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hoglet wrote: ↑

Sat May 04, 2019 8:07 pm

I'm also working on a BOM for each board, which are mostly complete:
https://github.com/hoglet67/RGBtoHDMI/w ... tom-Board)

I am ordering parts but I don't have a Farnell account so I'm looking at my usual parts suppliers.

Will a SN74LVC1G66DBVR be OK instead of SN74LVC1G66DBVT?

Neil.

Got it working with an Amstrad GT65 monitor..

Yeah it works but it’s not the best.


Neil.

roland wrote: ↑

Thu May 02, 2019 4:29 pm

I will see if I can arrange a scope tomorrow at the monthly Atom User Group meeting.

There’s a monthly meeting?

Neil.

Can you guys suggest a good all-round JTAG programmer for the Xilinx 9572XL used here that I can also use with other popular Xilinx chips?

TIA

Neil

hoglet wrote: ↑

Thu May 02, 2019 10:17 am

and postage to Netherlands is only slightly more than in the UK

OK then, so I'll pay you and you send it direct to me. Saves another postage cost from Roland to me then.

And we'll sort out the 8k Noise Killer when its ready.

PM on its way.

Neil.

Excellent! I've already ordered the box to put it in.

Now, I am one of the Dutch group (even though I'm British) who @Roland is organising shipment for.
Do we pay you or him?
Also, are we waiting for the noise killer board so they are shipped together?

Neil.

Wow!

I have always known them as calipers. I have a plastic set that came free with an industry magazine!
Some people I used to work with, who will remain nameless, called them verniers, which is wrong.
The calipers have a vernier scale.
So I guess it’s calipers or vernier calipers.

Neil.

hoglet wrote: ↑

Fri Apr 12, 2019 6:59 pm

I was going to make up some 4/5-chip Video RAM/Noise Killer boards, using the following:
- 1x generic 8Kx8 SRAM
- 1x 74LS123
- 1x 74LS245
- 1x 74LS573
- 1x 74LS00 (or maybe just go with 2 diodes like the original)

I’d like one of these too.

Neil.

roland wrote: ↑

Fri Apr 12, 2019 8:09 pm

I am willing to order a few boards for people in the Netherlands if that saves on shipping costs. I also want a board for my Yarrblue Atom.

I’m up for that if there’s enough interest.

Neil.

One step further...

Wow - I need one of these.

I cannot answer to your monitor question but I want to make a remark about this setup: it really looks like an advertisement of the Atom. There are completely no wires visible. What a clean setup 8) Haha! Really?! My OCD makes me hide wires. I have a temporary power connector and video lead until I...

Yes, it works. D452CDC9-9668-40F7-9496-4A5B732DDABD.jpeg However, that’s as far as I can adjust the vertical size of the picture and the monitor has started a quiet ticking noise. The electrolytic caps look OK (no bulges or obvious leakage), any monitor experts here? Shall I change the big one, it p...

Thanks Kees, I had lunch, played with the Javascript emulator then went back to Atomulator and it worked! I must have mistyped something even though I checked and double checked for errors. Capture.PNG I will try it on my real Atom tonight after I've been to the pub. The first time I tried this list...

I see there are a few HTML reproductions of the Atomic Theory and Practice on the internet, some of them have errors in the Three-Dimensional Plotting listing in section 11.5.2 but I believe the listing below is the same as the original manual. 1 REM Three-Dimensional Plotting 50 L=30;M=40;N=8 110 Z...

The Yarrb board has it own way to enable the buffer. Maybe you want to wait for it. The boards should arrive quite soon. Yes, I think I will wait. I will build the Tube interface and install AtoMMC in the meantime. I am still unsure of which colour board to go for but that's not a priority right no...

Ahh yes, all the info is there, and my guesses were right.

Many thanks,

Neil.

I've had a quick scan of this thread to look for the capacitor values for the Atom Tube Interface, but not seen any reference to them. C1 is obviously a decoupling cap, probably 100nF but what about C4? C2 is electrolytic: 10µF 16v maybe? What happened to C3? In the photos I've seen, R1 is a wire li...

Thanks for the replies.

Male double header strip for PL7 I think.

I will leave PL4 until I decide on a colour card.
Any recommendations? Preferably with screen noise removal.

Is there a preferred connector type for PL7? Something that will suit most applications. - Just normal pins (male)? - an IDC tray connector that ensures polarity (male)? - a female version of PL6 as seen on one of Roland's boards? I have a Tube interface to assemble so PL7 will dictate what connecto...

...and apologies to everyone I have been firing questions at for the last couple of weeks.

Finally got an Atom thanks to @roland and @Multiwizard. Let the good times roll.



Neil

Yes I’m interested, as per our email exchange.

Neil.

Put me down as a definite.
I might only be there for an hour or two but I will attend.

Neil.

Ah okay you mean you built the EUP (Electron User Port) board so you do have one. That was the missing piece of information. You called it UPURS instead of EUP, hence my confusion or you would have been connecting upurs cable to air. Ahh yes, sorry, I got the EUP last year for the UPURS function, s...

I’ve just finished building a UPURS, now I just need to fix my PC so I can make the serial connection.
Neil

Sooooo....., if you are able to lose the AP5 and/or the SCSII then that would be good because it’s really looking more like a conflict of some kind :-k . I’ve been thinking about trying UPURS instead of AP5 to prove the smallymouse works but I will have to make a real disk too. I will try it tomorr...

The Elk-modified AMX rom that I prepared for Stuart and that he posted earlier in this thread, (' AMX ' on side 2 of the posted dsd image), has a Checksum-32 of $2CF656 . If you get the V4 EEPROM utilities from here , you can use the EEP16 tool to calculate and display the checksum of any installed...