 4 U

Hey, not at all! - if you have a solution underway then by all means take the lead and I'll stand easy! :D What I'd like to do is, assuming an RTC is present with some E 2 , is move many of the RAMagic! features across to the I2C rom. So, be my guest - I'll watch and wait with interest.... 8) I don...
by Elminster
Tue Jul 17, 2018 3:13 pm
Forum: hardware
Topic: EUPURS and AP5 Cable(s)
Replies: 57
Views: 578

Re: EUPURS and AP5 Cable(s)

Maybe. But I use this one all the time with other TTL serial stuff without issue (same jumper wires as well come to think of it), but obviously I dont usually put it through a max3232. Likewise (although it did need an extra pullup on the FreeFi232) - but upurs was/is (afaik) particularly persnicke...
by Elminster
Tue Jul 17, 2018 2:59 pm
Forum: hardware
Topic: EUPURS and AP5 Cable(s)
Replies: 57
Views: 578

Re: EUPURS and AP5 Cable(s)

Seem to have broken Electron anyway, wonder if the EEPROM has got corrupted, was lcoked so shouldnt have. Just hangs on boot now. Uploading Workign Mac CoolTerm settings for reference.
by Elminster
Tue Jul 17, 2018 2:43 pm
Forum: hardware
Topic: EUPURS and AP5 Cable(s)
Replies: 57
Views: 578

Re: EUPURS and AP5 Cable(s)

Experience suggests those cheap ftdi boards don't use real ftdi chips... The signal out of mine (I have 3) isn't too clean... Maybe. But I use this one all the time with other TTL serial stuff without issue (same jumper wires as well come to think of it), but obviously I dont usually put it through...
by Elminster
Tue Jul 17, 2018 2:01 pm
Forum: hardware
Topic: EUPURS and AP5 Cable(s)
Replies: 57
Views: 578

Re: EUPURS and AP5 Cable(s)

It all works in theory but generally things get corrupted just enough that the result isnt usable. I suspect that is todo with the 4 inch jumpers between ftdi and max3232 and then 4inch jumpers between max3232 and AP5 header. One would expect the TTL bit would be less reliable than the RS232 bit.
by Elminster
Tue Jul 17, 2018 12:11 pm
Forum: hardware
Topic: Advice on internal Datacentre 1MHz bus cable installation?
Replies: 20
Views: 682

Re: Advice on internal Datacentre 1MHz bus cable installation?

It will become quite clear how to do it for the cable. You don't need to cut any holes to make this work. For the USB port, yes, pm a Master, some small cutting. That should be visible also on some of Mark's pictures. If you scroll up a bit you can see a picture of the DC connected to a master by M...
by Elminster
Tue Jul 17, 2018 12:07 pm
Forum: software: games - high scores
Topic: Season 10 Game Nominations
Replies: 10
Views: 161

Re: Season 10 Game Nominations

Had already added a modern tricky alternative. In case people didn’t go with my suggest that we play it and I automatically win. Or ask Kieran to tweak it and add a score !
by Elminster
Tue Jul 17, 2018 11:03 am
Forum: hardware
Topic: EUPURS and AP5 Cable(s)
Replies: 57
Views: 578

Re: EUPURS and AP5 Cable(s)

Being [Edit: On no there is a being in my mind] in mind that the max3232 can do 120kbps if a custom cable for UPURS was created using the max3237 could you increase the rate or is the bottle neck the Electron/Beeb? 'The MAX3237 is guaranteed to run at data rates of 250kbps in the normal operating mo...
by Elminster
Tue Jul 17, 2018 10:40 am
Forum: hardware
Topic: EUPURS and AP5 Cable(s)
Replies: 57
Views: 578

Re: EUPURS and AP5 Cable(s)

Success. Seems to be working both ways using pin header, a standard TTL FTDI Serial device (running through a max3232) and hooked up to a Mac. Sent files and ROMS to mac. And created an SSD on Mac. I havent really tested the validaty of what is going where, but at least the right bits of wire seem t...
by Elminster
Tue Jul 17, 2018 9:24 am
Forum: software: games - high scores
Topic: Season 10 Game Nominations
Replies: 10
Views: 161

Re: Season 10 Game Nominations

FourthStone wrote:
Tue Jul 17, 2018 8:49 am
Would love to play through POP but is there a way to compare scores?
Good point. We could just say I win.

