Re: [Ql-Users] Peripheral of the day
Petri Pellinen wrote: just to lighten the mood here with all the talk about doing the taxes and so forth... I thought to amuse you with something totally ridiculous. Here's a pic of of a prototype of a wonderful new peripheral for the QL: http://www.flickr.com/photos/petrip/5118906714/ And yes, it actually does something. This bad boy can display a byte decoded as BCD on its glorious two digit LED display: http://www.flickr.com/photos/petrip/5118293873/ Showing the result of poke 99072,66 :-D Nice! Learning electronics with the QL is loads of fun. There was a *lot* to learn for a software guy just to be able to do this one simple thing in hardware. Now that the hard part of interfacing with the QL is halfway there (no reads yet, just writes...) rest of the way to a fully working ethernet adapter should be easy ;-) Really looking forward to replacing pretty much all of the 74xx logic circuitry with a single Xilinx CPLD and starting to work towards hooking this baby to an Arduino microcontroller. Next week's agenda is building a JTAG adapter for the Xilinx chip so that I can program it. Whoops, need to learn Verilog first. Well, that's part of the fun :) If I had the time I would like to do such self-study experiments too. Keep on going! Cheers'Urs ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] Peripheral of the day
Norman Dunbar wrote, on 27/Oct/10 09:57 | Oct27: Norman/ Here's a pic of of a prototype of a wonderful new peripheral for the QL: http://www.flickr.com/photos/petrip/5118906714/ That's a serious breadboard you have there! ... and starting to work towards hooking this baby to an Arduino microcontroller. I've just started learning electronics again after about 30-40 years of ignorance! I've bought an Arduino. What a brilliant bit of kit! and only £18 plus vat if you buy a hundred (8-)# http://uk.farnell.com/multicomp/mc-nove/board-atmega328-arduino-duemilanove/dp/1813412 You now need to design a USB interface so you can use it with your QL. Tony -- QBBS (QL fido BBS 2:257/67) +44(0)1442-828255 t...@firshman.co.uk http://firshman.co.uk Voice: +44(0)1442-828254 Fax: +44(0)1442-828255 Skype: tonyfirshman TF Services, 29 Longfield Road, TRING, Herts, HP23 4DG ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] Peripheral of the day
On Wed, Oct 27, 2010 at 3:14 PM, Tony Firshman t...@firshman.co.uk wrote: Norman Dunbar wrote, on 27/Oct/10 13:03 | Oct27: On 27/10/10 10:59, Tony Firshman wrote: http://uk.farnell.com/multicomp/mc-nove/board-atmega328-arduino-duemilanove/dp/1813412 Not a bad price! I got mine and a starter kit for about £50 all in. I always wanted a breadboard when I was younger and playing with electronics, couldn't ever afford one back then. The Arduino stuff is amazing, I really can't wait to start playing with those. I share Norman's history with breadboarding: always wanted to do it but first couldn't afford it and then didn't have the time. superHermes looked very like Petri's for a long time. Considering how critical and fast the main data link to the QL was, it was quite amazing it worked at all. It's actually very comforting to hear that comment about superHermes! So I'm not the only person fooling around with a jumble of jumper wires before committing to PCB:s. I also was concerned about the relatively high clock speed on the QL expansion bus when connected to the breadboard but quite a few people on various discussion forums seemed to agree that a breadboard should be able to handle approximately 10 MHz before the capacitive effects of the rails on the breadboard start to kick in. /Petri ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] Peripheral of the day
Petri Pellinen wrote, on 26/Oct/10 22:30 | Oct26: Hello everyone, just to lighten the mood here with all the talk about doing the taxes and so forth... I thought to amuse you with something totally ridiculous. Here's a pic of of a prototype of a wonderful new peripheral for the QL: http://www.flickr.com/photos/petrip/5118906714/ And yes, it actually does something. This bad boy can display a byte decoded as BCD on its glorious two digit LED display: http://www.flickr.com/photos/petrip/5118293873/ Showing the result of poke 99072,66 :-D Learning electronics with the QL is loads of fun. There was a *lot* to learn for a software guy just to be able to do this one simple thing in hardware. Now that the hard part of interfacing with the QL is halfway there (no reads yet, just writes...) rest of the way to a fully working ethernet adapter should be easy ;-) Really looking forward to replacing pretty much all of the 74xx logic circuitry with a single Xilinx CPLD and starting to work towards hooking this baby to an Arduino microcontroller. Next week's agenda is building a JTAG adapter for the Xilinx chip so that I can program it. Whoops, need to learn Verilog first. Well, that's part of the fun :) I am *sure* you know the significance of '42' - the answer to the ultimate question of life, the universe and everything. It is the result of a 2 million year program (the world) to work out the result of 6 x 9. ... and it got the wrong answer. Douglas Adams was approached by a student who said he had found out the logic behind it. 42 in base 13 *is* 54 in decimal. What a coincidence said Douglas Adams Tony -- QBBS (QL fido BBS 2:257/67) +44(0)1442-828255 t...@firshman.co.uk http://firshman.co.uk Voice: +44(0)1442-828254 Fax: +44(0)1442-828255 Skype: tonyfirshman TF Services, 29 Longfield Road, TRING, Herts, HP23 4DG ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] Peripheral of the day
On Wed, Oct 27, 2010 at 12:44 AM, Tony Firshman t...@firshman.co.uk wrote: I am *sure* you know the significance of '42' - the answer to the ultimate question of life, the universe and everything. Well I had to think of a number for the demo, didn't I ;) Douglas Adams was approached by a student who said he had found out the logic behind it. 42 in base 13 *is* 54 in decimal. What a coincidence said Douglas Adams Hah, hadn't heard that one before! Good one, Tony. ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
