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Tezz

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Tezz last won the day on October 6 2019

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About Tezz

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    River Patroller

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    Manchester, England

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  1. Nice to see more people repairing chronically damaged XL's. @Lee, Where did you order the Futaba ML switches from?
  2. Thanks @_The Doctor__ the photos I used in the post were just to illustrate the tracks to pin 10 of the PCB, they were taken from the previous repair I did a few years ago which I had to hand to draw over. There were some trace repairs on this current PCB however and as mentioned all the points going to pin 10 were showing continuity on the meter so I thought this morning that it must be that the trace repairs were perhaps too weak for the lower current from the keyboard connector so I ran a jumper wire from a pin where all the offending keys connect to that part of the matrix and then another directly to pin 10 and all keys are now working flawlessly. It goes to show not to rely too much on my basic meter when diagnosing. Thanks also to @StickJock for your earlier reply.
  3. Thanks very much for the reply, sorry I forgot to mention in the post that the keyboard was tested in two different 800XL boards so it looks to be an issue with the keyboard itself. I was expecting to to find a lack of continuity somewhere with a damaged trace and run a jumper wire but all seemed to check out along those traces to pin 10. Perhaps one of the other switch pins within that group of five keys is causing the issue?
  4. Hi all, I have an issue with an Alps keyboard with keys 7,6,U,Y,N being non responsive. Looking at the keyboard matrix this indicates an issue to pin 10, however after following the traces to pin ten, all the points appear to have continuity to both the pcb and the end of the cable so I'm unsure where the issue is. I've attached a photo tracing to pin 10 in yellow. (I had to split the image between two parts as I didn't have a complete photo of the PCB to hand with the cable out of the way). Any assistance appreciated
  5. That ten years has passed quickly. I still remember chatting online with Radek like it was yesterday, it's still shocking.
  6. Atarians never die we just get to the next level
  7. Boulder Dash II was one of mine again, that was back in 2009. Whilst I was enjoying creating the loaders for the XBIOS examples in 2013 I did one for BDII also. I wanted to have a raster effect during disk IO, something that I was told was impossible back in the 80's It's a shame that loading sequences and pictures are redundent now with modern high speed solutions. Arkanoid was my conversion of the c64 loading picture done in the early days of G2F which is in the archive, someone added it to the executable many years ago which I wasn't aware of until recently. I did redraw an Arkanoid title based more on the arcade, I should have that backed up somewhere. xbios_bdii.atr
  8. Hi Phil, ah yes that original Blinky's image was probably Jose, actually the Draconus picture was done by me and Jose together but the Blinky's intro I did from scratch to replicate the c64 title as a loader instead. Zybex didn't have a great loading picture so I drew the Zeppelin logo instead A few years ago in one of the competitions Rafal Strzelecki created a neat Zybex picture split with mode 9
  9. @Karolj I've not been able to edit my signature since the forum upgrade! 🤔
  10. Hi Phil, I'm not sure who did that version with the title but back in 2012 (or was it 2013?) I created some examples to help demonstrate XBIOS at the time. These included the Zeppelin games: Zybex, Draconus, Blinky's and Jocky Wilson's Darts Compendium. I added the loading pictures to each one displayed during disk IO. With Blinky's I added the full title screen and animation during loading. I also added some fixes to the games. I got carried away with Jocky Wilson's Darts and replaced the dart playing sequences with full colour versions along with a bunch of fixes. zeppelin_ed.atr
  11. True although technically the channel could be used for samples
  12. With regard to the irq you create a command jump list which is dispatched in sequence in your irq procedure at the precise time set by the timer. I'm using variations of this technique in Barbarian and planned for Bomb Jack arcade... well with any future project where NMI won't cut it really.
  13. Hi, it looks like two people are working on the same thing again I've not been around for a year or so with family commitments. After TIX was discussing the Bomb Jack sprites last year (see link)... I started working on Bomb Jack arcade following my original intention for the conversion. I was working on the concept for the kernel procedure encompassing the sprite multiplex and backgrounds. I dug out my original arcade sprites from all those years ago and reworked or redrew them ready for the new project. I also reworked the backgrounds to improve them and bring them closer to the arcade original as compromises were nessasary for the soft sprites in the joint project back in 2008. I began planning a direct conversion of the arcade AY-3-8910 music which is quite well documented online. It goes without saying however that 2020 wasn't a good year. I'm hoping to get some more free time again this year to continue on with all the projects again.
  14. Best wishes to you Paul, sorry to hear of your current situation. It's good to see that there are still many good people pulling together during tough times and looking out for each other.
  15. This is terribly sad news to hear. A great loss
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