Edit: I will add an alternative
by Elminster
Tue Jul 17, 2018 8:48 am
Forum: hardware
Topic: EUPURS and AP5 Cable(s)
Replies: 57
Views: 578

Re: EUPURS and AP5 Cable(s)

I had some success using the max3232 board. I can transmit form Electron to Mac (if I cheat and ground RTS) the other doesn't. Electron moans no rX data. All looks connected correctly, so I think I shall break out scope to see if what I think it should be doing it is.
by Elminster
Tue Jul 17, 2018 8:37 am
Forum: hardware
Topic: I2C 4 U
Replies: 169
Views: 12120

Re: I2C 4 U

Way of the exploding battery. Ouch.

edit: that post above, near the end, links back to a blog post which is pretty interesting as well. Namely https://thecavepearlproject.org/2014/05 ... from-ebay/
by Elminster
Tue Jul 17, 2018 8:36 am
Forum: software: games - high scores
Topic: Season 10 Game Nominations
Replies: 10
Views: 161

Re: Season 10 Game Nominations

Can we choose new old? E.g. Prince of Persia http://www.bbcmicro.co.uk/game.php?id=2843 [Edit: Forgot you dont get a score, alternative is a 'Tricky' modern game, Phoenix http://www.bbcmicro.co.uk/game.php?id=2719] Bubble Bobble http://www.bbcmicro.co.uk/game.php?id=1874 Arc Pinball http://www.bbcmi...
by Elminster
Mon Jul 16, 2018 6:29 pm
Forum: introduce yourself
Topic: Hello!
Replies: 13
Views: 165

Re: Hello!

Welcome. New music tracks eagerly anticipated now.
by Elminster
Mon Jul 16, 2018 4:59 pm
Forum: hardware
Topic: 2nd User port for Beeb?
Replies: 96
Views: 6187

Re: 2nd User port for Beeb?

1024MAK wrote:
Mon Jul 16, 2018 2:54 pm
It's possible to use a 74LS138 (or a 74HCT138) in place of the 74LS42 in position IC4, but the pin-outs are different.

Mark
Pretty sure I have some of those. I may not need to buy anything then. Just find some time.
by Elminster
Mon Jul 16, 2018 4:59 pm
Forum: hardware
Topic: 2nd User port for Beeb?
Replies: 96
Views: 6187

Re: 2nd User port for Beeb?

Not for me as I don’t use Mmc, but might for others.

I was more interested in using upurs and leaving main user port free. The other extra user is just a bonus.
by Elminster
Mon Jul 16, 2018 2:33 pm
Forum: hardware
Topic: 2nd User port for Beeb?
Replies: 96
Views: 6187

Re: 2nd User port for Beeb?

MartinB wrote:
Mon Jul 16, 2018 2:31 pm
but it significantly pre-dates the second user port and the latter technically conflicts
Or, more likely, you are a time lord.
by Elminster
Mon Jul 16, 2018 1:52 pm
Forum: hardware
Topic: 2nd User port for Beeb?
Replies: 96
Views: 6187

Re: 2nd User port for Beeb?

MartinB wrote:
Mon Jul 16, 2018 1:46 pm
Stephen wrote:Not sure what addresses BeebSID are used at. As long as they don't conflict then they can both be used at the same time.
BeebSID occupies $FC20 - $FC3C
That sounds almost by design. One following on from the other.
by Elminster
Mon Jul 16, 2018 1:13 pm
Forum: introduce yourself
Topic: Atom Owner from Smalltown, Canada
Replies: 14
Views: 166

Re: Atom Owner from Smalltown, Canada

Welcome. I should think an Atom owner in Canada is a a pretty exclusive club in an already exclusive club. There are a few other users from Canada floating around here, you might want to hook up with them on one of their meets.