Search found 656 matches

by martyn_hill
Fri Jan 30, 2015 10:37 pm
Forum: Hardware
Topic: Serial ports: How are the two Rx lines differentiated?
Replies: 10
Views: 3489

Re: Serial ports: How are the two Rx lines differentiated?

Hi Petri and thanks for that I was actually referring to that cleaned-up cct diagram as well (so much better than what we had to use before!). After the line-receivers, the two Rx lines (named Rx an TX according to DCE/DTE) are routed to the HAL, which in turn, generates the IPCINT which goes back t...
by martyn_hill
Thu Jan 29, 2015 10:03 pm
Forum: Hardware
Topic: Serial ports: How are the two Rx lines differentiated?
Replies: 10
Views: 3489

Serial ports: How are the two Rx lines differentiated?

Hi everyone I am perplexed... Referring to the QL service manual and circuits diagram, I am lead to believe that BOTH serial port Rx lines are tied together (via the HAL on issue 6 boards upwards) and applied to both the IPC (std 8049 or Hermes) INT and P20 pins (pins 6 and 21, resp.). Given that on...
by martyn_hill
Sun Jan 25, 2015 8:16 pm
Forum: Software & Programming
Topic: Lightning - is ROM version same as on-disk?
Replies: 4
Views: 1756

Re: Lightning - is ROM version same as on-disk?

Hi Rich! That would be very helpful... I'm in the process of building a toolkit of extensions to put on EPROM (or, if I finish it soon, an NV SRAM) so that I can ultimately do away with the mdvs altogether on my BBQL... It's mostly the TEXT extension that I have been using so far, anyway. We can dis...
by martyn_hill
Sun Jan 25, 2015 8:01 pm
Forum: Software & Programming
Topic: Lightning - is ROM version same as on-disk?
Replies: 4
Views: 1756

Re: Lightning - is ROM version same as on-disk?

Thank you, Tobias! Yes, the ROM header would definitely need to be added, wouldn't it. As the disk-copy LNG extensions are simply RESPRd anyhow, the question remains whether it tries to write to its own code area once running - I guess I can just test it by burning an EPROM and seeing if it still be...
by martyn_hill
Sun Jan 25, 2015 5:28 pm
Forum: Software & Programming
Topic: Lightning - is ROM version same as on-disk?
Replies: 4
Views: 1756

Lightning - is ROM version same as on-disk?

Hi everyone I have a copy of Lightning SE that I purchased and used many moons ago with my original BBQL. Now I would like to burn a ROM image for my 'new' BBQL with the various LNG extensions and was wondering if anyone here knew whether or not the disk-copy that I have been using would also take t...
by martyn_hill
Sun Jan 25, 2015 5:19 pm
Forum: Software & Programming
Topic: Cartridge Doctor...
Replies: 5
Views: 1980

Re: Cartridge Doctor...

Hi Rich

Thanks - all dealt-with now via PM.

M.
by martyn_hill
Sun Jan 25, 2015 11:28 am
Forum: Software & Programming
Topic: Cartridge Doctor...
Replies: 5
Views: 1980

Re: Cartridge Doctor...

Hi Rich and thanks for such a prompt reply. Should I email you directly with the proof of ownership? What would count as proof? Given the headache with mdv reliability, my preference would be an emailed copy - I can move it across from my laptop/QPC to the BBQL it needs to run on - but I don't run Q...
by martyn_hill
Sun Jan 25, 2015 12:48 am
Forum: Software & Programming
Topic: Cartridge Doctor...
Replies: 5
Views: 1980

Cartridge Doctor...

Hi everyone I picked up a 2nd hand copy of Talent's Cartridge Doctor from a French gentleman on eBay - knowing that such an old mdv cartridge was unlikely to work. The packaging was pristine, but the cartridge pad gave up after the first DIR... The cartridge itself is mostly readable, bar 6 sectors ...
by martyn_hill
Sat Jan 17, 2015 10:55 pm
Forum: Hardware
Topic: Another ram upgrade
Replies: 20
Views: 6938

Re: Another ram upgrade

Thanks once again Nasta!

(and apologies to lliont for effectively sabotaging your inspirational initial post!)

I think that clears it up for me! Back to the drawing board.

And lliont - good luck!
by martyn_hill
Sat Jan 17, 2015 12:44 pm
Forum: Software & Programming
Topic: Terminal Program Serial Control
Replies: 8
Views: 2745

Re: Terminal Program Serial Control

Hi everyone Using the Arduino (haven't looked at the Duinomite myself - yet), is in fact the second phase of the Scalextric project I'm still working on :-) At the moment, I'm just using some HERMES ports as inputs (rigged-up to some reed-switches set in to the tracking - fed through a simple 555 ci...