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by sirmorris
Sun Sep 03, 2017 6:22 am
Forum: hardware
Topic: Master - SD-Card Interface Problem
Replies: 16
Views: 390

Re: Master - SD-Card Interface Problem

I always enjoy a happy ending 8)
by sirmorris
Fri Sep 01, 2017 5:21 pm
Forum: introduce yourself
Topic: Hello from Nottingham
Replies: 18
Views: 299

Re: Hello from Nottingham

Bloody 'ell Is no retro system safe ;)

Welcome aboard Mr. Rea.
by sirmorris
Tue Aug 29, 2017 6:07 am
Forum: acorn atom
Topic: Atoms ahoy on HACKADAY!
Replies: 9
Views: 240

Atoms ahoy on HACKADAY!

It's always a pleasure to see a pre-reset Atom garbage screen on't t'interwebs over breakfast. Well done Hoglet!

P.S. Where do the black ices come from?
by sirmorris
Mon Aug 28, 2017 8:15 am
Forum: acorn atom
Topic: Acorn Atom DC Connector
Replies: 12
Views: 310

Re: Acorn Atom DC Connector

You need a longer tip, the maplin plug is too short for a solid connection :(
by sirmorris
Sun Aug 27, 2017 1:15 pm
Forum: acorn atom
Topic: Programming 2532s
Replies: 13
Views: 622

Re: Programming 2532s

Interesting to know. I may well give that a try, thanks!
by sirmorris
Sun Aug 13, 2017 9:50 pm
Forum: off-topic
Topic: LOLPRICE
Replies: 2630
Views: 166272

Re: LOLPRICE

by sirmorris
Wed Aug 09, 2017 9:09 pm
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

Thanks Dave! I'm really appreciative of the work you and many others put in. I am totally a follower-along in a lot of things, like this for example, and having you forging the way is a great encouragement. I could never start something like this by myself :-({|= but having a worked example to learn...
by sirmorris
Wed Aug 09, 2017 4:34 pm
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

And did you remove the pull-ups from the pins which are for power? Or leave them as-was? I'd be tempted to remove them.
by sirmorris
Wed Aug 09, 2017 2:21 pm
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

Woohoo! I haven't had a minute to try mine :( I'm still a little confused about where the power jumpers need to go. The shifters will have their high side powered by the device under test as I understand it. The ice will be powered by usb. What does this mean for jumpers on the adapter board? Mentio...
by sirmorris
Tue Aug 01, 2017 2:33 pm
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

Yeah, I imagined as much. Though I'm using 10k if that makes a difference.
by sirmorris
Tue Aug 01, 2017 1:40 pm
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

My Z80 adventure will start with my non-functioning Minstrel - a ZX80 based design.
by sirmorris
Tue Aug 01, 2017 12:26 pm
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

My level shifter is 99% complete - I just need to add the power jumpers for Z80. I have another on its way from Jason which I will configure for 6502. I await information regarding the above..!
by sirmorris
Sun Jul 30, 2017 7:50 am
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

We're cookin! Great news all round.
by sirmorris
Sat Jul 29, 2017 8:15 pm
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

It's amazing how so much stuff is just right there in front of your eyes - the silkscreen pin numbers :oops:
by sirmorris
Sat Jul 29, 2017 8:11 pm
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

Aaaaaand relax..

Serial port COM13 opened
ICE-T80 In-Circuit Emulator version 0.73
Compiled at 19:17:30 on Jul 29 2017
4 watches/breakpoints implemented
Tracing every 1 instructions while single stepping
CPU free running...
by sirmorris
Sat Jul 29, 2017 4:52 pm
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

Ha! Looking at the documentation I see that my board looks different to that pictured :shock:

IMG_3941.jpg


FFS
by sirmorris
Sat Jul 29, 2017 4:39 pm
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

hoglet wrote:Looking at the FT230X pinout, the RxD input is pin 2


I think you're looking at the QFP pinout rather than the TSOP.
by sirmorris
Sat Jul 29, 2017 4:38 pm
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

Ignore the goop - I haven't cleaned it after reflowing the chips. Ignore the blob on pin 20 or so that was flux. Ignore the mess on pin 4 that was where I had a wire soldered.

IMG_3931.png
by sirmorris
Sat Jul 29, 2017 4:08 pm
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

My board has an FT230X on it, I think the schematics may be loose at best.

fpga 51 tx <-> ftdi 4 rx

fpga 55 rx <-> ftdi 1 tx

:shock:
by sirmorris
Sat Jul 29, 2017 3:55 pm
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

Pin 46 has the serial data. Pin 4 (RX) of ftdi does not. I've reflowed the pins of both but no change.
by sirmorris
Sat Jul 29, 2017 3:40 pm
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

Nothing on ftdi pin 5.
by sirmorris
Sat Jul 29, 2017 3:35 pm
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

Screen Shot 2017-07-29 at 16.33.34.png So the serial data is there, detected bit rate is 59405, inverted. Nothing from the ftdi though, I'm using a mac so I don't know if the drivers have nuked the chip but the listing says genuine ftdi. I'll buy a couple of replacements and change the on-board one...
by sirmorris
Sat Jul 29, 2017 3:21 pm
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

OK new code flashed - no TX activity but the LEDs do flash at different rates. Faster one scoped at 2.98hz, slower at .96hz as you specified. Spot on. You're expending an incredible amount of time and patience on this Dave, thank you. Perhaps I should just send you the board :D Edit: oops didn't not...
by sirmorris
Sat Jul 29, 2017 3:06 pm
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

I thought there must be some collateral along with the board and sure enough in the eBay listing there's a link to docs and some test code - did you see that? Perhaps there are clues. I asked Jason for his bitfile and all things being equal that should work right? I'll give your latest a whirl.
by sirmorris
Sat Jul 29, 2017 11:50 am
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

\:D/ \:D/ \:D/ and then there were two :D
by sirmorris
Sat Jul 29, 2017 11:48 am
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

That works!

1,2, 4,5 on.
Press 1, 1 goes out,
Press 2, 2,4,5 go out.
by sirmorris
Sat Jul 29, 2017 7:25 am
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

There was indeed a test program, it faded the LEDs in a pattern. I think the board is essentially OK. I'll try and scope the clock lines later.
by sirmorris
Sat Jul 29, 2017 6:41 am
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

OK, for the record - I made the TX pin change and rebuilt, reprogrammed and all I see is the pin making a high->low transition and staying there after a reset. Not a peep from the buttons, no activity whatsoever. PM sent.
by sirmorris
Thu Jul 27, 2017 9:31 pm
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 535
Views: 21981

Re: ICE T65/Z80/6809

I will happily do this, alas my time for fun
has run
out and I will be afk
for at least a day.
Thanks for all the work you've put in today chaps - I really appreciate it.
I'll update you soon as.

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