Search found 743 matches

by sirmorris
Wed Sep 12, 2018 9:39 am
Forum: software & utilities for the pc, mac or unix
Topic: Request for help in organising/releasing source code
Replies: 47
Views: 969

Re: Request for help in organising/releasing source code

+1 to that. Baby steps. Commit in what you have, as it is, and learn about how the system works. Especially branching. Branches don't cost anything and are perfect for experimenting. Keep master clean/working at all times. Work in a branch until it's looking how you want it to then merge that back t...
by sirmorris
Sat Aug 04, 2018 5:27 pm
Forum: hardware
Topic: Z80 Protocol Decoder
Replies: 194
Views: 3899

Re: Z80 Protocol Decoder

This is very exciting. If I wasn't so busy I'd be looking for my LCSoft board right now. I'll be happy to help out with traces for other machines but it will be a while before I can get to a z80. *edit* I've written a few things for the ZX81 in my time, if you'd like the source for a game (16k requi...
by sirmorris
Wed Aug 01, 2018 9:18 am
Forum: software: new games
Topic: Atomic AGD
Replies: 67
Views: 4126

Re: Atomic AGD

Brilliant work (as always ;) ) Kees!
by sirmorris
Sun Jul 15, 2018 9:25 am
Forum: acorn atom
Topic: new to atom: ram rom mmc joystick power
Replies: 23
Views: 601

Re: new to atom: ram rom mmc joystick

I have to admit that I didn't consider mounting on top like the econet board - I always just imagined popping the main interface board underneath the atom motherboard with the slot card hanging outside. I didn't think there was room on top as it's pretty cosy there under the lid. I was wary of short...
by sirmorris
Fri Jun 22, 2018 6:15 pm
Forum: upcoming and recent events & exhibitions
Topic: RCM 10th Anniversary party tomorrow
Replies: 4
Views: 208

RCM 10th Anniversary party tomorrow

Anyone from here going?

I'll be there - I'd love to put faces to handles, as it were.
by sirmorris
Wed Jun 13, 2018 8:09 am
Forum: acorn atom
Topic: Atom 2k18 ?
Replies: 63
Views: 1896

Re: Atom 2k18 ?

I buy most of my xilinx cplds from china via aliexpress. Some have looked odd, with slightly too-large lettering or some other visual artifact that aroused suspicion. They have all been fine though. They all programmed first time, retained their programming, and there have been no weird occurrences ...
by sirmorris
Sun Jun 10, 2018 1:24 pm
Forum: general
Topic: How far gone must a BBC be to be unfixable?
Replies: 23
Views: 988

Re: How far gone must a BBC be to be unfixable?

Quite far gone I'd say, like this Atari 800 xl.
by sirmorris
Wed May 30, 2018 4:44 pm
Forum: general
Topic: Master spray job
Replies: 17
Views: 747

Re: Master spray job

I've never used bone, and I'm always happy with the finish as-is so I can't be any help there I'm afraid. Sorry :(
by sirmorris
Wed May 30, 2018 9:42 am
Forum: general
Topic: Master spray job
Replies: 17
Views: 747

Re: Master spray job

I use vinyl dye to colour plastics. It apparently bonds with the plastic rather than covering it, so it doesn't chip or peel. It also doesn't affect the texture of the surface you're painting as much as a regular paint. The colour range is slightly limited though, and it's more expensive. Still wort...
by sirmorris
Fri May 11, 2018 8:22 pm
Forum: for sale / freebies
Topic: AtomMMC 2.0
Replies: 101
Views: 14107

Re: AtomMMC 2.0

I have boards available. They are built on demand and are usually customised according to the demands of the Atom that they are destined to fit. Feel free to email me at charlie_robson@hotmail.com.

C
by sirmorris
Wed Apr 18, 2018 11:15 am
Forum: for sale / freebies
Topic: Beeb SD card interfaces for sale
Replies: 45
Views: 6871

Re: Beeb SD card interfaces for sale

See first post regarding email address, thanks.
by sirmorris
Mon Jan 22, 2018 10:42 pm
Forum: acorn atom
Topic: My New Acorn Atom :)
Replies: 63
Views: 3566

Re: My New Acorn Atom :)

// start the clocks CLOCKINIT(); // ensure all ADC channels, comparators are off ADCON1 = 0b00001111; CMCON = 0x07; TRISA = 0b11011111; // enable pullups on port B INTCON2bits.RBPU=0; // Make Port B an input. TRISB = 0xFF; // lights out REDLEDOFF(); GREENLEDOFF(); LEDPINSOUT(); // read config byte ...
by sirmorris
Mon Jan 22, 2018 12:48 pm
Forum: acorn atom
Topic: My New Acorn Atom :)
Replies: 63
Views: 3566

Re: My New Acorn Atom :)

The green LED indicates an SD card access. If there's no card in the interface it won't initialise, so no irq. IIRC.
by sirmorris
Sun Jan 21, 2018 10:09 pm
Forum: for sale / freebies
Topic: AtomMMC 2.0
Replies: 101
Views: 14107

Re: AtomMMC 2.0

jdavis6809 wrote:Any change of a copy of the source so I can try with the oric / atmos
Sounds like a fun project. Is this for personal enlightenment and education?
by sirmorris
Sun Jan 21, 2018 9:50 pm
Forum: acorn atom
Topic: My New Acorn Atom :)
Replies: 63
Views: 3566

Re: My New Acorn Atom :)

one thing i noticed is that when the ATOMMC2 is unplugged, the ACORN ATOM + ATOMMC2 never comes up. i will try pulsing the irq line and see if the heading changes to the ATOMMC2 ... :) The interface generates an IRQ at power-on. No interface, no IRQ. No AtoMMC. As you might expect. When the OS ROM ...
by sirmorris
Sun Jan 21, 2018 9:37 pm
Forum: acorn atom
Topic: My New Acorn Atom :)
Replies: 63
Views: 3566

Re: My New Acorn Atom :)

This is as designed. An error in the PCB means that I need to re-route a pin. It is perfectly normal and nothing to worry about. The chip in question here is an address decoder and it has nothing to do with SD card initialisation, that is handled by the PIC processor. MMC and SD cards are tricky bea...
by sirmorris
Mon Dec 18, 2017 8:16 am
Forum: for sale / freebies
Topic: Beeb SD card interfaces for sale
Replies: 45
Views: 6871

Re: Beeb SD card interfaces for sale

The cable is now integral to the board. It's s tiny bit trickier to put together but it makes more sense.
by sirmorris
Thu Nov 30, 2017 9:02 am
Forum: off-topic
Topic: Which soldering iron?
Replies: 66
Views: 3150

Re: Which soldering iron?

Flux. Problems at home? Flux. Car won't start? Flux. Toast burned? Flux. Donald Trump? Flux. I could go on.
by sirmorris
Thu Nov 30, 2017 8:02 am
Forum: off-topic
Topic: Which soldering iron?
Replies: 66
Views: 3150

Re: Which soldering iron?

Too much solder perhaps? You need only the tiiiiiiiinyiest touch for a tqfp. A bit more for a sodip. And flux. Lots of it. The more toxic the better :lol: Moar colons. I don't tack any more, i just flux up, hold the chip in the right place, touch a tiny bit of solder on the tip. With a wet the tip t...
by sirmorris
Wed Nov 29, 2017 12:47 pm
Forum: off-topic
Topic: Which soldering iron?
Replies: 66
Views: 3150

Re: Which soldering iron?

"Mr.Yokoo: Soldering irons will not disappear as long as there are people like you interested in electronic handicrafts.
Hikaru : Yes, indeed. We cannot install a reflow machine in our home.
Mr.Yokoo: That's right. Ha-ha-ha-ha (Laughing)"

=D>
by sirmorris
Tue Nov 28, 2017 2:11 pm
Forum: other vintage computer hardware, software and games
Topic: Lynx Computer
Replies: 11
Views: 1208

Re: Lynx Computer

All I remember about it is that you can have floating point line numbers in basic..

10.1 GO TO 22.3
by sirmorris
Tue Nov 28, 2017 6:47 am
Forum: acorn atom
Topic: Need an AtoMMC board
Replies: 13
Views: 977

Re: Need an AtoMMC board

Yes, still available. Pre-built only though. Disk image support is possible and also the ability to use individual files on the card. There is an (old but still relevant) manual online here. I should really update it :oops:
by sirmorris
Mon Nov 27, 2017 10:11 pm
Forum: acorn atom
Topic: Need an AtoMMC board
Replies: 13
Views: 977

Re: Need an AtoMMC board

waltermixxx wrote:are there two versions of the ATOMMC?
No.

The first prototypes attached to PL7, and were bit-banged using the VIA. There have been no boards made like this for many years. All AtoMMCs are pic-powered.

C
by sirmorris
Thu Nov 23, 2017 3:12 pm
Forum: off-topic
Topic: Which soldering iron?
Replies: 66
Views: 3150

Re: Which soldering iron?

Haha actually it's disgusting stuff but I have a good fan ;) Colophony == Rosin.
by sirmorris
Thu Nov 23, 2017 2:55 pm
Forum: off-topic
Topic: Which soldering iron?
Replies: 66
Views: 3150

Re: Which soldering iron?

Prime wrote:
sirmorris wrote:I now use a Weller liquid flux
You have a link for that Charlie?
Indeed I do.
by sirmorris
Thu Nov 23, 2017 9:17 am
Forum: off-topic
Topic: Which soldering iron?
Replies: 66
Views: 3150

Re: Which soldering iron?

vanpeebles wrote:Erk, I just ordered a flux pen too. A Kester 951?
/me clears throat

I'm sure it'll be fine, they're just not for me and the kind of work I do.
by sirmorris
Thu Nov 23, 2017 9:14 am
Forum: off-topic
Topic: Which soldering iron?
Replies: 66
Views: 3150

Re: Which soldering iron?

A couple of you have now mentioned drag soldering, and it's something I've previously watched a video tutorial for. I'm wondering how easy it is, really, for someone who's practiced at soldering and neither ridiculously dextrous nor a klutz? I'm guessing I should pick up a few cheap components to t...